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夹头结构如图所示,由滑板1、调节螺杆2、主体3、滑杆4等件组成。具有制造简单,使用方便等特点。适用于攻M 14以下各种螺纹。工作时,丝锥带着滑杆4连同滑板1向前滑动,当丝锥进到所需深度时,滑板也刚好走出主体,这时,滑板连同滑杆、丝锥一起随着工件空转,丝锥也就不再向前,此时,只要立即使工件反转,挡销8可挡住滑板,丝锥便自动退出来。挡销有一斜面,当滑板正转时,销子靠斜面作用退进出,所以,
Chuck structure shown in the figure, by the skateboard 1, adjusting screw 2, the main body 3, slider 4 and other components. With manufacturing simple, easy to use and so on. Suitable for tapping M14 following various threads. Work, the tap with slider 4 along with the slide 1 forward slide, when the tap into the desired depth, the skateboard just out of the main body, then, together with the slide slider, tap with the workpiece idling, the tap is not Then forward, this time, as long as the workpiece is reversed immediately, retaining pin 8 can block the slide, the tap will automatically exit. Stop pin has a ramp, when the skateboard is rotating, the role of the pin back out by the ramp, so,