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Contents
1.2. Table of contents Introduction Safety Information Safety Precautions 1 Construction and Operation pp 4 1 1 Model Coding xiscitc sl t
3. 6O 0 010mm TIR
4. 2 2 1 pa 4 8 2 Oke JL 6 8
5. lt TE ua began
6. 2 R2 6 TIR TIR T R T R 3 3 Nm A zs
7. 4 2 1OOO AzS EDET 16 A
8. A zs ANSI B1 1 6 1984 section 4 3 2 372 ar SO a SG A SS
9. 3 6 1
10. 4 4 oO O O EE N 10INDINOI 3 6 oOo oO A oO Oo 00 Na ola Al wim oo O00 NO AA WN O N B oO N Oo N N
11. OF ANSI B1 1 6 1984 A TANS B1 1 6 1984 ANSI B1 1 6 1984 3 7 4
12. 3 7 ANSI B1 1 6 ANSI
13. 3 7 1 ax OO TANSI B11 6 1984
14. 15 4 4 1 EFE M13 ISO VG68 6 1 E sao D 2 a
15. 3 2 7 L1 L2 L1 L2 L2 3 3 p G
16. eas REDEDIC 4 w
17. lt 9 ee Oo 1 SW 9 6e 8a 0 2 a mL 2 gt ig OF gt ig OF gt ig OF
18. VDI No31O6 VDI No 3106 VDI No 3106 6 3
19. TANS B11 6 1984 Cid 1 4 6 mm 14 3 7 3 ax 5 Az zs
20. 24 2 5 2 5 1 3 2 5 2 oom Zh 0010 C E C
21. 1 1 4 GD 2 6 2 WA 210 254 304 170 220 220 5 5 5 115 133 139 104 8 133 4 171 4 1714 3 M10X1 5 3 M12X1 75 3 M16x2 6 M16x2 14 18 24 23 M16x2 M16X2 M20X2 5 M24X 3 31 40 40 SO 19 18 15 5 15 5 17 5 17 5 17 5 18 36 5 36 5 35 5 49 60 5 64 5 67 67 5 45 5 445 42 425 80 102 5 100 L K3_IK2_K1 22 6 3 X
22. 8 12 8 KN 2 0 1 5 1 0 0 5 N mm 6 2059 8 2764 10 A279 8 7 6 amp a h4 ft K 3 af 0 2 4 6 81012 14 D JET mm H3YS6 2 H3YS6 ye ta sl H3YS6 Pp 0 a ee 6 kN KN H3YS8 2 H3YS8 1 H3YS8 1 2 3 4 5 6 7 mm H3YS10 12 2 H3YS10 12 1 H3YS10 12 1 2 3 4 5 6 8 mm 3 6
23. 4 d dqd H7 H8 5 aed ERS BL J ttet 11 3 5 12
24. 10 3 4 SD 2110 eats sR 1 4 1 4
25. 2 2 6 6 gt 2 3 H3YS ADKF v y DARE
26. R e Re 1 6 O Ate
27. 3 FPS 1 oie SH h1 h2 YY 2 3 B ER
28. 2 TE E A 3 4 5 CE 7452 8601 SARATA O 1900 1 TEL 052 408 1254 FAX 052 409 3766 6 S 1MPa 1O0 197kgf cm2 lt 1kN 101 97kgf KILJ 1N m 0 1019Tkgf m RESSYUMHN
29. O 1 21 19 18 20 32 O 3 A 17 15 16 1 AMAL 13 37 7 OQ 14 4 3 TANSI B1 1 6 1984 section 7 1 9
30. DDS 12 2 SKN
31. cylinder transmitted to the top jaws Fgaing Cam through the floating cam and crank Draw Screw ae I lever when the draw screw is pulled to Draw Stud Fm the back word The top jaws pull the RoundNut Meal FRONT work piece down to the datum face on gt m d Pilot Bushing the chuck body TES l TE SB The floating cam is radially allowed to a Center move in a certain distance Work Locator A work piece is at first supported Pilot Bushin between the centers of the chuck and Spring tailstock on the lathe and then gripped at by the top jaws EE chuck Body Generally a work piece is machined in the state that the datum face is pushed to the work locator on the chuck The spring in the pilot bushing assembly is furnished in order to hold a work piece at the center of the chuck until the work piece is pushed to the work locator In case that the work piece has an eccentricity to the center hole each jaw clamps the work piece equally with approximately the same force by means of the movement of floating cam That is this model has a mechanism to clamps the work piece using the center hole as a datum Note This model is not applicable to internal clamping 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
32. X2 6 8 10 12 X2 mm 21 195 215 23 X2 y H3YS12 140 A 160 X2 23 _H3YS10 M Ae a 1 L lo 156 MOBS cara bos WE 140 HSYS12 L H3YS10 Pe 120 2 ao Sag g 100 Havsa TH S E Z 80 Haysg E X2195 R 60 40 H3YS6 40 H3YS6 X224 20 3200 13500 a 0 1000 2000 3000 4000 5000 0 10 20 3 40 50 r min X mm 6 4 H3YS 6 8 10 12 1 foal Pa 1 J79 J3 J10 J6 J
33. OO40COO5Omm Ni eg SS Sa 2 5 3 O oo 8 6 1 HARA f inti e A ol foo R e 1 gt ate 1 FA e a 10 12 Re
34. ME a 6 8 1 1 1 3 JIS AS A6 A8 6 8 10 12 H3YS 1 2 H3YS 3 1 ZEZ 1 X z
35. SN R 6 S 7 7 N m A 7
36. 2 54 m 20 HH4C O 5MPa 2 5 5 JIS BO9O5 1992 4mm s F
37. 5 JIS BO905 1992 ISO1940 1 1986 ISO8821 1989 RO Genz e se maeioxecier e 2 3 4 e 3 1
38. ag oe 6 RG 9 L ST a 2 msy 7 L S T ali 6 M1O 2 13 12 13 LLT 8 M12 2 14 12 13 10 M14 2 19 18 12 12 M16 2 20 18 17 Az zs
39. X3 6 OoO N W Oo N IN OoO N oO X 12 6 3 DS 1H 8 DS 1H 8 OoO DS 1H 10 DS 1H 10 NIWL Oww gt oO AS568 164 AS568 168 AS568 1 76 AS568 2 75 oO P14 JIS P16 JIS P20 JIS P20 JIS X3 6 O P44 JIS P55 JIS P62 JIS 1 oO AS568 129 G55 JIS G65 JIS O P16 JIS P21 JIS OoO P38 JIS P49 JIS P24 JIS P52 JIS oO S32 NOK S40 NOK S46 NOK S53 NOK OoO P16 JIS P20 JIS P22A JIS P25 JIS oO S12 NOK AS568 015 AS568 01 7 AS568 01 7 oO AS568 131 AS568 136 AS568 140 AS568 145 S55 NOK S63 NOK S71 NOK S80 NOK 9 AS568 018 ASS68 020 ASS68 023 ASS68 026 OoO P14 JIS P14 JIS X 12 6 3
40. 4 OO5Omm T R 5 10 1 2 mm 3 OO 6 6 1 X2
41. 2 7 e t 7 vi l J i gt x 7 I pg 200 Ea
42. 9 3 3 9 3 4 11 3 5 12 36 o oeae 13 3 6 1 13 37 13 3 7 1 14 37 2 14 373 15 374 15 A 16 41 16 42 16 4 3 17 44 18 5 ee ee ee ee eee 20 6 21 Gli ER ek ae SS ae eS Ser eS 21 G2 eins ate Ste we ee aed ae ds 22 63 23 64 23 65 24 66 ee te tt tt et te wh he eh ee 24 OK Pk PS 24 1 H3YS 3
43. D 4 BB sO Gs
44. 48 P14 JIS P14 JIS IOINOIODOIOIWI 5 MBAS
45. Reduce the gripping force to a reasonable amount to assure proper machining Inappropriate spring force in the center Required spring force in the center is different depending on the rigidity of work piece the size of center hole and cutting condition Adjust the spring force with attached washer See page 12 Inadequate longitudinal gripping position in relation to the supported position by the center Bring the longitudinal gripping position as close as possible to the end face of the work piece where the center hole is located The center of headstock and tailstock is dislocated Adjust the center of tailstock to coincide that of headstock The thrust of tailstock is excessive The recommended range of thrust is generally from 2 to 5KN The center hole is too small The center hole that has less than 4 diameter is not applicable The center hole has a defect Visual check and repair it if necessary The run out of end face of the work piece is excessive Keep the between center run out of end face at the work piece where the locator is touched is less than 0 050mm T I R In case that the run out can t be eliminated consider the gripping with dead center which is not affected by the run out of end face The aspect ratio of work piece is extreme Very short or very long compare to the diameter Keep the aspect ratio between 5 to 10 The compensating mechanism is ma
46. 3 jaw compensating chucks are used to clamp unprocessed work pieces ex forged or casting In those cases the jaws with pointed shaped like standard hardened jaws are most suitable to keep better accuracy However in case that the marks on the work piece by clamping force are not allowed jaws are to be machine formed to align with the work piece Even in this case the circumferentially narrower clamping surfaces at the formed jaws as long as marks on the work piece are shallow enough are suitable for better result Fig 11 1 Prepare a formed plug The clamping surface for forming plug in the top jaw should be flat h1 d1 Clamp the forming plug h7 by this flat surface d2 h1 h2 H h2 D and H is determined by the shape or dimensions of top jaws 2 Remove the top jaws and the work locator 3 Grip the formed 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 4 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 H8 A finished surface with a higher precision will be obtained if the formed plug is re gripped before the final finish forming 5 After finished forming of top jaws grip the wor
47. 68 64 CITIO ITDNIM VIO 66 L K3 IK2 K1 22 6 3 Gripping Force Static gripping force Dynamic gripping force Dynamic gripping force kN 140 120 100 60 20 0 X2 23 chuck to the gripping surface X The gripping force depends on the height from the end face of the This represents the gripping force of standard top jaws during chuck rotation at the point away from the end face of the chuck toward the gripping surface by dimension of X2 Chuck size 6 8 10 12 LX2 _ mml 21 195 215 23 Dynamic gripping force at position X2 H3YS12 X2 H3YS10 X2 21 5 Hy ef 1 30 H3YS8 i X2 19 5 21 40 H3YS6 T X2 3200 3500 1000 2000 3000 4000 Rotational speed r min 6 4 Standard Hardened Jaws 5000 160 140 120 100 80 60 40 Static gripping force kN 20 0 Static gripping force at position X HsYs12 HaYs10 H3Ys8 H3YS6 10 20 30 40 50 60 Height from the end face of the chuck to gripping surface X mm The following table shows the dimensions of standard hardened jaws Top jaws are not prepared for the sta
48. 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 7 4 End of Operations 4A 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 15 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 eae l Recommended weer Lubrication Points Time of Lubrication Fig 13 Oil supply drain port ISO VG68 The plug behind a top jaw on the circumference lubricating oil or Once every six months is not a plug for oil of the chuck body equivalent Oil supply drain port Oil replacing Procedure 1 Remove the two plugs on the circumference of chuck body and K ae then drain the spoiled oil from the both of oil supply drain ports Cn ar Rotate the chuck body by hand several times slowly to drain the oil AK th
49. minimum operating pressure If it is too high remove the chuck and solve the trouble When a HH4C rotating hydraulic cylinder corresponding to the chuck size indicated in the specifications page 20 is used the minimum operating pressure will be equivalent to when 0 5MPa or more is used 2 5 5 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 5 International Standards that correspond to JIS BO905 1992 are ISO1940 1 1986 and 1SO8821 1989 Table 5 Chucksize 6 8 10 12 Max unbalance 9 2 3 4 6 3 Precautions For Use 3 1 Selecting Top Jaws Top jaws are not included in the standard equipment 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
50. the preventive actions those are indispensable to avoid danger 4A DANGER AA WARNING 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 Indicates a potentially hazardous situation which if not avoided A CAUTION could result in minor injury or machine damage There are many hazardous situations that may occur during operation inspection and maintenance of the chuck used under 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 Never operate the rotating cylinder selector valve while the spindle is rotating Otherwise the gripped work piece may come off and fly out w 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 w Route th
51. way to disassembling procedure applying specified lubricating oil sufficiently Finally pour in lubricating oil of the specified quantity from oil supply drain port a 4 3 Setting Safe Rotational Speed ANSI B 11 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 other 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 crank lever 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 4A 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 will fly out causing serious or fatal injury to the operator or bystanders 17 A
52. 10 12 a Without washer 0 1 2 3 4 5 6 7 8 Center stroke mm 12 3 6 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 copy of the English version of the above standard upon request 4A WARNING The gripping force during rotation can be determined from the chart in subsection 6 3 Gripping Force The values shown in this chart are obtained under the following conditions Standard hardened top jaws are installed The gripping force measuring instrument is held at the position that the each mounting surface for top jaw is parallel to the chuck body Gripped with maximum cylinder force The allowable maximum rotational speed is arbitrarily determined by Howa in consideration of the chuck performance and the strength of each part Hence this speed is not suitable to assure safety in every situation because it is greatly influenced by top jaw configurati
53. 11 aQ tA i kE J9 J15 J1 J7 D23 6 5 2mm 6 6 6 8 10 12 M1O M12 8 M16 M16 z L 90 L 115 L 135 L 140 B 4 1 B 4 1 B 4 1 B 4 1 EER B 8 1 B 8 1 B 8 1 B 8 1 B 10 1 B 4 B 14 1 B 14 1 B 8 1 B 8 1 _ 9 4 B 10 4 pce 19 2 24 2 29 2 29 2 M1O 1 M1O 1 M12 1
54. Any and all warranties are invalid unless only Howa s genuine parts are used Use eyebolts when mounting or removing the chuck Use the suspender belt when handing a 6 inch chuck and eyebolt when handling an 8 inch or larger chuck 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 manual Both words mean total force of clamping each jaw in a chuck 1 Construction and Operation 1 1 Model Coding The SWING JAW 3 jaw compensating chucks are model coded as follows H3YS L JIS specified spindle nose No No mark Having a straight socket for installation of chuck standard model Including an adapter Spindle nose No A5 A6 A8 Size No 6 8 10 12 1 2 Construction and Operation The SWING JAW 3 jaw compensating chuck of models H3YS basically Fig 1 consists of a chuck body draw sleeve assembly crank lever and pilot raw Sleeve Mgal Cover bushing assembly The out put force and movement of Crank Lever Falcrum Pin Top Jaw z a Option Draw Sleeve
55. HSN 83MNIVAYR T41 VIF VD SWING JAW type 3 JAW COMPENSATING CHUCK HGYS INSTRUCTION MANUAL A 4A IMPORTANT Be sure to read and understand this instruction manual thoroughly before ere To ra one a Z 18anr e TENKA ownership of this product is transferred submit this manual to the new owner Se AIS AKT ETIL HOWA MACHINERY LTD 1 4 1 1 4 12 E rae a ee DR es ee ee o 4 2 5 2 1 ee te ee ee ee ee ee ee 5 22 ee ee te ee we we we wh ee 5 23 eee aE cates Gel Soe ae ene Ge el eat Se os 5 24 o EE RG EE I ie 5 25 6 2 5 1 6 2 5 2 ace Bias 6 253 6 254 8 255 6 est ee Oe hee ee 8 3 8 34 8 3 2
56. Oo D TR H gt ig OF G X w NILE DEA w Nem 74 124 294 579 101 128 161 lt gt 6 1 ISO VG68 COREA
57. S P21 JIS G65 JIS P24 JIS G65 JIS P24 JIS O ring P38 JIS P49 JIS P52 JIS P60 JIS O ring 32 NOK S40 NOK S46 NOK 53 NOK O ring P16 JIS P20 JIS P22A JIS P25 JIS O ring 12 NOK AS568 015 AS568 017 AS568 017 O ring AS568 131 AS568 136 AS568 140 AS568 145 O ring 55 NOK S63 NOK S71 NOK S80 NOK O ring AS568 018 AS568 020 AS568 023 AS568 026 O ring P14 JIS P14 JIS 12 inch use six parts and other sizes use three parts 19 P14 JIS P14 JIS NP PP PPI 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 Possible cause Recommended remedy Chuck does not operate Insufficient crank lever stroke Work piece slips Poor accuracy Damaged parts on chuck 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 rod Insufficient top jaws stroke Remove the rotating cylinder and retighten Adjust so
58. S 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 this manual and the objective product Another copy of this manual is also available from the following address HOWA MACHINERY LTD MACHINE TOOL ACCESSORIES TEAM SALES GROUP CREATIVE ENGINEERING DIVISION MACHINERY DEPT 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 97kof 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
59. VCHICEeHMUCHOED SS A 3 BBSU lt MICE SSDI LTELSCEN S nes ah oO LES A Iig a A
60. ation among the most respected is ANSI B1 1 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 A failure to guard the machine as whole may lead to serious injury AA WARNING or death to the operator or bystanders 13 3 7 1 Before Gripping Work piece 4A WARNING Before beginning operations 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 NOTE 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
61. d free from defects in material 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 20130130 24
62. e area of the sliding surface or draw sleeve thus preventing 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 A 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 A CAUTION If the seals are worn or inside parts are damaged replace them in this opportunity Disassembling Procedure 1 Remove the two plugs 21 on the circumference of chuck body 1 and then drain the spoiled oil from the both of oil supply drain ports 2 Remove the top jaws 19 and retainer 18 and plug B 20 and plug 32 on the back end of the rear cover 2 3 Remove the rear cover and pilot bushing 3 assembly using the jack bolt 4 Remove the plug A 17 on the circumference of chuck body and takes out a pin 15 and a spring 16 5 Remove the setscrew 31 on the circumference of the chuck body and remove the fulcrum pin 13 by striking it out from the side in which the grease nipple 37 is attached by a pipe that has nearly the same diameter as that of the fulcrum pin 6 Remove the draw sleeve 7 assembly 7 Remove the crank levers 17 from the chuck body Reassemble the chuck with reverse
63. e 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 al Keep the hydraulic pressure constant while the chuck is gripping the work piece Otherwise the gripped work piece may come off and fly out w Turn off the power before installing inspecting or servicing the chuck Otherwise you may be caught in the rotating elements Q X Always operate the chuck within the maximum speed described in the specification table Increase in the chuck speed lowers the gripping force and the chuck may lose hold of the work piece w Securely tighten the bolts with the specified torque Otherwise the bolts may become loose or damaged resulting in w 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 Bolt size M5 M6 M8 M10 M12 M14 M16 Tightening torque N m 7 1 12 1 294 57 9 101 128 161 Replace lubricating oil periodically w Failure to replace lubricating oil may remarkably shorten the lifetime of the chuck Replace lubricating oil once in six months of operation Use ISO VG68 lubricating oil or equivalent 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
64. ed Adapter 5 Hoist the chuck with the chain block and screw in the Spindle draw screw into the connecting rod until it can be ara ree tightened no more z AQ CAUTION al Use extra care when operating the hydraulic or Ted pneumatic circuit during the chuck installation EEEH If you actuate such circuits accidentally during chuck oS installation you may be caught between the chuck body eo need SG and the spindle or between the top jaw resulting in injury 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 the center and the end face the work locator do not deviate exceeding the limits indicated in Table 2 Table 2 Chuck size Runout the outer periphery the chuck body T LR Runout the end face the chuck body T I R mm Runout the outer periphery the center T I R Runout the end face the work locator T I R For the torque to be applied to the chuck installing bolt refer to Table 3 mm Table 3 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
65. inch with the jaws fully opened 14 3 7 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 visible 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
66. ions of the top jaw and the crank lever are damaged it is similar to when dirt clings to the fitting portions the top 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 jaws engage with the fitting portions of the crank lever and the arrangement is secured with the bolts Therefore this must not be used in areas other than specified 3 Install the top jaws to the specified position on the crank lever using the number of bolts indicated in Table 6 Table 6 No of bolts per top jaws Fig 9 Crank Lever er ST Top Jaw 4A WARNING Secure the top jaw with the specified number or bolts Be sure to chouse the bolts with appropriate length If less bolts than shown in Table 6 are used to fix the top jaw the top jaw or bolts may break If the screw in depth S of the bolts fixing the top jaw to the crank lever is too short the bolts or crank lever may break In either case the top jaw or work piece may fly off and in turn may Cause severe personal injury or death to the operator or bystanders 4 Tighten the bolts for top jaw installation bolt with the fastening bolt shown in Table 7 Table 7 Tightening torque N m Use exact torque for fastening bolts If less torque is used than specified in Table 7 above the bolts may loosen in the top jaws and or the work piece could come off If
67. jaws or the locator does not interfere with the turret or tools AA WARNING To make sure that there will be no interference of the top jaws or locator 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 locator to fly off which may lead to severe injury or death to the operator and or bystanders AA WARNING 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 fly out causing severe injury or death to the operator and or bystanders 3 7 2 When Gripping Work piece A CAUTION 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 NOTE 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
68. k piece in top jaws and check that required jaw stroke and gripping accuracy are obtained Note Depending on the shape of top jaws it can be necessary to detach the top jaws from the chuck before inserting the forming plug After forming top jaws detach the top jaws to take out the forming plug 3 5 Adjustment of the spring force in the center Required spring force in the center is varied depending on the rigidity of work piece the size of center hole and cutting condition Determine the appropriate center stroke for the size of center hole on the work piece referring Table 8 and Fig 12 If the spring force is insufficient assemble the attached washer into the center to add the spring force Table 8 Coefficient of spring N mm 6 205 9 8 276 4 10 12 427 9 Fig 12 8 7 EE 6 E 5 S4 Sg 3 G 2 1 0 2 4 6 8 10 12 14 Center hole dia mm H3YS6 gt 20 Washer 2pics H3YS6 g 1 gt m Washer 1pics S 10 dD H3YS6 0 5 Without washer CD 0 1 2 3 4 5 6 H3YS8 Z Washer 2pics H3YS8 Washer 1pics D H3YS8 a Without washer 0 1 2 3 4 5 6 7 Center stroke mm H3YS10 12 4 Washer 2pics at _ t _ T H3YS10 12 5 2 Lae a Washer pics 2 1 H3YS
69. lfunctioning To confirm the function of compensating mechanism put an approx 2mm steel plate between one of three jaws and work piece and then check the three jaws gripped the work piece evenly and firmly when the jaws are closed This check is done with standard hardened jaws and the middle of jaw stroke Excessive clamping force deforms the work piece 20 To prevent the deformation of work piece decrease the ipping force within the processible range 6 Specifications 6 1 Specifications Series number Specifications Jaw movement Dia at X2 Plunger stroke Cylinder stroke Recommended chucking diameter for standard hardened jaws Compensation Z Max rotational speed Max input force Clamping force at Max input force kN kg m See Note 1 Weight without standard jaws kg Matching cylinder Moment of Inertia J Series number Max pressure to operate chuck Series number Max pressure to operate chuck Note 1 The four times of this value is equivalent to GD Note 2 When the Max speed of a rotating cylinder is lower than that a chuck observe that of a rotating cylinder MPa MPa 21 6 2 Dimensions Series number 210 254 170 220 5 5 5 92 115 133 104 8 133 4 171 4 3 M10 x 1 5 3 M12 x 1 75 3 M16 x 2 14 18 24 M16 x2 M16 x2 M20 x 2 5 31 40 40 19 18 15 5 17 5 17 5 17 5 36 5 36 5 35 5 60 5 64 5 45 5 44 5
70. ling Chuck 1 Remove the top jaws work locator and Fig 4 center before installing the chuck 2 The 8 inch or larger chuck has a screw hole for the eyebolt on the periphery L Top Jaw Screw the attached eyebolt into this hole Long Wrench and lift the chuck To lift and install the 6 inch chuck use the suspender belt 3 Advance the connecting rod to the ork Locator advance end by activating the hydraulic circuit In this state the distance Re between the TA Te front end face of the chuck adapter and CE that of the connecting rod will be as shown in Table 1 cannot be installed Table 1 Fig Re Chucksize 6 8 10 12 J Re 1 mm 50 49 46 5 47 J M16x2 M16x2 IM20x2 5 M24 x3 4 i a F Connecting rod Chuck adapter 7A AA WARNING Adjust the screw depth of the connecting rod Re to a proper length If the Re value is greater than that indicated in Table 1 the screw depth of the connecting rod is not long enough to fully engage with the draw 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 long wrench equipped from the front side of Fig 6 the chuck and check to see whether the draw screw can be turn
71. ndard equipment of the H3YS 1 J3 J10 J6 J11 20 J1 5 ol 2 9 gt J9 J15 J12 J8 J7 23 6 5 Allowable Machining Area of Chuck Body Tapped and or pin holes necessary for mounting a stopper or rough guide may be additionally machined on the chuck body within the boundaries defined below NOTE The periphery of each additional hole should be at least 2 mm away from the boundary The holes should be located and sized to maintain the chuck in balance 6 6 6 Accessories Depth X The package box contains the accessories besides the chuck itself Chuck size 6 8 10 12 Parts name Specification Q ty Specification Q ty Specification Q ty Specification Q ty Hex socket head bolt M10 3 M12 3 M16 3 M16 6 for mounting chuck L 90 L 115 L 135 L 140 B 4 1 B 4 1 B 4 1 B 4 1 B 8 1 B 8 1 B 8 1 B 8 1 en B 10 1 B 12 1 B 14 B 14 1 Long wrench B 8 1 B 8 1 B 10 1 B 10 1 Washer For spring regulation aie 4 pr oe Pa Eye bolt M10 1 M10 1 M12 1 LIMITED WARRANTY Seller warrants its products to be manufactured in accordance with published specifications an
72. ng 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 list Chuck body Hex socket head bolt Rear cover Button head cap screw Pilot bushing Setscrew Spring Setscrew Center Setscrew Work locator Setscrew Draw sleeve Plug Floating cam Seal washer Sleeve nut Key Draw stud Spring Draw screw Steel ball Round nut Grease nipple Fulcrum pin O ring Crank lever O ring Pin O ring Spring O ring Plug A O ring Retainer O ring Top jaw option O ring Plug B O ring Plug for oil O ring Hex socket head bolt O ring Hex socket head bolt O ring Hex socket head bolt O ring Hex socket head bolt O ring x 12 inch use six parts and other sizes use three parts 00 No 01 AJ PM gt w wm oo CD PP Po holeloeloelelelelel gt NO RP RP RR gt a 18 Seal list Parts Name Seal washer DS 1H 8 Mitsubishi Cable industries DS 1H 8 Mitsubishi Cable industries DS 1H 10 Mitsubishi Cable industries Mitsubishi Cable industries O ring AS568 164 AS568 168 AS568 176 AS568 275 O ring P14 JIS P16 JIS P20 JIS P20 JIS O ring P44 JIS P55 JIS P62 JIS P70 JIS O ring AS568 129 O ring P16 JIS G55 JI
73. ole en ees eres 4 1 2 Construction and Operation pp 4 stallatia 5 5 2 1 Unpacking EEE 5 2 2 Accessories UE 5 2 3 Preparations for Installation pp 5 24 Stroke COMO hk EE 5 2 5 Installation Procedure 6 2 5 1 Before Installation pp 6 2 5 2 Installing Chuck Adapter ppp 6 2 5 3 Installing Chuck pp 6 2 04 INSPOCIOMN SR nS EE 8 2 5 5 Balance eect 8 3 Precautions for Use RN 8 3 1 Selecting Top Jaws pp 8 3 2 Top Jaws Height ti 9 3 3 Installing Top Jaws pp 9 3 4 Forming Top JaWS ppp 11 3 5 Adjustment of the spring force in the center 12 3 6 Setting Working Conditions pp 13 3 6 1 Permissible Cylinder Force pp 13 3 7 Precautions for Operation pp 13 3 7 1 Before Gripping Work piece eee 14 3 7 2When Gripping Work piece 14 3 7 3 During Cutting Operations ens 15 3 7 4 End of Operations 15 4 Maintenance me 16 Ae Lubrication SS SS 16 4 2 Disassembly and Cleaning pp 17 4 3 Setting Safe Rotational Speed pp 17 4 4 Parts LISt RSS NRE 18 5 IroubleshootindS UN 20 6 Specifications ici 21 6 1 Specifications neran nnter ennenen 21 6 2 IDINIENSIONS et AFrbtetRteietr en Eer Eott 22 6 3 Gripping Force pp 23 6 4 Standard hardened Jaws RN 23 6 5 Allowable Machining Area of Chuck Body 24 6 6 AACCOSSOMES es 24 LMITED WARRANTY pp 24 Introduction 1 This instruction manual describes the SWING JAW 3 jaw compensating chuck H3Y
74. on 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 the operator or bystanders 3 6 1 Permissible Cylinder Force The permissible cylinder force indicated in the specification table or catalogue is a force at which the chuck will not suffer damage presuming standard hardened jaws are used This maximum force may be used as required 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 The use of excessive input force will lead to breakage of chuck AA WARNING 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 3 7 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 oper
75. onnecting rod wall thickness be sufficient to assure rigidity and strength Insufficient strength or rigidity will cause breakage of the connecting rod and instantaneous loss of gripping force to the chuck This may cause the work piece to be released during operation 2 4 Stroke Control Although the stroke of the rotating cylinder should not be controlled according to the chuck plunger draw sleeve assembly stroke adjust the draw screw so that the draw sleeve assembly contacts the rear cover of the chuck Attach here Draw Sleeve Assembly Rear Cover Chuck Body 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 Fig 3 2 5 2 Installing Chuck Adapter F10 005A Install the chuck adapter on the spindle end face 210 010 Then the chuck installing socket C and datum face should be x machined in place Ie The clearance of the chuck adapter in relation to the chuck installing socket C should be 0 040 0 050 mm in diameter Chuck Adapter Spindle 2 5 3 Instal
76. 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 counterclockwise After several turns the draw screw cannot be turned any longer Then turn it clockwise by the angle specified in Table 4 to give a gap between the draw sleeve and the end face of the chuck body NOTE The connecting rod should be retained at the advance end of the rotating cylinder 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 draw sleeve position Table 4 Chuck size 6 8 10 12 Turning angle numberof turns 8 Install the center the work locator 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 installation 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 4 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
77. oroughly aos ee 2 Screw in one plug into one of two oil supply drain ports and then Cr CAL pour recommended oil from another port to the brim see table 9 j D 3 Screw in another plug to the port where the oil is poured y 4 Open close the top jaws for several times without clamping a work pIece Plug for oil Both side Table 9 eee ea Lubricating oil quantity 1200 Approximate quantit WARNING nsufficient 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 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 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 WARNING if 16 4 2 Disassembly and Cleaning Even with proper lubrication fine chips or scale can enter the chuck to jam th
78. side 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 friction 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 grippi
79. that top jaws come near the center of the 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 Lubricating oil is spoiled Replace lubricating oil and open close the top jaws a few times while no work piece is 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 Center end face runs out Adjust the run out of 60 corned part of the center Dust has entered the installation surface of top jaws Remove top jaws clean the installation surface 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 is in parallel with chuck s end face and if the forming plug 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 service life of the chuck Work piece is deformed due to excessive gripping force
80. the torque is greater than that specified the crank lever 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 10 3 4 Forming Top Jaws Fig 10 When the top jaws are installed they must be machine formed to align flush with the work piece When the work piece is gripped the jaw stroke should be such that there is one fourth of the jaw stroke remaining as measured from the stroke end Thus if you are gripping the outside diameter OD of the work piece with the jaws one fourth of the inside stroke should remain The cylinder pressure when the top jaws are formed should be the same as when the work piece is actually being cut Note NO GOOD Sais Do not grip near the end of the jaw stroke 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 Generally speaking
81. 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 To lift a 6 inch chuck use a suspender belt To lift an 8 inch or larger chuck use an eyebolt You may drop the chuck or suffer from 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 6 Accessories for particulars 2 3 Preparations for Installation Except the direct mount chuck of H3YS 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 In addition to the chuck adapter a rotating cylinder a cylinder adapter a connecting rod 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 rod The user must fabricate a connecting rod in accordance with the lathe used and the chuck which has been selected It is extremely important that c
82. 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 4A WARNING Do not use any top jaws which are heavier than the standard hardened jaws If the mounted jaws are heavier than the 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 3 2 Top Jaws Height Keep the distance between the workpiece locator end face and the top jaw chucking point as small as possible to prevent poor accuracy because of tilting or bending the workpiece Keep dimensions L1 and L2 as short as possible 3 3 Installing Top Jaws 1 Select the top jaws in terms of the work piece and install them on the chuck Before doing so however clean off the fitting portions of the top jaw and crank lever with a compressed air blast What dirt or foreign matter remains can be loosened with cleaning oil brushed vigorously then blown off by compressed alr NOTE Fig 7 L2 Fig 8 Crank Lever Top Jaw ag When the end surface and the fitting port
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