Method and device for manufacturing vehicle arm component

Abstract

Providing a manufacturing method for a vehicular arm component that can further increase material yield. Including an expanding process S05 of pressing a pressurized portion P8 provided in a plane of a workpiece W in a Z direction to expand an X-directional width of the workpiece from a first width X1 to a second width X2, and a separating process S06 of cutting off the workpiece having an X-directional width expanded to the first width from a processed material M.

1 .- 15 . (canceled) 
     
     
         16 . A manufacturing method for a vehicular arm component for manufacturing by a progressive press working method in which a long-shaped processed material for which a blank layout is set such that a feed bridge width, which is a separation distance between workpieces that are contiguously adjacent in a feed direction, is zero is intermittently fed at a constant pitch in the feed direction and is simultaneously pressed in a plurality of positions in the feed direction, the manufacturing method for a vehicular arm component comprising:
 an expanding process of pressing a pressurized portion provided in a plane of the workpiece in a thickness direction to expand a width of the workpiece in the feed direction; and   a separating process of cutting off the workpiece having an expanded width in the feed direction from the processed material.   
     
     
         17 . The manufacturing method for a vehicular arm component according to  claim 16 , wherein a position of pressing is adjusted to perform positioning depending on expansion of the width of the workpiece in the feed direction in the expanding process. 
     
     
         18 . The manufacturing method for a vehicular arm component according to  claim 16 , wherein the pressurized portion is pressurized from both sides in the thickness direction in the expanding process. 
     
     
         19 . The manufacturing method for a vehicular arm component according to  claim 16 , wherein a length of the processed material in a perpendicular direction perpendicular to the feed direction is the same as a length of a component of the vehicular arm component in the perpendicular direction. 
     
     
         20 . The manufacturing method for a vehicular arm component according to  claim 19 , further comprising, prior to the expanding process:
 a forming process of forming, in a position that is on one side of the workpiece in the perpendicular direction and where a hole into which a support shaft for supporting the vehicular arm component to a bracket is inserted is formed, a precursor hole, which is smaller than the hole, and forming a positioning hole in a position that is on another side in the perpendicular direction;   a first cutting process of cutting out a first end at one end of a boundary portion between the adjacent workpieces in the perpendicular direction to form a notched portion and cutting out a first unnecessary portion that is provided on a side of the positioning hole facing the notched portion and follows a shape of the vehicular arm component;   a second cutting process of forming the hole in a vicinity of a position where the precursor hole is formed in the forming process and cutting out a second end that is provided at another end in the perpendicular direction and follows a shape of the vehicular arm component; and   a third cutting process of cutting out a second unnecessary portion that surrounds the positioning hole, is provided between the first unnecessary portion and the second end, and follows a shape of the vehicular arm component.   
     
     
         21 . The manufacturing method for a vehicular arm component according to  claim 20 , wherein the pressurized portion is extended such that both ends of the pressurized portion in the perpendicular direction exceed a width extending along the perpendicular direction of the boundary portion when viewed from the feed direction. 
     
     
         22 . The manufacturing method for a vehicular arm component according to  claim 20 , wherein the notched portion is formed to be longer in the perpendicular direction than in the feed direction. 
     
     
         23 . The manufacturing method for a vehicular arm component according to  claim 16 , wherein the pressurized portion is formed along a direction crossing the feed direction. 
     
     
         24 . A manufacturing apparatus for a vehicular arm component for manufacturing by a progressive press working method in which a long-shaped processed material for which a blank layout is set such that a feed bridge width, which is a separation distance between workpieces that are contiguously adjacent in a feed direction, is zero is intermittently fed at a constant pitch in the feed direction and is simultaneously pressed in a plurality of positions in the feed direction, the manufacturing apparatus for a vehicular arm component comprising:
 an expanding portion configured to press a pressurized portion provided in a plane of the workpiece in a thickness direction to expand a width of the workpiece in the feed direction; and   a separating portion configured to cut off the workpiece having an expanded width in the feed direction from the processed material.   
     
     
         25 . The manufacturing apparatus for a vehicular arm component according to  claim 24 , further comprising a biasing member configured to adjust a position of pressing to perform positioning depending on expansion of the width of the workpiece in the feed direction in the expanding portion. 
     
     
         26 . The manufacturing apparatus for a vehicular arm component according to  claim 25 , wherein the expanding portion presses the pressurized portion from both sides in the thickness direction. 
     
     
         27 . The manufacturing apparatus for a vehicular arm component according to  claim 25 , further comprising:
 a forming portion configured to form, in a position that is on one side of the workpiece in a perpendicular direction perpendicular to the feed direction and where a hole into which a support shaft for supporting the vehicular arm component to a bracket is inserted is formed, a precursor hole, which is smaller than the hole, and form a positioning hole in a position that is on another side in the perpendicular direction;   a first cutting portion configured to cut out a first end at one end of a boundary portion between the adjacent workpieces in the perpendicular direction to form a notched portion and cut out a first unnecessary portion that is provided on a side of the positioning hole facing the notched portion and follows a shape of the vehicular arm component;   a second cutting portion configured to form the hole in a vicinity of a position where the precursor hole is formed by the forming portion and cut out a second end that is provided at another end in the perpendicular direction and follows a shape of the vehicular arm component; and   a third cutting portion configured to cut out a second unnecessary portion that surrounds the positioning hole, is provided between the first unnecessary portion and the second end, and follows a shape of the vehicular arm component.   
     
     
         28 . The manufacturing apparatus for a vehicular arm component according to  claim 27 , wherein the pressurized portion is extended such that both ends of the pressurized portion in the perpendicular direction exceed a width extending along the perpendicular direction of the boundary portion when viewed from the feed direction. 
     
     
         29 . The manufacturing apparatus for a vehicular arm component according to  claim 27 , wherein the notched portion is formed to be longer in the perpendicular direction than in the feed direction. 
     
     
         30 . The manufacturing apparatus for a vehicular arm component according to  claim 24 , wherein the pressurized portion is formed along a direction crossing the feed direction. 
     
     
         31 . The manufacturing method for a vehicular arm component according to  claim 17 , wherein the pressurized portion is pressurized from both sides in the thickness direction in the expanding process. 
     
     
         32 . The manufacturing method for a vehicular arm component according to  claims 17 , wherein a length of the processed material in a perpendicular direction perpendicular to the feed direction is the same as a length of a component of the vehicular arm component in the perpendicular direction. 
     
     
         33 . The manufacturing method for a vehicular arm component according to  claims 18 , wherein a length of the processed material in a perpendicular direction perpendicular to the feed direction is the same as a length of a component of the vehicular arm component in the perpendicular direction. 
     
     
         34 . The manufacturing method for a vehicular arm component according to  claim 21 , wherein the notched portion is formed to be longer in the perpendicular direction than in the feed direction. 
     
     
         35 . The manufacturing apparatus for a vehicular arm component according to  claim 26 , further comprising:
 a forming portion configured to form, in a position that is on one side of the workpiece in a perpendicular direction perpendicular to the feed direction and where a hole into which a support shaft for supporting the vehicular arm component to a bracket is inserted is formed, a precursor hole, which is smaller than the hole, and form a positioning hole in a position that is on another side in the perpendicular direction;   a first cutting portion configured to cut out a first end at one end of a boundary portion between the adjacent workpieces in the perpendicular direction to form a notched portion and cut out a first unnecessary portion that is provided on a side of the positioning hole facing the notched portion and follows a shape of the vehicular arm component;   a second cutting portion configured to form the hole in a vicinity of a position where the precursor hole is formed by the forming portion and cut out a second end that is provided at another end in the perpendicular direction and follows a shape of the vehicular arm component; and   a third cutting portion configured to cut out a second unnecessary portion that surrounds the positioning hole, is provided between the first unnecessary portion and the second end, and follows a shape of the vehicular arm component.