普通鸡心夹头用在批量生产中,尤其是切削加工周期很短的工件,就显得紧张费劲,效率不高。最近我设计了一具能利用切削力自动夹紧工件的自动鸡心夹头(图1),它能克服普通鸡心夹头的缺点。此夹头在加工φ12×170双头阶梯轴时,粗车切深1mm、走刀量为0.5mm/r。经过了近五个月的实际使用,累计装夹次数近十万次,证明它的结构可靠,效果良好,在用普通车床加工同类长轴零件时都可采用。 Common chick chucks used in mass production, especially in the short machining cycle of the workpiece, it seems tense, inefficient. Recently, I designed an automatic centering chucks (Figure 1) that can use the cutting force to automatically clamp the workpiece, it can overcome the shortcomings of the ordinary center chick. This chuck in the processing φ12 × 170 double-headed ladder shaft, the rough cut depth 1mm, take the amount of 0.5mm / r. After nearly five months of actual use, the cumulative number of times installed nearly 100,000 times, proving its structure is reliable, good effect, with the use of ordinary lathe machining similar long-axis parts can be used.