Analysis of the causes of abnormal machining accuracy faults in external cylindrical grinding machines.
1、 The reason for the abnormal machining accuracy of the external cylindrical grinder.
1. The feed unit of the machine tool has been altered or changed.
2. The zero offset of each axis of the machine tool is abnormal.
3. The axial reverse clearance is abnormal.
4. Abnormal operation of the motor, that is, abnormal electrical and control parts.
5. Mechanical issues, such as screws, bearings, couplings, and other components.
2、 Diagnostic criteria for problems with cylindrical grinding machines.
1. The external first and then internal cylindrical grinder is a machine tool that integrates mechanical, hydraulic, and electrical components, so the occurrence of its problems will also be reflected by these three factors. Repair personnel should first conduct a thorough inspection from the outside to the inside, and try not to open the seal or dismantle it randomly, otherwise it will expand the problem, cause the machine tool to lose accuracy, and reduce functionality.
2. Mechanical first, electrical later.
3. Static first, then move. In the event of a power outage on the machine tool, after understanding, investigating, testing, and analyzing, it is confirmed that there is a non-destructive problem before the machine tool can be powered on; Conduct dynamic investigation, inspection, and testing under operating conditions to identify the cause.
4. When multiple problems are presented and intertwined, and there is no way to start at the moment, the simple problems should be dealt with first, followed by the more difficult ones.
3、 Diagnosis method for problems with external cylindrical grinding machines.
1. Intuitive method.
2. Parameter viewing method.
3. Isolation law.