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CNC Repair Procedure: How to Disassemble the Turret Clamp/ Unclamp Piston on a Fuji HM-30 CNC Milling Machine (Alarm 1002 Turret Clamp/ Unclamp Time Over) Posted on May 2, 2011 by pinpoint1 BUILDER: FUJI MODEL: HM-30 CONTROL: FANUC 21iM TITLE: TURRET INDEX TIME OVER ALARM. TURRET NOT FULLY UNCLAMPING. SUMMARY: CORROSION IN THE BORE FOR THE TURRET UNCLAMP PISTON PREVENTED FULL UNCLAMPING. CLAMPING CYLINER NEEDED TO BE REMOVED. ALARMS: 1002 DETAILS: 1. Index turret to station 1 and make sure it’s clamped. If the motor will not rotate the turret, you can look at the tool-driver to make sure you are in the correct location. The friver should be centered on the hole at the turret station at the 9 o’clock position. You can then use the solenoid valve to clamp.

How to Disassemble the Turret Clamp Unclamp

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Page 1: How to Disassemble the Turret Clamp Unclamp

CNC Repair Procedure: How to Disassemble the Turret Clamp/ Unclamp Piston on a Fuji HM-30 CNC Milling Machine (Alarm 1002 Turret Clamp/ Unclamp Time Over)Posted on May 2, 2011 by pinpoint1

BUILDER: FUJI

MODEL: HM-30

CONTROL: FANUC 21iM

TITLE: TURRET INDEX TIME OVER ALARM. TURRET NOT FULLY UNCLAMPING.

SUMMARY: CORROSION IN THE BORE FOR THE TURRET UNCLAMP PISTON

PREVENTED FULL UNCLAMPING. CLAMPING CYLINER NEEDED TO BE REMOVED.

ALARMS: 1002

DETAILS:

1. Index turret to station 1 and make sure it’s clamped. If the motor will not rotate the

turret, you can look at the tool-driver to make sure you are in the correct location. The

friver should be centered on the hole at the turret station at the 9 o’clock position. You

can then use the solenoid valve to clamp.

Page 3: How to Disassemble the Turret Clamp Unclamp

4. Disconnect the coolant pump at connector 1M2 at the rear of the machine.

5. Remove the split-ring guard on the turret. It makes it easier to handle when the turret

comes off.

6. Remove the outer bolt pattern (M10 screws) that hold the turret on. Remove the

eccentric pin prior to taking the turret off.

Page 5: How to Disassemble the Turret Clamp Unclamp

8. Remove the (2) M6 screws holding the clamp/unclamp proximity switches. Mark the

bracket mounting location. Remove the (2) M8 screws holding the electrical connection

box in place. You will need to move this out of the way.

9. Remove the (4) hex bolts that mount the turret-index motor. Set the motor and the box

down inside the back area.

Page 7: How to Disassemble the Turret Clamp Unclamp

11. Loosen the (3) set-screws and then remove the KMT nut from the back of the shaft.

Remove the switch dog. Suggestion: take and record several measurements to make sure

you get everything back the way it was to begin with when you re-assemble.

12. Loosen the M8 screws in the face of the Mecha-lock. Remove the Mecha-lock from the

bore in the gear.

Page 9: How to Disassemble the Turret Clamp Unclamp

14. Remove the M8 screws from the back cover. Be careful not to lose the small lock

washers on the screws. The cover must be pulled straight back as there are (2) pins in the

bottom edge. Take off the large gear.

15. Remove the front disk and shaft from the front side. This will expose the machine-side

coupling and the front end of the piston. Set it carefully on the floor. Watch that you catch

the bearings on the back as the shaft comes out.

Page 10: How to Disassemble the Turret Clamp Unclamp

16. Remove the M8 screws that hold on the back cylinder flange. You can put a small

screw in one of the tapped holes and gently pry the flange out of the bore.

Page 12: How to Disassemble the Turret Clamp Unclamp

17. The piston can now be removed. It will probably be necessary to hammer it out. Care

must be taken to avoid damaging the piston or the cylinder bore. A tool can be made from

scrap round-stock for this purpose.

Page 13: How to Disassemble the Turret Clamp Unclamp

Check out www.fanucmanual.com for our CNC troubleshooting book

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