| 摘要 |
<p>An apparatus arranged for grinding, polishing, etc. with a closed loop (5) of grinding, polishing, etc. belt mounted on the output shaft of a motor (1) and driven by a rotating drive wheel (4). This loop belt (5) is intended to be applied against a workpiece which is to be machined by means of the loop belt (5), said closed loop (5) having loop portions differing from one another in running direction. The loop (5) is steered by steering members (2: 8, 9: 10, 11) to adopt an essential L-shape and comprising at least two loop portions, of which the loop portion (5d) which is arranged to make contact with said workpiece is preferably selected shorter than the other loop portion (5a, 5b, 5f, 5g). Said drive wheel (4) for driving of the belt (5) is arranged displaceable relative to a foundation (17) by a guide (19) steered by the foundation (17) and turnable by means of guide members (3) arranged on the guide. An angle (Ø) existing between the L-shaped coil portions (5a, 5b, 5g, 5f and 5c, 5d, 5e respectively) of the loop (5) is resettable, for instance by means of resetting members (16) and is lockable by means of locking members (14, 15).</p> |
