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Opening method

A technology for opening holes and hole diameters, which is applied in the directions of manufacturing tools, tangent devices, and tangent machines. Reduced weight and cost, high load-carrying capacity

Active Publication Date: 2021-01-26
CH AUTO TECH CORP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention proposes a hole opening method, aiming to solve the problem that the existing technology cannot effectively ensure the stable connection between the automotive aluminum alloy sheet metal parts and increase the weight and cost

Method used

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Embodiment Construction

[0021] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0022] see figure 1 , figure 1 It is a flow chart of the opening method provided by the embodiment of the present invention. The opening method comprises t...

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Abstract

The invention provides a method for opening a hole, which comprises the following steps: a positioning step, in which the position of a mounting hole to be opened is determined on a part to be opened; and a placing step, a groove is provided at the position corresponding to the opening hole The first mold is placed under the part to be opened, the groove corresponds to the position of the opening, and the shape of the groove matches the shape of the mounting hole; in the forming step, hydraulic pressure is applied to the opening position of the part to be opened. force to make the part to be opened to the groove, and apply external force to the side of the part to be opened to replenish the part until the shape of the concave part of the part to be opened matches the shape of the groove, thereby A groove hole with a preset wall thickness is formed in the recessed part of the piece to be drilled; in the tapping step, the inner wall of the groove hole is tapped to form a mounting hole. In the invention, the groove hole is formed by plastic deformation of the part to be opened, which effectively ensures the position accuracy and dimensional accuracy, has large installation torque, strong bearing capacity, and reduces weight and cost.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method for opening holes. Background technique [0002] With the increasingly stringent national laws and regulations on energy conservation and emission reduction, new energy vehicles, especially pure electric new energy vehicles, have become the preferred next-generation key development direction for OEMs due to their advantages of no fuel emissions. At this stage, cruising range is one of the main factors affecting customers' choice of new energy vehicles, which is mainly determined by the total energy of the battery and the weight of the vehicle. Limited by the existing battery technology, increasing the energy density of battery packs will reduce the safety of the vehicle. OEMs can only increase the number of battery packs under the premise of limiting the energy density of battery packs (regulations ≤ 120KWh / L). The cruising range, and the cruising range has a negati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D28/32B23G1/16
CPCB21D28/32B23G1/16
Inventor 王克坚李金龙
Owner CH AUTO TECH CORP CO LTD