在车床上,利用机械攻丝架可以攻出机件的内、外螺纹。其优点是;认头快、套得快、杆不弯、扣不歪,螺纹尺寸可以达到标准化要求。其结构如图所示:它是由机械攻丝架主体1、空心板牙架2、特制丝锥3和拧紧螺钉4所组成。使用时,先将机械攻丝架装入尾座套筒内,如果套螺杆,可将上 In the lathe, the use of mechanical tapping frame can attack the internal and external parts of the machine. Its advantages are: quicker head, set faster, the rod is not bent, buckle is not crooked, thread size can meet the standardization requirements. Its structure is shown in the figure: It consists of a mechanical tapping frame body 1, a hollow plate holder 2, a special tap 3 and a tightening screw 4. Use, the first mechanical tapping rack into the tailstock sleeve, if sets of screws, can be on