| 摘要 |
<p>Positioning device with differential division, of those constituted by a fixed body (1) which has a gear wheel with toothed front with a number of teeth N1, a second body (3) bearer of a second frontal gear wheel with a number of teeth N2 and a third intermediate body (2) formed by two opposing toothed fronts which has on one of its faces a number of teeth N1 and on the opposite face a number of teeth N2 coincident and in relation with the teeth of the rings of pieces (1) and (2), characterised in that the value of the minimum angle reached in the positioning, which is given by the difference between the angle between teeth of the first gear wheel and the angle between teeth of the second gear wheel, is an exact decimal number. <??>This minimum angle of differential displacement is 0.1 DEG whereby the datum numbers are 144 and 150 teeth respectively. When the differential minimum angle is 0.05 DEG the number of teeth is 119 and 121, whilst when the angle of differential displacement is 0.5 DEG the number of teeth is 144 and 120. <??>It is of preferred application in machine tools, work centres and milling machines. <IMAGE></p> |
