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Pragati BTP-50, Instruction Manual

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Pragati BTP-50 Instruction Manual Download Page 18

BI-DIRECTIONAL TOOL TURRET

18

6.2  Replacement  of  the proximity switch

*

Bring the turret to clamped position by hand cranking.

*

Take out Proximity switch assembly.

*

Measure distance 'a' and note it down for reference.

*

Replace switch, and maintain distance 'a'.

*

It is important to maintain the gap of 0.8 mm to 1 mm as shown in the figure; Detail X. If necessary

adjust 'a' to get the desired gap.

*

replace the 'O' Ring(114) back in position.

*

Place the switch assembly back in position . Hand crank the Turret( ref page 15) and     check    the

  function of the switch. Switch LED should light up during clamped position of turret.

Fig 6.2a

X

X

X

X

X

115

112

114

LED

113

     24.5mm

GAP
0.8mm

Detail  X

Proximity switch assembly

Fig 6.2b

118

115

59

01

IMB50052014

Summary of Contents for BTP-50

Page 1: ...INSTRUCTION MANUAL B T P 50 BI DIRECTIONAL TOOL TURRET IMB50052014 ...

Page 2: ......

Page 3: ...trical signal diagram 4 2 Flow chart 4 3 Requirements 4 TURRET CONTROL 12 5 MAINTENANCE 15 5 1 n o i t a c i r b u L 1 5 12 26 9 1 Spare parts 13 14 5 1 g n i k n a r c d n a h 2 5 6 1 p m a l c r e d e f g n i R f o t n e m t s u j d A 3 5 6 REPLACING COMPONENTS 17 7 1 r e d o c n e y r a t o R f o t n e m e c a l p e R 1 6 8 1 h c t i w s y t i m i x o r P f o t n e m e c a l p e R 2 6 6 3 Repla...

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Page 5: ...f turret depends on the mounting position Front or Rear If not specified Rear mounting is standard 1 2 Model Identification Model Fig 1 1 Ordering sample BTP 50 Turret 8 Station Rear mounting 415V 3 Ph motor BTP 50 8 R 415 NO of stations 8 stations 8 12 stations 12 Mounting F Front R Rear DefaultValues No Of stations 8 Mounting position R MotorVoltage 415 Frequency 50 60Hz BTP Size 50 Motor voltag...

Page 6: ...rols clamping and release of the 3 piece coupling One revolution of cam shaft completes one indexing cycle of de clamping indexing clamping Absolute Position encoder gives feedback of the turret position Proximity switch checks the clamped position of the turret Three Piece face gear coupling allows the tool disc to be indexed without lifting It also ensures high repeat positioning accuracy and ri...

Page 7: ...3xR 400 160 350 F2xR F1 F2 F3 R 2 3 Techinical and Dimensional details Fig 2 1 Fig 2 2 6 7 22 15 35 107 266 60 22 15 128 64 64 15 Ø15g6 Ø140 109 110 Ø140 Ø85 7 18 50 170 Ø120 Ø70 0 1 Ø25h5 Ø25H6 h5 REFER DETAIL C O RING COOLANT RING COOLANT FLANGE DETAIL C Technical Specfications Model BTP 50 Centre Height m sec 8 0 35 12 2 6 18 0 25 2 kg m kg 1 min sec sec m 50 No of index position Interia of Tra...

Page 8: ... seating surface square to the lathe axis Clamping bolts should use machine washers of extra thick ness min 5 mm to ensure proper clamping Dowel Pins are not recommended for ensuring the alignment of turret It is preferable to allow the turret to slip in the event of an accidental shock or overload This slipping absorbs some of the energy of the shock and reduces the possible damage Turret can aga...

Page 9: ...e part of contact area Tool disc is to be fitted on the indexing flange with the help of clamping bolts and machine washers Disc should be angularly adjusted within the clearance of the bolt holes to get the correct centre height of the tool It should then be firmly clamped by tightening the bolts 0 005 100 Fig 3 2 flat IMB50052014 0 005 100 Turret Mounting M6X35 8No s Base Fig 3 3 Bolt Size M6X35...

Page 10: ...lternative frequency Phase 3 C A V 0 2 2 D N A 0 8 3 5 1 4 z H 0 6 D N A z H 0 5 Motor short circuit power 0 9 kVA m m 5 7 0 2 Thermal switch 415V AC 2A 0 1 1 Normally closed contact m m 2 0 3 Absolute encoder DC Ripple 10 V 0 3 5 1 DC Ripple 10 V 0 3 0 1 Supply A m 0 5 3 Channel Load A m 0 5 Output PNP Output PNP No m m 2 0 4 Proximity switch Turret clamp Signal Load A m 0 0 2 m m 2 0 R phase Y p...

Page 11: ...ay 110 C Normally closed 415V AC 2A SSR 415VAC 25A Fig 3 5 The figure shows recommended wiring diagram Turret Please note that only 3 phase motor with thermal relay is part of Turret supply 1 Solid state relays are required to switch off the motor in shortest possible time 2 Thermal relay should directly switch off the motor IMB50052014 Use fuse rating about three times motor Current minimum 6a fu...

Page 12: ...erwise the turret will get de clamped and the Turret clamp signal will be lost Following measures are suggested for stopping the motor in minimum possible time a Control should be capable of detecting the Turret clamp signal within 3 to 6 ms b Solid state relays should be incorporated in the motor circuit to ensure fastest possible disconnection Regular contactors can be used for motor direction s...

Page 13: ...ES YES YES YES YES YES YES YES START TORQUE MOTOR CW START TORQUE MOTOR CCW YES TURRET CLAMP SWITCH ON NO NO NO NO NO NO NO Y X N 2 X Y N 2 X Y D D B B TURRET CLAMP SWITCH OFF N NUMBER OF INDEX POSITION 8 12 24 START POSITION X POSITION Y DEMAND DEMAND ALARM INVALID TOOL DEMAND VALID 1 Y N E E A A START 4 SEC TIMER T4 X Y X Y X Y E E ALARM Note Monitor turret clamp switch signal on continuous basi...

Page 14: ...vements Simultaneously Turret not Clamped alarm signal should also be generated D Position Fault signal At the end of indexing cycle a check should be made to ensure that the turret has indexed to the demanded position If the actual position and demanded position do not match then Position fault alarm should be generated E Invalid Demand signal An eight position turret cannot react to a tool deman...

Page 15: ... the rotor of electric motor by hand Hand cranking is required for inspecting the setting of encoder proximity switch and clamping function of disc springs If turret is hand cranked through one indexing cycle the extra pressure can be felt during the clamping phase Procedure for hand cranking is as follows 1 Switch off power supply to the motor 2 Remove Back cover Hexagon head A F 10 of motor shaf...

Page 16: ... and mounting flange 05 Bring the turret to the clamped position by hand cranking bolts 65 in line with the holes drilled in flange 10 In case of a 8 station turret you may have to crank through one or two stations to get the alignment Use suitable Allen key and loosen all bolts Slightly tap the bolt heads to release Grip Crank the turret by hand and bring the turret in declamped position Fit the ...

Page 17: ...dle and Position the Encoder on the Encoder mounting flange 05 Fig 6 1c 4 Match the Encoder marks on its periphery with the marks of flange 02 on its face detail C 5 Clamp the Encoder in this position using Clamps and screws 03 04 03 04 02 68 05 69 Fig 6 1a Detail C Alignment of encoder with flange Groove on encoder mounting Groove on periphery of encoder Alignment of Groove on face of encoder sha...

Page 18: ...tant to maintain the gap of 0 8 mm to 1 mm as shown in the figure Detail X If necessary adjust a to get the desired gap replace the O Ring 114 back in position Place the switch assembly back in position Hand crank the Turret ref page 15 and check the function of the switch Switch LED should light up during clamped position of turret Fig 6 2a X X X X X 115 112 114 LED 113 24 5mm GAP 0 8mm Detail X ...

Page 19: ...ng Coolant Poppet 44 rubs against coolant ring during indexing and is liable to wear Provision has been to made replace the button without removing the Tool disc from the turret For replacement Loosen clamps 110 and move coolant ring to align the reference marks in line with the corresponding mark on the body as shown in fig fig 6 3f Remove the Grub 47 Use M4x6 screw for removing the poppet Assemb...

Page 20: ...0 ASSEMBLY DRAWINGS With back cover and motor removed Actual orientation of axes is visible in this view Fig 7 2 Fig 7 1 OVER ALL ASSEMBLY 121 120 125 116 86 83 115 118 113 IMB50052014 Fig 7 1b Fig 7 1a 111 110 101 108 109 99 100 117 ...

Page 21: ...7 3 MAIN SPINDLE ASSEMBLY IMB50052014 28 30 29 31 33 35 37 39 41 43 32 34 36 38 40 44 42 04 01 02 03 08 07 06 05 12 09 10 11 16 13 14 15 20 17 18 19 24 25 26 27 21 22 65 66 67 61 62 63 64 57 58 59 53 54 48 47 46 52 51 50 45 49 68 69 70 ...

Page 22: ... Fig 7 5 b IMB50052014 7 5 COOLANT VALVE ASSEMBLY Fig 7 5 a Fig 7 4 7 4 INDEXING DRIVE 83 82 81 85 94 84 80 95 91 90 93 92 89 88 86 87 26 98 27 44 48 43 49 47 71 72 74 75 55 73 76 77 82 81 77 84 76 Fig 8 0 7 6 DRIVE SHAFT ASSEMBLY ...

Page 23: ... INSTRUCTIONS FOR ASSEMBLY 1 Prepare the following assemblies 1 Drum cam Assembly 2 Indexing Gear Assembly 3 Cam shaft Assembly 4 Follower shaft Assembly Fig 9 1 Fig 9 2 Fig 9 3 38 35 39 20 21 19 18 57 58 64 65 13 75 94 85 72 73 74 95 92 93 89 71 88 91 ...

Page 24: ...ientation marks on Fixed coupling 50 and Sliding coupling 39 3 Also align Orientation marks on Cam gear 18 and sliding coupling 39 4 Place components 17 16 15 in position 5 Use indexing gear with pinion tighten nut 14 till it buts against the shaft shoulder 6 Spindle sub assembly Fig 9 4a Fig 9 4b Fig 9 4d 14 13 64 15 16 17 Drum cam subassembly 54 32 33 34 50 Plate IMB50052014 Fig 9 4c 45 97 44 46...

Page 25: ...earing Star Screw M3 1 Spacer Ring Feder Soc HD Screw M5 Ring Feder 2Set 2 2 1 O Ring End Plate 1 External Circlip Ø12 Drain Plug 1 2 Bsp 1 O Ring End Plate Soc HD Screw M6 1 8 1 Oil Seal 1 Key Spindle 1 Drive Dog Grub Screw M4 1 1 1 Key Indexing Shaft 1 Parallel Indexing Cam Cam Shaft Bearing HK1012 4 1 Key Cam Shaft 2 Deep Groove Ball Bearing Name Plate 6 6 1 1 1 1 Drive Shaft Gear No PART NAME ...

Page 26: ...ar 1 0 6 0 7 0 B C i t a g a r P 1 5 Cam Follower Roller Assembly Cam Follower Roller Assembly With Pin Track Roller Assembly Track Roller Assembly With Pin Track Roller Pin 6 91 0 7 0 B S i t a g a r P 8 6 2 91 1 7 0 B S i t a g a r P i t a g a r P 8 7 21 SB0710 3 8 3 21 0 6 0 7 0 B C i t a g a r P 3 9 10 7 0 B S i t a g a r P 3 S E R A P S B P U O R G Oil Seal 66 08 15X30X7 F S F Z o k a V 15X30...

Page 27: ...Remove encoder 02 and mounting Block 05 Remove Drive shaft gear Lock Nut 82 Remove end plate with puller 11 Remove proximity 112 with clamp 113 Remove circlip 85 and proximity sensing gear 94 Remove end spacer 07 and key on the spindle Loosen clamping screws 65 of friction ring coupling and pull out the indexing gear 13 Shafts II III IV can now be pulled out If necessary use threaded holes at the ...

Page 28: ... on gear 18 and Cam 74 Should be positioned as shown in figure10 5 Fit These subassemblies in the mainbody without loosing their general orientation Simultaneously it is neces sary to ensure that drive gear 74 and cam gear 18 mesh with orientation marks properly aligned IMB50052014 3 Intermediate assembly Fig 10 2 Fig 10 1 Partial assembly of indexing Partial assembly of spindle Orientation marks ...

Page 29: ...try into their seats located in back plate Clamp back plate to body with the help of bolts 116 and cylindrical pins 117 Now tighten bolts 65 to clamp indexing gear 13 onto the spindle Bolts are ap proachable through holes in bearing flange 64 Bolts should be tightened in diagonal order and in 3 or 4 stages Fit thrust bearing ring 64 and Circlip 06 on the spindle Fit bearing covers 78 87 77 and fit...

Page 30: ...ve action Corrective action 1 Turret remains unlocked at end of indexing cycle complete signal not available even through the motor has stopped Tool disc goes on rotating without stopping at selected location A Turret motor not stopping at specified time 1 A Faulty SSR 1 A Change SSR 2 A Problem with turret control 2 A Check whether motor power switches OFF with in 5ms of prox switch signal oscill...

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Page 32: ...re 560 058 INDIA PH 091 80 2836 1543 1544 FAX 91 80 28361549 http www Pragati automation com email info pragati automation com OUR PRODUCTS Automatic Tool Changers Bi Directional Tool Turrets Servo Tool Turrets Driven Tool Turrets Tool Discs Tool Holders Power Chucking Cylinders and Copy Turning Attachments ...

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