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A method of improving the positioning strength of the built-in fixture

A strength and fixture technology, applied in the field of automobile body-in-white, can solve the problems of insufficient positioning strength of built-in fixtures

Active Publication Date: 2022-03-22
CHINA FIRST AUTOMOBILE
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Problems solved by technology

[0003] The present invention provides a method for improving the positioning strength of the built-in fixture, which resolves the influence of the gravity of the side panel assembly on the strength of the flipping positioning pin by increasing the support unit of the side panel assembly through the floor clamp, and solves the problem of insufficient positioning strength of the existing built-in fixture The problem

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  • A method of improving the positioning strength of the built-in fixture
  • A method of improving the positioning strength of the built-in fixture
  • A method of improving the positioning strength of the built-in fixture

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Embodiment Construction

[0017] A method for improving the positioning strength of a built-in fixture, the method comprising the following steps:

[0018] Step 1. Set the fixed positions of the first support unit and the second support unit on both sides of the center of gravity of the side panel assembly, and select the support position within the range of 1 / 4 threshold to 1 / 3 threshold from the center of gravity on both sides of the center of gravity;

[0019] Step 2. Calculate the support force F1 of the first support unit and the support force F2 of the second support unit according to the fixed positions of the first support unit and the second support unit, and calculate the support force F1 of the first support unit and the support force F2 of the second support unit The support force F2 selects the cylinder and the pressure control valve required by the first support unit and the second support unit;

[0020] refer to figure 1 , the supporting force F1 of the first supporting unit and the sup...

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Abstract

The invention belongs to the technical field of automobile body-in-white, and specifically relates to a method for improving the positioning strength of a built-in fixture. The method includes the following steps: Step 1, setting fixed positions of the first support unit and the second support unit on both sides of the center of gravity of the side wall assembly; Step 2, designing and installing the first support unit and the second support unit; Step 3, Install the first support unit and the second support unit on site, measure the X, Y, and Z data of the profiling block in three coordinates, and adjust the first support unit and the second support unit to the theoretical position; step 4, combine the positioning of the side panel assembly Adjust the pressure control valves of the first support unit and the second support unit according to the variation of the pin load. The invention resolves the influence of the gravity of the side wall assembly on the strength of the turning positioning pin by adding the support unit of the side wall assembly through the floor clamp, and solves the problem of insufficient positioning strength of the existing built-in clamp.

Description

technical field [0001] The invention belongs to the technical field of automobile body-in-white, and specifically relates to a method for improving the positioning strength of a built-in fixture. Background technique [0002] There are two types of positioning methods for main assembly of body-in-white: built-in and external fixtures. In order to meet the needs of welding accessibility, many OEMs use built-in fixtures for positioning. For the positioning requirements of the side wall assembly, it is necessary to add a flip unit to the side wall positioning pin unit of the built-in fixture. The problem caused by the flip structure is that the strength of the positioning unit decreases, and the side wall positioning pin appears Z-down after being affected by the gravity of the side wall assembly. Shen phenomenon. Contents of the invention [0003] The present invention provides a method for improving the positioning strength of the built-in fixture, which resolves the influ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K37/04
CPCB23K37/0443
Inventor 周川川王子欣高建昊蔡金生刘洋谷昊李长松毛柏吉
Owner CHINA FIRST AUTOMOBILE
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