An Effective Measuring Device for Accuracy Adjustment and Control of Welded Car Body

A technology of measuring device and car body, applied in the direction of measuring device, mechanical measuring device, using mechanical device, etc., can solve the problems of low measurement accuracy, high measurement difficulty and high measurement cost, so as to ensure the accuracy of the car body, improve the accuracy of the car body, and improve the The effect of fitting precision

Active Publication Date: 2021-08-27
NANJING JINLONG NEW ENERGY AUTOMOBILE RES INST
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Compared with passenger cars, the bus body has a large body size, and the stamping parts are not complete process parts, so the precision of the stamping parts is low, the number of welding molds is small, the body data, parts and component assembly measurement data are less, and it is also difficult to measure Large, low measurement accuracy, low measurement efficiency, high measurement cost
Due to the large size of the bus body, the measurement range of calipers and height rulers is not enough, even the portable three-coordinate measurement range cannot meet the needs of the body and fixture positioning point measurement

Method used

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  • An Effective Measuring Device for Accuracy Adjustment and Control of Welded Car Body
  • An Effective Measuring Device for Accuracy Adjustment and Control of Welded Car Body
  • An Effective Measuring Device for Accuracy Adjustment and Control of Welded Car Body

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] In view of the length × width × height of the passenger car body size is greater than 8000 × 2500 × 2500, so when the body is assembled and welded, there must be super large welding fixtures to ensure the body size, but this large size is difficult to measure by conventional methods. In order to solve this problem, the over-measurement datum is established by using the datum of the large fixture itself (BASE board), a detachable datum measurement datum is designed on the main datum of the fixture, and a detachable and Fixed datum of measurement.

[0017] On the large fixture installation reference plane, the positioning reference and measurement reference plane of the lower part of the car body can be accurately measured by means of a large three-coordinate measurement and or laser tracker (especially the coordinate hole of the fixture measurement reference plan...

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Abstract

The invention discloses an effective measuring device for precision adjustment and control of a welded vehicle body, comprising a measuring base plate, a measuring base workbench, a left turning platform measuring plate, an auxiliary measuring beam and a right turning platform measuring plate, the measuring base The workbench is located above the base plate of the measurement base, and four reference holes are provided at the four corners of the base plate of the measurement base. The two are fixedly connected by pins, the measuring base workbench and the measuring reference base plate are fixedly connected by bolts, and the measuring board of the left turning platform and the measuring plate of the right turning platform are fixedly connected with the fixture turning platform through the bolt holes provided by themselves. The above-mentioned auxiliary measuring beam is fixedly connected to the measuring plate of the left turning platform and the measuring plate of the right turning platform through the long holes provided at its two ends.

Description

Technical field: [0001] The invention relates to an effective measuring device for precision adjustment and control of a welded vehicle body. Background technique: [0002] Existing bus body precision control technology, in addition to the accuracy of sheet metal parts, basically only uses welding molds to control the precision of the body during the tailor welding process of major assemblies, mainly through positioning pins and positioning blocks. In the modulation process, the trial assembly method is mostly used for repeated debugging, and finally the accuracy of the body is guaranteed. Because of the lack of effective measurement data to support the debugging of the accuracy of the body, the stability and consistency of the body are always difficult to guarantee. In the prior art, [0003] Compared with passenger cars, the bus body has a large body size, and the stamping parts are not complete process parts, so the precision of the stamping parts is low, the number of w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/00
CPCG01B5/00G01B5/0025G01B5/0037
Inventor 顾新苗张正刘晋陈志新吴晖晖
Owner NANJING JINLONG NEW ENERGY AUTOMOBILE RES INST
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