Fixture for detecting flatness of metal part

Abstract

The invention discloses a fixture for detecting flatness of a metal part. The fixture comprises a fixture body composed of an operation platform arranged at the bottom of the fixture body, a second detection plate arranged at the top of the operation platform and a first detection plate arranged at the top of the second detection plate. The fixture is provided with an ST-200 strip type level metercapable of calibrating the horizontal plane and accurately measuring an offset angle. At the same time, the fixture is provided with a probe and TSL-260 infrared distance measurement sensor performing detection simultaneously, so that detection accuracy is greatly improved and the reliability is also greatly improved. The fixture is also provided with a sliding hollow box. Through the sliding ofa sliding plate in the sliding box, the probe can transversely move to detect, the movement is convenient. The fixture is also provided with a Y2-90L-4 electric motor and a hydraulic lever which can push the sliding hollow box to slide easily in the sliding groove, so that the probe can move laterally to detect and further the detection accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of detection of metal parts, in particular to a jig for detecting the flatness of metal parts. Background technique [0002] The steel sheet of the front shell of the mobile phone is used to install the touch screen. There is a flat groove in the middle of the steel sheet of the front shell of the mobile phone, and there is a circle of flanging called the reference plane around the groove. In actual production Among them, it is necessary to detect the flatness of the steel sheet of the front shell of the mobile phone. Specifically, it refers to whether the flatness of the detection groove meets the control standards. The matching iron block is tested in sections. In each section, firstly put the iron block close to the surface of the steel sheet of the front shell of the mobile phone, and then use a feeler gauge to detect the gap between the steel sheet of the front shell of the mobile phone and the iron blo...

AI Technical Summary

Problems solved by technology

[0002] The steel sheet of the front shell of the mobile phone is used to install the touch screen. There is a flat groove in the middle of the steel sheet of the front shell of the mobile phone, and there is a circle of flanging called the reference plane around the groove. In actual production Among them, it is necessary to detect the flatness of the steel sheet of the front shell of the mobile phone. Specifically, it refers to whether the flatness of the detection groove meets the control standards. The matching iron block is tested in sections. In each section, firstly put the iron block close to the surface of the steel sheet of the front shell of the mobile phone, and then use a feeler gauge to detect the gap between the steel sheet of the front shell of the mobile phone and the iron block. This method detects The reliability is poor. With the development of science and technology, there are more and more fixtures for testing flatness, and their functions are becoming more and more powerful. Among them, there are more fixtures for testing the flatness of metal parts.

[0003] However, most of the existing fixtures do not calibrate the horizontal plane, which leads to errors in the detection. At the same time, the feeler gauge is used for detection, resulting in poor detection reliability, and the detection tool is very inconvenient to move.

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