在螺钉上钻销子孔(如图 b 所示)。以前我们是先把工件放在 V 形铁或专用钻模里,固定后再开始钻孔。但在生产批量较大时,用这种办法加工效率太低。经过车间技术人员和工人同志商量,制造了如图 a 所示的快速钻模。在钻模上装有手柄6,在手柄6的两端各装一个销钉2、3,当工件4放到钻模的定位孔内后,就转动手柄6,使后面的销钉3把工件4压住,就可开始钻孔。钻完孔以 Drill pin holes in the screws (as shown in Figure b). Before we put the workpiece on the V-shaped iron or special drill, fixed and then start drilling. However, in the production of large quantities, using this method of processing efficiency is too low. After workshop technicians and workers to discuss comrades, as shown in Figure a rapid drilling. A drill 6 is mounted on the die and a pin 2, 3 is mounted on each end of the handle 6. After the workpiece 4 is placed in the positioning hole of the die, the handle 6 is rotated so that the pin 3 on the rear presses the workpiece 4 , You can start drilling. Drill hole to