Manufacturing apparatus and manufacturing method for hat-shaped section component with curved projection portion

A manufacturing device and bending technology, which is applied to the manufacturing device and manufacturing field of hat-shaped cross-section parts with curved convex parts, can solve the problems of deviation in the length direction of the predetermined part of the top plate, cracks in the top plate, etc., and achieve the purpose of suppressing the reduction of productivity and the occurrence of cracks , to ensure the effect of strength

Active Publication Date: 2021-03-16
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, it is known that in the case of manufacturing a hat-shaped section member having a curved convex portion bent in the longitudinal direction, if the predetermined portion of the top plate is pressed without a pad (pad) to avoid displacement (slip) in the longitudinal direction of the workpiece, Then, in the process of stretch flange forming (forming the vertical wall between the top plate and the flange), the predetermined portion of the top plate is shifted in the length direction, thereby causing cracks in the top plate

Method used

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  • Manufacturing apparatus and manufacturing method for hat-shaped section component with curved projection portion
  • Manufacturing apparatus and manufacturing method for hat-shaped section component with curved projection portion
  • Manufacturing apparatus and manufacturing method for hat-shaped section component with curved projection portion

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Embodiment Construction

[0044] Hereinafter, the form for implementing this invention is demonstrated based on drawing.

[0045] figure 1 is a perspective view schematically showing a hat-shaped cross-sectional member 80 manufactured by the manufacturing apparatus 1 and the manufacturing method according to the present embodiment, figure 2 It is a side view schematically showing the relationship between the hat-shaped cross-sectional member 80 and the pad 20 . The hat-shaped cross-section member 80 is prepared by using the manufacturing device 1 described later to form a flat workpiece 70 (refer to figure 2 ) is manufactured by performing press processing (drawing processing).

[0046] Such as figure 1 As shown, the hat-shaped cross-sectional member 80 has: a top plate 81 having a curved convex portion 87 protruding upward in a longitudinal direction; 83; and a pair of flanges 85 respectively extending outward in the width direction from the lower ends of the pair of vertical walls 83; Inverted...

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PUM

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Abstract

Provided is a manufacturing apparatus for manufacturing a hat-shaped section component including a curved projection portion such that a to-become-top-plate portion is pressed by a punch in a state where a to-become-flange portion is sandwiched between a die and a holder. The manufacturing apparatus includes the punch having a first mold surface including a curved projection portion mold surface,the holder, and the die having a fourth mold surface facing the first mold surface. An opening is formed in a part, of the fourth mold surface, that corresponds to the curved projection portion mold surface. The manufacturing apparatus includes a pad provided in the die and having a fifth mold surface facing the curved projection portion mold surface, the pad being configured to be relatively movable upward against downward biasing force so that the fifth mold surface becomes flush with the fourth mold surface.

Description

technical field [0001] The present invention relates to a manufacturing device and a manufacturing method of a member having a hat-shaped cross-section (hereinafter also referred to as a “hat-shaped cross-sectional member”) having a curved convex portion bent in the longitudinal direction. Background technique [0002] In the case of manufacturing hat-shaped cross-section parts used for vehicle frame members and the like, many manufacturing devices equipped with dies, punches, holders, etc. Deep processing) is a cross-sectional hat shape. [0003] More specifically, in the case of manufacturing hat-shaped cross-section members, many manufacturing apparatuses are prepared as dies, including a die with an opening formed therein, a punch disposed opposite to the opening, and a holder disposed opposite to the die. In this way, the intended flange portion (the portion to be the flange after forming in the workpiece) is sandwiched by the die and the holder on both outer sides in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/26B21D24/00B21D24/06B21D24/08B21D45/08
CPCB21D22/26B21D24/00B21D24/06B21D24/08B21D45/08B21D24/04B21D5/06B21D22/22B21D22/025
Inventor 野尻勲
Owner TOYOTA JIDOSHA KK
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