Method and device for magnetic grinding of inner annular groove and outer annular groove of sealing sleeve part

Abstract

The invention discloses a method and device for magnetic grinding of an inner annular groove and an outer annular groove of a sealing sleeve part. The method comprises the steps that a workpiece is clamped on a main shaft chuck, an arc-shaped magnetic pole is installed on a magnetic pole fixing rod of the grinding device, a sintered magnetic grinding material and a water-based grinding fluid are mixed, then a machining gap is evenly filled with the mixture, a lathe is started, the magnetic pole is fixed and does not move, and a main shaft and the workpiece are driven by a motor to rotate, so that fine grinding of the inner groove and the outer groove is achieved; super-fine grinding is conducted on the inner groove and the outer groove by replacing the sintered magnetic grinding material. The device is composed of an ordinary lathe and a magnetic grinding mechanism, wherein the magnetic grinding mechanism comprises a longitudinal lead screw, a transverse lead screw, an inner magnetic pole fixing rod, an outer magnetic pole fixing rod, an inner magnetic pole, an outer magnetic pole, a magnetic grinding material, an adjustment gasket and a main shaft chuck. According to the method and device, a reasonable rotating speed of the main shaft can be set according to the precision requirements of the bottoms of the grooves, and the sealing sleeve part is ground efficiently in a high-quality mode.

Description

technical field [0001] The invention relates to a grinding and polishing method and a device thereof, in particular to a magnetic grinding method and a device for inner and outer ring grooves of a sealing sleeve part. Background technique [0002] The dimensional accuracy and surface quality of sealing parts (such as pistons) directly affect the service performance and life of the hydraulic mechanism. Due to the special structure of the pneumatic components in the automobile engine, higher requirements for dimensional accuracy, shape accuracy and surface quality are also put forward for the sealing parts. [0003] The sealing sleeve part is processed on a CNC lathe through multiple processes, and a large number of processing textures and burrs will inevitably remain on the surface of the workpiece. Because the inner and outer grooves of the part are narrow and the bottom of the groove is deep, traditional grinding tools are very difficult. Difficult to access, it is very di...

AI Technical Summary

Problems solved by technology

Using the principle of magnetic grinding, one-time positioning and clamping, the method and device for completing the precision machining of all inner and outer groove surfaces of sealing sleeve parts have not yet been publicly reported.

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