关键词: 气门摇杆轴支座；工艺规程设计；夹具设计；可靠性

Abstract: Regarding to the issues that valve rocker shaft support structure is relatively complex, machining technology requirements are high and part needs to be machined on more surfaces, a specialized machining fixture is designed to meet the mass production requirements by the valve rocker shaft support part analyzing, processing specifications designing and fixture development. In terms of process, process design has been carried out based on machine tool selection and strict standards. In terms of fixture design, a plane with two V-blocks is used in this fixture to position and limit six degrees of freedom, two rotary pressure plates and movable V-block handles are used to clamp the workpiece, In this way, turnover and vibration can be prevented, part machining requirements and precision control on surface processing are better solved, and part machining reliability is guaranteed.

Key words: valve rocker shaft support; process specification design; fixture design; reliability