Tool fixture and process for machining measuring orifice plate part

Abstract

The invention provides a tool fixture and process for machining a measuring orifice plate part, and belongs to the field of machining. The tool fixture comprises a central spindle, and further comprises a first ejection plate and a second ejection plate. The first ejection plate and the second ejection plate are provided with threaded holes. The central spindle is provided with an external thread. The first ejection plate and the second ejection plate are in threaded connection with the central spindle and are perpendicular to the central spindle. The tool fixture and process are used for solving the problems that in the existing process of machining the measuring orifice plate part, due to the poor rigidity of the part, the part is prone to deformation in machining, the parallelism error between the two end faces of the part is large, machining efficiency is extremely low, the machining dimensional tolerance and the geometric accuracy error are large, and the technical requirements of the part can not be met.

Description

Technical field [0001] The invention relates to a tooling fixture and belongs to the field of mechanical processing. Background technique [0002] The flow measuring orifice parts are circular concentric thin plates with sharp right-angled edges. They are typical thin plate parts with high technical requirements and are widely used in the company's production. Its working principle is that the fluid flows through the right-angle side of the orifice with higher technical requirements. Through the throttling effect of the orifice, the flow rate increases and the static pressure decreases, so a pressure difference is generated before and after the orifice. The greater the fluid flow, the greater the pressure difference generated, so that the flow can be measured according to the pressure difference. Production practice shows that if any parameter such as the parallelism of the two ends of the orifice plate, the flatness of the upstream end surface of the orifice plate, the surface ...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a fixture and processing technology for processing flow measuring orifice parts, so as to solve the problem of poor rigidity of the parts, easy deformation of the parts during processing, and parallelism between the two ends of the parts in the processing of the existing flow measuring orifice parts. Large precision error, extremely low processing efficiency, large processing dimensional tolerance and geometric accuracy error, and the technical requirements of parts cannot be guaranteed.

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