| 摘要 |
Method and apparatus for hand drilling wherein the reaction torque generated in the hand drill from the workpiece is transferred to a support for the drill and then back into the workpiece to not only divert stress from the operator's body but also to hold the workpiece in fixed position. In one preferred embodiment, the drill support includes a holder, means mounting the body of the drill in the holder, and an elongated load transfer number on which the holder is mounted for vertical movement therealong. In use, the lower end of the load transfer member is located adjacent the side of the workpiece so that the equal but oppositely directed torques generated in the workpiece and the drill respectively will hold the workpiece fixed against the side of the load transfer member while the torque (reaction) generated in the drill is transferred away from the operator's body to the load transfer member and then into the workpiece.
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