VMC - 30/40-Taper - Inline - TRP Single Sensor - Adjustment

Applies to machines built from: 
January, 1989

VMC - 30/40 -Taper - Inline - TRP Single Sensor - Adjustment - Introduction

This procedure tells you how to do these adjustments:

  1. drawbar height
  2. proximity sensor position for the engaged (clamped) drawbar.

 

Machine Compatibility

Do this procedure on a vertical mill with these components:
  • inline drive
  • 30- or 40-taper spindle
  • a single-sensor tool release piston (TRP)
  • an adjustable TRP proximity sensor

Tools Required

PRESSURE GAUGE SERVICE KIT (P/NĀ 93-2621)

VMC - 20/30/40-Taper - Drawbar Height - Check

Step 1

Jog the X Axis and the Y Axis until the spindle is in the middle of the table.

Put a toolholder with no tool into the spindle. Put a piece of paper on the table to protect the table. Put the aluminum block on the piece of paper.
Jog the Z Axis in the negative (-) direction.
Do this until the toolholder is approximately 0.30" (8 mm) from the top of the block.

Step 2

Push .001/1.

Jog the Z Axis in the negative (-) direction one increment at a time. Jog until the toolholder lightly touches the block.
The block can move in the X and Y axes, but not in the Z Axis.
caution: Do not push the tool-release button. This causes a Z-Axis overload.

Step 3

Push .001/1.

Jog the Z Axis in the negative (-) direction 0.002ā€ (0.05 mm).
The block is tight.
Push POSIT to show the Position display. Push MDI and then HAND JOG to change the position display to zero.
Jog the Z Axis in the positive (+) direction 0.100" (2.54 mm) above the block.
Push and hold the tool-release button. With moderate force, try to move the aluminum block. If the drawbar height is correct, the block does not move at 0.100.

If the block moves, go to Step 4. If the block does not move, go to Step 5.

Step 4

Do this step if the block moved in Step 3.

Push MDI and then HAND JOG. Push .01/10.
Jog the Z Axis in the negative (-) direction 0.01ā€ (0.254 mm), one increment.
Push and hold the tool-release button.
Try to move the aluminum block. If the block moves, jog the Z Axis one increment at a time until the block cannot move. Record the number of increments you must move the spindle. The number of increments is the number of shims to add.

Step 5

Do this step if the block did not move in Step 3.

Push .01/10.
Jog the Z Axis in the positive (+) direction 0.01ā€ (0.254 mm), one increment.
Push and hold the tool-release button.
Try to move the aluminum block. If the block does not move, jog the Z Axis one increment at a time until the block moves. Record the number of increments you must move the spindle. The number of increments is the number of shims to remove.

VMC - 30/40-Taper - Inline - TRP - Add or Remove Shims

Step 1

Jog these axes:

  • Z Axis to the bottom end of travel
  • X Axis to the center of travel
  • Y Axis to the front of the machine

Push EMERGENCY STOP.

You must stand on the mill table to get access to components. Clean the table fully. Put a piece of protective material that does not move on the table.

Remove the front spindle head cover.

Step 2

ADD OR REMOVE SHIMS

Loosen the (4) screws [1] for the striker plate. Use the openings in the spindle head casting.

Add or remove the correct number of shims [2].

note: The correct number of shims is the number of increments you moved the spindle until the block did not move, in the steps before.

Step 3

Make sure the inner corner [1] in the shims is fully against the striker plate.

Tighten the striker plate screws [2].

Do this section again: VMC - 20/30/40-Taper- TRP - Proximity Sensor - Adjustment.

When the drawbar height is correct, tighten the screws again.

VMC - 20/30/40-Taper - TRP - TSC - Pre-charge - Adjustment

This procedure tells you how to do these tasks:
  • Assemble the pressure gauge service kit.
  • Use the pressure kit to adjust the TRP pre-charge.
note: Do not do this procedure if the machine does not have through-spindle coolant. The location of the pre-charge solenoid may vary.

Step 1

Do these steps to make a pressure-gauge assembly:
  • Attach the gauge [1] to the tee-fitting [3].
  • Attach the (2) quick-release fittings [2] to the tee-fitting.
  • Put the 1/4" tubing [4] into one of the quick-release fittings [2].

Step 2

Disconnect the tube [1] from the output-side of the pre-charge pressure regulator [4].

Put the tube into the top of the pressure-gauge assembly [2].

Connect the 1/4" tube [3] from the pressure-gauge assembly to the regulator.

Step 3

On some machines, you cannot adjust the regulator. Use the pressure-gauge assembly to make sure the regulator operates correctly. Do these steps to make sure the regulator [2] operates correctly:

Adjustable regulator:

Push and hold the button on the pre-charge solenoid valve [1]. Do this for 20 seconds.

Pull the regulator adjustment knob to unlock it. Set the air pressure to 30 psi (2.1 bar). Release the solenoid button. Push and hold the button on the solenoid valve [1], again. Do this for 20 seconds.

Make sure the gauge shows 30 psi (2.1 bar). Release the solenoid button. Push the regulator adjustment knob to lock it.

Non-adjustable regulator:

Push and hold the button on the pre-charge solenoid valve [1]. Do this for 20 seconds.

Make sure the gauge shows 30 psi (2.1 bar). If the gauge does not shows 30 psi (2.1 bar), the regulator is defective. Replace the regulator.

Both: Remove the pressure-gauge assembly from the regulator.

VMC - 30/40-Taper - Inline - TRP Single Sensor - Adjustment

Step 1

Clear the EMERGENCY STOP. Push RESET for each alarm.
Push PARAM/DGNOS (2) times.

Push the RIGHT CURSOR arrow to go to the I/O tab.

Make sure that Draw Bar Open = 0.

Step 2

Find the nut to adjust the height of the proximity sensor. Use a wrench to turn the nut.

Turn the nut until the light on the sensor goes off. Turn the nut 1/2 of a turn in the same direction.

Push the tool release button (2) or more times.

Make sure that the light on the sensor goes off each time you push the button.

Step 3

Push PARAM/DGNOS.
Push the RIGHT CURSOR arrow until the I/O tab shows.

Make sure Draw Bar Open = 0.

Jog the Z Axis in the negative (-) direction 0.01" (0.254 mm) to 0.05" (1.270 mm) from the block.
Push and hold the tool release button.

Make sure that Draw Bar Open stays 0. If Draw Bar Open does not stay 0, the adjustment is not correct. Do Steps 2 and 3 again.

Jog the Z Axis in the negative (-) direction 0.01" (0.254 mm) to 0.06" (1.524 mm) from the block.

Push and hold the tool release button.

Make sure that Draw Bar Open changes to 1. If Draw Bar Open does not change to 1, the adjustment is not correct. Do Steps 2 and 3 again.

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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