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Bending forming method for door frame of security door

A technology of bending and forming, anti-theft door, applied in the field of sheet metal bending and forming, can solve the problems of cumbersome processing procedures, low processing accuracy, frequent replacement of molds, etc., to achieve simple operation, improve production efficiency, and avoid the effect of changing molds

Active Publication Date: 2015-04-01
MAANSHAN HENGLIDA MACHINE BLADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the disadvantages of using conventional bending molds for the key structure of the anti-theft door frame in the prior art, such as low machining accuracy, cumbersome processing procedures, and frequent mold replacement, and to provide a bending and forming method for the anti-theft door frame; The present invention only needs to use 2 sets of molds and carry out 4 processing procedures to complete the bending and forming of the key structure of the anti-theft door frame, with high processing efficiency and high processing precision, which solves the troubles of anti-theft door manufacturers

Method used

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  • Bending forming method for door frame of security door
  • Bending forming method for door frame of security door
  • Bending forming method for door frame of security door

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] see figure 1 , a special mold for the anti-theft door frame of the present embodiment includes 2 sets of molds, wherein the first set of molds includes a first upper mold 11 and a first lower mold 21, the upper part of the first upper mold 11 is provided with a handle, the second The bottom of a upper die 11 is provided with a V-shaped die tip 111, and the upper part of the first lower die 21 is provided with a first lower die V-shaped notch 211 and a second lower die V-shaped groove that cooperate with the above-mentioned V-shaped die tip 111. Mouth 212. The first set of mold mainly utilizes the cooperation of the V-shaped mold tip 111, the V-shaped notch 211 of the first lower mold, and the V-shaped notch 212 of the second lower mold to complete the preliminary molding of the key structure of the anti-theft door frame.

[0038] see image 3 , the second set of molds in this embodiment includes a second upper mold 12, a second lower mold 22, a lower mold base 3 and a ...

Embodiment 2

[0055] The bending forming method of a security door frame of this embodiment is basically the same as that of Embodiment 1, except that the spring holes of this embodiment are distributed at equal intervals, and the number is 8 per 1 meter. The specific process of processing the second set of molds in this embodiment is:

[0056] 1. Raw material preparation: The material is 42CrMo, and the mold is made of forged blank. The components of the forged blank are calculated by weight percentage: carbon 0.39, silicon ≤ 0.40, manganese 0.70, allowable residual content of sulfur ≤ 0.035, and allowable residual content of phosphorus ≤0.035, chromium 1.10, molybdenum 0.16, and the balance is iron.

[0057] The forging blank is elongated and forged, and the forging ratio F1 / F0 is 1:4, where: F0 is the cross-sectional area of ​​the blank before forging, and F1 is the cross-sectional area of ​​the blank after forging.

[0058] 2. After forging in Step 1, anneal the forged blank: first put...

Embodiment 3

[0062] The bending forming method of a security door frame of this embodiment is basically the same as that of Embodiment 1, except that the spring holes of this embodiment are distributed at equal intervals, and the number is 7 per 1 meter. The specific process of processing the second set of molds in this embodiment is:

[0063] 1. Raw material preparation: the material is 42CrMo, and the mold is made of forged blank. The components of the forged blank are calculated by weight percentage: carbon 0.38, silicon ≤ 0.38, manganese 0.60, sulfur residual content ≤ 0.034, phosphorus residual content ≤0.033, chromium 0.90, molybdenum 0.15, and the balance is iron.

[0064] The forging blank is elongated and forged, and the forging ratio F1 / F0 is 1:4, where: F0 is the cross-sectional area of ​​the blank before forging, and F1 is the cross-sectional area of ​​the blank after forging.

[0065] 2. After forging in step 1, anneal the forged blank: first put the forged blank into a heat ...

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Abstract

The invention discloses a bending forming method for a door frame of a security door, and belongs to the technical field of bending forming of boards. The bending forming method comprises the steps of 1, controlling a first upper die, and folding a second door frame section and a third door frame section to form a right angle; 2, controlling a V-shaped point of the first upper die to be matched with a V-shaped notch in the upper part of a first lower die, and folding the first door frame section and the second door frame section to form an acute angle; 3, controlling the V-shaped point of the first upper die to be matched with the V-shaped notch of a second lower die, in the upper part of the first lower die, and folding a third door frame section and a fourth door frame section to form another acute angle; 4, controlling the V-shaped notch in a second upper die to be matched with an angle edge in the upper part of the second lower die, folding the third door frame section and the fourth door frame section to form another right angle, and flattening the acute angle between the first door frame section and the second door frame section. According to the bending forming method for the door frame of the security door, the traditional three sets of dies and six processes are decreased to be two sets of dies and four processes, and therefore, the dies can be avoided frequent replacing during bending forming, and as a result, the production efficiency of a bending machine can be greatly raised.

Description

technical field [0001] The invention relates to the technical field of plate bending and forming, and more specifically, relates to a bending and forming method of a door frame of an anti-theft door. Background technique [0002] The bending machine mold is divided into the upper mold, the lower mold and the mold base of the bending machine. It is a mold used for sheet metal bending and separation. The mold for forming has a cavity, and the mold for separation has a cutting edge. It mainly realizes the processing of the shape of the workpiece through the change of the physical state of the formed material. Under the action of the pressure of the bending machine, the sheets of various thicknesses and materials become workpieces with specific shapes and sizes. Bending machine molds are widely used in sheet metal bending in sheet metal, aerospace, automobile manufacturing, hardware manufacturing, stainless steel plate, home appliance industry and other sheet metal industries. ...

Claims

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Application Information

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IPC IPC(8): B21D5/06B21D37/10B21D37/12
CPCB21D5/06B21D37/10
Inventor 张增明张德进谢敏张荣强施亚玲陶小冬
Owner MAANSHAN HENGLIDA MACHINE BLADE