目前切削齿条卡爪,仍是制造和修理车床自定中心卡盘中最复杂的工序之一。 齿条的齿(图1)应该作成半径为R和r的圆弧形段。圆周半径R和r的中心线,对齿条中心线的移劫量力α(其中t──螺距);这是使各段形面近似于阿基米德螺线所必须的,此螺线就是齿条各齿的理论齿形。一套车床自定 The current cutting jaws, is still one of the most complex processes for manufacturing and repairing lathes. Rack teeth (Figure 1) should be made of radius R and r of the arc-shaped section. The centerline of the circumferential radii R and r, the mass force α of the rack centerline (where t── pitch); this is necessary for approximating the section faces to the Archimedes spiral The theoretical tooth shape of the rack teeth. A lathe custom