Manufacturing process of valve element of throttle valve

Abstract

The invention discloses a manufacturing process of a valve element of a throttle valve. The manufacturing process comprises the following steps of selecting a copper alloy forming bar material which is formed by lead casting and has a diameter greater than that of a finished product, cutting the copper alloy forming bar material into a plurality of short bar materials with the same length by using cutting equipment, performing one-time processing forming on the outer diameter and an inner hole of a workpiece by using turning and milling composite numerical control equipment, and performing floating reaming for hole machining. The valve element machining procedure is short, machining errors caused by multiple times of product clamping are avoided, turnover among the procedures is reduced, the circulation cost is reduced, a floating reaming technology is adopted, tool floating machining is adopted, compared with an original technology, errors caused by multi-stage rigid connection accumulation are reduced, the coaxiality precision is guaranteed, the hole diameter machining precision is improved, and the quality of the valve element is relatively obviously improved.

Description

technical field [0001] The invention relates to the technical field of manufacturing a throttle valve core, in particular to a manufacturing process for a throttle valve core. Background technique [0002] A throttle valve is a valve that controls fluid flow by changing the throttle section or throttle length. A one-way throttle valve can be combined by connecting the throttle valve and the one-way valve in parallel. Throttle valve and one-way throttle valve are simple flow control valves. In the quantitative pump hydraulic system, the throttle valve and the overflow valve cooperate to form three kinds of throttling speed regulation systems, that is, throttling and speed regulation of the oil inlet circuit. system, oil return throttling speed regulating system and bypass throttling speed regulating system. The throttle valve has no flow negative feedback function and cannot compensate the speed instability caused by the load change. It is generally only used in occasions w...

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Problems solved by technology

[0009] The manufacturing process of the spool in the prior art has the following defects: Since the product drilling bit and the spindle are rigidly connected, and the product needs to be clamped multiple times, the aperture will appear "bell mouth", and the concentricity of the aperture is poor, resulting in a large diameter of the aperture. Unstable, the final refraction to the product is a large flow deviation, so the quality of the finished product is poor; and because of the many processes and turnover, it takes a long time and the production efficiency is low

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