Unveiling the Spindle Release Tool Command

I. Basic Principle of Spindle Loosening Tool

Spindle loosening of the tool is a key action in the tool changing process of a CNC machine tool, which is accomplished by releasing the tool clamping mechanism. Different machine tool systems may use different instructions, but the principles are similar:

Hydraulic/pneumatic tool release: The tool release mechanism is driven by a pressure medium

Mechanical loosening knife: Utilizing CAM or lever mechanisms to release clamping

Electromagnetic loosening knife: It controls the opening and closing of the gripper by electromagnetic force

Ii. A Comprehensive List of Common Knife Loosening Commands

The tool release instructions of mainstream numerical control systems each have their own characteristics:

Fanuc System: M11 (Loose knife) /M10 (Tight Knife)

Siemens System: M65 (Loose tool) /M66 (Tight tool)

Mitsubishi System: G143 (Songdao Mode)

Domestic systems: Commonly, the T instruction is used in conjunction with the M code

Iii. Precautions for Operation

Special attention should be paid to the correct use of the knife release command:

Make sure the spindle has completely stopped before performing the tool release

Check whether the air pressure/oil pressure has reached the set value

Regularly maintain the clamping mechanism to prevent jamming

In an emergency, a manual knife release device can be used