Valve element edge grinding burr form prediction method based on energy conservation

Abstract

The invention discloses a valve element edge grinding burr form prediction method based on energy conservation. According to the method, a valve element working edge grinding tiny burr form predictionmodel is established based on the energy conservation law according to a rubbing-plowing-cutting removal mechanism of materials in the grinding process, a fourth deformation zone theory and a chip bending model, and optimization of a grinding process is realized according to the action relation of the grinding depth, the feeding speed and the grinding wheel speed on the burr form. The method hasthe advantages that the edge grinding tiny burr form prediction model based on energy conservation is established, a basis is provided for burr formation active control and accurate removal, and burrformation can be remarkably reduced or inhibited.

Description

technical field [0001] The invention relates to a technology in the field of mechanical processing, in particular to a method for predicting the shape of a grinding burr on a valve core edge based on energy conservation. Background technique [0002] The edge of the servo valve spool is the intersection edge of each step end surface of the spool and the outer circular surface. The requirements for these edges are not to be blunt, to keep sharp edges and to have no burrs. The geometric shape of the edge of the spool and the accuracy of the axial dimension determine the performance of the servo valve, and are the key factors to ensure that the servo valve can be in the correct position during the process of oil inlet and outlet. As the key characteristics of the servo valve, the overlap of the spool and valve sleeve is the key characteristic of the servo valve. The control of the matching size, that is, the overlap, has a direct relationship with the performance of the servo ...

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Problems solved by technology

[0004] The invention aims at the complexity of the grinding process in the prior art, the size of the grinding burr is too small, the reliability of the parameters obtained through detection in the grinding process is poor; and other problems, a method for predicting the shape of burrs in valve core edge grinding based on energy conservation is proposed. Based on the in-depth analysis of the formation mechanism of burrs, the formation of burrs can be significantly reduced or suppressed by establishing a mathematical model and optimizing the grinding parameters.

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