A Processing Fixture for Precisely and Quickly Extruding the Inclined Hole of Valve Seat

Abstract

The invention discloses a machining fixture for precisely, quickly and hydraulically extruding valve base inclined holes. The machining fixture comprises a guide sleeve, a first dowel pin, a positioning valve and a liquid guide valve; the guide sleeve is of a sleeve structure provided with a through hole in the center of the upper end surface; a valve base is mounted in the guide sleeve; a middlehole of the valve base is coaxial with the through hole of the guide sleeve; the positioning valve is arranged under the valve base; the liquid guide valve is arranged under the positioning valve, andis in threaded connection with the inner cylinder wall of the guide sleeve; the middle hole of the valve base comprises an upper hole and a lower hole; the upper hole communicates with a micro inclined hole of the valve base; a concave hole is formed in the top of the positioning valve; a first positioning pin penetrates through the lower hole and the concave hole; multiple liquid passing holes are formed in the outer circle of the lower part of the positioning valve, and communicate with a center hole at the bottom of the positioning valve; and the center hole at the bottom of the positioning valve coaxially communicates with the through hole of the liquid guide valve. The machining fixture is high in wear resistance of selected materials, simple in installation and high in production precision, realizes precise positioning of a liquid abrasive channel, improves the machining precision of the valve base, and guarantees the product quality.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and relates to a processing fixture for accurately and rapidly hydraulically extruding an oblique hole of a valve seat. Background technique [0002] The moving speed of the hydraulic support is one of the main factors restricting the production of the coal mine working face. The use of the hydraulic support electro-hydraulic control system is the most effective technical way to achieve high production of the coal mine working face. Support electro-hydraulic control is a new technology that combines electronic technology, computer control technology and hydraulic technology. The bracket electro-hydraulic control system consists of bracket controller, human-machine operation sensor, pressure sensor, angle sensor, infrared sensor, isolation coupler, power box, connector, inductive pilot valve, main valve, power cable, network converter, data summons Controller, main control computer,...

AI Technical Summary

Problems solved by technology

This process results in a part rejection rate of up to 50%

[0008] At this stage, our factory needs to purchase special equipment and corresponding tooling if it adopts soft touch or soft touch, and the capital investment is large, which does not match the situation of the factory.

Images