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Sheet threaded hole drawing process

A processing technology and threaded hole technology, which is applied in the field of sheet threaded hole drawing processing technology, can solve the problems of inability to ensure the firmness of bolts or screws, short thread segments, etc., and achieve the effect of timely heat dissipation and improvement of bearing capacity.

Active Publication Date: 2022-07-15
重庆博顺电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to reduce the weight of the distribution box for easy handling, the thickness of the metal plate used in the distribution box is relatively thin, about 1-2mm. Because the plate usually needs to be provided with threaded holes to fix other parts, but because the plate is thicker Thin, the length of the threaded section of the threaded hole opened in this way is very short, which cannot guarantee the firmness of the bolt or screw installation. Therefore, our company has improved the processing technology of the threaded hole in response to the above problems.

Method used

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  • Sheet threaded hole drawing process
  • Sheet threaded hole drawing process
  • Sheet threaded hole drawing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1 is basically as attached figure 1 and figure 2 shown:

[0041] The plate threaded hole drawing process adopts a special mold for drawing hole processing. The special mold includes a pull-down mechanism and a cylindrical fixed mold 13. The pull-down mechanism includes a tie rod 10 and a pressure plate 11. The bottom of the pressure plate 11 is inverted Conical, the bottom of the tie rod 10 is fixed on the hydraulic equipment, the upper part of the tie rod 10 is provided with a shoulder, the middle of the pressure plate 11 is provided with a connecting hole, the diameter of the connecting hole is smaller than the diameter of the tie rod 10, and the top of the tie rod 10 passes through the connecting hole A locking nut 12 is threadedly connected, and the pressure plate 11 is fixed on the tie rod 10 through the locking nut 12 and the shaft shoulder.

[0042] A cylindrical cavity 14 is opened in the middle of the fixed mold 13 , and the bottom of the cylindrical...

Embodiment 2

[0048] Example 2 is basically as attached Figure 4 and Figure 5 shown:

[0049] The difference from Embodiment 1 is that a plurality of card grooves are evenly distributed on the hole wall of the sliding hole, balls 21 are rotatably connected in the card grooves, a part of the surface of the balls 21 is exposed to the card grooves, and the fixed mold 13 is also provided with a pair of balls. 21. A cooling mechanism for heat dissipation. In this embodiment, the cooling mechanism includes an annular circulation cavity 22 and a plurality of heat dissipation channels 23. One end of the plurality of heat dissipation channels 23 communicates with the circulation cavity 22, and the other end communicates with each card slot. The bottom of 13 is provided with an oil inlet 24 and an oil outlet 25 that communicate with the circulation cavity 22 , and the oil inlet 24 and the oil outlet 25 are symmetrically arranged relative to the sliding cavity 18 .

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Abstract

The invention relates to the technical field of hole machining, and specifically discloses a process for drawing a threaded hole of a plate. A special mold is used, including a pull-down mechanism and a fixed mold. There is an opening, the turntable and the fixed die are connected by thread, the bottom of the cylindrical cavity is provided with a sliding hole, the pull-down mechanism includes a pull rod and a pressure plate, the pressure plate is detachably connected to the top of the pull rod, and the pull rod is slidably connected in the sliding hole; including The following steps: pre-open small holes on the metal plate, adjust the distance between the turntable and the fixed die, connect the pull rod through the small hole to the pressure plate, and connect the bottom of the pull rod to the hydraulic equipment; the hydraulic equipment drives the pull rod to move down, and the metal plate Deformation is generated into the cylindrical cavity to form a stretching hole; the draw rod and the pressure plate are taken out, and the inner wall of the stretching hole is tapped. The depth of the threaded hole obtained by adopting the technical solution of the patent is much larger than the thickness of the metal plate, which improves the firmness of the connecting piece in the threaded hole.

Description

technical field [0001] The invention relates to the technical field of hole processing, in particular to a drawing processing technology for a threaded hole of a plate. Background technique [0002] High-voltage distribution box refers to electrical products used for on-off, control or protection in the power generation, transmission, distribution, power conversion and consumption of the power system, with a voltage level of 3.6kV ~ 550kV, mainly including high-voltage circuit breakers, high-voltage Isolation switch and grounding switch, high-voltage automatic reclosing and sectionalizer and high-voltage switchgear and other categories. [0003] In order to reduce the weight of the distribution box and facilitate handling, the thickness of the metal plates used in the distribution box is relatively thin, about 1 to 2 mm. Because the plate usually needs to have threaded holes to fix other components, but because the plate is relatively thin The thread length of the threaded ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B23Q11/12
CPCB23P15/00B23Q11/126
Inventor 何鸿辉
Owner 重庆博顺电气有限公司
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