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本切断刀可供自动六角车床使用.垫块2相对于切断刀支承面倾斜16(?)这样倾斜可以起到如下作用:第一,勿需刃磨刀片4来进一步增大前角,因刃磨前面将导致刀片横截面强度的降低和影响刀片的使用潜力;第二,由于一个切削分力是在纵向挤压方向起作用,故可提高刀片的纵向弯曲强度,并可通过缩短压板3下面那部分刀片的长度来提高刀片的利用率.在刀片前面上磨出一个小于0.5毫米宽的倒棱,便可获得较小的前角(包括负前角).垫块的前面可形成16(?)负后角,这可增大高温切削区内的垫块的质量,以改善吸
This cutting knife can be used for automatic hexagonal lathe. Block 2 relative to the cutting blade supporting surface tilt 16 (?) Such a tilt can play the following role: First, do not need sharpening blade 4 to further increase the rake angle Grinding the front will result in a reduction in the strength of the cross-section of the blade and in the potential for its use; and second, since a cutting force acts in the direction of the longitudinal extrusion, the longitudinal bending strength of the insert can be increased and the short- The length of that part of the blade increases the utilization of the blade and a smaller rake angle (including the negative rake angle) is obtained by grinding a chamfer less than 0.5 mm wide on the front of the blade. ?) Negative relief angle, which increases the mass of the pads in the hot cutting zone to improve suction