| 摘要 |
PURPOSE:To impart a matching mark to the work by having laser irradiating parts of thereof in a pulse after it is balanced in rotation. CONSTITUTION:The work 1 is supported rotatably on supporting bases 2 and 2 and driven to rotate with a driving belt 3. At the same time, unbalancing in the rotation is detected by a means notillustrated. Laser beam 5 is irradiated on a drawing of a wheel 1b to remove an eccentric load on the circumference of the work. After the work 1 takes a rotation balancing, laser beams 7a, 7b and 7c are applied in a pulse to the end of a working shaft 1a thereof, the circumference of a wheel 1b and the end of a nut 1c from a laser beam source 4 to cause a rough surface at the irradiation point by discoloring or slight melting to make matching marks 6a, 6b and 6c respectively. |
