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现需加工显微镜中的斜齿条,如图1所示。齿条的法向模数m_n为0.5,螺旋角β为15°、右旋。现采用如图2所示的夹具来加工。夹具安装在车床床身的固定拖板5上,其上设置中拖板4。在中拖板上安装角铁9,角铁的前面与主轴平行,并在此平面上装上斜向小拖板3.小拖板上可装工件齿条坯2,小拖板沿斜向移动,它的移动轨迹所在垂直面与主轴垂直面相平行.这样保证齿条齿深相等。主动拖板7上的推杆6推动外向小拖板,拉伸弹簧8使小拖板紧靠着推杆6,保证斜向小拖板正确地移动和防止切削振动.齿深进刀由中拖板来调整,滚刀安装在车床主轴上.
Is the need to process the microscope in the rack, shown in Figure 1. The normal modulus of the rack m_n is 0.5, the helix angle β is 15 °, right-handed. Now use the fixture shown in Figure 2 to process. Fixture mounted on the lathe bed of the fixed carriage 5, set on the carriage 4. In the carriage mounted angle 9, angle iron in front of the spindle parallel, and in this plane mounted oblique small carriage 3 small carriage can be mounted on the work piece blank 2, the small carriage moves along the diagonal , The vertical plane of the moving track is parallel to the vertical plane of the spindle, which ensures that the tooth depth of the rack is equal. The push rod 6 on the driving carriage 7 pushes the outer small carriage, the tension spring 8 enables the small carriage to abut against the push rod 6 to ensure that the small carriage moves diagonally and prevents cutting vibration. Drag to adjust, hob mounted on the lathe spindle.