Six axis machine tool

Details Six axis machine tool Six axis machine tool

B - Operations, Transporting

23

C

B23C 1/06 (2006.01) B23C 9/00 (2006.01) B23Q 1/54 (2006.01) B23Q 5/40 (2006.01) B25J 9/16 (2006.01) B25J 17/02 (2006.01) G05B 19/23 (2006.01) G05B 19/401 (2006.01) G05B 19/408 (2006.01)

Patent

CA 2065260

2065260 9103145 PCTABS00003 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.

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