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Contents
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8. 3 5 VDI No31O6 VDI No 3106 VDI No 31O6 SSH
9. 24 HO18M SIRE ED d A
10. 11 S12 B BSDUDINEW AOA D oD BIST MES bd d lt DS d XO 75 ORT D
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14. EDIE 140 HO18M15 120 HO18M12 _ 100 26 HO18M10 R a 60 neay T T N 40 HO18M8 O G OF 20 Mea ia J7 J7 J1 O 1000 2000 3000 o r min s SEN 6 3 REM LI EE Sa J jan T vit yo Ja 6 4 20 90 680 6150 61385 205 618 102 689 6172 d158 242 b24 6146 6104 46226 184 306 35 177 129 272 224 367 HO18M10 15 JH15 JH1 16 22 6 5
15. 23 Table of contents Introduction Safety Information Safety Precautions 1 Construction and Operation 4 1 1 Model COGING 2 ntscer cs ectcrlis tesla tine tes cis tess 4 1 2 Construction and Operation i 4 2 Installation sensen EE 4 21A Unpackihg ex sos cect eek con eo da 5 2 2 Accessories eee 5 2 3 Preparations for Installation ei 5 2 4 Stroke COMMON as css uur 5 2 5 Installation Procedure 6 2 5 1 Before Installation 6 2 5 2 Removing Draw Screw eit 6 2 5 3 Thread Cutting on Draw Screw 6 2 5 4 Installing Draw Screw eet 6 2 5 5 Installing Chuck Adapter eee 7 2 5 6 Installing Chuck 7 2 5 7 Inspecton aR SS RS 8 2 0 0 BalanGe SNE 9 3 Precautions for Use ii 9 3 1 Selecting Top Jaws ii 9 3 2 Installing TOP Jaws 10 3 3 Forming Top Jaws ss none taetOeteidtecte 11 3 4 Installing Stopper i 13 3 5 Setting Working Conditions 13 3 5 1 Permissi
16. 2 5 4 3 3 MG Ms M10 M12 N m 13 8 33 3 66 7 116 5 ad ABA b As 255 _
17. ANSI B11 6 1984 section 4 3 2 CSC 3 6 2 A TANS B11 6 1984 1 4 6 mm
18. D 20 6 6 1 HO18M nm oR yr C1TA 1 4 GD 2 3 6 2
19. 2 5 3 J 3 2 4 2 8 to 12 15 ae M60 M82 M125 Cc A zs 2 5 3
20. 8 25 8 JIS BO9O5 1992 4mm s F 7 JIS BO9O5 1 oe eee ISO1940 1 1986 ISO8821 1989 T yy29 9 1 42 5 3 4 6 3 1
21. CORRS 4t O 4 Iig a A Lis
22. 116 559 D O OQ were 2 2 5 7 m L
23. ll gt O SN 20 ON QI WWWWW O O OES
24. D X ae ies Ocha a 3 2
25. 3 5 2 FEA 6 BOOKCITSC 3 6
26. ANSI B1 1 6 ANS o 14 3 6 1 ax
27. 2 1 1 mm MAY a 2 5 2 5 1 ax SO 2 5 2 IUT
28. 10 Sx ES
29. C C 0 040 0 050 mm 0 005 A 0 010 Ni gt Cc 2 5 6 ul e O O O Re 4 Re 4 2 4 8 to 12 1 Re 1 mm so
30. 7 l 0 gt DE tgs Thi Ps KA 7 el a s SAU YF 7 Az zs Re Re 4
31. A iig OF gt ig 4 2 1OOO Z
32. So TANSI B11 6 1984
33. COREA 1 1 1 HO18M HO18M A a JIS 8 1 2 HO18M
34. GOOD NO GOOD L 1 4 Chit lo 1 4 1 lA y GPR 1 4 ee Rie TL SB 1 1 4 GOOD NO GOOD 12 B d ZAZA et a jp i g z sie Ss 3 3L As SS
35. careful when doing so not to lose the steel ball oes FR and spring on the back of the draw screw Steel Ball Cap Screw Sprin 2 5 3 Thread Cutting on Draw Screw The female thread in the draw screw J must be cut to match the screw diameter of the connecting pipe The maximum thread cutting diameters are indicated in Table 2 for various chuck types and sizes Ensure that the runout does not exceed the tolerance indicated in Fig 4 Fig 4 Table 2 mm A Chucksize 8 10 12 15 4A WARNING The connecting pipe must keep enough wall thickness to ensure the strength even after threading Caution stated in the paragraph 2 5 3 for processing the screw must be strictly kept for securing ample strength of a draw screw If neglecting confirmation alternatively instantaneous loss of gripping force to the chuck will cause by breakage of the connecting pipe or draw screw At a result this may cause the work piece to be released during operation and may severe personal injury or death to the awe enh HL 2 5 4 Installing Draw Screw Fig 5 After cutting the thread in the draw screw the installation is Master Jaw performed in the opposite order of the removal Install all of Retainer the retainer bolts with the same fastening torque See Table 3 ly
36. an 2 CORBRASHBASBDICISS Y ATX E F O
37. 9 9 gs io iz ts aC mm 18 15 10 As 1 3 1 3 2 D 3 3 J11
38. 10 6 8 11 12 15 tA moO LYF 4 2 2 1 8 20kg JL
39. QUICK CHANGE HOLLOW POWER CHUCK HO18M INSTRUCTION MANUAL A IMPORTANT Be sure to read and understand this instruction manual thoroughly before Operating is product When DENKA ownership of this product is transferred submit this manual to the new owner BS the ser AL SAAT BTL HOWA MACHINERY LTD B 1 Side ey ta 6h Fh I ee ic BES ed Fea Rea Wy ee oe 4 11 4 12 AE oe 4 2 Pe ar e I NG TO Sa EN at a 4 2 1 RIAN e e e e e e 5 22 5 23 5 24 o A ET ET TERI GT 5 2 5 Bee ae 6 2 5 1 6 252 6 253 fos sxe sex 6 254 7 6 255
40. 7 RO a a e a T R mm 0 020 0 030 0 040 TIR mm 0 020 0 030 0 040 6 RGO N m D
41. 2 2 C 6 2 3 A COR
42. d d H7 1 6a d n6 1 6a 12 bd
43. 15 3 6 3 ax So A OF
44. Close the master Jaws to the limit by operating the hydraulic or pneumatic circuit Then form D part where the ring is held Diameter D is given by following formula d diameter of ring d gt D d max jaw stroke x 0 75 Operate the hydraulic or pneumatic circuit and grip the formed plug at D part pushing it to the chuck face preventing inclination of the plug The operator must take care not to pinch his her hand when gripping the forming plug If caught his her hand will be injured Operate the hydraulic or pneumatic circuit and grip the formed ring at D part Be careful not to incline the ring to the chuck face The operator must take care not to pinch his her hand when gripping the forming ring If caught his her hand will be injured Form d part where the work piece is held keeping the plug as above mentioned Diameter d should be formed in the same diameter as the gripping diameter of the work piece approx allowance H7 and its surface finish should be better than 1 6a A finished surface with a higher precision will be obtained if the formed plug is re gripped before the final finish forming Form d part where the work piece is held keeping the ring a
45. F DHS
46. oD d d gt D2 d XO 75 AD D
47. ax e 55
48. 7 256 ocorren 7 257 B Ns 2h ee AOR OE SP GES eS 8 258 oe tte eee ee ee ee 9 3 9 34 et ee ee 9 32 10 33 11 B34 13 35 oo ooer eenen 13 3 5 1 14 B52 14 36 14 3 6 1 15 36 2 15 363 16 364 16 A 17 AA Sie I NE a ae he ee eee Ge 17 42 17 421 eee 18 4 3 18 AA 19 5 ee ee ee ee 20 6 1 6 1 FA 62 WBA ceso oee eee 22 63 BEEM e e e ee ee ee ee ee ee ee 22 64 BYERB e ee ee ee ee ee ee ee ee 22 65 ate ee a tee Be ete We 23 RC lone Sen fe 23 1 HO18M
49. 17 4 2 1 4 4 O 27 2 O 14 12 3O 1 1 1 10 OQ 10 1 5 16 2O 4 3 TANSI B11 6 1984 section 7 1 9 19
50. TE
51. Table 3 M12 Draw Screw pE Tightening torque N m Cap Screw Wedge Plunger AA WARNING Fasten the retainer installing bolts with connect tightening torque Too little or too much torque may cause a fracture of the bolt itself or of the retainer causing an instantaneous loss of chuck gripping force This in turn may cause the work piece to be released and may cause severe personal injury or death to the operator or bystanders 2 5 5 Installing Chuck Adapter Install the chuck adapter on the spindle end face ao 9016 Then the chuck installing socket C and datum face should A l be machined in place The clearance of the chuck adapter in relation to the chuck L o installing socket C should be 0 040 0 050 mm in diameter Chuck Adapter 2 5 6 Installing Chuck C Spindle 1 Remove the top jaws holders collar and O ring before installing the chuck 2 The chuck has a screw hole for the eyebolt on the periphery Screw the attached eyebolt into this hole and lift the chuck 3 Advance the connecting pipe to the advance end by activating the hydraulic or pneumatic circuit In this state the distance Re between the front end face of the chuck adapter and that of the connecting pipe will be as shown in Table 4 A CAUTION f the dimension Re is greater than that indicated in Table 4 the
52. 2 3 4 5 7452 8601 SARATA O 1900 1 TEL 052 408 1254 FAX 052 409 3766 6 S 1MPa 10 197kgf cm2 lt 1kN 101 97kgf 1N m 0 1019Tkgf m
53. Retainer Grease nipple Spring Hex socket head bolt Steel ball Hex socket head bolt Master jaw Screw Dust proofer Corner seal Base jaw Set screw Key Hex socket head bolt Top jaw Hex socket head bolt Hard jaw Screw Rack Wrench Pin Handle Spring Bit Cover Screw Cam O ring Click Ball plunger wo Stopper PPR GO GO GO GO GO GO GO RR gt 19 The 12 inch and 15 inch use six 5 Troubleshooting When there are any troubles with the operation of the chuck the following causes are likely Please check these before contacting us for service Trouble Chuck does not operate Insufficient master jaws stroke Work piece slips Poor accuracy Top jaw cannot engage with rack Jaw adjusting wrench cannot be removed Possible cause Damaged parts on chuck Recommended remedy Disassemble and repair Seizure of sliding contact part Disassemble and repair with oilstone or replace Rotating cylinder inoperative Chips heavily accumulated inside Check the piping line If no problem is detected disassemble and clean the cylinder Disassemble and clean Loosened joint between rotating cylinder and connecting pi Insufficient top jaws stroke Remove the rotating cylinder and retighten Adjust so that top jaws come near the center of t
54. 6 Secure the chuck body to the chuck adapter using the chuck installing bolts provided as accessories Install for the periphery and the end face the chuck body do not deviate exceeding the limits indicated in Table 5 Table 5 mm 5 Chucksize 8 10 12 15 Runout the outer periphery T I R 0 020 0 030 0 040 Runout the end face T I R 0 020 0 030 0 040 For the torque to be applied to the chuck installing bolt refer to Table 6 Table 6 Tightening torque N m 4A WARNING Fasten the chuck installing bolts with recommended tightening torque If the torque is largely different from the recommended value lower or higher the bolts may break and the chuck and or work piece may fall out this presents a hazard that may cause severe personal injury or death to the operator or bystanders 7 Turn the draw screw with the special wrench provided and adjust until the center of flat outer surfaces of the master jaws and the periphery of the chuck body are flush when the master jaws are opened TE The draw screw has a click steel ball and spring for anti rotation and therefore stop the draw screw at a point where its revolution becomes heavy and adjust the master jaw position 8 Install the O ring collar holder and the top jaws to complete the chuck installation 9 If you installed the chuck by screwing the eyebolt into the chuck periphery remove the bolt 4A WARNING Be sure remove the eyebolt when the i
55. ANSI B1 1 6 1984 A TANS B1 1 6 1984 ANSI B1 1 6 1984 3 6 4 A SK 16 4 4 1
56. Max pressure to operate chuck Series number HO5CH Max pressure to operate chuck Note 1 The four times of this value is equivalent to GD 2 If the plunger stroke of a chuck is shorter than that of a cylinder the latter must be adjusted to the former The cylinders of model marked are required limiting of stroke 3 When the Max speed of a rotating cylinder is lower than that a chuck observe that of a rotating cylinder Z3 L2 x J1 Adapter L1 ap P imaw a i K on ii a i Li Mo 2 NH oi SAE o E lt M3 y J 5 6 G H E 21 6 2 Gripping Force The following graph shows the gripping force of the rotating chuck equipped with the standard soft jaws ere Dynamic gripping force 140 H018M15 120 HO018M12 100 8 HO018M10 80 2 amp OS 40 HO18M8 q 20 0 1000 2000 3000 6 3 Standard Top Jaws Chuck speed r min J4 J3 J18
57. check to be sure that the pneumatic or hydraulic pressure needed to operate the chuck is being supplied to the rotating cylinder If not supplied or not sufficient the work piece could slip out and fly off as the cutting starts and may cause severe injury or death to the operator and or bystanders ANSI B11 6 1984 prescribes installation of an interlock circuit for preventing chuck rotation or an audible or visible warning system activated when the required pressure is not supplied to the cylinder gripping side Perform a test run at low speed before cutting to verify that the top jaws or the stopper does not interfere with the turret or tools To make sure that there will be no interference of the top jaws or stopper with the turret or tools do a test run cycle at low spindle speed without work gripping Should there in fact be interference the resulting sharp collision may cause the top jaws or the stopper to fly off which may lead to severe injury or death to the operator and or bystanders To comply with ANSI B11 6 1984 section 4 3 2 you need to install a check valve and an accumulator in the connecting area with the chuck so that the hydraulic or pneumatic system does not loose pressure in case of failure Besides check valve and accumulator it is essential to install a shielding cover that separates the chuck and work piece from the operator or bystanders Without such a cover the work piece chips or tool fragments will f
58. jaw As far as the standard soft Fig 10 jaws or standard hardened jaws and attached bolts are used the L screwing depth of bolts are appropriate value In case the jaws are not standard ones choose the suitable bolts referring table 9 l Table 9 EN RE LChucksize 8 10 12 15 Min depth L mm 13 i 10 4A WARNING Use three bolts to secure one top jaw Be sure to chouse the bolts with appropriate length Use three bolts to secure one top jaw If two bolts are used the top jaw and or the bolt may break If the bolts used to secure the top jaws are screwed in too shallow into the base jaw the top jaw could break Or if the bolts protrude from beneath the lower surface of the base jaw the top jaws are not secured no matter how far in the bolts are screwed In either case if the screw depth is improper the jaws and or work piece may fly off from the chuck and in turn may cause severe personal injury or death to the operator or bystanders 3 3 Forming Top Jaws Fig 11 When the top jaws are installed they must be GOOD l aa GOOD machine formed to align flush with the work piece 2 aw Slroke When the work piece is gripped the jaw stroke should be such that there is one fourth of the jaw stroke 5 Ulan remaining as measured from the stroke end Thus if lo La i you are gripping the outs
59. jaw with a compressed air blast What dirt or foreign matter remains can be loosened with cleaning oil brushed vigorously then blown off by compressed air Match Mark ii NOTE When a rack is damaged it is similar to when dirt clings to the rack the base jaw is not seated properly causing poor accuracy When the damage is noticed a whetstone and file should be used to repair it 2 The top jaw installing bolt is particularly important in view of safety and accuracy If the screwed depth of the bolt in the base jaw or tightening torque is insufficient a serious accident could result To prevent such a situation observe the screwed depth and tightening torque by chuck size specified below Use the fastening torque for the bolts as indicated in Table 8 Table 8 Tightening torque N m 42 WARNING Use exact torque for the installing bolts AA WARNING If less torque is used than specified in Table 8 above the bolts may loosen in the top jaws and or the work piece could come off If the torque is greater than that specified the base jaws and or top jaws will deform and defective operation will result leading to breakage and release of the top jaws and or work piece In either case the resulting flying off of work piece and or top jaws may lead to severe personal injury or death to the operator and or bystanders 3 Three bolts are used for one top
60. specification table Increase in the chuck speed lowers the gripping force and the chuck may lose hold of the work piece Securely tighten the bolts with the specified torque Otherwise the bolts may become loose or damaged resulting in coming off or flying out of the parts or the work piece The table below shows the bolt sizes and their tightening torque Tightening torque Tightening torque N m Lubricate the chuck periodically Failure to lubricate the chuck may remarkably shorten the lifetime of the chuck Lubricate the chuck once in eight hours of operation However when using a large amount of water soluble coolant lubricate once in four hours Recommended oil MOLYKOTE EP GREASE supplied from Dow Corning Corporation For all the chuck parts including consumables place an order with gt Howa Machinery Ltd Howa shall not be liable for any accidents caused by use of parts not supplied from Howa Any and all warranties are invalid unless only Howa s genuine parts are used Never use the chuck with a vertical lathe gt If this chuck is used with a vertical lathe cutting tips may heap up around the rack and interfere the jaw change operation HE Use eyebolts when mounting or removing the chuck y Otherwise you may drop the chuck or suffer from lumbar injury due to excessive load NOTE The words of gripping force and clamping force are used as a synonym in this instruction manua
61. 5 J7 i a J11 as Jal The following table shows the dimensions of standard soft jaws Chuck series 6 4 Standard Hardened Jaws The following table shows the dimensions of standard hardened jaws Available range of 20 90 gripping diameter 0 80 6 150 135 6205 018 6102 89 6172 158 6 242 b24 6 146 104 6 226 184 6 306 35 6177 129 6272 224 367 H018M8 JH30 MS ma le J I J JH3 SS Aeg OO oO A A lt JH15 JH20 face line JH16 22 Chuck body 6 5 Accessories The package box contains the accessories besides the chuck itself Parts name Special wrench for adjusting the draw screw O Hex socket head bolt for mounting chuck us SN oa Hex key spanner LIL 20 mh NM Eyebolt Special wrench for adjusting the base jaw O LIMITED WARRANTY Seller warrants its products to be manufactured in accordance with published specifications and free from defects in ma
62. Lubrication Points Recommended Lubricant Time of Lubrication Grease nipples on Once every 8 hours outside of chuck MOLYKOTE EP GREASE but where coolant is constantly body used once every 4 hours The jaw way of Mobil DTE Light Once every day or once every jaw the base jaw change Recommended oil MOLYKOTE EP GREASE supplied from Dow Corning Corporation 4A WARNING Insufficient lubrication will lead to lower gripping force and create abnormal friction and seizure If the cutting is done in such conditions the work piece will come off and may cause severe injury or death to the operator and or bystanders Lubrication with non specified lubricants may also permit extraordinary corrosion and or wear and will lead to a loss of gripping force 4A WARNING The operator and or bystanders may be seriously injured or killed if improper lubricants are used Improper lubricants may reduce gripping force of the chuck and permit work pieces to fly out of the chuck AA WARNING Failure to use an anticorrosive coolant can cause rust build up inside the chuck that increases friction This may reduce gripping force of the chuck and work pieces may fly out of the chuck This causes serious injury or death to the operator and or bystanders as well as damage to the machine 4 2 Disassembly and Cleaning Even with proper lubrication fine chips or scale can enter the chuck to jam the area of the jaw guide or wedge plunger thus preve
63. ble Cylinder Force eens 14 3 5 2 Work Deformation 14 3 6 Precautions for Operation 14 3 6 1 Before Gripping Work piece i 15 3 6 2 When Gripping Work piece 15 3 6 3 During Cutting Operations ee 16 3 6 4 End of Operations 16 4 Maintenance te 17 4 1 Lubrication RR eee eere Ee 17 4 2 Disassembly and Cleaning eit 17 4 2 1 Disassembling Procedure 18 4 3 Setting Safe Rotational Speed i 18 4A RAMS DSt ness esarncncealeo I 19 5 Troubleshooting oe cost cont esl cesicest RE desde 20 6 Specifications i 21 6 1 SPSCHICALIONS 5 tay entered ends scddeabesed died sotd caduteddzanese 21 6 2 Gripping Forcen RE 22 6 3 Standard Top Jaws Eee 22 6 4 Standard Hardened Jaws ti 22 6 0 ACCESSOMES SDE 23 LMITED WARRANTY wcities cece nein 23 Introduction 1 This instruction manual describes the quick change through hole power chuck HO018M standard model 2 Please read this manual carefully and fully understand the procedures for installation operation inspection and maintenance before operating the chuck 3 Ignoring any instructions in this manual may result in a serious accident or machine damage leading to injury to the operator or personnel near the machine 4 Always keep this manual handy and use care not to lose it 5 Please contact us phone and fax numbers are shown below for information regarding
64. ce life of the chuck is caused at Deformation portion of jaws because jaws holda very heavy work piece only specific Try to grip the work piece at around the centerline to avoid eccentric distribution of load to any specific jaws Work piece is deformed due to excessive gripping force Chips present on rack Reduce the gripping force to a reasonable amount to assure proper machining Clean with brush or air gun Base jaw outside of adjustable range Top jaw rack dose not engage fully with rack due to chips present on rack 20 Correct setting to bring match mark on base jaw within range of scale marks on end face of chuck Clean with brush or air gun 6 Specifications 6 1 Specifications Specifications Dimension Series number Series number Specifications 210 58 135 190 300 103 140 133 4 235 M12 M20 15 27 M50 x 1 5 M125 x2 32 40 28 38 13 18 7 18 23 42 82 26 72 Jaw movement Dia Plunger stroke Cylinder stroke Recommended outside chucking diameter for standard soft jaws Max Speed Max input force kN onm a Bi gt Clamping force at Max input force Total jaw force KN 2 Moment of inertia J Note1 kg m Weight with standard soft jaws kg Matching cylinder Series number C1 TA Max pressure to operate chuck Series number HH4C
65. chuck cannot be installed Table 4 Chucksize 8 10 12 J 1355 Re 1 mm Fig 7 O ring Collar E Top Jaw Holder 7 Kj il Hex socket head bolt for munting chuck Hi Connecting Pipe Special Wrench Chuck Adapter Adjust the screw depth of the connecting pipe Re to a proper length If the Re value is smaller than that indicated in Table 4 the screw depth of the connecting pipe is not long enough to fully engage with the draw AA WARNING i ial screw This will mean that the screw will be broken and all of the gripping force will be lost immediately If this accident should occur the work piece may fly off and in turn may cause severe personal injury or death to the operator or bystanders 4 Insert the special wrench equipped from the front side of the chuck and check to see whether the draw screw can be turned 5 Hoist the chuck with the chain block and screw in the draw screw into the connecting pipe until it can be tightened no more A CAUTION Use extra care when operating the hydraulic or pneumatic circuit during the chuck installation If you actuate such circuits accidentally during chuck installation you may be caught between the chuck body and the spindle or between the top jaw and the master jaw resulting in injury
66. d of course but ordinarily long term use under conditions of maximum force is not recommended To maintain long term gripping precision one must keep sufficient work holding force in relation to the cutting force and with adjustment for sufficient but not excessive gripping force the most effective performance will be achieved A WARNING The use of excessive cylinder force will lead to breakage of chuck parts or bolts and sudden loss or gripping force If such a mishap takes place while the chuck is rotating the work piece may fly oft causing severe injury or death to the operator or bystanders 4A WARNING In the case of ID gripping ensure that the cylinder force does not exceed half of the allowable cylinder force If a cylinder force that exceeds half of the allowable value is applied to the chuck the chuck parts or bolts will be broken and the gripping force will be lost instantaneously If such an accident occurs during chuck rotation the top jaws or the work piece will come off causing severe injury or death to the operator or bystanders 3 5 2 Work Deformation When a work piece tends to be easily deformed lowering the gripping force can minimize the deformation However when the rotational speed becomes too high it is less easy to support the work piece due to the effect of the centrifugal force Thus great care must be taken when lowering the gripping force To take better measures against deformation design the jaw c
67. der various circumstances We cannot predict all of these hazards Accordingly the warning messages described in this manual do not cover all the hazardous situations Also there are too many things that are impossible or prohibited in chuck operation to describe completely in this manual We cannot assume any responsibility for any damage or accidents caused through operation inspection or maintenance that is not specified in this manual 1 Safety Precautions The following precautions apply to handling maintenance and operation of the chuck Read and understand them carefully before use WO O A YE BA w Never operate the rotating cylinder selector valve while the spindle is rotating Otherwise the gripped work piece may come off and fly out Never put any part of your body inside the spindle cover while the spindle is rotating Otherwise you may be caught in the rotating elements Route the solenoid valves so that the chuck keeps clamping the work piece even if the power is interrupted Otherwise the gripped work piece may come off and fly out Keep the hydraulic pressure constant while the chuck is gripping the work piece Otherwise the gripped work piece may come off and fly out ARNING Turn off the power before installing inspecting or servicing the chuck Otherwise you may be caught in the rotating elements Always operate the chuck within the maximum speed described in the
68. e while rotating A door or guard must be provided to prevent anyone from approaching the spinning chuck NOTE ANSI B11 6 1984 prescribes use of a door or a guard to keep the operator from approaching the rotating part s A DANGER Never operate the rotating cylinder selector valve while the spindle is rotating Otherwise the gripped work piece may come off and fly out NOTE ANSI B11 6 1984 prescribes the installation of a safety circuit to nullify opening or closing of the chuck during its rotation and the need to protect the operator from inadvertent opening or closing of the chuck usually by a shield ANSI B11 6 1984 also requires that when a foot pedal switch is used it must be protected from inadvertent operation 3 6 4 End of Operations AA WARNING Remove the work piece from the chuck at the end of operations If the work piece is left gripped in the chuck the cylinder supply pressure may decrease or the work piece may fall oft due to mistaken operations it may cause severe personal injury and machine damage 16 4 Maintenance 4 1 Lubrication The most frequent cause of chuck failure is insufficient or improper lubrication If lubrication is insufficient or if a non specified lubricant is used not only will wear be accelerated the gripping force will be inadequate with the possibility of the work piece coming off during the cutting operation Adhere to the following guidelines for lubrication
69. h for other purposes than replacing top jaws Free MI P Special wrench m Master Jaw l Eccentric Cam Rack v Base Jaw mes TL ia a teas Top Jaw E OT F E e 7 ll REAR C U Pl FRONT FR EE Draw Screw Le y T Wedge Plunger Chuck Bod such as attempting to turn the chuck holding the wrench by knob or the wrench would be damaged NOTE This manual regards the top jaw side as front and the draw screw side as rear 2 Installation 2 1 Unpacking Take the chuck out of the package box At this time be careful not to take out or lift it by hands This is because 8 inch or larger chucks weigh over 20 kg and lifting such a heavy chuck may cause damage to your lumbar or injury by dropping the chuck Instead break open the box and screw an eyebolt into the screw hole outside the chuck Then use a chain block to lift the chuck A CAUTION Use the eyebolt when installing or removing the chuck You may drop the chuck or suffer fr
70. he rotational cylinder and Fig 2 the plunger stroke of the chuck must be equal eee If the rotational cylinder stroke is longer than the plunger stroke of the chuck the former must be adjusted to the latter As the ways to control the cylinder stroke are different depending on types and sizes consult Z Howa for necessary information before the stroke adjustment But instead of regulating the cylinder stroke of the rotational cylinder the a stroke end can be created by contacting the end edge of the wedge A mm plunger to the front end of the chuck adapter In this case the chuck adapter s front end must be the shape as shown in Fig 2 and Table 1 Table 1 mm D2 D1 2 5 Installing Procedure 2 5 1 Before Installation After taking the chuck out of the package box wipe off all anticorrosive oil clinging to it with a cloth permeated with cleaning oil re WARNIN Never use the chuck with a vertical lathe If this chuck is used with a vertical lathe cutting tips may heap up around the rack and interfere the jaw change operation Fig 3 2 5 2 Removing Draw Screw Draw Screw The draw screw must be given an internal Retainer thread so as to be connectable to the connecting pipe in order for the chuck to be operated Thus the draw screw must be removed from the wedge plunger Remove the retainer to permit draw screw removal Be
71. he stroke when they grip the work piece Insufficient pressure Increase pressure to the set level Top jaws do not match the work piece diameter Correct top jaws forming in right way Excessive cutting force Calculate the cutting force to see if it matches the specification of chuck Insufficient lubrication at master jaws and sliding parts Supply grease from grease nipples and oil to each jaw way of base jaws Then conduct open close operation of the jaw several times while the work piece is not gripped Excessive speed of revolutions Chuck runs out Reduce the speed till the necessary gripping force is assured Check peripheral and end face run out and retighten bolts Stopper end face runs out Correct the run out stopper end face Dust is caught by rack part of base jaws or of master jaws Remove top jaws clean rack part thoroughly to remove dust Jaws fastening bolts are not tightened securely Fasten bolts sufficiently but not too much Jaws are not formed properly Confirm if the forming plug or the forming ring is in parallel with chuck s end face and if the forming plug or the forming ring is not deformed by gripping force Also check forming pressure and jaws surface roughness Jaws are deformed or jaws fastening bolts are extended due to excessive jaws height Lower the height of jaws as much as possible Excessive jaw height may reduce the servi
72. her things the degree of wear and tear then existing on the jaws of the chuck which may effect their ability to grip the work piece The jaws or chuck body should be replaced and or properly refurbished if the surface of the master jaw or the chuck body deteriorates so that gripping force is lost In addition depending upon the usage received by the chuck the gripping force should be measured periodically with a gage There should be a regular inspection for cleanliness as a function of the ability of the chuck to grip a work piece even though its gripping pressure may remain constant The chuck speed should be reviewed with each change in job Including reference to the feeding speed of a work piece a change in the size and weight of a work piece the composition of a work piece the type of cuts or machining performed and the speed or rate of cut A WARNING Do not leave the chuck in the state where its top jaws are not tightened If the spindle is rotated in such a state the jaws or nuts will fly out causing serious or fatal injury to the operator or bystanders 4A WARNING Aside from damage to the chuck the chuck will be able to maintain a constant gripping force upon a work piece assuming that the hydraulic or pneumatic operating pressures do not change However the ability of the chuck to hold a work piece will deteriorate with wear and tear on the surfaces of the jaws of the chuck which will tend to reduce the coefficient of fric
73. ide diameter OD of the Q dL work piece with the jaws one fourth of the inside stroke should remain while you are gripping the GOOD NO GOOD inside diameter ID with the jaws the remaining L jaw stroke portion of the stroke should be on the outside refer to 2 Fig 11 2 MM at 2 D The cylinder pressure when the top jaws are formed Qg p fi ee She Me should be the same as when the work piece is gL actually being cut See Fig 12 for the specific steps for forming the top jaws Do not grip near the end of the jaw stroke A WARNING Forged or molded work pieces have surface irregularity as far as they are not machined The chuck may not be able to grip such a work piece in a stable state Gripping a forged or molded work piece not machined near the end of the jaw stroke will cause insufficient gripping force and the application of the tool to the work piece may cause the work piece to slip out of the jaws and fly off This may cause severe personal injury or death to the operator or bystanders 11 Prepare a formed plug Prepare a formed ring Open the master jaws to the limit by operating the hydraulic or pneumatic circuit Then form D part where the plug is held Diameter D is given by following formula d diameter of plug dd lt DS d max jaw stroke x 0 75
74. ing stability so that the work piece can be gripped just as if the jaws were rising in the forming condition Method for gripping Method for gripping formed plug near the formed ring on the chuck end face ULAR gt ah top jaw surface Formed Plug Formed Ring Fig 13 Fig 14 3 4 Installing Stopper To position the work piece in the chuck s axial turning direction the work piece must be pushed to the top of the jaws or the chuck s front face But in some cases depending on the work piece configuration a stopper has to be installed on the front face of the chuck When designing a stopper obtain our approval of the stopper drawings Howa is not responsible for any accidents caused by a stopper designed without our approval 3 5 Setting Working Conditions The chuck using conditions includes not only cutting force but also many factors such as cutting force work gripping length work protruding length friction coefficient and rotational speed In order to determine the ideal working conditions all of these factors must be given due consideration with considerable time necessary to perform the calculations The VDI Standard No 3 106 put out by the German Technicians Association is a good reference in this regard For your copy write Beuth Verlag GmbH Postfach 1145 1000 Berlin 30 West Germany NOTE Howa is happy to send you a co
75. l Both words mean total force of clamping each jaw in a chuck 1 Construction and Operation 1 1 Model Coding The quick change through hole power chucks are model coded as follows H018M A JIS specified spindle nose No No mark Having a straight socket for installation of chuck standard model Including an adapter or a back plate Spindle nose No 6 8 or 11 Size No 8 10 12 15 1 2 Construction and Operation The quick change through hole power chuck basically consists of a chuck body a wedge plunger master jaws and base jaws The wedge plunger and master jaws protrude so as to engage the T slot arranged so as to be at an angle in relation to the rotational center of the chuck body When the wedge plunger is drawn to the rear the master jaws are pulled toward the center and the outside of the work piece is gripped by the top jaws OD chucking When the wedge plunger is pressed forward the master jaws will move outward and the inside of the work piece is gripped by the top jaws ID chucking The master jaw incorporates a rack and eccentric cam By turning them 180 counterclockwise using a_ special wrench furnished the engagement of the master jaw with the base jaw can be easily released This allows the top jaw combined with the base jaw to be repositioned reversed and replaced quickly For safety the special wrench cannot be removed in this state Do not use this wrenc
76. la 19 12 15 6 5 RG DENDE
77. ly out causing severe injury or death to the operator and or bystanders 3 6 2 When Gripping Work piece NOTE When gripping the work piece with the chuck be careful not to get any part of your body caught between the top jaws and the work piece or between the work piece and the machine The operator s hand may be injured ANSI B11 6 1984 prescribes installation of a shielding cover guard so that no part of the operator s body can be caught between a part of the chuck and the surface of the work piece when the space in between exceeds 1 4 inch with the jaws fully opened 15 3 6 3 During Cutting Operations In any of the following cases the tool impact on initial cutting contact may result in an unexpected cutting force in excess of chuck work holding capacity The back end of the work piece is away from the chuck s stopper face The rotating center of the work piece is not aligned with the chuck rotating center The work piece is a casting or forging part having a projecting gate or burr This may cause the work piece to slip out which may in turn cause severe injury or death to the operator or bystanders If this situation is possible begin tool contact with the work piece initially during a low speed test run 4A WARNING Severe personal injury may result if the operator mistakenly comes into contact with a spinning chuck whose top jaws or gripped work piece have irregular contours which are not readily visibl
78. ns For Use 3 1 Selecting Top Jaws The chuck is equipped with a set of standard soft top jaws and base jaws We are ready to prepare standard hardened jaws and special top jaws as optional accessories at your request If necessary place an order your from nearest Howa representative We disclaim all the warranties and responsibility for accidents caused by use of the top jaws not prepared by Howa AA WARNING For all the chuck parts including consumables place an order with Howa Machinery Ltd Howa shall not be liable for any accidents caused by use of parts not supplied from Howa Any and all warranties are invalid unless only Howa s genuine parts are used Do not use any top jaws which are heavier than those supplied with this chuck If the mounted jaws are heavier than the standard soft jaws or standard hardened jaws the chuck will lose extra gripping force by the centrifugal force due to excess in weight This in turn may cause the work piece to fly off and may cause severe personal injury or death to the operator or bystanders WARNING When using the top jaws that are higher than the standard top jaws lower the cylinder force in inverse proportion to the top jaw height If the distance H from the chuck front end face to the gripping position is 4A WARNING greater than the height X of the standard soft top jaws dimension X in the following figure or in the table of dimensions a force larger than the allowable value i
79. nstallation is carried out with using an eyebolt If you rotate the chuck with the eyebolt being screwed you may be caught by the part of your body or clothing and get injured 2 5 7 Inspection Operational resistance develops when there is some abnormality in the installation procedure If the chuck is used without removal of the resistance parts seizure or abnormal wear may occur causing marked shortening of service life Once the installation has been completed be sure to check out the minimum operating pressure If it is too high remove the chuck and solve the trouble 8 2 5 8 Balance When the chuck is additionally machined or equipped with jigs ensure that the chuck weight is balanced Unbalanced chuck will cause vibration and fail to maintain required machining accuracy When machining an unbalanced work piece take the eccentric mass of the work piece into consideration and rotate the chuck at a low speed This is because the centrifugal force due to eccentric mass applies to the top jaws The chuck balance described in this manual is based on the standard balance quality 4 mm s defined in JIS BO905 1992 and the unbalance amount of the chuck periphery is specified as shown in Table 7 International Standards that correspond to JIS B0905 1992 are ISO1940 1 1986 and ISO8821 1989 Table 7 Chucksize 8 10 12 15 LMax unbalance 9 3 4 6 10 3 Precautio
80. nting smooth operation Disassembly and cleaning must be done on a regular basis every 1000 hours When doing so inspect carefully for parts wear and breakage replacing as necessary 4A WARNING If the chuck interior becomes jammed with chips the gripping force will decrease or the jaw stroke will become short If cutting is performed under such a condition the work piece may be disengaged from the chuck causing severe injury or death to the operator and or bystanders 17 4 2 1 Disassembling Procedure 1 Remove the chuck installing bolts 27 2 Remove the holder 3 and collar 2 Remove the chuck with turning the draw screw 6 by the special wrench furnished Remove the base jaw 12 with the top jaw 14 Remove the bolt 30 from the chuck body 1 Remove the dust proofer 11 from the master jaw 10 Remove the wedge plunger 5 from the chuck body 1 by tapping with a wooden hammer Remove the master jaw 10 from the chuck body 1 3 4 5 6 7 8 Remove the cover 19 and the eccentric cam 20 and then pull out the rack 16 3 4 5 6 7 8 In reassembling the chuck apply a sufficient coat of specified grease to each of its parts and assemble them by reversing the disassembling procedure 4 3 Setting Safe Rotational Speed ANSI B11 6 1984 section 7 1 9 suggests guidelines for setting a safe rotational speed A safe rotational speed will be a function of the consideration of among ot
81. om lumbar injury due to excessive load 2 2 Accessories The package box contains the accessories besides the chuck itself Please refer to the section 6 5 Accessories for particulars 2 3 Preparations for Installation Except the direct mount chuck of A type a chuck adapter is needed to install the chuck onto the lathe spindle Contact us if you need information on how to design a chuck adapter Especially if the cylinder stroke of the rotating cylinder is longer than the plunger stroke of the chuck design the chuck adapter so that the front edge of the chuck adapter regulates the wedge plunger movement In addition to the chuck adapter a rotating cylinder a cylinder adapter a connecting pipe and either a hydraulic or pneumatic pressure source are required to operate the chuck However please refer to the Rotating Cylinder Instruction Manual for what pertains to them We upon request will review drawings for the connecting pipe A WARNING The user must fabricate a connecting pipe in accordance with the lathe used and the chuck which has been selected It is extremely important that connecting pipe wall thickness be sufficient to assure rigidity and strength Insufficient strength or rigidity will cause breakage of the connecting pipe and instantaneous loss of gripping force to the chuck This may cause the work piece to be released during operation 2 4 Stroke Control For the HO018M chuck the cylinder stroke of t
82. onfiguration as if the jaws wrap the work piece Also when the outside diameter of the work piece is not perfectly round the top jaws should be of a swivel type that allows the gripping force to be applied equally at six positions We assume no responsibility for any accidents caused by use of top jaws manufactured without our approval 3 6 Precautions for Operation We are the chuck manufacturer and are not responsible for the safe operation of the combined chuck and lathe or machining center into which the chuck is installed There exist numerous rules and guides for overall safe operation among the most respected is ANSI B11 6 1984 Nonetheless while reference may be made to ANSI and or specifications mere mechanical compliance with ANSI and or other standards does not ensure safety All standards should be considered only as elements of an overall safety consideration and when considered alone constitute only minimum standards What follows is a partial enumeration of universal precautions which should be taken in the normal course of operation Particular steps beyond or in addition to those which will be discussed below must be determined by the individual user after a complete review of all aspects of the work to be done AA WARNING A failure to guard the machine as whole may lead to serious injury or death to the operator or bystanders 14 3 6 1 Before Gripping Work piece NOTE Before beginning operations
83. py of the English version of the above standard upon request 4A WARNING The maximum applicable chuck speed as indicated in the specification table or catalogue shows a guideline and is defined as the speed obtained under the following conditions The standard soft jaws are so installed that their peripheral surface coincides with that of the master jaws The gripping force measuring instrument is held around the middle of the adjustable range of jaw stroke with the permissible cylinder force and the standard soft jaws The gripping force becomes one third of the gripping force in the stationary state Hence this speed is not suitable to assure safety in every situation because it is greatly influenced by top jaw configuration weight dimensions and shape cutting force gripping force and the maintenance conditions All such influencing factors fall within the realm of user responsibility Excessively high rotational speeds for a given set of conditions may cause the work piece to fly off and may in turn cause serious injury or death to tL a 3 5 1 Permissible Cylinder Force The permissible cylinder force indicated in the specification table or catalogue is the maximum cylinder force at which the chuck will not suffer damage presuming those standard soft jaws or standard hardened jaws are used This maximum force may be used as require
84. s above mentioned Diameter d should be formed in the same diameter as the gripping diameter of the work piece approx allowance h6 and its surface finish should be better than 1 6a A finished surface with a higher precision will be obtained if the formed ring is re gripped before the final finish forming After finished forming of top jaws grip the work piece and make sure that required jaw stroke and gripping accuracy are obtained Chuck center line for Chuck center line for Sq forming dd forming D Chuck center line for forming d After finished forming of top jaws grip the work piece and make sure that required jaw stroke and gripping accuracy are obtained Chuck center line for forming D 12 Remarks When machining a bar stock keep in mind that the chuck may lose stable gripping force and the work piece may slip because a long work piece may vibrate and the top jaws cannot firmly grip a work piece with a smaller diameter In such a case secure a greater gripping length in the axial direction to improve gripping stability Figures 13 and 14 show examples of top jaws formed to secure a greater work piece gripping length by moving the gripping location of the formed plug from near the chuck end face to the upper jaw surface The tops jaws are also formed to increase the gripp
85. s applied to the top jaw installation bolts even when the chuck is operated within the permissible cylinder force specified in the specification or product catalogue As a result the installation bolts may be broken and the top jaws and or work piece may come off This may in turn Cause severe personal injury or death to the operator or bystanders Even if the top jaws installation bolt does not break the great force exerted upon the sliding portion of the base jaws due to this peculiar application procedure will shorten service life considerably H gt X Max input force in Spec table lt 3 2 Installing Top Jaws Each top jaw is combined with its base jaw The base Fig 9 jaw engages with the master jaw and can be released Match Mark from the master jaw easily by manipulating the rack assembled to the master jaw using a special wrench furnished The base jaw is not serrated beyond the adjustable rang and cannot engage with the master jaw beyond that rang Whether or not the base jaw is within the adjustable range can be found by checking If the match mark in the middle of the base jaw is within the rang of scale mark in the middle of the base jaw is within the range of scale marks provided on the end face of the chuck 1 Select the top jaws in terms of the work piece and install them on the chuck Before doing so however clean its rack and that of the master jaw and jaw way for base
86. terial and or workmanship Seller at its option will repair or replace any products returned intact to the factory transportation charges prepaid which seller upon inspection shall determine to be defective in material and or workmanship The foregoing shall constitute the sole remedy for any breach of seller s warranty Seller makes no warranties either express or implied except as provided herein including without limitation thereof warranties as to marketability merchantability for a particular purpose or use or against infringement of any patent In no event shall seller be liable for any direct incidental or consequential damages of any nature or losses or expenses resulting from any defective product or the use of any product 20110106 23
87. this manual and the objective product Another copy of this manual is also available from the following address HOWA MACHINERY LTD INDUSTRIAL EQUIPMENT GROUP MACHINERY DIVISION 1900 1 SUKAGUCHI KIYOSU AICHI 452 8601 JAPAN Phone International access code 81 52 408 1254 Facsimile International access code 81 52 409 3766 6 The values of this manual are described in SI unit system Values of former unit system can be obtained by following calculations Pressure 1MPa 10 197kgf cm Force 1kN 101 97kgf Torque 1N m 0 10197kgf m Safety Information This manual contains warning messages for safe operation that are indicated by Safety Alert Symbols Carefully read and fully understand these messages The danger levels of the Safety Alert Symbols are defined below Indicates an imminently hazardous situation which if not avoided will result in death or serious injury These warning massages include the preventive actions those are indispensable to avoid danger Indicates a potentially hazardous situation which if not avoided could result in death or serious injury These warning massages include the preventive actions those are indispensable to avoid danger 4A WARNING Indicates a potentially hazardous situation which if not avoided could result in minor injury or machine damage Ay CAUTION There are many hazardous situations that may occur during operation inspection and maintenance of the chuck used un
88. tion between the jaws and the work piece The ability of the jaws to hold the work piece will depend upon the work piece itself A larger diameter heavier work piece for example will exert greater force against the jaws of the chuck and therefore will more easily overcome the gripping capability of the jaws of the chuck Increase in the rpm will also add to the force which tends to pull the work piece out of the chuck and improper maintenance in the form of dirt rust improper or inadequate lubrication will also diminish the ability of the chuck to hold a work piece Finally the manner in which the work piece is machined in the lathe or machining center will determine the precise forces exerted on the work piece and therefore on the jaws of the chuck and may overcome the ability of the jaws to hold the work piece It is therefore absolutely required that the ability of the jaws of the chuck to hold the work piece be reviewed with each new set up or job and periodically during the course of a long job Machine operations of the lathe which produce forces sufficient to overcome the gripping force of the jaws of this chuck will cause the work piece to fly out which in turn may cause severe injury or death to the operator or bystanders 4 4 Parts List Parts Name Chuck body Parts Name Collar Stopper Holder Screw O ring Hex socket head bolt Wedge plunger Hex socket head bolt Draw screw Screw
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