| 摘要 |
PURPOSE:To make miniaturization and improved performance feasible by a method wherein the position of an alignment trench on the circumference of a hollow cylindrical magnet body is detected, simultaneously, notch trenches in the long direction exceeding two specific positions are provided on the aperture ends making reference to the position of the alignment trench so as to insert supporting members into these notch trenches. CONSTITUTION:When a hollow cylindrical body 1 is held by four each of rollers 3-9 and then a motor 15 is driven, a magnet body 1 is turned while when an alignment trench 11 is detected by a photosensor 17, the roller 3 stops turning. Next, after both solid-holding of the magnet body 1 in chucks 19, cutting tools 21 are inserted from aperture ends 23 of the magnet body 1 by linear cylinders 25 so as to provide notch trenches 29 at least in two directions in the hollow part 27 of the magnet body 1. Next, the insertion bottom 33 of supporting members 31 are inserted into the notch trenches 29. Through these procedures, the eccentricity of a rotation axis can be avoided thereby enabling the magnet roll capable of actuating stably to be manufactured. |
