Size-variable clamp for abrasive flow machining of valve block through hole

Abstract

The invention discloses a size-variable clamp for abrasive flow machining of a valve block through hole. The size-variable clamp comprises a bottom plate, a cover plate, side plates, angle plates, a supporting plate and a variable washer. The bottom plate comprises a center threaded hole, four positioning holes, four trapezoidal sliding grooves and four fixed threaded rods; the cover plate comprises a center flowing channel and four through holes; each side plate comprises two flowing channel through holes and a trapezoidal sliding rail; each angle plate comprises two sliding grooves matched with the corresponding side plates, four semi-circular holes matched with the flowing channel through holes of the corresponding side plates, an internal partition plate and an external fastening auxiliary plate; the supporting plate at the bottom comprises a threaded rod, a bearing and four positioning rods; and the variable washer is formed by four movable angle sliding blocks in a matched mode.The size-variable clamp is designed specific to abrasive flow machining of the valve block through hole, the innovation point of the size-variable clamp lies in that the size of the clamp can be changed, through hole parts inside regular hexahedrons of different sizes can be machined, mounting is convenient, the machining efficiency is high, and the roughness of an inner hole is significantly reduced.

Description

technical field [0001] The invention relates to a variable-size fixture for machining a through hole of a valve block by abrasive flow. Background technique [0002] The hydraulic valve block is a block used to control the flow of hydraulic oil. The hydraulic valve block is generally used in electro-hydraulic servo hydraulic control systems. The hydraulic valve block can simplify the connection of the hydraulic pipeline, facilitate the integration of the hydraulic system, and reduce the risk of hydraulic oil leakage in the hydraulic system. In addition, due to the use of the valve block, the structural design of the hydraulic system is simplified, which is beneficial to the hydraulic system. Standardized and the installation process simplified. [0003] Abrasive flow uses polishing liquid as a carrier, and under a certain pressure, the abrasive particles and the surface of the part are rubbed and collided with each other, so that the micro-protrusion part of the surface of ...

AI Technical Summary

Problems solved by technology

[0004] After the hydraulic valve block is processed, there are certain burrs in the inner hole. The existence of burrs makes the hydraulic system have a certain risk of failure. The traditional removal method is to remove the burrs by manual or power-driven brushes, but for deep holes, right-angled Turning pipelines and crossing pipelines have poor removal effects; therefore, abrasive flow polishing is used to smooth the valve block by using the characteristics of abrasive flow flow, thereby reducing the roughness of the through hole inside the valve block

Images