Device and method for rapid finishing of high-hardness coating surface

Abstract

The invention relates to a high-hardness coating surface rapid finishing device and method. A rotating bed base plate of the device is provided with a spindle chuck for positioning a workpiece to be processed and a tailstock arranged opposite to the spindle chuck; the rotating bed base plate is further provided with a reciprocating machine and a grinding head assembly for processing a high hardness coating surface of a cylindrical shaft part to be processed; the reciprocating machine comprises a reciprocating machine shell, a screw nut is arranged in the reciprocating machine shell, the screwnut is mounted at the middle portion of a lead screw, the reciprocating machine shell is provided with an avoiding hole which is matched with the lead screw to be assembled, the diameter of the avoiding hole is larger than the diameter of the lead screw, the upper part of the reciprocating machine shell is mounted with a mounting seat, and the grinding head assembly is mounted on the mounting seat; and the grinding head assembly comprises a grinding head and a grinding head mounting machine case, and the grinding head is mounted in the grinding head mounting machine case through a grinding head pressure pretensioning device. The high-hardness coating surface rapid finishing device and method solve the problems that a traditional grinder machine is extremely low in HV1200 or more high-hardness coating efficiency, the surface has vibration lines, the cylindricity is prone to being overproof, a diamond grinding wheel is seriously abraded, and cost is high; and the processing efficiency ishigh, and the coating surface quality is good.

Description

technical field [0001] The invention belongs to the technical field of high-hardness coating machining and polishing equipment, and in particular relates to a high-hardness coating surface rapid finishing device and method. Background technique [0002] High hardness coating refers to the coating whose microhardness is greater than HV1200. The performance characteristics of this coating are high hardness, high wear resistance and good compactness. Generally, after spraying, the surface roughness of the coating can reach Ra1.6~Ra1.2 through instrument detection, and it is black. After spraying, the coating needs to be machined and polished to make the surface of the coating bright and metallic, and the roughness can reach Ra0.4 or higher to meet the requirements of use. [0003] The surface finishing method of the traditional high hardness coating mainly relies on the grinding process of the grinding machine. [0004] Traditional coating surface finishing methods have the f...

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Problems solved by technology

[0005] 1. Since the hardness of the high-hardness coating is greater than HV1200, the traditional grinding machine cannot machine such a high-hardness coating or the processing efficiency is extremely low. Usually, a shaft part with an outer diameter of 80 and a length of 1 meter is sprayed with a coating With a thickness of 50μm, it takes 1~3 days to process a bright surface, and it is difficult to machine the size to the target value

[0006] 2. The traditional machining method consumes a lot of grinding wheel, wears quickly and costs high

[0007] 3. The surface roughness of the workpiece after traditional machining is difficult to reach the required value. For slender shaft workpieces, chatter marks are likely to occur, resulting in unqualified cylindricity of the workpiece

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