Conical surface grinding method

Abstract

A conical surface grinding method belongs to the technical field of conical surface grinding. The conical surface grinding method is characterized in that a rotary operating table drives work pieces to rotate, the end face of a cup-shaped grinding wheel with the narrower end face is used for plunge-cut grinding, and an angle of inclination of the rotation axis of the cup-shaped grinding wheel relative to the rotation axis of the rotary operating table, an included angle between a plane passing the nadir of the pitch-diameter circumference of the grinding operational surface of the cup-shaped grinding wheel and the rotation axis of the cup-shaped grinding wheel and a plane passing the circle center of the pitch-diameter circumference of a grinding acting surface of the cup-shaped grinding wheel and the rotation axis of the rotary operating table, and the distance between the circle center of the pitch-diameter circumference of the grinding operational surface of the cup-shaped grinding wheel and the rotation axis of the rotary operating table are needed to be set according to the inner radius, the outer radius and the radial outline inclination angle of a conical surface to be machined and the pitch diameter of the cup-shaped grinding wheel. The conical surface grinding method has the advantages that high surface precision grinding of an external conical surface can be realized, machining efficiency is high and cost is low.

Description

technical field [0001] The invention belongs to the technical field of conical surface grinding, and relates to the grinding of an outer conical surface, in particular to a grinding method for an outer conical surface with high surface shape precision. Background technique [0002] A conical surface is a relatively common basic surface, which is widely used in mechanical parts, sealing components and optical devices. Known conical surface grinding methods also have deficiencies. For example, when the cylindrical surface of the flat grinding wheel is used on an ordinary cylindrical grinder or a universal cylindrical grinder, or the cylindrical surface of the flat grinding wheel is repaired into a suitable conical surface and the conical surface is processed by the transverse grinding method, it is necessary to make the width of the working surface of the grinding wheel larger than that Grinding the width of the generatrix of the conical surface, since a part of the grinding ...

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Problems solved by technology

When the longitudinal grinding method is used to process the conical surface, the workpiece needs to do rotary motion and longitudinal reciprocating movement to make the working surface of the grinding wheel completely cover the processed surface. Due to the low reciprocating speed of the workpiece, the grinding wheel needs a considerable number of revolutions to completely traverse the workpiece. Once the surface is machined, in addition to the non-uniform wear of the working surface of the grinding wheel affecting the surface shape accuracy, the uniform wear along the radial direction will also affect the surface shape accuracy of the grinding surface

Especially when processing difficult-to-machine materials such as titanium alloy, tungsten carbide, silicon carbide, silicon nitride, and aluminum oxide, the wear of the grinding wheel is more serious. In order to make the grinding possible, it is often necessary to frequently dress the grinding wheel. Frequent dressing of the grinding wheel not only reduces the processing time Efficiency, and speed up grinding wheel wear

[0003] When the longitudinal grinding method is used to process the conical surface, the contact width between the grinding wheel and the workpiece is not constant. The grinding force is not constant during cutting, and the position of the point of action of the grinding force changes with the longitudinal feed movement of the workpiece, which will inevitably cause deformation of the workpiece and the machine tool, and then affect the surface accuracy of the workpiece

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