Welding clamp for assembling floor and battery box and manufacturing method

A technology for welding fixtures and battery boxes, which is applied to auxiliary devices, manufacturing tools, welding equipment, etc., can solve problems such as inaccurate structure of mounting holes, interference, and misalignment of two longitudinal beams before and after, so as to ensure efficiency and effect , Simplify cumbersome steps and improve welding quality

Inactive Publication Date: 2011-05-25
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are the following deficiencies in the production process of the left and right longitudinal beams of the newly produced parts of electric vehicles: the nut hole opening is inaccurate when a longitudinal beam is made separately; the two longitudinal beams are sometimes not on the same plane when the body is welded; When welding on the body, there is a phenomenon that the front and rear steps of the two longitudinal beams are misaligned
[0003] The problem of structural interference caused by the inaccurate fit between the battery box of a pure electric vehicle and the installation hole on the floor has always been a major problem restricting work

Method used

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  • Welding clamp for assembling floor and battery box and manufacturing method
  • Welding clamp for assembling floor and battery box and manufacturing method

Examples

Experimental program
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Effect test

Embodiment 1

[0021] A method for manufacturing a welding jig for assembling a floor and a battery box,

[0022] It includes the following steps: first, weld a frame with a 40*60 rectangular tube, and the frame is basically the same as the position and size of the overall body floor stringer;

[0023] Weld a 10-20mm thick plate at the corresponding position of the battery box installation hole on the longitudinal beam;

[0024] Then cut four cross-section profiling positioning blocks according to the cross-sectional view of the external dimensions of the longitudinal beam; (as shown in the positioning block part)

[0025] Then, the welded skeleton is milled by CNC milling, and the surface of several welded thick plates is milled and drilled, so that the surface is on the same plane as the lower plane of the longitudinal beam, and the holes are opposite to the mounting holes of the battery box. The size is the same; (as shown in the picture)

[0026] Finally, weld the four cross-section pr...

Embodiment 2

[0029] A method for manufacturing a welding jig for assembling a floor and a battery box,

[0030] It includes the following steps: First, weld a skeleton with a 40*60 rectangular tube, the skeleton and the overall body floor longitudinal beam position and size are basically the same (the position and size of the body floor longitudinal beam depends on a certain model)

[0031] Weld a 10-20mm thick plate at the corresponding position of the battery box installation hole on the longitudinal beam; (as shown in the figure, the box part corresponding to the sub-hole position is the welding area of ​​the thick plate)

[0032] Then cut four section profiling positioning blocks according to the cross-sectional view of the external dimensions of the longitudinal beam; (the positioning block part in the figure)

[0033] Then, the welded skeleton is milled by CNC milling, and the surface of several welded thick plates is milled and drilled, so that the surface is on the same plane as th...

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Abstract

The invention discloses a welding clamp for assembling a floor and a battery box and a manufacturing method, and belongs to the technical field of electric vehicles. The method comprises the following steps of: welding a framework with basically same size as the position of a whole body floor longitudinal beam by using 40*60 rectangular tubes, welding a plate with thickness of 10 to 20 millimeters at the corresponding position of a battery box mounting hole on the longitudinal beam, cutting four section copying blocks according to a section graph of the external size of the longitudinal beam, then flatly milling and drilling the surfaces of a plurality of welded thick plates on the welded framework in a numerical control milling form to make the surfaces of the thick plates on a plane and make holes and battery box mounting hole data consistent, and finally welding the four section copying blocks on the framework at the corresponding positions of the single longitudinal beam as far as possible to obtain the welding clamp for assembling the floor and the battery box.

Description

technical field [0001] The invention relates to a welding jig for assembling a floor and a battery box and a manufacturing method thereof, belonging to the technical field of electric vehicles. Background technique [0002] The electric vehicle has the following deficiencies in the production process of the left and right longitudinal beams of the newly produced parts: the nut hole opening is inaccurate when making a single longitudinal beam; the two longitudinal beams are sometimes not on the same plane when the body is welded; When the body is assembled and welded, there is a phenomenon that the front and rear steps of the two longitudinal beams are misaligned. [0003] The problem of structural interference caused by the inaccurate fit between the battery box of a pure electric vehicle and the installation hole on the floor has always been a major problem restricting work. Design a welding jig for floor reconstruction and battery box assembly. During welding, the size re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K37/04B23P15/00B23K31/02
Inventor 陈维荣
Owner BEIJING ELECTRIC VEHICLE
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