Machining method based on sleeve type valve plug component

Abstract

The invention provides a machining method based on a sleeve type valve plug component. The machining method is used for solving the problem that an existing machining method affects the quality and precision of a finished product. The machining method comprises the following steps that a valve rod pretreatment machining step is carried out, specifically, a valve rod is subjected to finish machining to a finished product size; a valve plug pretreatment machining step is carried out, specifically, the non-peripheral surface part of a valve plug is machined to the size of the finished product, and the peripheral surface of the valve plug is machined until a rough machining procedure is completed; a part assembling step is carried out, specifically, the valve rod and the valve plug which are subjected to pretreatment processing are assembled to form a semi-finished product; and a semi-finished product machining step is carried out, specifically, the valve plug is axially stressed and clamped through an axial clamping tool, and the finish machining cutting amount of the peripheral surface of the valve plug is determined and machined through the roundness runout and straightness of the valve rod on the semi-finished product with the valve rod as the benchmark. The method has the characteristics of high machining precision and high machining efficiency.

Description

technical field [0001] The invention relates to the field of valve processing, in particular to a method for processing a sleeve-based valve plug component. Background technique [0002] In the structural design of the sleeve valve, the valve plug part is one of the key components of this series of products, and is also the core component of each series of sleeve valves. [0003] Generally, this part is composed of a valve stem and a valve plug assembled and mechanically fastened. It has the advantages of large guiding area, good shock resistance, strong cavitation resistance and cavitation resistance. However, the base material category of this type of part is : S20910+440C; 316L+(316L+ST6); 316L+1Cr12WMoV and other substrates, that is, this type of substrate has the characteristics of high cutting heat, large linear expansion coefficient, easy sticking to the knife, and easy wear of the tool; There have always been two or more times of clamping, difficult control of size ...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a sleeve-based valve plug component processing method, which is used to solve the problem that the existing processing method requires multiple clamping, resulting in reduced processing accuracy, while the existing Using the radial clamping method will cause damage to the outer peripheral surface of the valve plug, and the clamping position needs to be replaced. Multiple factors lead to a decrease in the machining accuracy of the valve plug. At the same time, the existing processing method processes the valve plug and the valve stem separately. Assembled as a finished product, there are assembly errors, and the errors of each processing standard are superimposed after assembly, which further affects the quality and accuracy of the finished product

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