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    • 1. 发明授权
    • Vertical lathe
    • 立式车床
    • US06918326B2
    • 2005-07-19
    • US10860625
    • 2004-06-04
    • Masaaki MitsuzonoHiromi Yamasaki
    • Masaaki MitsuzonoHiromi Yamasaki
    • B23B3/10B23B1/00B23B3/00B23B5/00B23B5/38B23B7/16B23B21/00B23D3/02B23Q5/04
    • B23Q5/043B23B1/00B23B5/38Y10T82/2511Y10T82/2529
    • There is provided a vertical lathe which, when machining gradually varying lens grooves in a mold for molding of a Fresnel lens, can change the angle of a cutting tool without positional displacement of the cutting tip, enabling high accuracy machining of the gradually varying lens grooves. The vertical lathe includes: a column; a rotary table for rotating a workpiece; a cantilevered cross rail supported by the column; a saddle movable in a horizontal direction along a guideway of the cross rail; a ram suspended from the saddle and movable vertically along a guideway of the saddle; and an inclined head mounted to the lower end of the ram and having an inclined swivel shaft for holding a cutting tool, wherein said swivel shaft is configured to swivel the cutting tool around a nose of the cutting tool as the center of swiveling.
    • 提供了一种立式车床,当在用于成型菲涅耳透镜的模具中逐渐变化的镜片槽加工时,可以改变切割工具的角度而不会使切割刀片发生位置偏移,从而能够对逐渐变化的镜片凹槽进行高精度的加工 。 立式车床包括:一列; 用于旋转工件的旋转工作台; 由柱支撑的悬臂十字轨道; 鞍座沿着横轨的导轨沿水平方向移动; 从鞍座悬挂并沿着鞍座的导轨垂直移动的柱塞; 以及倾斜的头部,其安装到所述柱塞的下端并具有用于保持切割工具的倾斜的旋转轴,其中所述旋转轴构造成使所述切割工具围绕所述切割工具的鼻子作为旋转中心旋转。
    • 2. 发明授权
    • Slot forming apparatus
    • 槽形成装置
    • US4978263A
    • 1990-12-18
    • US360599
    • 1989-06-02
    • Peter H. Sheppard
    • Peter H. Sheppard
    • B23D3/02
    • B23D3/02Y10T409/503116Y10T409/5041Y10T409/506232
    • An apparatus for forming a slot in a workpiece is disclosed. A variable radius crank, driven by a generating head assembly imparts a reciprocating/oscillating motion to a connecting rod. The distal end of an extension of the rod includes a tool for machining the slot. The connecting rod is mounted in a reciprocable slide and is retained therein by a transverse pin. The slide translates the motion of the connecting rod to a substantially elliptical tool motion. Thus, the tool cuts a substantially elliptical slot in the workpiece. The profile of the slot can be passively modified by selection of a different ratio of the connecting rod to the extension. A computerized control system with a programmable controller governs the operation of the generating head assembly (and thus the crank throw) to actively modify the shape and length of the slot. The control system can also be utilized to further vary the throw of the crank to provide other functional modifications to the operation, such as providing additional clearance for the return stroke of the tool.
    • 公开了一种用于在工件中形成槽的装置。 由发生头组件驱动的可变曲柄曲柄向连杆施加往复/摆动运动。 杆的延伸部的远端包括用于加工槽的工具。 连杆安装在可往复运动的滑动件中,并通过横向销保持在其中。 滑块将连杆的运动转换成基本上椭圆形的工具运动。 因此,该工具在工件上切割大致椭圆形的槽。 可以通过选择连杆与延伸部的不同比例来将狭槽的轮廓进行被动修改。 具有可编程控制器的计算机化控制系统控制发电机组件的操作(因而控制曲柄转动)以主动地修改槽的形状和长度。 控制系统还可以用于进一步改变曲柄的转动以对操作提供其它功能修改,例如为工具的回程提供额外的间隙。