| 摘要 |
PURPOSE:To facilitate a beveling work and to shorten the working time by pinching with pressing the peripheral edge of a metal disk by the plural work rollers having the groove in U shaped section. CONSTITUTION:A discoid iron plate 40 is vertically stood, its center circular hole is inserted into a mobile work roller 18, the iron plate outer peripheral edge is engaged with the outer peripheral groove part of stationary work rollers 22a, 22b and leaned against a contact rolling body 31a. The iron plate 40 is then pinched with the contact rolling bodies 31a, 38a by rocking supporting plates 33a, 33b to the upper part. The mobile work roller 18 is then descended by rotating a handle 15 to engage the inner peripheral edge of the iron plate 40 with the outer peripheral groove part thereof and the inner peripheral edge is pressed to the lower part by a disk spring 16. When a motor 24 is driven in this state, the stationary rollers 22a, 22b are rotated via a chain 26 and the iron plate 40 and mobile work roller 18 are rotated in order with the friction force. The beveling of the corner part of the inner and outer peripheral edges of the iron plate 40 can thus be performed simultaneously with the U shaped groove part of the work rollers 22a, 22b, 18.
|
