7.3 SMTC - Double Arm - Alignment - VMC

The following service video shows you how to align a side mount tool changer.

Note: This service video is for reference only and does not replace the written procedure.

Verify the double arm length

Check that the replacement double arm [2] is the correct length, measure from the center to center of the tool holder flange between the original [1] and replacement double arm [2].

NOTE: The same verification steps will apply to machined [1] and casted [2] double arm replacements.Some machines may still received machined [1] double arm replacements.

Verify that the double arm is the correct taper size and type

To differentiate between the BT, CT, and HSK verify that the BT V-flange is as shown in image [1] and the CT V-flange is as shown in image [2], and the HSK V-flange is as shown in image [3].

Verify that the double arm has the correct key slot offset

Now the casted double arm will have the key slot machined in a 0 degree angle position [1] or at a 2.5 degree angled position [2], both double arms will use only a straight key instead of an offset key.

Make sure that the taper lock [4] is sufficiently tight to prevent the double arm from falling off the shaft, but loose enough to rotate the double arm on the shaft.

Classic Haas Control (CHC)

1. Go into DEBUG mode. Go into RECOVERY mode. Select the MANUAL TOOL CHANGER OPERATION mode.

Next Generation Control (NGC)

1. Insert the Haas Control Key. If necessary cycle power.
2. Go into RECOVERY mode. Select the MANUAL TOOL CHANGER OPERATION mode.

Push [ATC FWD] until ARM at CL/UNCL has a value of 1. Manually rotate the double arm [3] on the cambox output shaft to be parallel with the Y Axis.

Push [EMERGENCY STOP]. Clear alarms.

Put a tool holder [2] with no cutter into the pocket [1].

Manually turn the double arm [2] on the shaft so the slide [4] slightly touches the tool holder [1].

Use a caliper [3] to measure the height between the bottom of the V Flange and the double arm.

Manually turn the double arm on the shaft so the arm engages the tool holder.

Use a caliper to measure the height between the bottom of the V Flange and the double arm.

If the measurement is different, then adjust the height of the arm and repeat this step. Use the T-2108 tool to adjust the double arm height. When the measurement is the same, record the measurement.

Manually turn the double arm until you can remove the tool holder.

Put the bottom part [1] of an alignment split tool into the arm [4] near the pocket. Install the top part [2] of an alignment split tool into the pocket [3].

Align the split tools.

Put the pin [5] for the alignment split tool into the top and bottom parts to perform an alignment check.

Remove the pin.

Lightly tighten the clamp screws 1/4 turn. Tighten the screws [1] in a star pattern. Perform an alignment check [2] each time you tighten all the screws. Repeat this process until the screws tightly hold the double arm.

Remove the T-2108 tool [3].

Torque the screws in the star pattern to the correct ft-lbs below.

 Note: You must repeat this action a number of times to make sure the screws are torqued to the correct ft-lbs.

• 8-Screw Double-Arm - 15 ft-lb (20 Nm)
• 6-Screw Double-Arm - 20 ft-lb (28 Nm)

Push [ATC REV] until you can safely remove the tool from the pocket.

Push [EMERGENCY STOP]. Clear alarms.

Remove both parts of the alignment split tool.

After all of the screws are torqued verify the double arm height alignment in Step 2.

Release the [EMERGENCY STOP].