Method and fixture for detecting flatness of metal piece

A technology for metal parts and flatness, which is applied to electromagnetic measuring devices, electrical/magnetic roughness/irregularity measurement, etc. The effect of convenience, improving detection efficiency and detection reliability

Active Publication Date: 2017-03-08
东莞华誉精密技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This detection method has the following disadvantages: it consumes a lot of manpower, is inconvenient to operate, and has low detection efficiency, and the segmented detection cannot completely cover the detected plane, which is prone to missed detection, and it is difficult to guarantee the reliability of detection.

Method used

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  • Method and fixture for detecting flatness of metal piece
  • Method and fixture for detecting flatness of metal piece
  • Method and fixture for detecting flatness of metal piece

Examples

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Embodiment Construction

[0027] For ease of understanding, the present invention will be further described below in conjunction with the accompanying drawings.

[0028] A jig for detecting the flatness of a metal piece provided by the present invention includes a power supply, a first plane and a second plane that are made of metal and are oppositely arranged, and are used to position the metal piece on the first plane and the second plane. Positioner in the middle of the plane;

[0029] When the metal piece is located between the first plane and the second plane, the distance between the first plane and the second plane is equal to the sum of the design thickness of the metal piece and the design flatness tolerance, and one pole of the power supply is electrically connected to the metal piece. The other pole is connected to two parallel detection branches, one of which is connected in series with the first alarm and the first plane, and the other detection branch is connected in series with the secon...

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Abstract

The invention provides a method and a fixture for detecting the flatness of a metal piece. The fixture is characterized by comprising a power supply (A), a first plane and a second plane made of metal and arranged oppositely, and a positioning piece for positioning the metal piece between the first plane and the second plane, wherein the metal piece is located between the first plane and the second plane, the distance between the first plane and the second plane is equal to the sum value between the metal piece design thickness and design flatness tolerance; one electrode of the power supply is electrically connected with the metal piece, and the other electrode is connected with two mutually-parallel detection branches; one detection branch is sequentially in serial connection with a first alarm (41) and the first plane, and the other one is sequentially in serial connection with a second alarm (42) and the second plane. The fixture is convenient and quick to operate, and the detection efficiency and the detection reliability can be improved.

Description

technical field [0001] The invention relates to the technical field of flatness detection, in particular to a method and fixture 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 test the flatness of the steel sheet of the front shell of the mobile phone, specifically, to check whether the flatness of the groove meets the control standards. [0003] At present, the method of testing the flatness of the steel sheet of the front shell of the mobile phone is usually to use a feeler gauge combined with a matching iron block to detect in sections. Detect the gap between the steel sheet of the front shell of the mobile phone and the iron block...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01B7/34
CPCG01B7/34
Inventor曹丽雄别林章
Owner东莞华誉精密技术有限公司