| 摘要 |
PCT No. PCT/SE91/00537 Sec. 371 Date Feb. 9, 1993 Sec. 102(e) Date Feb. 9, 1993 PCT Filed Aug. 14, 1991 PCT Pub. No. WO92/03258 PCT Pub. Date Mar. 5, 1992.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 a 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 phi 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. |
