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这种钻模用在管形工件上钻直径不大的圆孔。它由压杆1、缺口垫圈2、钻套板3、钻套4、定位套5、弹簧6、垫圈7、防松螺帽8等零件组成。定位套5的中间有一个孔,压杆1的一端就由此穿过。工作时先把钻模固定在钻床工作台上。管形工件穿过压杆1的柄部,装在定位套5上;然后拉开压杆,在工件的端面和压杆的肩胛之间插入缺口垫圈2。一放开压杆,由于弹簧6张力的作
This drill is used to drill a small diameter circular hole in a tubular workpiece. The utility model is composed of a pressure rod 1, a notched washer 2, a drill sleeve plate 3, a drill sleeve 4, a positioning sleeve 5, a spring 6, a washer 7 and a locknut 8. In the middle of the positioning sleeve 5 there is a hole through which one end of the pressure rod 1 passes. First work on the drill fixed drilling table. The tubular workpiece passes through the shank of the strut 1 and is mounted on the positioning sleeve 5. The strut is then pulled open and a notched washer 2 is inserted between the end face of the workpiece and the shoulder of the strut. A release lever, due to the tension of the spring 6 made