Umbrella Tool Changer - Set Parameter 257 - Spindle Orientation Offset

Applies to machines built from: 
June, 1997

VMC - Umbrella Tool Changer - Set Parameter 257 - Spindle Orientation Offset

This procedure tells you how to set Parameter 257 (Spindle Orientation Offset) on a machine that has an umbrella tool changer.
Safety Notes
Caution: When you do maintenance or repair on CNC machines and their components, you must always follow basic safety precautions. This decreases the risk of injury and mechanical damage.

Do these steps before you do work in the machine or in the control cabinet:
  • Set the main circuit breaker to the OFF position.
  • Use an approved lock with an approved safety tag. Always follow lock-out procedures in accordance to local government rules.
  • After turning off the machine, wait at least 5 minutes before working in the control cabinet, to allow power to dissipate. Wait for the voltage indicator LED on the vector drive to go off completely.
  • Always turn off the main air supply when you work on any part of the pneumatic system.
  • Make sure to rest the spindle head on a block of wood when work is done on a vertical axis. This will prevent any unintended movement that could result in the axis falling.
  • Never alter any safety circuits on the machine.
You should not do machine repair or service procedures unless you are qualified and knowledgeable about the processes. Serious damage to the machine components can result in costly repairs. The service technicians at your Haas Factory Outlet (HFO) have the training and experience, and are certified to do these tasks safely and correctly. The repair and service work performed by your HFO is protected with a limited warranty.
danger: Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not fully understand. If you have any doubts about doing a procedure contact your Haas Factory Outlet (HFO) and schedule a service visit.

Tools Required

Magnetic Base
Dial Indicator

Step 1

If the machine has a gearbox, operate this code in MDI mode:

M41;

This puts the machine in low gear and makes the spindle easier to turn with your hand.

Make sure no tool is in the spindle. Make sure no tool is in the pocket that faces the spindle.

Step 2

Do these steps to make the spindle dogs as parallel as possible to the X Axis without a dial indicator:

  1. Push ORIENT SPINDLE. Push EMERGENCY STOP.
  2. Push SETTING. Set Setting 7 to OFF.
  3. Push PARAMETER/DIAGNOSTIC. Go to Parameter 257.
  4. Increase the value of Parameter 257 in increments until the spindle dogs are parallel to the x axis after you push ORIENT SPINDLE.
note: If you add 1000 to the value of Parameter 257, this equals approximately 1/4 turn of the spindle orientation location.
  1. Release EMERGECY STOP. Push RESET.
  2. Do these steps again to make the spindle dogs as near to parallel to the X Axis as possible.

Step 3

Put the magnetic base with the indicator on the table.

Handle jog the machine to indicate the alignment of the spindle dogs and the X Axis.

The spindle dogs must be aligned within 0.010" (0.254 mm) of the X Axis.

Do the instructions from STEP 2 again until the spindle dogs align with the X Axis. Make sure the alignment error is not more than 0.010" (0.254 mm) of the X Axis. Increase or decrease the value of Parameter 257 by much smaller increments.

caution: After you change the value of Parameter 257, make sure the indicator is out of the path of the spindle dogs.

Push SETTING. Set Setting 7 to ON.

Step 4

Make sure Parameter 257 is correct. Do these steps:

  1. Put a tool in the spindle.
  2. Go to MDI mode.
  3. Push ATC FWD.
  4. Push ATC REV.

Make sure the machine has a smooth tool change.

Conclusion

If the machine does not does not have a smooth tool change, the machine has (1) of these conditions:

Be aware: Many service and repair procedures should be done only by authorized personnel. The service technicians at your Haas Factory Outlet (HFO) have the training, experience, and are certified to do these tasks safely and correctly. You should not do machine repair or service procedures unless you are qualified and knowledgeable about the processes.

Danger: Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not completely understand. Contact your Haas Factory Outlet (HFO) and schedule a service technician visit if you have any doubts about doing a procedure.

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