Method and device for bending blade member
OwnerSuehiro Mizukawainventor
Life of this patent
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Abstract
This invention aims at a bending process in the width direction on a blade member (1) without leaving any unprocessed portion. According to the present invention, the thickness-deviating process of making the front end edges (41, 51) of dies (4, 5) into a portion near the blade point (12) and flowing material of the blade member (1) is carried out. The thickness-deviating process is carried out at plural positions in the length direction on both sides of the blade member (1). By making the linear shapes of the front end edges (41, 51) meet each other in the width direction of the blade member (1), the thickness-deviating process is carried out.
Claims10
A method for bending a blade member (1) in the width direction by deforming the blade member (1) having a blade point (12) at an end edge in the width direction into warp in the width direction, wherein
- thickness-deviating process of pressing and flowing material of the blade member (1) to at least one side of a portion which front end edges (41, 51) bite into through an operation of making said front end edges (41, 51) narrowed linearly as they go to the front ends, and equipped on dies (4, 5), invade and bite into a portion near a blade point (12) of the blade member (1) is carried out at plural positions in the length direction on both faces of said blade member (1) so as to deform the blade member (1) at the thickness-deviating process portions into warp in the width direction.
A device for bending a blade member in the width direction of a blade member (1) by deforming the blade member (1) having a blade point (12) at an end edge in the width direction to warp in the width direction, comprising:
- a pair of dies (4, 5) disposed on both sides across a belt-like blade member (1) such that they are capable of moving relative to each other in the direction of approaching/breaking away;
- and
- front end edges (41, 51) narrowed linearly as they go to the front ends, disposed on these dies (4, 5) and meeting each other in the width direction of the blade member (1).
Dependencies are inferred from the claim text.