Vibration control method for tool sharpening of grating ruling

Abstract

The invention discloses a vibration control method for tool sharpening of grating ruling. By means of the vibration control method, a cascade control method is adopted for vibration control over the tool sharpening process of grating ruling; a PID (Proportion Integration Differentiation) control algorithm is adopted for an inner ring to control a stepping motor to move a balance weight to move left or right; and grinding loads, exerted on a grinding disc, of a tool are controlled. An automatic search optimization algorithm is adopted for an outer ring to control a linear motor to move up or down, the tool feed amount is controlled, and therefore the vibration of the tool in the sharpening process is controlled. By means of the vibration control method, online real-time control over tool vibration is achieved, and the surface smoothness of a cutting edge of the tool, the quality of the cutting edge of the tool and the sharpening efficiency of the tool are improved.

Description

technical field [0001] The invention relates to a method for controlling the sharpening vibration of a grating marking tool. Background technique [0002] Natural diamond has excellent characteristics such as high hardness, good wear resistance, and low friction factor, and can be sharpened to produce extremely high edge peak sharpness and edge circular profile. Diamond, but the special physical and chemical characteristics of natural diamond, such as brittleness, easy cracking, thermochemical wear and diffusion wear at high temperature, bring certain difficulties to the precision grinding of diamond tools. It can be seen from the mechanism of mechanical sharpening that unreasonable process parameters may cause the tool to remove material mainly by brittle fracture of tiny cracks during the sharpening process, thereby affecting the quality of tool sharpening. The process experience of tool grinding shows that during the grating marking tool grinding process, both the grindi...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem that the tool vibration has a significant impact on the grinding quality during the sharpening process of the grating marking tool. On the basis of in-depth analysis of the vibration mechanism of the tool during the sharpening process, the tool feed rate and the tool direction to the grinding disc are adjusted in real time online. The applied grinding load is used to adjust the vibration of the tool. The tool vibration adopts a cascade control method. The inner ring uses the PID algorithm to control the grinding load applied by the tool to the grinding disc. The outer ring uses an automatic search algorithm to control the feed rate of the tool. The double rings work together to control the vibration of the tool during the sharpening process. This method can realize online real-time control of the tool vibration, greatly reduce the vibration of the tool during the sharpening process, and improve the surface finish of the cutting edge, the quality of the cutting edge and the sharpening efficiency.

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