Synchronous deburring tool for precise match grinding of valve element of servo valve

Abstract

The invention relates to a servo valve, in particular to a precise machining device for a valve element of the servo valve. A synchronous deburring tool for precise match grinding of the valve elementof the servo valve comprises a base mounted on a grinder bed, and a longitudinal moving mechanism, a radial moving mechanism and a radial fine adjustment mechanism are arranged on the base and drivea deburring pressing head assembly to move and adjust the position relative to the to-be-machined valve element; and the deburring pressing head assembly comprises a sliding shaft seat with a throughhole, a rotatable handle is screwed into the rear end of the through hole, the handle is in threaded connection with a sliding shaft and drives the sliding shaft to move, a universal-joint-shaped ballseat is arranged at the front end, extending out of the sliding shaft seat, of the sliding shaft, the ball seat and a ball head of the sliding shaft are in clearance fit, and a deburring pressing head used for deburring a working edge is mounted on the position, close to the side surface of the valve element, of the ball seat. After the working edge is axially ground, the expected deburring effect on the working edge is achieved, and residual fine burrs can be slightly pressed on a small grinder by a fine pressing strip, so that the labor intensity is reduced, and the productivity is increased.

Description

technical field [0001] The invention relates to a servo valve, in particular to a precision machining device for a valve core of a servo valve. Background technique [0002] The excellent working performance of the electro-hydraulic servo valve has brought great challenges to the manufacturer's machine-adding ability, and the key step is the grinding of the power stage slide valve structure. Whether it is the radial clearance of the spool valve sleeve in the slide valve structure or the size of the axial overlap of the working side, they all meet the "μm level" precision requirements. In addition, the final processing effect of each working edge of the valve core must reach the state of acute angle and sharp edge. Therefore, extremely high requirements are put forward for the deburring process of the working edge of the valve core. After radial grinding of the valve core, relatively large flanging burrs will be generated when the throttling edge is grinded axially, which wi...

AI Technical Summary

Problems solved by technology

After radial grinding of the valve core, relatively large flanging burrs will be generated when the throttling edge is grinded in the axial direction, which will affect the accuracy of the overlap test of the valve core and sleeve on the pneumatic grinding table.

The operator always repeats the cycle of "grinding machine—manual bead removal on ordinary vehicles—testing overlap—grinding machine". It takes at least 5-6 cycles to finish grinding a valve core, and some even more than ten times. The work intensity is high.

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