我厂需要大量使用六方冲头(图1)。为了高效加工这种六方冲头,设计制造了一个高效夹具(图2)。其内孔与六方冲头尾圆Φ20mm为间隙配合,其间隙0.005～0.015mm。夹具的六方与内孔应同心。制造夹具的工 I need a lot of factory use six punch (Figure 1). In order to efficiently process this hex punch, an efficient fixture was designed and manufactured (Figure 2). The hole and the hexagonal punch tail circle Φ20mm gap with the gap 0.005 ~ 0.015mm. The fixture of the hexagon and the hole should be concentric. Worker making fixture