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1.在自动线工位夹具中的定位 采用的定位方式 在箱体零件上加工座标面系时采用如下的定位方式:用三个相互垂直的平面定位、用两个相互垂直的平面和一个孔定位,用一个平面和两个孔定位、用一个平面和三个孔定位。 箱体零件由于结构复杂,决定了必须采用需要多次重新定位装卡工件的多工序加工方案。用自动线加工工件时坚持基准不变的原则是很重要的,因为变换基准时要求使用不同型式的夹具,造成输送工件的困难,需要自动重新定位装卡的辅助装置。选择基准应保证能引进刀具加工数量最多的表面,即为最大限度地集中工序创造条件。以一个平
1. Positioning in automatic line fixtures Fixing method The following positioning methods are used to process the coordinate system on the box parts: Positioning with three mutually perpendicular planes, using two planes perpendicular to each other and a hole Positioning, positioning with one plane and two holes, positioning with one plane and three holes. Due to the complicated structure of the box parts, it is determined that a multi-process machining scheme that needs to reposition and load the workpiece several times must be adopted. It is important to adhere to the principle of constant fiducials when machining workpieces with automatic lines because different types of jigs are required to change the fiducial, resulting in difficulties in transporting the workpieces and the need to automatically reposition the cards. The selection criteria should ensure that the largest number of tools can be introduced to create the conditions for maximum concentration. Take a flat