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A spindle dynamic unbalance detection calculation method and system

A technology of dynamic unbalance and calculation method, applied in static/dynamic balance test, measurement device, machine/structural component test, etc., can solve problems such as undiscovered, achieve improved rotation accuracy, low loss, accurate detection and calculation Effect

Inactive Publication Date: 2017-07-21
SHENYANG JIANZHU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, an efficient online dynamic balance detection calculation method suitable for high-speed spindles with integrated bushings has not been found at home and abroad.

Method used

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  • A spindle dynamic unbalance detection calculation method and system
  • A spindle dynamic unbalance detection calculation method and system
  • A spindle dynamic unbalance detection calculation method and system

Examples

Experimental program
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Effect test

Embodiment

[0025] Example: such as figure 1 As shown, a method for detecting and calculating the dynamic unbalance of the main shaft in the present invention comprises the following steps:

[0026] ① Acquisition of sensor signals: the main shaft is placed in the shaft sleeve, and there are two acceleration sensors to measure the acceleration analog signal caused by the deformation of the shaft sleeve due to the dynamic unbalance of the main shaft; at the same time, the signal of the phase sensor is collected, and the phase sensor Set at the corresponding spindle center mark line to detect and identify the spindle rotation phase mark;

[0027] ②Amplitude-frequency conversion of the signal: convert the collected acceleration analog signal into a time-domain signal through the acquisition card, convert the time-domain signal into a frequency-domain signal; convert the phase sensor signal into a time-domain signal;

[0028] ③ Extract the same-frequency signal of the spindle speed and determ...

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Abstract

The invention discloses a method for detecting and calculating the dynamic imbalance of a main shaft, which belongs to the technical field of online dynamic balancing of high-speed main shafts. The method includes the following steps: collecting the deformation signal of the shaft sleeve and the phase signal of the main shaft rotation; extracting the same frequency signal of the main shaft speed through the amplitude-frequency conversion of the signal, and determining the phase angle θ of the collected signal; obtaining the shaft sleeve with the same phase at the positions of the two acceleration sensors Maximum deformation y 2 、y 6 ;Determine the dynamic unbalanced position D(l D ,y D ), l D is the axial position, y D is the maximum deformation; calculate the centrifugal force F generated by the dynamic unbalance of the main shaft D The vector direction θ and position l of D . The invention is suitable for various operating conditions of the main shaft under the one-piece shaft sleeve, and realizes the calculation of the dynamic unbalance of the main shaft. The invention is used in an online adjustment system for the dynamic unbalance of the main shaft, which can realize the monitoring, analysis and adjustment of the dynamic balance state of the high-speed main shaft, has a compact structure, can adapt to the high-speed rotation state, and has low loss and high efficiency. The detection calculation is accurate.

Description

technical field [0001] The invention belongs to the technical field of on-line dynamic balancing of high-speed spindles, in particular to a method for detecting and calculating the dynamic unbalance of a spindle. 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, reliability and service life o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M1/16
Inventor 张珂邓华波李桐
Owner SHENYANG JIANZHU UNIVERSITY
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