Multi-stroke and single-stroke composite honing process

Abstract

The invention discloses a multi-stroke and single-stroke composite honing process and belongs to the technical field of valve core hole machining. The process comprises the following steps of A, honing valve core holes of a single sheet type multi-way valve by adopting a multi-stroke honing process, wherein the valve core holes of the sheet type multi-way valve form a continuous reticulate pattern; and B, connecting the plurality of sheet type multi-way valves, assembling and screwing the sheet type multi-way valves, and honing and reaming the valve core holes of the assembled sheet type multi-way valves by adopting a single-stroke honing and reaming process. On the basis of the multi-stroke honing and single-stroke honing and reaming composite process, multi-stroke honing adopts an on-line measurement feedback system, a mathematical model between parameters and errors is constructed, and control parameters such as rotating speed and feeding are fed back and compensated in real time, so that the single honing precision is improved; and the single-stroke honing and reaming process is adopted to hone integrally deformed valve bodies after assembling and screwing, so that the integralhoning precision is improved through the double floating forms of a tool bit and a clamp, the problem of clamping stagnation caused by deformation of the valve core holes after assembling is solved,and the certain reference significance is provided for hydraulic valve manufacturing peer enterprises.

Description

technical field [0001] The invention relates to the technical field of valve core hole processing, in particular to a multi-stroke and single-stroke composite honing process. Background technique [0002] The precision machining scheme of the valve core hole in the same industry is multi-stroke honing or single-stroke honing. The two processes have their own advantages and disadvantages. Multi-stroke honing has advantages in ensuring the straightness of the valve hole, and single-stroke honing has advantages in ensuring the roundness of the valve hole. The degree of cylindricity has an advantage, and it is difficult to meet the design requirement of cylindricity of 3 μm when the two processes are used alone. For the multi-way valve, after the monolithic honed valve body is assembled, the super-large length-to-diameter ratio valve core hole is deformed due to the tightening torque, which reduces the matching accuracy of the valve stem and the valve core hole, causing the valv...

AI Technical Summary

Problems solved by technology

[0005] 1. The inner hole honing process mentioned in the patent cannot realize online detection and real-time compensation, and the operability is not strong;

[0006] 2. The inner hole honing process described in the patent is only applicable to a single valve body structure, and cannot solve the problem of stuck deformation of the spool hole after assembly and tightening. It is not suitable for honing the spool hole of the chip multi-way valve, which is not conducive to market promotion