Detection device and detection method for precise light-seeing machining of workpieces by CNC machine tools

Abstract

The invention provides a detection device and a detection method for a precise polishing machined workpiece of a numerically-controlled machine tool. The detection device comprises a detection control loop which is connected with a tool of the numerically-controlled machine tool through a lead wire, wherein the detection control loop comprises a noise reduction circuit, an input end of the noise reduction circuit is connected with the tool, an output end of the noise reduction circuit is connected with a signal amplifying circuit, the signal amplifying circuit is connected with a signal conversion circuit, the signal conversion circuit is connected with a comparison circuit, a signal criterion is connected with the comparison circuit, an output of the comparison circuit is connected with a driving circuit, the driving circuit is connected with an output circuit of the detection control loop, and the output circuit is connected with a servo control system used for controlling the tool of the numerically-controlled machine tool through a lead wire. The detection device and the detection method can increase the qualified rate of products subjected to workpiece surface oxidation treatment to 99.8%, is economical and reliable, has wide application range, and has great application value.

Description

technical field [0001] The invention belongs to the technical field of CNC machine tool manufacturing, and in particular relates to a detection device and a detection method for precise light-processing workpieces of a CNC machine tool. Background technique [0002] When the CNC machine tool performs visible processing on the workpiece, it needs to process the surface oxide of the workpiece, and the CNC machine tool belongs to batch automatic unattended processing. Processing can easily cause uneven processing surfaces of workpieces, resulting in the same ratio between unprocessed, over-processed workpieces and processed workpieces, and the average pass rate of workpieces is only 33%. If all over-size processing is selected, although the oxide layer can be fully exposed to light, the overall size of the workpiece will be affected, especially for magnetic materials, which will greatly reduce the performance of the product. The existing solution is to equip the tool setting i...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a detection device and detection method for CNC machine tools to accurately process workpieces by light. By adding a detection control circuit for the oxide layer on the surface of the workpiece to the tool, the conductivity of metal oxides is compared with that of pure metals. The principle of poor performance realizes the turn-on and turn-off of the control loop, and solves the technical problem of low product qualification rate when the CNC machine tool sees the oxide on the surface of the workpiece under the existing technology.

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