A mechanical online dynamic balancing system with built-in spindle

Abstract

The invention discloses a mechanical online dynamic balancing system with a built-in spindle, which belongs to the technical field of high-speed spindle online dynamic balancing. Including dynamic balance device, motion control system, data wireless transmission system, dynamic unbalance detection calculation system, control decision calculation system; dynamic balance device is placed in the main shaft, dynamic unbalance detection and calculation system detects the unbalance signal of the main shaft, analyzes and calculates The equivalent centrifugal force of dynamic unbalance and its vector direction and position; the control and decision-making operation system decomposes the equivalent centrifugal force into two adjustment planes of dynamic unbalance, and calculates the equivalent centrifugal force of dynamic unbalance of each plane; and formulates the Mass distribution strategy; the wireless data transmission system receives and transmits dynamic unbalance correction instructions; the motion control system is installed in the control chamber of the dynamic balance device, receives the dynamic unbalance correction instructions, and controls the operation of the motor in the dynamic balance device. The invention is suitable for various operating conditions of the main shaft, and realizes online correction of the dynamic unbalanced state of the main shaft.

Description

technical field [0001] The invention belongs to the technical field of online dynamic balancing of high-speed spindles, in particular to a mechanical online dynamic balancing system with a built-in 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 of the ...

AI Technical Summary

Problems solved by technology

However, the speed of the high-speed CNC machine tool spindle is mostly tens of thousands of revolutions, and some even reach hundreds of thousands of revolutions, and the power is relatively large.

The built-in dynamic balancing device needs to be placed inside the main shaft to rotate with the main shaft, so the response speed, signal transmission, power supply and other aspects of the measurement and control system are difficult to meet the needs of the dynamic balancing device

Furthermore, due to the narrow space of the general spindle process hole and the complex structure of the mechanical dynamic balancing device, how to fix the dynamic balancing device in a small space and arrange the internal structure of the device is challenging

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