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US 5,630,333 AGranted
Apparatus for bending blade material
AssigneeItami Industrial Co., Ltd.
InventorChuji Yanagimoto
Life of this patent
Estimating the term…
Abstract
The invention relates to an apparatus for automatically bending a strip-shaped blade material to a predetermined configuration. An oscillating arm provided with a movable clamp portion for holding the blade material at the front end portion thereof is attached to a base. A pair of stationary bits are adjacently placed on the base near an end of the movable clamp portion of the oscillating arm at a predetermined distance. The apparatus is provided with an oscillation driving mechanism oscillating the oscillating arm horizontally and a feeding mechanism sending the blade material forward along the oscillating arm. The blade material is bent between one of the stationary bits and the movable clamp portion by oscillating the oscillating arm horizontally.
Claims32
An apparatus for bending blade material comprising:
- an oscillating arm having a movable clamp portion for freely fixing and releasing a strip-shaped blade material at a front end portion thereof and rotating freely on a vertical axis with a portion thereof slightly backward from said clamp portion connected to a base:
- a pair of stationary bits placed on said base near an end of said movable clamp portion of said oscillating arm and adjoining at a predetermined distance;
- an oscillation driving mechanism attached to said backward portion of said oscillating arm and oscillating said oscillating arm horizontally in order to bend said blade material between said stationary bits and said movable clamp portion;
- and
- a feeding mechanism sending said blade material forward along said oscillating arm, wherein a length N.sub.1 from a pivot point where said oscillating arm is attached to said base and pivots to said movable clamp portion of said oscillating arm and a distance N.sub.2 from said pivot point to a point of application where said oscillating driving mechanism applies force on said oscillating arm are arranged so that N.sub.2 /N.sub.1 =10-N.sub.2 /N.sub.1 =30.
2 more elements
An apparatus for bending blade material comprising:
- an oscillating arm having a movable mouth portion with a clearance through which a strip-shaped blade material is freely sent at a front end portion thereof and being attached to a base and rotating freely on a vertical axis that passes through a portion thereof slightly backward from said movable mouth portion;
- a pair of stationary bits placed on said base near an end of said movable mouth portion of said oscillating arm and adjoining at a predetermined mutual space;
- an oscillation driving mechanism attached to said backward portion of said oscillating arm and oscillating said oscillating arm horizontally in order to bend said blade material between said stationary bits and said movable mouth portion;
- and
- a feeding mechanism sending said blade material forward along said oscillating arm, wherein a length N.sub.1 from a pivot point where said oscillating arm is attached to said base and pivots to said movable clamp portion of said oscillating arm and a distance N.sub.2 from said pivot point to a point of application where said oscillating driving mechanism applies force on said oscillating arm are arranged so that N.sub.2 /N.sub.1 =10-N.sub.2 /N.sub.1 =30.
2 more elements
An apparatus for bending blade material comprising:
- an oscillating arm having a movable clamp portion for freely fixing and releasing a strip-shaped blade material at a front end portion thereof and rotating freely on a vertical axis with a portion thereof slightly backward from said clamp portion connected to a base;
- a pair of stationary bits placed on said base near an end of said movable clamp portion of said oscillating arm and adjoining at a predetermined distance;
- an oscillation driving mechanism attached to said backward portion of said oscillating arm and oscillating said oscillating arm horizontally in order to bend said blade material between said stationary bits and said movable clamp portion;
- and
- a feeding mechanism sending said blade material forward along said oscillating arm, wherein said feeding mechanism comprises:
- a ball screw which is arranged along with said oscillating arm and rotates freely;
- a blade material feeding member which fits on said ball screw and freely screws forward and backward and is attached to said oscillating arm and freely slides forward and backward;
- and
- a motor which is attached to said front end portion of said oscillating arm and rotates said ball screw.
6 more elements
An apparatus for bending blade material comprises:
- an oscillating arm having a movable clasp portion for freely fixing and releasing a strip-shaped blade material at said front end portion thereof and rotating freely on a vertical axis with a portion thereof slightly backward from said clamp portion connected to a base;
- a pair of stationary bits placed on said base near an end of said movable clamp portion of said oscillating arm and adjoining at a predetermined distance;
- an oscillation driving mechanism attached to said backward portion of said oscillating arm and oscillating said oscillating arm horizontally in order to bend said blade material between said stationary bits and said movable clamp portion;
- a feeding mechanism sending said blade material forward along said oscillating arm;
- and
- a first guide rail which is arc-shaped in a plane of projection is placed on said base and passes under said backward portion of said oscillating arm, and a plurality of freely rolling guide rollers attached to said backward portion of said oscillating arm hold said first guide rail and freely roll touching said first guide rail.
3 more elements
An apparatus for bending blade material comprising:
- an oscillating arm having a movable mouth portion with a clearance through which a strip-shaped blade material is freely sent at a front end portion thereof and being attached to a base and rotating freely on a vertical axis that passes through a portion thereof slightly backward from said movable mouth portion;
- a pair of stationary bits placed on said base near an end of said movable mouth portion of said oscillating arm and adjoining at a predetermined mutual space;
- an oscillation driving mechanism attached to said backward portion of said oscillating arm and oscillating said oscillating arm horizontally in order to bend said blade material between said stationary bits and said movable mouth portion;
- and
- a feeding mechanism sending said blade material forward along said oscillating arm, wherein said feeding mechanism comprises:
- a ball screw which is arranged along with said oscillating arm and rotates freely;
- a blade material feeding member which fits on said ball screw and freely screws forward and backward and is attached to said oscillating arm and freely slides forward and backward;
- and
- a motor which is attached to said front end portion of said oscillating arm and rotates said ball screw.
6 more elements
An apparatus for bending blade material comprising:
- an oscillating arm having a movable mouth portion with a clearance through which a strip-shaped blade material is freely sent at a front end portion thereof and being attached to a base and rotating freely on a vertical axis that passes through a portion thereof slightly backward from said movable mouth portion;
- a pair of stationary bits placed on said base near an end of said movable mouth portion of said oscillating arm and adjoining at a predetermined mutual space;
- an oscillation driving mechanism attached to said backward portion of said oscillating arm and oscillating said oscillating arm horizontally in order to bend said blade material between said stationary bits and said movable mouth portion;
- and
- a feeding mechanism sending said blade material forward along said oscillating arm, wherein a first guide rail which is arc-shaped in a plane of projection is placed on said base and passes under said backward portion of said oscillating arm, and a plurality of freely rolling guide rollers attached to said backward portion of said oscillating arm hold said first guide rail and freely roll touching said first guide rail.
2 more elements
Dependencies are inferred from the claim text.