Patent ID: 6434988
Filing Date: 2002-08-20
Classification: B21H

Abstract:
A tool controlling apparatus for working or pushing by moving the work and a tool relatively during processing work, comprising:a position controlling means for controlling position of said tool; and a pushing controlling means for controlling a pushing force of said tool, which is applied to the work; wherein said tool is guide rollers which are used in an annular body forming apparatus in which an annular-shaped work is rotated while being interposed between a mandrel and a forming roller, so that the work is rolled to expand a diameter thereof, and said guide rollers support an outer peripheral surface of the work by sandwiching the work at opposite sides with respect to an axial line connecting a rotational center of said mandrel and a rotational center of said forming roller; and wherein said pressing force of said guide roller in a finishing feed step of said annular body forming apparatus is set to be lower than that in a rough feed step of said annular body forming apparatus.