【摘 要】
：
这种夹头,主要用在攻丝和铰孔时,装夹丝锥和铰刀之用,可增加刃具的使用寿命、减少生产的辅助时间和提高工作效率。其结构如图所示。在锥形尾柄1的头部筒壁间装有三个传递扭
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这种夹头,主要用在攻丝和铰孔时,装夹丝锥和铰刀之用,可增加刃具的使用寿命、减少生产的辅助时间和提高工作效率。其结构如图所示。在锥形尾柄1的头部筒壁间装有三个传递扭矩的钢球6,背帽5和传动套7。钢球传递扭矩的大小,通过调压钉2、弹簧3,带30°锥形的顶头4,和在传动套7的内壁上的三个槽面之间的摩擦力矩来调节。因为攻丝或铰孔都是正转切削,所以,钢球6对传动套7内壁上槽面的升角,应保证
This chuck, mainly used in tapping and reaming, taps and reamer clamping purposes, can increase the service life of cutting tools to reduce the production of auxiliary time and improve work efficiency. Its structure as shown. Between the head cylinder wall of the tapered tail handle 1 is equipped with three torque-transmitting steel balls 6, a back cap 5 and a transmission sleeve 7. The amount of transmission torque of the ball is adjusted by the friction moment between the pressure adjusting peg 2, the spring 3, the plug 4 with 30 ° taper and the three groove surfaces on the inner wall of the transmission sleeve 7. Because the tapping or reaming are forward cutting, so the ball 6 on the inner wall of the drive sleeve 7 elevation angle should be guaranteed
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