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Method for testing gravity center of mechanical part

A technology of mechanical parts and testing methods, which is applied in the field of testing the center of gravity of mechanical parts, can solve the problems of draft angle error, loss of reference meaning, influence of rotating machinery dynamic balance, etc., and achieve the effect of an effective solution

Active Publication Date: 2020-05-29
NANJING ANKE MEDICAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the detailed design process of mechanical parts, the mass and center of gravity coordinates of the parts can be tested by setting the density through 3D software, but it is more difficult to test the coordinates of the center of gravity of the parts that have been processed, especially for Due to the processing technology, there may be some differences between the actual cast parts and the parts designed in the 3D software, such as some casting fillets, draft angles, etc. error, then the coordinates of the center of gravity of the processed parts are inconsistent with the values ​​measured in the theoretical three-dimensional software, so the theoretical values ​​lose their reference significance, and if these parts are installed on some rotating machinery, it will affect the dynamic balance of the rotating machinery It will have a relatively large impact, so it is particularly important to test the real coordinate values ​​of the parts

Method used

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  • Method for testing gravity center of mechanical part

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Embodiment Construction

[0047] The present invention will be further explained below in conjunction with the accompanying drawings.

[0048] A method for testing the center of gravity of mechanical parts of the present invention comprises the following steps:

[0049] 1) if figure 1 As shown, the test platform is padded with three support columns of the same height on the cast iron platform. Several threaded holes are arranged in a rectangular array on the test platform. There are several lifting rings around the test platform for lifting and shipping the test platform. The fixed tooling is installed on the test platform, and the sensor A, sensor B and sensor C are respectively installed on the lower surface of the test platform close to the edge. The connection between the sensor A, sensor B and sensor C forms a triangle, and the sensors are connected to the data acquisition through the amplifier. The pressure signal of the three sensors is converted into a voltage signal through the amplifier, and...

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Abstract

The invention discloses a method for testing the gravity center of a mechanical part. The method comprises steps of supporting a testing platform on a cast iron platform through a supporting column, enabling three sensors to be respectively installed at positions, close to an edge, of a lower surface of the testing platform, and enabling connecting lines of the three sensors to form a triangle; screwing bolts into the threaded holes, and then taking away the supporting column; unscrewing the bolts to take down the testing platform, pressing cylindrical heads of the sensors on a cast iron platform, and reading the initial pressure of the three sensors; horizontally placing and fixing the tested part, and obtaining the gravity G of the tested part; taking one of the sensors as an origin of coordinates, establishing a rectangular plane coordinate system, and calculating coordinate values X0 and Y0 of the center of gravity of the tested part when the tested part is horizontally placed; andhorizontally placing and fixing the tested part, calculating coordinate values X1 and Y1 of the gravity center of the tested part when the tested part is vertically placed , and the gravity center coordinates of the part are X0, Y0 and Y1. The method is advantaged in that accurate test data can be provided for solving a dynamic balance problem of a large rotary machine.

Description

technical field [0001] The invention relates to a method for testing the center of gravity of mechanical parts. Background technique [0002] In the detailed design process of mechanical parts, the mass and center of gravity coordinates of the parts can be tested by setting the density through 3D software, but it is more difficult to test the coordinates of the center of gravity of the parts that have been processed, especially for Due to the processing technology, there may be some differences between the actual cast parts and the parts designed in the 3D software, such as some casting fillets, draft angles, etc. error, then the coordinates of the center of gravity of the processed parts are inconsistent with the values ​​measured in the theoretical three-dimensional software, so the theoretical values ​​lose their reference significance, and if these parts are installed on some rotating machinery, it will affect the dynamic balance of the rotating machinery It will have a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/12
CPCG01M1/122
Inventor 郭炜陈羽冯杰
Owner NANJING ANKE MEDICAL TECH CO LTD
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