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橄榄形泥芯盒是铸造上常用的工艺装备(图1)。在车削锥孔较小而橄榄形较长的芯盒时,不能一次车成形,必须调头车,接通橄榄型腔。调头车时,校正工件比较麻烦和费时间。如采用图2所示的夹具,就能大大减少校正工件的辅助时间和省去划线工艺。这种结构的夹具也适用于其他对合工件。一、夹具的使用(1)将直径为D~(-0.01)的定位心轴插入花盘5孔中,工件A放在角铁上,移动角铁,调整到工件A的上平面碰到定位心轴外圆时,然后固定角铁;因为主轴回转中心到角铁工作面的距离应为工件A厚度加基础板厚度D/2。
Olive-shaped mud box is cast on the box commonly used process equipment (Figure 1). In the smaller turning cone and Olive-shaped core box, can not be a car forming, you must turn the car, connect the olive cavity. Adjusting the car, the correction of the workpiece more troublesome and time-consuming. Such as the use of the fixture shown in Figure 2, you can greatly reduce the auxiliary workpiece correction time and eliminating the need for scribing process. This structure of the fixture is also suitable for other on the workpiece. First, the use of fixtures (1) the diameter of D ~ (-0.01) positioning mandrel into the disk 5 holes, the workpiece A on the angle iron, move the angle iron, adjusted to the workpiece A on the plane hit the positioning center When the shaft is outside the circle, then the angle iron is fixed; because the distance from the center of rotation of the spindle to the angle iron working surface should be the thickness of the workpiece A plus the base plate thickness D / 2.