| 摘要 |
Drill stand including a drill column (4) having front and rear tracks (47, 47′; 48, 48′), at least one of which has a flat track surface and the other a V-shaped track surface. The column 4 includes slot receivers (49, 49′) for protective bumpers (50, 50′) and is mounted on a base plate (2). A carriage (3) reciprocates a drill motor on the drill column (4) and the carriage (3) has internal rollers (51, 51′, 52, 52′) corresponding to the front and rear tracks (47, 47′; 48, 48′).
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