A dual-plane equal-force balance adjustment method for spindle dynamic balance
A technology of balance adjustment and equivalent force, which is applied in the direction of static/dynamic balance testing, measuring devices, instruments, etc., can solve the problems of undiscovered spindle dynamic balance adjustment, and achieve the effect of simple processing and adjustment methods and improved rotation accuracy
Inactive Publication Date: 2018-01-09
SHENYANG JIANZHU UNIVERSITY
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Problems solved by technology
At present, a method suitable for the dual-plane dynamic balancing device built in the main shaft to realize the dynamic balance adjustment of the main shaft has not been found at home and abroad.
Method used
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[0025] Example: such as figure 1 As shown, the dual-plane equivalent force balance adjustment method for the spindle dynamic balance of the present invention is to generate mass eccentricity by two groups of concentric and parallel mass blocks. When the spindle rotates, the position of the dynamic imbalance force generated by the mass eccentricity is the same as that of the spindle itself. Equilibrium forces with equal magnitude and opposite directions perform correction of the dynamic unbalance of the main shaft;
[0026] Specifically include the following steps:
[0027] ① Calibrate the axial position of the two groups of mass blocks in the inner hole of the main shaft l A , l B ;
[0028] ②Equivalent decomposition of double-plane forces: double-plane refers to the radial plane perpendicular to the main axis where two groups of mass blocks are located, and in the plane where the centrifugal force vector generated by the dynamic unbalance of the main shaft is located, the ...
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The invention discloses a dual-plane equivalent force balance adjustment method for a spindle dynamic balance, which belongs to the technical field of high-speed spindle online dynamic balance. The mass eccentricity is generated by two sets of concentric and parallel mass blocks. When the main shaft rotates, the mass eccentricity produces a balance force with the same position, equal magnitude and opposite direction as the main shaft's own dynamic unbalanced force, and corrects the dynamic unbalance of the main shaft. ; specifically: calibrate the axial positions lA and lB of the two groups of mass blocks in the inner hole of the main shaft; Equivalent force FA′, FB′ at the position of the block; calculate the balance force FA, FB and vector directions θA, θB required for the dynamic balance mass block, and calculate the adjustment angle β1, β2 of the large and small mass blocks. The invention can calibrate and calculate the angle to be adjusted for each mass block under the condition of unknown mass block installation position, so as to adjust the dynamic unbalanced state of the main shaft.
Description
technical field [0001] The invention belongs to the technical field of on-line dynamic balancing of high-speed spindles, and in particular relates to a dual-plane equivalent force balance adjustment method for a spindle dynamic balance. Background technique [0002] High-speed CNC machine tools are one of the technical foundations and development directions of the equipment manufacturing industry. The technical level of high-speed CNC machine tools is a sign to measure the level of a country's manufacturing industry. The main shaft is one of the most critical components in all rotating CNC machine tools, and its performance has a crucial impact on the machining accuracy and reliability of the entire machine tool. Rotational imbalance is one of the main factors affecting the rotation accuracy of the spindle. The realization of dynamic balance on the spindle has become an indispensable key technology. It is the ultimate goal of striving to improve the rotation accuracy, reliab...
Claims
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IPC IPC(8): G01M1/38
Inventor 张珂邓华波李桐
Owner SHENYANG JIANZHU UNIVERSITY