Six axis machine tool
    2.
    发明授权
    Six axis machine tool 失效
    六轴机床

    公开(公告)号:US5354158A

    公开(公告)日:1994-10-11

    申请号:US835949

    申请日:1992-02-20

    摘要: A machine such as a machine tool includes a pair of spaced platforms. One platform (11, 31, 185, 72, 159, 142) may mount an operator such as a tool in a spindle and the other platforms (10, 20, 180, 170, 144, 163) may mount an object such as a workpiece. The spaced platforms are joined by six powered and extensible legs (20-25, 40-45, 64-69, 145-150, 166, 182-84, 187-89) joined to the respective platforms by universal joints. The length of the legs is individually manipulated to vary the position of the platforms and, therefore, the object and operator relative to each other in six axes. The powered legs may be hydraulic cylinders (20-25) or recirculating ball screw driven (195, 197, 198). The distance between the spaced platforms may be measured by separate extensible instrument arms (130, 131, 171) which join the platforms. The instrument arms may use a digital position device (238, 240) to measure the extension and contraction of the instrument arms or may use a laser interferometer (267) for that purpose. The changes in the length of the instrument arms may be used to generate signals that control the extension and contraction of the powered legs. A method is also disclosed for converting part program coordinate block instructions into instructions for varying the length of the powered legs.

    摘要翻译: PCT No.PCT / US90 / 04797 371日期1992年2月20日 102(e)日期1992年2月20日PCT提交1990年8月28日PCT公布。 出版物WO91 / 03145 日期1991年3月21日。机器如机床包括一对隔开的平台。 一个平台(11,31,185,72,159,142)可以将诸如工具的操作者安装在主轴中,并且其他平台(10,20,180,170,144,163)可以安装诸如 工件。 隔开的平台通过万向接头连接到各个平台上的六个动力和可伸展腿(20-25,40-45,64-69,145-150,166,182-84,187-89)连接。 腿的长度被单独操作以改变平台的位置,并因此改变物体和操作者在六个轴线上相对于彼此的位置。 动力腿可以是液压缸(20-25)或驱动的循环滚珠丝杠(195,197,198)。 间隔平台之间的距离可以通过连接平台的单独的可伸展的工具臂(130,131,171)来测量。 仪器臂可以使用数字位置装置(238,240)来测量仪器臂的延伸和收缩,或者可以为此目的使用激光干涉仪(267)。 仪器臂的长度的变化可用于产生控制动力腿的伸展和收缩的信号。 还公开了一种用于将部分程序坐标块指令转换成用于改变动力腿的长度的指令的方法。