| 摘要 |
PURPOSE:To keep of any drop in a friction factor between a tilted inner wall surface and a V-block as well as to secure an optimum contact state, by setting up a connecting lever in a direction orthogonal with a tip end of a holding shaft, and grinding the titled inner wall surface of a V-pulley with the abrasive member attached to both ends of the lever after the elapse of the specified time since operation has started. CONSTITUTION:From intervals between V-pulleys 4, 5, 6 and 7 installed in a driving shaft 1 and a driven shaft 2, a holding shaft 9 being parallel with these shafts 1 and 2 and free of movement in the axial direction is inserted and set up thereat, and a connecting lever 13 being free of slide motion in a direction orthogonal with the holding shaft 9 is set up in the tip end. And, tilted inner wall surfaces 3', 4', 5' and 6' of these V-pulleys 3, 4, 5, 6 are ground with abrasive members 15 and 15' attached to both ends of the connecting lever 13 at the time of the specified time elapsing after operation starting, with the holding shaft 9 moved to the axial direction. Therefore, along with the elapse of operation time, any drop in a friction factor between these tilted inner wall surfaces 3', 4', 5' and 6' of the V-pulley and both ends of an endless driving belt 7 is prevented from occurring, thus an optimum contact state is securable.
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