论文部分内容阅读
利用车床小拖板进刀车削圆锥工件时,中拖板或小拖板圆盘刻度的最小单位是度,而工件的圆锥斜角都是以分秒计算的,这是用小拖板进刀车削圆锥精度不能保证的主要原因。如果把圆锥部份分解成一个矩形和两个直角三角形(图1),AC与AB所形成的夹角α就是工件的圆锥形半角。车削圆锥时,当车刀的刀尖行进AC的距离时,务必使车刀相应位移BC的距离。为了达到上述目的,可以在小拖板上安置一个磁力百分表座,把百分表的触头触及尾座套筒的表面
The use of small lathe lathe turret knife feed into the workpiece, the small unit or small carriage dial scale is the smallest degree, and the workpiece taper angle are calculated in sepsis, which is to use small drag the knife Turning cone accuracy can not guarantee the main reason. If the cone is partially broken down into a rectangle and two right-angled triangles (Figure 1), the angle α formed by AC and AB is the conical half-angle of the workpiece. When turning a cone, be sure to allow the turning tool to shift the distance BC when the tool nose travels the distance AC. In order to achieve the above-mentioned purpose, a magnetometer base may be arranged on the small carriage so that the contact of the dial indicator touches the surface of the tailstock sleeve