| 摘要 |
<p>PURPOSE:To make such a cylindrical rubber surface as being excellent in cylindricality accuracy formable with few working processes, by performing a cylindrical grinding job in the state that both ends of the rubber layer formed on an outer circumferential surface of a core bar. CONSTITUTION:A rubber layer 11b of pinch roller 11 is pressed by tension metal devices 13 at both sides where are therefore deformed in a convex form. In this state, when a grindstone 14 is amde contact with the rubber layer and cylindrical rubber grinding takes place, both these ends of the rubber layer 11b are superfluously ground, so that after the tension metal device 13 is removed, both these ends of the rubber layer 11b come into a state of being almost tapered. Therefore, the rubber layer 11b formed on a core bar 11a is not a perfect cylindrical form, though, but at least the whole form of the pinch roll 1 will not come to a concave part in the central part, and a quantity of the rubber layer 11b, projected to both ends of the core bar 11a, is controlled whereby it can be made into such a form as approximating to cylindricality.</p> |
