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Processing method of sheet metal

A processing method and metal plate technology, applied in metal processing equipment, forming tools, manufacturing tools, etc., can solve the problem of easy reduction of plate thickness, and achieve the effect of inhibiting the reduction of plate thickness

Active Publication Date: 2021-01-01
KANEMITSU KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the invention disclosed in Patent Document 1, when adjacent recesses are formed on a metal plate, there is a problem that the plate thickness between these adjacent recesses tends to decrease.

Method used

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  • Processing method of sheet metal
  • Processing method of sheet metal
  • Processing method of sheet metal

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Experimental program
Comparison scheme
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Embodiment Construction

[0044] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same components are denoted by the same reference numerals, and their names and functions are the same, so that detailed descriptions of these will not be repeated.

[0045] [Structure of Press Machine]

[0046] A press machine not shown in the present embodiment is the same as a known press machine. Therefore, repeated detailed description is not made here. The die of this embodiment is attached to the press machine of this embodiment. The processing method of the metal plate 200 of this embodiment is implemented by this press machine. The mold of this embodiment will be described later.

[0047] [Processing method of metal plate]

[0048] figure 1 It is a process chart which shows the processing method of the metal plate 200 of this embodiment. figure 2 It is a conceptual diagram which shows the processing state of ...

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PUM

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Abstract

The present invention relates to a method of processing a metal plate capable of suppressing reduction in plate thickness between adjacent recesses when adjacent recesses are formed on the metal plate. The processing method includes: forming a concave part on a curved surface ( S120 ), protruding ( S122 ), and shaping and dividing ( S124 ). Curved Surface Formation Depression forming step ( S120 ) is a step of forming a depression on the metal plate. The outer edge of the concave part is formed into a curved surface, the side part is in the shape of a truncated cone, and the bottom part is circular. In the protruding step ( S122 ), a part from the bottom to the side of the depressed portion is protruded toward the inside of the depressed portion, and the side portion of the depressed portion is brought closer to the center of the depressed portion. The shaping and dividing step (S124) is to form the concave portion formed in the concave portion forming step (S120) on the curved surface by shaping the portion protruding toward the inside of the concave portion in the protruding step (S122) and the outer edge of the concave portion. A process of dividing into a plurality of adjacent recess groups.

Description

technical field [0001] The present invention relates to a method of processing a metal plate. Background technique [0002] Patent Document 1 discloses a method of forming a substrate. In this molding method, first, a material having a predetermined thickness as a base material of a substrate is cut into a circular flat plate shape. The circular material is then subjected to drawing (one-time drawing process). This drawing is realized by press forming by a known method. In this press forming, a forming die and a forming punch having an outer diameter slightly smaller than the inner diameter of the forming die are used. The billet diameter of the material after the primary drawing process is drawn to about 60% of the original outer diameter. After that, in the same manner as above, the inner diameter of the forming die and the outer diameter of the forming punch were sequentially reduced, and the drawing process was repeated. Then, the radially outer peripheral side of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/02B21D37/10
CPCB21D22/02B21D37/10B21D22/04B21D22/24B21D51/02B21D22/26
Inventor 原田国广萩野晓史垣内健
Owner KANEMITSU KK