What should I do if the tool of the gantry machining center gets stuck

I. Emergency Response: Safety first, manual escape

Stop immediately ‌ : Press the emergency stop button to cut off the power supply to prevent accidents caused by misoperation.

Protective preparations ‌ : Place soft pads or protective materials on the tooling under the spindle to prevent sudden drops of the tool from damaging the equipment or personnel.

Release the brake and manually rotate the knife arm ‌ :

Locate the braking device on the motor of the tool-changing manipulator and release the brake.

Use an adjustable wrench to rotate the hexagon socket at the tail end of the motor. The rotation direction is usually the same as the clamping direction, gradually disengaging the knife arm from the main shaft.

If there is a cutting tool on the main shaft and you hear a leakage sound, it indicates that the tool is in a loose state. At this time, the tool may fall off. Be sure to pay attention to protection.

Ⅱ. Reset Operation: Restore the original position of the knife arm

Keep rotating the tool arm until a complete tool change action is completed.

Observe the three red indicator lights on the tool magazine panel. When the middle light is on, it indicates that the tool arm has returned to the original position.

After resetting, move the motor braking device back to its original position to ensure normal automatic tool changing next time.

Ⅲ. System Check: Avoid the phenomenon of "random knives"

Tool jamming may cause the tool numbers to be disordered (commonly known as "random tools"). The following checks are required:

Enter the tool list interface of the numerical control system and check if there are any duplicate tool numbers.

Confirm whether the tool number inside the tool holder is consistent with the tool number in the processing program;

If there are any errors, they can be corrected by manually adjusting the tool position or modifying the tool number in the parameter interface.

Ⅳ. investigate the root cause and prevent recurrence

Frequent knife jamming is often a sign of deep-seated problems. It is recommended to investigate the following common causes:

Inaccurate spindle orientation Angle ‌ : collision or damage to the synchronous belt may cause orientation deviation, affecting tool change alignment;

Abnormal position of the tool change origin ‌ : operational errors or mechanical offset can lead to inaccurate tool change points, causing tool jamming.

Insufficient air supply or malfunction of the tool release mechanism ‌ : damage to the tool release solenoid valve, pull claw, spring plate or insufficient air pressure can all lead to the inability to release the tool normally.

Iron chip accumulation or excessive torque ‌ : Iron chips getting stuck in the tool arm during processing or excessive cutting load may also cause tool jamming.

The tool holder does not meet the specifications or the conical surface is contaminated ‌ : the size of the tool holder does not match, there is oil stain or residual cutting fluid in the conical hole, which is prone to vacuum adsorption and increases the risk of tool jamming.

Daily maintenance suggestions

Clean the spindle taper hole and tool holder every day.

Regularly check the force of the claw spring. If it decays by more than 15%, replace it in time.

Every month, use dedicated bar stock to inspect the contact area of the conical surface to ensure the fit accuracy.