无接合孔电极轴组件气密性检测工装的设计与验证OA

To solve the problem of air tightness detection of electrode shaft assemblies without joint holes,a set of pressure testing schemes and special pressure testing fixtures are designed.The electrode shaft assembly has no joint hole and is difficult to seal,which brings challenges to the air tightness test.Two-dimensional design combined with three-dimensional modeling assembly verification is adopted to comprehensively identify and avoid interference situations.The sealing performance and reliability of each component of the tooling are analyzed.By using the static analysis method,the sealing effect and material strength of key components such as caps and clamps under the test pressure are evaluated.The results show that the displacements of the sealing areas of each component under the test pressure of 0.5 MPa are 0.000 37 mm and 0.000 74 mm respectively,indicating good sealing performance without any sealing failure.Meanwhile,the maximum stresses are 5.71,18.5 and 7.17 MPa respectively,which are far lower than the yield strength of the material 235 MPa.The actual test verified the reliability of the tooling design,and no leakage,failure or sealing failure of the tooling occurred.On this basis,in view of the problems found in the actual operation,the optimization measures of adding the outer circle positioning groove and blocking the disassembly hole are proposed to further improve the practicability and ease of use of the tooling.A reliable and efficient pressure testing fixture is provided for the air tightness detection of electrode shaft assemblies without joint holes.It not only ensures the accuracy of the detection but also provides a theoretical basis and practical guidance for the subsequent improvement of the fixture,which is of great significance for enhancing the design level and detection efficiency of related fixtures.