4 Requirements Need to Be Met by the Inspection Devices Used on CNC Machines

The position detection device on CNC machines is typically installed on the machine table or screw. This device acts as the equivalent of the dials and operator’s eyes on a conventional machine tool. It continuously and automatically detects the displacement of the table and provides feedback to the control system.

A vast amount of evidence has shown that the machining accuracy and positioning accuracy of a well-designed high-precision CNC machine largely depend on its detection device. As a result, precision testing equipment is crucial in ensuring the quality of high-precision CNC machine tools.

In general, the inspection devices used on CNC machines should possess the following characteristics:

1. Reliability and robustness against interference.

2. Adherence to precision and speed requirements.

3. User-friendly and easy to maintain, suitable for the working environment of machine tools.

4. Cost-effectiveness with a reasonable and attractive price.

Typically, the detection accuracy of a CNC machine tool’s detection device ranges from 0.001 to 0.01mm/m, with a resolution of 0.001 to 0.01mm/m. This level of accuracy can accommodate machine tool tables moving at speeds of 1 to 10m/min.

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