Comprehensive checking tool capable of detecting true position of elliptical hole

Abstract

The invention discloses a comprehensive checking tool capable of detecting a true position of an elliptical hole. The comprehensive checking tool comprises a bearing base; the bearing base is provided with a location holding device, an elliptical hole measuring device and a round hole measuring device. The invention has the following beneficial effects: 1, the true positions of multiple holes canbe detected, the speed is greatly improved as being compared with three coordinates, and the comprehensive checking tool can meet the requirements of production field large-scale detection and improve the economic efficiency; 2, the comprehensive checking tool can simulate assembly, prevent the high-precision three coordinates from misjudging a product which has slight size over tolerance and fully qualified assembly; 3, comprehensive checking tool can detect the true position of the elliptical hole, has reasonable structural design, and can ensure high-precision detection; 4, the comprehensive checking tool adopts a keep-space trough, thus improving the measurement precision, reducing abrasion of a screw lead part and a square groove and improving the service life of a gauge rod; and 5, the comprehensive checking tool adopts a stroke threaded pin bolt, thereby having simple detection operation, preventing the gauge rod from dropping off, reducing the handling mark of a measuring headand saving the cost.

Description

technical field [0001] The invention relates to a checking tool, which belongs to the technical field of measuring devices, in particular to a comprehensive checking tool capable of detecting the position degree of an elliptical hole aimed at the position degree of an automobile product. Background technique [0002] With the continuous development of automobile technology, the requirements for manufacturing quality are getting higher and higher, and in terms of quality control, instrument testing shoulders a heavy responsibility. In mass production, when some workpieces need to be 100% inspected, efficiency and precision are even more contradictory conflicts and challenges. This case is related to the detection of the position degree of the hole of the automobile workpiece, especially there is an elliptical hole on the workpiece, and its position detection requirements are high. In the prior art, the method of detecting the position of holes mainly uses three-coordinates. ...

AI Technical Summary

Problems solved by technology

In the prior art, the method of detecting the position of the hole mainly uses three coordinates. Although the three coordinates have high precision, they are expensive and the detection speed is too slow to meet the requirements of mass production and full inspection, and it is impossible to perform simulated assembly. There will be a phenomenon that the three-coordinate coordinate measurement is slightly out of tolerance but actually completely conforms to the assembly, resulting in misjudgment and waste of production; on the other hand, there are generally multiple holes on the workpiece, and sometimes the accuracy requirements for the hole position are also different. , such as the unconventional elliptical hole mentioned in this case requires higher precision than other holes, and the measuring rod is required to ensure that the height does not rotate

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