| 摘要 |
This invention comprises a control for moving a headstock longitudinally on a radial arm of a radial drilling machine and for moving the radial arm angularly about the axis of rotation, by moving the headstock a predetermined distance along an X-X axis and also moving said headstock a predetermined distance along a Y-Y axis at right angles to the X-X axis, for bringing the axis of the drill spindle on the headstock from one drilling position to another drilling position. One Servo motor moves the headstock on the X-X axis and another motor moves it on the Y-Y axis. The motors may be programmed to move said headstock automatically. When the headstock is moved on the radial arm along the Y-Y axis, angular movement of the radial arm is accompanied by movement of the headstock longitudinally of the radial arm. Thus, the movement of the headstock along X-X and Y-Y axes, also moves the radial arm angularly.
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