Efficient abrasive belt grinding special grinding apparatus for high surface integrity machining

Abstract

The present invention provides an efficient abrasive belt grinding special grinding apparatus for high surface integrity machining. The efficient abrasive belt grinding special grinding apparatus comprises polishing blocks; a fixing device for fixing the polishing blocks to a grinding machine; abrasive belt fixing devices disposed at an inner side wall of an installing cavity and outer side wallsof the polishing blocks and used for fixing an abrasive belt; and radial compressing assemblies for compressing the abrasive belt to the outer periphery of a to-be-machined workpiece and capable of moving in a radial direction of the installing cavity. According to the abrasive belt grinding special grinding apparatus, a winding mode is adopted, the abrasive belt is fixed to the outer periphery ofthe to-be-machined workpiece by the abrasive belt fixing devices installed at the inner side wall of the installing cavity and the outer side walls of the polishing blocks, and the abrasive belt canbe effectively prevented from falling off; machining requirements of the workpieces having different diameters are satisfied by adjusting radial positions of the radial compressing assemblies; and different positions of the to-be-machined workpiece are simultaneously ground and polished by the plurality of radial compressing assemblies, and machining efficiency of the workpiece can be higher. Thegrinding apparatus is simple in structure, high in machining efficiency and good in mechanical property, and the abrasive belt is fixed firmly.

Description

technical field [0001] The invention relates to the technical field of abrasive belt grinding, and more specifically relates to a high-efficiency abrasive belt grinding special abrasive tool for high surface integrity processing. Background technique [0002] Abrasive belt grinding process is a precision grinding process for crankshafts, camshafts and other outer circular surfaces. It is one of the effective processing technologies to improve the surface integrity and consistency of the above-mentioned workpieces. [0003] For the fatigue life of the workpiece, the influence of surface integrity characteristics such as surface texture, roughness and residual stress is very great. Therefore, in order to improve the fatigue resistance of the workpiece, a method of longitudinal abrasive belt grinding is proposed, in order to form a micro-texture that meets the requirements along the axial direction of the workpiece on the surface of the workpiece, and finally achieve the fatigu...

AI Technical Summary

Problems solved by technology

However, the processing efficiency of this processing method is low. Each time a new workpiece is processed, the workpiece needs to be rotated 180° to complete the processing.

[0005] Similar to this method is the processing method in which the abrasive belt rotates and the workpiece does not move. The defects of this method are similar to the above ones, the processing efficiency is low, and there is also the disadvantage that the directionality of the longitudinal microscopic texture is not strong.

However, the longitudinal grinding methods such as the abrasive belt not moving, the workpiece rotating, and both the abrasive belt and the workpiece rotating, although the processing efficiency is relatively high, also have the problem that the directionality of the longitudinal microscopic texture is not strong.

The root cause of these problems is that there is no special tool for longitudinal abrasive belt grinding on the market, and some innovative methods can only be used on the basis of traditional grinding tools.

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