Method for testing gravity center of mechanical part

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...

AI Technical Summary

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

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