Test tool for inner-high-pressure-shaped complicated automobile tube beams

Abstract

The invention discloses a test tool for inner-high-pressure-shaped complicated automobile tube beams. The test tool is capable of detecting ordinary regular pipe fittings, breaking through limitation of conventional test tools by providing a plurality of 'earthworm surface' test tools which coincide with the pipe fittings in dimension, and detecting complicated automobile pipe fittings with shaped surfaces. Furthermore, the test tool can be popularized and applied to detection of any workpiece with a complicated shaped surface. In addition, the test tool disclosed by the invention is capable of detecting the trend, the length, the verticality and the location degree of the pipe fitting. The test tool has the characteristic that the vertical distance from any point to the pipe fitting is equal, so that a weld bead can also be detected; the welding quality is ensured; in addition, the resilience of an elbow pipe can also be detected; and the resilience value can be calculated as long as the difference value between a clearance and the vertical distance between the pipe fitting and the test tool is measured, and therefore, the test tool is suitable for being used as an evaluation tool for elbow pipe quality at a bending test stage.

Description

technical field [0001] The invention relates to the technical field of inspection fixtures for complex formed automobile pipes, in particular to an inspection fixture for complex automobile pipe beams formed by internal high pressure. Background technique [0002] Complex formed pipe fittings are widely used in the technical field of auto parts. During the forming process of the pipe, the pipe will be subjected to internal and external stress to form a complex pipe shape. Moreover, after the fixture is removed, the bending radius and bending of the pipe Angle and shape surface will undergo elastic recovery, which may cause the shape and size of the product to be inconsistent with the designed shape and size. Therefore, after the pipe fittings are processed, they need to be inspected to ensure the forming quality. [0003] In the prior art, generally through the forming groove inspection tool (such as figure 1 shown) or U-shaped pillar checker (such as figure 2 shown) to i...

AI Technical Summary

Problems solved by technology

If the parts produced by two manufacturers are welded, theoretically speaking, the distance between the weld bead and the two parts should be equal, but if the profile of one part does not meet the design size, then even if the other part is If it fully conforms to the design size, its welding quality will also have problems. For this point, it is difficult to detect it with the inspection tools of the existing technology

[0005] Of course, at present, the method of three-coordinate detection can be used for such as image 3 The complex pipe fittings shown are tested, but the cost of three-coordinate inspection is very high. At the same time, the forming process of pipe fittings is a multi-process cold forming process. It is difficult to ensure that the dimensions of the two processed pipe fittings are exactly the same, which requires 100% inspection is performed on each pipe fitting individually, therefore, the method of three-coordinate inspection is not suitable for inspection of large quantities of formed products

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