Checking fixture for vehicle frame longitudinal beam and longitudinal beam plate material

Abstract

The invention relates to the technical field of automobile manufacturing and discloses a vehicle frame longitudinal beam and longitudinal beam plate material checking fixture. The checking fixture comprises a mounting platform, a detection base, a positioning pin, a pressing rod and a movable pressing block, wherein the detection base is detachably arranged on the mounting platform, and reference blocks are arranged on the two sides of an upper end of the detection base; the positioning pin is embedded in the detection base, an upper end of the positioning pin protrudes out of an upper surface of the detection base, the pressing rod is inserted into the positioning pin, and the movable pressing block is detachably arranged at an upper end of the pressing rod. According to the checking fixture for the frame longitudinal beam and the longitudinal beam plate material, the frame longitudinal beam or the plate material of the frame longitudinal beam can be effectively positioned, meanwhile, the three-dimensional coordinate measuring instrument is adopted for measurement, manual measurement errors can be reduced, the automation degree is improved, a measurement coordinate system is established, and measurement precision is improved.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to a vehicle frame longitudinal beam and a inspection tool for the longitudinal beam plate. Background technique [0002] The manufacturing accuracy of a commercial vehicle frame is an important factor affecting various performances of a vehicle (such as stability, economy, ride comfort, etc.), and it is also an extremely important factor that affects the correct and convenient assembly of the final assembly at one time. The key to the manufacturing accuracy of the frame is the manufacturing accuracy of the frame longitudinal beam and its longitudinal beam sheet. The level of its manufacturing accuracy requires accurate measurement and reasonable evaluation of its main manufacturing accuracy parameters (such as hole diameter, hole distance, hole edge distance, hole position, camber and turtle back degree). At the same time, it can also be determined according to the...

AI Technical Summary

Problems solved by technology

[0003] 1. The frame longitudinal beam and its sheet metal are not fixed, which may cause displacement during the measurement process, thus affecting the measurement accuracy;

[0004] 2. Use ordinary measuring tools to measure, and the measuring tools have a great influence on the measurement results, increasing the measurement error;

[0005] 3. Manual measurement has a great influence on the measurement results, increasing measurement errors, and the degree of automation and intelligence is low;

[0006] 4. The flatness of the support surface of the ordinary platform or support frame, the deflection of the sheet metal, etc. will affect the measurement results, resulting in inaccurate measurement;

[0007] 5. It is impossible to establish accurate measurement coordinates, and it is impossible to measure the frame longitudinal beam and its sheet as a whole, so that it is impossible to accurately evaluate the overall accuracy

Images