Talyrond 265 service manual TH-SM
Contents
1. 5 1 1 Dhe 5 1 3 5 1 4 Most servicing can be undertaken on the Radial Straightness Unit RSU and the Vertical Straightness Unit VSU without removing the VSU from the instrument Base However the C amp L Table will need to be removed to gain access to the Spindle or the spindle drive mechanism including Spindle Pulse Board K508 930 Instructions for the removal of the TR265 C amp L Table and Spindle are given in Section 3 3 Instructions for the removal of the covers and the VSU are given in Section 3 4 REMOVAL AND DISMANTLING OF THE SPINDLE DRIVE Fig 3 1 4 1 The weight of the Spindle Drive Assembly is 4 6 kg Exercise care when removing the assembly from within the Base Frame 2 As access is restricted it will be necessary to remove the front and rear panels from the frame 3 For Plug and Socket connections refer to Section 4 1 Fig 4 1 4 Electrical Schematic 112 2852 01sh3 Remove the front and rear panels from the frame Disconnect the socket SK59 on the cableform K509 1335 from PL59 on the cableform K509 1330 from the Spindle Pulse Board K508 930 and disconnect the socket on the cableform K508 1335 from the plug on the cable from the spindle encoder assembly 4 Undo the two screws holding the spindle pulse board K508 930 to the spindle sleeve and remove the board Disconnect the two spade connectors from the drive motor 9 noting their positions for re assembly white ve black ve Support the weight of the2. Spindle Drive Assembly and remove the three M4 x 25 cap head screws D650 30425 and washers D680 103 securing the drive body 46 7198 to the underside of the spindle sleeve and lower and manoeuvre it out of the frame Remove the three M4 x 6 Socket Cap Screws D650 3046 and washers D680 104 and B671 204 10 holding the motor mounting plate 5 to the pillars B250 964 on the AV mounts B45 8461 on the drive body Release the tension on the drive belt 7 and taking care not to damage the drive belt remove the motor and mounting plate assembly from the drive body and remove the drive belt Talyrond 265 service manual TH SM 265 Issue 3 July 2002 RETURN TO CONTENTS 5 1 6 On the Drive Motor remove the Circlip B606 249 from above the pulley support H45 7974 and remove the pulley support Undo the M3 Cap Screw D650 30316 on the adaptor H45 7973 and remove the drive pulley clutch amp bearing B640 394 and adaptor assembly from the motor shaft 5 1 7 Undo the four M3 Cap Screws D650 3036 and spring washers B671 203 11 holding the motor to the Mounting Plate and separate these components 5 1 9 Undo the three M4 x 16 Socket Cap Screws D650 30416 and M4 Plain Washers D680 104 and remove the three pillars B250 964 from the AV mounts B45 8461 Undo the three M3 x 6 Cap Screws D650 3036 holding the Encoder Assembly 4 to the drive body and remove it The Spur Gear D643 73 can be removed from the Encoder if required by releasing the M2 x 5 Cheese He
3. drive to the Spindle 15 is transmitted by means of the Spring loaded Drive Pin 2 in the bottom thrust plate 14 of the Spindle which engages with a spring attached to the Drive Block 3 on the drive plate 4 A gear ring 12 on the drive pulley 11 drives a spur gear on the encoder 6 which provides positioning data A magnet in the housing 1 mounted on the bottom thrust plate 14 of the Spindle passes over a Spindle Pulse Board K508 930 fitted to the spindle sleeve not shown with each revolution which provides a pulse to act as the starting reference for data logging purposes For constructional details of this assembly see GA 510 1037 Fig 3 1 9 refers For Electrical details see Sections 4 1 and 4 7 Talyrond 265 service manual TH SM 265 Issue 3 July 2002 RETURN TO CONTENTS 4 PNEUMATIC SYSTEM CAUTION 4 1 4 2 It is essential that this instrument is supplied with compressed air of an adequate standard Section 1 3 Para 4 refers Refer to Fig 3 1 3 Compressed air is supplied to the instrument via the push fit air connector 1 and the sleeve valve at the back of the panel and is passed through a Tee junction to a non return valve on the front of the unit and then to the Filter Regulator Assembly 5 This provides the first stage of filtration and consists of a prefilter incorporating a 5um filter element and the regulator where it is regulated to the system operating pressure of 3 4 bar gauge 50lbf in gauge the pre
4. RETURN TO CONTENTS 2 CAST IRON TABLE Several holes are drilled and tapped in the top of the Cast Iron Table Fig 3 1 1 item 1 Eight of these in two groups of four are used in pairs to mount the VSU in either one of two positions relative to the C amp L Table Four are used for fixing the Cast Iron Table to the A V mounts Another four are fitted when necessary with lifting eyes to enable the base to be moved with lifting equipment The circular aperture in the cast iron base acts as a housing for the spindle 1 Magnet and Housing H45 9149 9 Drive Belt B642 21 2 Spring loaded Drive Pin 45 10671 10 DC Motor Gearbox B280 299 3 Drive Block 45 10670 11 Drive Pulley H46 5279 4 Drive Plate 46 7197 12 Drive Body 46 7198 5 Spur Gear D643 73 13 Gear Ring D643 74 6 Encoder K501 1399 14 Bottom Thrust Plate 7 Mounting Plate 46 7196 15 Spindle TR265 K510 1042 8 Driven Pulley 45 10669 Fig 3 1 2 Spindle Drive SPINDLE DRIVE The Spindle Drive Assembly consists of a drive body 12 to which the mounting plate 7 is fixed The mounting plate 7 carries a d c motor gearbox 10 driving a drive pulley 11 mounted on the motor shaft A circular cross section polycord drive belt 9 transmits the drive to a drive plate 4 via the driven pulley 8 The drive plate and driven pulley assembly revolve in a bearing in the drive body 12 The d c motor is powered by an output from the Motor Drive Board K508 925 located in the electronics box The
5. ad screws holding it to the encoder shaft 5 1 10 If it is necessary to remove the three AV mounts B45 8461 undo the four M3 x 6 Socket Cap Screws 3 fixing each of them to the Drive Body D650 3036 5 1 11 Remove the two M3 x 14 Cap Screws D650 30314 and spring washers B671 203 6 from the driven pulley 12 and remove the pulley from the drive plate 2 Withdraw the drive plate and main gear ring assembly 2 from the drive body Note For normal service requirements it should not be necessary to continue further dismantling of the assembly If further dismantling is required refer to GA K510 1037 see Fig 3 1 9 at the end of this section 12 11 1 Spur Gear D643 73 9 Motor Gearbox B280 299 2 Drive Plate 46 7197 10 M4 x 6 Screws D650 3046 and M4 3 M3 x 6 Socket Cap Screws plain washers B680 104 and M4 10 D650 3036 spring washers B671 204 4 Encoder K501 1399 5 Mounting Plate 46 7196 11 M3 x 16 Screws D650 30316 and 6 M83 x 16 Screws D650 30316 and M3 M3 spring washers B671 203 9 spring washers B671 203 12 Drive Pulley H46 5279 7 Drive Belt B642 21 13 Pulley Assembly 8 Terminals for spade connectors on motor wires in cableform K509 1335 Fig 3 1 4 Spindle Drive dismantling Talyrond 265 service manual TH SM 265 i Issu ly 2002
6. ssure being monitored by the air pressure switch 16 The prefiltered and regulated air then passes to the second stage of filtration consisting of a coalescing filter 6 that removes particles of contamination down to 0 03um Finally the fully filtered and regulated air passes to the manifold 7 which feeds air to the spindle air bearing 8 and via a solenoid operated valve 10 to the Spindle clamp 9 For physical layout of the Filter Regulator Manifold Assembly refer to Fig 3 1 5 Inlet on the back of the Panel Fig 3 1 3 Pneumatic System Schematic Sleeve Valve 8 Non Return Valve 1 Filter Regulator Assembly Pressure Gauge Coalescing Filter Manifold Spindle Air Bearing Spindle Clamp 0 Solenoid Valve for Spindle Clamp 1 Electrical Connector Plug 12 Cableform K509 1327 13 Motor Drive Board in electronic box 14 Electrical Connector Plug amp Socket PL26 SK2 14 15 Freche oe Plug 16 Air Pressure Switch a baea ssd 11 13 An air reservoir is available as an optional item In the event of a failure in the air supply it in association with the non return valve 3 ensures that the period of time over which the system air pressure falls is extended This gradual reduction in pressure at the bearing faces prevents metal to metal contact occurring until after the spindle has stopped moving OONOOBRWN Talyrond 265 service manual TH SM 265 Issue 3 July 2002 RETURN TO CONTENTS 5 DISMANTLING Note 5 1 Notes
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