| 摘要 |
PURPOSE:To enhance effectiveness in the work by coupling a corrective feed motor with the feed drive system, which is to allow the wheel spindle stock to make the feed motion for cutting-in, through a differential gearing mechanism and thereby making easily correction of the stand-by position of the grinding wheel when a stepped part of the work with different diameters is to be ground. CONSTITUTION:A support shaft 4 is installed at a drive shaft 2 equipped with a pinion 3 to be coupled with the feed screw of wheel spindle stock, and is coupled with a pulse motor 13 for feed of the wheel spindle stock through bevel gears 5, 6 and gears 9, 11, 3. Another bevel gear 7 meshes with the bevel gear 5 on support shaft 4 to constitute a differential gearing mechanism. With this bevel gear 7 in fixed condition, the number of revolutions of the bevel gear 6 is sensed with an encoder 8 to control the pulse motor 13, and thereby the wheel spindle stock is supplied with a feed according to the grinding feed cycle. In case the processing diameter is changed and in case the diameter of grinding element is changed after dressing, a pulse motor for correction 18 shall rotate the bevel gear 7. |
