Efficient and precise in-situ dressing method and device for cup-shaped arc grinding wheel

Abstract

The invention discloses a high-efficiency and precise on-site dressing method and device for a cup-shaped arc grinding wheel, which realizes high-efficiency and precise on-site dressing and sharpening of a cup-shaped arc grinding wheel, and integrates a three-axis linkage numerical control machine tool and a single-rotation axis grinding wheel dresser organically. Combined for cup-shaped arc grinding wheel dressing, the X linear axis and Z linear axis of the machine tool are controlled by the machine tool CNC system to perform circular arc envelope interpolation, which can realize efficient and high-precision in-situ dressing of cup-shaped grinding wheels with any wrap angle arc, At the same time, the uniform feed movement of the Y linear axis can be controlled, which can ensure the flatness of the peripheral surface of the plane dressing wheel, avoid the sharp increase of the removal amount when the cup-shaped arc grinding wheel is dressed directly above the plane dressing wheel, and ensure the dressing of the cup-shaped arc grinding wheel precision.

Description

technical field [0001] The invention relates to the technical field of forming and processing of optical elements, in particular to a method and device for high-efficiency and precise in-situ dressing of a cup-shaped arc grinding wheel. Background technique [0002] At present, large-scale optical systems have put forward high requirements on the surface accuracy and surface roughness of large-diameter and high-steep aspheric optical elements. The use of cup-shaped arc grinding wheels and the use of transverse helical processing methods have high processing efficiency and Processing stability, the shape accuracy, dimensional accuracy and surface quality of the grinding wheel, as well as the calculation of the component processing accuracy and processing trajectory will directly affect the component processing surface shape accuracy, surface roughness and sub-surface defects, so the high efficiency, high precision, high Quality trimming becomes even more important. [0003] ...

AI Technical Summary

Problems solved by technology

[0003] For the dressing of grinding wheel, EDM dressing, online electrolytic dressing method and cup tool spherical enveloping dressing method are mostly used, but EDM dressing and online electrolytic dressing method are only suitable for metal base sand dressing, and EDM dressing is mostly offline Dressing, repeated clamping of the grinding wheel will inevitably lead to errors, and the surface quality of the trimmed grinding wheel is poor, it is difficult to control the sub-surface defects of the component processing; it is difficult to control the trimming accuracy by using the online electrolytic trimming method, which is generally used for sharpening; the spherical surface of the cup tool is used The enveloping dressing method can dress any bonded grinding wheel, but the operation is complicated, the rigidity of the dresser is high, and the dressing efficiency is low

The above dressing methods all have the problem that the dressing range is small, and it is difficult to achieve 180° wrap angle arc grinding wheel dressing

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