目前常用的拉键槽夹具均为圆柱导向定位,而我厂小四轮拖拉机零件——制动鼓(图1),工艺要求以内锥孔定位,并要求拉出的键槽方向应在制动鼓肋条径向上。为此,我们设计了圆锥导向定位拉键槽夹具(图2)。我们设计的夹具,解决了下面问题:1.工件加工过程中,由于拉力的作用力,使得圆锥销与工件配合过紧,不便卸下;2.键槽定向。由于以圆锥孔定位,所以端面的定位部分必须是可移动的。 Currently used pull keyway clamps are cylindrical guide positioning, and I plant a small four-wheel tractor parts - brake drum (Figure 1), process requirements within the taper hole positioning, and asked to pull out the keyway direction should brake drum ribs Radially. To this end, we designed a conical guide positioning keyway fixture (Figure 2). We designed the fixtures, to solve the following problems: 1. Workpiece processing, due to the pulling force, making the tapered pin with the workpiece too tight, uninstall; 2. Keyway orientation. Due to the conical hole positioning, the positioning of the end face must be movable.