The inspection of CNC machine tools

- Sep 27, 2019-

The inspection of CNC machining machine tools is the basis for the development of condition monitoring and fault diagnosis, and mainly includes the following contents:


(1) Fixed point First, determine how many maintenance points a CNC machine has, scientifically analyze the equipment, and identify the parts that may be faulty. As long as these maintenance points are "looked at", they will be discovered in time.


(2) Calibration To establish standards for each maintenance point, such as clearance, temperature, pressure, flow, tightness, etc., there must be a clear quantitative standard, as long as it does not exceed the specified standard, it is not a failure.


(3) Check how often on a regular basis, and set an inspection cycle. Some points may be checked several times per shift, and some points may be checked once or several months. It is determined on a case-by-case basis.


(4) Assignment Each maintenance point checks which items are also clearly defined. Each point may check one item or several items.


(5) Who should be inspected by the operator, maintenance personnel or technicians, and should be implemented according to the inspection site and technical accuracy requirements.


(6) Fixed method How to check whether there is a rule, whether it is manual observation or instrument measurement, whether it is a general instrument or a precision instrument.


(7) Inspection The environment and steps to be inspected shall be specified in the production operation or in the shutdown inspection, whether it is disintegration inspection or non-disassembly inspection.


(8) Recording Inspections should be recorded in detail and clearly filled out in the prescribed format. To fill in the inspection data and its difference from the specified standards, judgment impressions, and processing opinions, the inspector should sign and indicate the inspection time.


(9) Processing The intermediate processing and adjustment should be processed and adjusted in time, and the processing results should be recorded in person. If there is no ability or no condition to deal with, it is necessary to promptly report the relevant personnel and arrange for handling. However, any person, at any time, must fill in the processing record.


(10) Analysis Inspection records and processing records should be systematically analyzed periodically to identify weak “maintenance points”, ie, points with high failure rates or large losses, and comments are made to the designer for improved design.