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Quick withdrawal of twist drill device
Replace the taper bit on the rocker drill, usually with a diagonal iron tapping method (Figure 1). In this way, not only is the work efficiency low, but also the life of the spindle sleeve is greatly affected. To this end, we have made a quick-removal twist drill bit device, which is introduced as follows: 1. Working principle The quick-retracting twist drill device (Fig. 2) is composed of outer casing 1, retaining ring 2, cross pin 3, screw pin 6 and so on. When installing the device, first put the outer sleeve 1 on the spindle sleeve 5, the outer diameter of the outer sleeve 1 and the main shaft