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Manufacturing method of door hinge

A manufacturing method and hinge technology, which is applied in the field of hinges, can solve the problems of unsteady discharge, cracks and folding, etc., and achieve the effect of simple process, guaranteed consistency and convenient operation

Active Publication Date: 2022-07-12
沈阳中钛装备制造有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the bending process is prone to defects such as unsteady discharge, cracks and folds.

Method used

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Embodiment Construction

[0039] In order to make the purpose, technical solutions and advantages of the invention clearer, the technical solutions in the invention will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the invention, not all of them. Example. Based on the embodiments in the invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the invention.

[0040] In the description of the embodiments of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper" and "lower" are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present invention. and simplify the description, rather than indicating or implying that the device or element referred to must have a particular ...

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Abstract

The invention relates to the field of hinges, and provides a manufacturing method of a hatch door hinge. The method includes the following steps: pre-preparing a pre-forging die: respectively punching the surfaces of the pre-forging upper die and the pre-forging lower die to form a pre-forging cavity, the pre-forging cavity includes two center-symmetric L-shaped cavities, two L-shaped cavities The long side end of one of the L-shaped cavities abuts on the short side of the other L-shaped cavity; the final forging die is prepared in advance: according to the shape of the hatch door hinge, the final forging die and the final forging are respectively The surface of the lower die is punched to form a hinge cavity; after the titanium alloy round bar is heated and kept warm, it is forged and elongated into a billet; the billet is placed in the pre-forging cavity for forging to obtain a pre-forged part; the pre-forged piece is cut into two L Shaped pre-forged blanks; place the pre-forged blanks in the hinge cavity for pressing. The invention not only omits the bending process, but also avoids folding and cracks caused by mutual extrusion of the parts of the blank on both sides of the corner of the L-shaped cavity during the pre-forging process.

Description

technical field [0001] The invention relates to the technical field of hinges, in particular to a manufacturing method of a hatch door hinge. Background technique [0002] At present, the door hinge manufacturing process generally includes blanking, bending, pre-forging, final forging and other processes. Among them, the bending process is prone to defects such as unstable discharge, cracks and folding. Especially for the billet made of titanium alloy, since the production temperature of titanium alloy is 900 ℃ ~ 1000 ℃, its deformation resistance is greater than that of steel, so the billet made of titanium alloy is very prone to folds and cracks during the bending process. SUMMARY OF THE INVENTION [0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies. To this end, the present invention proposes a method for manufacturing a hatch door hinge, so as to simplify the process and avoid the occurr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21K13/02B21J5/00B21J5/02B21J13/02
CPCB21K13/02B21J5/002B21J5/02B21J13/02
Inventor 李志杰钟军陈妍孙建月
Owner 沈阳中钛装备制造有限公司
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