我们用C8955铲床磨制M325×1.5和M260×3等规格的螺纹环规时,螺纹半角无法直接测量。我们采用磨测量块检验半角的方法来保证螺纹环规半角的精度,效果较好。 如图所示,将测量块6装在组合夹具上(自制夹具也行),使螺纹角的轴向截面通过机床回转中心,即圆盘回转中心,以组合夹具平键5的一侧面为A面的定位面,以方形支承4的顶面为B面的定位 We use C8955 shovel bed milling M325 × 1.5 and M260 × 3 and other specifications thread ring, the thread half-angle can not be measured directly. We use grinding measurement block test half-width method to ensure the accuracy of thread ring half-width, the effect is better. As shown in the figure, the measuring block 6 is mounted on a combination jig (self-made jig is also OK) so that the axial cross-section of the thread angle passes through the center of rotation of the machine tool, that is, the center of rotation of the jig, Surface of the positioning surface, the top surface of the square support 4 for the B side of the positioning