| 摘要 |
A method and apparatus for control of pivoting members (see figure 1). Translating members are translated parallel to the X, Y and Z directions to fixed guides or rails (22, 24, 26, 28, 30, 32). Screw (70) and a cooperating nut translates carrier plate (54) when screw (70) is rotated by motor (72) through transmission (74). To achieve tilt of spindle (12) parallel to arces A, B, carrier mount (36) is pivotably mounted to carrier plate (54) at pivot point (64) and carrier (44) is pivotably mounted to carrier mount (36) by tunion (66). Pivot of spindle (12) through the B swing is effected by screw (34) is driven by motor (50) through transmission (52) pivotably mounted to carrier plate (54) at pin (56). Pivot of spindle (12) through the A swing is effected by screw (40) acting through nut (42) mounted to spindle carrier (44). Screw (40) is driven by motor (58) through transmission (60) pivotably mounted to carrier mount (36) at pin (62).
|
