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我们在生产方板牙(见图1)过程中,为了避免钻孔时孔位偏移和缩短装卡工件的时间,改进了一种自动定心快装钻模,其结构如图2所示。将手柄8向左摆动,由于轴7带有6.5毫米的偏心距,所以能将连杆6向右推动13毫米(最大距离)。连杆6利用销子5推动带有斜度等于6°的楔铁10向左移动同一距离。由于本体13上的导轨也带有与楔铁反向相等的斜度,因此,随着楔铁向左移动而又由于弹簧11的拉紧作用,就使两楔铁之间
In the process of producing square-plate teeth (see Fig. 1), we improved a self-centering quick-acting drilling die in order to avoid hole offset during drilling and shorten the time required for clamping the workpiece. Swinging the handle 8 to the left enables the connecting rod 6 to be pushed to the right by 13 mm (maximum distance) as the shaft 7 has an eccentricity of 6.5 mm. The connecting rod 6 uses the pin 5 to push the wedge iron 10 with the inclination equal to 6 ° to the left by the same distance. Since the guide rail on the main body 13 also has the same inclination as the wedge iron in the reverse direction, as the wedge iron moves to the left and due to the tensioning action of the spring 11,