CNC machining accuracy failure: system parameters change or change, mechanical failure, machine tool electrical parameters have not optimized motor operation abnormalities, abnormalities of the machine tool ring or inadequate control logic. It is a common cause The fault points are processed, and the machine can be returned to normal. During production, there are often failure of the processing accuracy of CNC machine tools. Such failure is strong and difficult to diagnose.
There are five main reasons for such faults:
1. The unit in advancement of machine tools is changed or changed;
2. The zero bias (NULLOFFSET) of each axis of the machine;
3. Axial reverse gap (backlash) abnormal;
4. The motor runs abnormal, that is, the electrical and control part of the failure;
5. Mechanical failure, such as screws, bearing, bearing, and other components.
In addition, the preparation of processing procedures, the selection of tools, and human factors may also lead to abnormal processing accuracy.
Solution:the processing accuracy caused by mechanical failure is abnormal, which mainly should be checked one by one in the following aspects.
1. Check the processing segment of the processing of the machine tool when the machine tool is abnormal, especially the length of the tool length compensation, the processing coordinate system (G54 ～ G59).
2. Under the way of dynamic, repeatedly exercise the Z axis. After the diagnosis of the status of the movement, touch, and listening to the motion state, it is found that Z to the movement sound is abnormal, especially the fast moving, and the noise is more obvious. From this judgment, there may be hidden dangers in machinery.
Asset Precision is a professional manufacturer of customized precision metal parts. The advanced precision processing technology can achieve 0.02C, providing customers with high-precision metal parts.
+8613538580966
