Clamping apparatus for wire-electrode cutting to process operation air gap of servo valve torque-motor

Abstract

The invention discloses a clamp used for linearly cutting and processing a working air gap of a moment motor of a servo valve; wherein, the gag bit component of the moment motor is fixed on a first grade seat; an alnico is supported between an upper magnetizer and a lower magnetizer; a pressure pad is pressed on the outer ends of the magnetizers and is closely connected the pressure pad, the upper magnetizer, the lower magnetizer and the alnico in a whole to form an incomplete moment motor; the clamp consists of a cushion block and a limitation block; wherein, the cushion block of the clamp is fixed on the bottom surface of the first grade seat of the moment motor; the limitation block used for adjusting the radial position and the axial direction of the moment motor is connected at the back end surface of the cushion block and one side surface of the limitation block closely clings to the side surface of the first grade seat of the moment motor; the air gaps of four moment motors can be uniformly obtained by adopting the clamp of the invention and by the processing method of linearly cutting without reducing the property of the moment motors; besides, the invention has higher efficiency than other processing modes and ensures the consistency of a product.

Description

technical field [0001] The invention relates to a machining fixture for precision small parts, in particular to a fixture for machining the working air gap of a torque motor of a servo valve by wire cutting. Background technique [0002] The development of electro-hydraulic servo valves in the international professional field has gone through more than 50 years, and the application occasions are becoming more and more extensive. The torque motor as the electro-hydraulic servo valve is the pre-stage of the servo valve and the most important component that affects the static and dynamic performance of the servo valve. [0003] The torque motor is the power source that provides the movement and control of the spool of the controlled component of the servo valve, which directly affects the static and dynamic performance of the large servo valve. The performance of the torque motor depends to a large extent on the accuracy and symmetry of the working air gap of the armature and ...

AI Technical Summary

Problems solved by technology

[0004] For a long time, due to the importance of the working air gap of the servo valve torque motor on product performance, the processing of the air gap is achieved by precision grinding, but the grinding efficiency is very low, and it is difficult to ensure product consistency, so the processing torque The working air gap of the motor becomes a bottleneck in the production efficiency of servo valve products

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