Lathe - Live Tooling - How it Works and Troubleshooting Guide

How it Works

The lathe Live Tooling option uses a servo motor that is mounted to the tool changer assembly to drive a turret mounted tool. The servo motor drive was belt driven[1] for SL lathes and gear driven[2] for ST model lathes.

During a tool change the turret extends out and rotates a live tool holder into position. As the turret clamps the live tool holders drive castle comes into contact with the spring loaded drive castle on the live tooling drive. When commanded to run, the live tooling will rotate at a slow speed for approximately 1 second to properly align the drive castles before it accelerates to the commanded RPM.

Symptom Probable Cause Corrective Action Symptom
Live tooling or Y Axis alarms. Servo motor is contaminated. Inspect the servo motor. 1
The drive castle or tool is not turning. The drive belt is faulty. Inspect the drive belt. 2
Live tooling drive gets hot. The live tooling bearing cap is out of alignment. Align the live tooling. 3
The live tooling bearing is faulty. Examine the bearing. 4
Drive castle does not engage the tool. The drive castle spring is broken. Remove the castle and examine the spring. 5

Drive castle hits the tool holder during a tool change.

The drive castle is coming loose. Tighten the drive castle retaining screw. 6
Noisy Oil level is low (gear drive only). Add oil to the live tooling. 7
The live tooling bearing cap is out of alignment. Align the live tooling. 3
The live tooling bearing is faulty. Examine the bearing. 4
The live tooling gears are faulty (gear drive only). Inspect gearing for damage 8

Section 1

Symptom: Live Tooling or Y Axis alarms.

Probable Cause: Servo motor is contaminated.

Corrective Action:

Examine the outside of the servo motor for contamination or damage.

Remove the servo motor. Make sure the shaft can turn freely.

Go to diy.haascnc.com to troublehshoot the servo motor.

Section 2

Symptom: The drive castle or tool is not turning.

Probable Cause: The drive belt is faulty.

Corrective Action:

Examine the drive belt for contamination or damage.

Make sure the belt has the correct tension.

If the belt is damage, replace the belt.

Section 3

Symptom: Live tooling drive gets hot.

Probable Cause:The live tooling bearing cap is out of alignment.

Corrective Action:

Loosen the (4) screws that hold the bearing cap in position. Do not remove the screws.

Operate the live tooling at a slow speed. This allows the live tooling shaft to return to center.

Tighten the (4) screws.

If the drive continues to run hot, loosen the (8) screws to adjust the live tooling's alignment.

Section 4

Symptom: Live tooling drive gets hot.

Probable Cause: The live tooling bearing is faulty.

Corrective Action:

Remove the bearing cap.

Remove the motor.

Remove the belt cover plate, if the live tool is belt driven. Remove the gearbox cover plate is the live tool is gear driven.

Remove the belt and drive sprocket, if the live tool is belt driven. Otherwise, remove the drive gear.

Examine the bearing [1]. Replace the bearing if it is faulty.

Section 5

Symptom: The drive castle does not engage the tool.

Probable Cause: The drive castle spring is broken.

Corrective Action:

Remove the retainer screw [1], washers [2], driver castle [3], bearing cap [4], locking keys [5], washer [2], and the spring [6] from the drive castle shaft. he drive castle,

Examine the spring for damage or breakage. If the spring is faulty, replace it.

Section 6

Symptom: Drive castle hits the tool holder during a tool change.

Probable Cause: The drive castle is coming loose.

Corrective Action:

Firmly seat the drive castle onto the live-tooling shaft.

Make sure the drive castle retaining screw is tight.

Section 7

Symptom: Noisy.

Probable Cause: Oil level is low (gear drive only).

Corrective Action:

Remove the motor cover [1].

Remove the plug [2] from the oil port.

If oil does not seep out of the port, the oil is low.

Refer to Lubricant, Grease, and Sealant Tables for Haas Machine Components.

Section 8

Symptom: Noisy.

Probable Cause: The live tooling gears are faulty (gear drive only).

Corrective Action:

Remove the motor cover.

Remove the motor.

Open the gearbox case.

Examine the gears. Replace any that are faulty.

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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