Mold design of oxygen sensor clamping sleeve

ZHAO Yan，GENG Juan

（The college of Mechanic and Electronic Engineering，Wuhan University of Technology，Wuhan 430070，China）

Abstract：Aiming at the problem of the clamping sleeve of the oxygen sensor in quality，the structure characteristic of the oxygen sensor and its clamping sleeve were researched，a set of stamping mould of clamping sleeve of oxygen sensor which can fix sensitive elements of the device with the clamping sleeve together through stamping was designed. Firstly，the circumference compressing manufacturing craft was confirmed on the basis of the characteristics of the radial plastic deformation of the clamping sleeve. Considering the mould to transform the vertical movement of the punching machine into the horizontal motion by which the clamping sleeve do the radial plastic deformation，the gland wedge structure was designed. Then the pressing load calculation proves that the gland wedge structure obeys the mould designation criteria that the mould pressing load cannot surpass the selected stamping equipment nominal pressure. Selecting briquetting block and connection screw to make stress analysis with ANSYS，applying loads and constraints to them，then launching the solution process，the analysis results in the postprocessor of ANSYS were obtained and observed. The results indicate that briquetting block and connection screw keep high stiffness and strength that can satisfy the service condition perfectly.

Key words： stamping mould of clamping sleeve；circumference compressing manufacturing；gland wedge structure；pressing load calculation；stress analysis with ANSYS