Main shaft built-in mechanical on-line dynamic balancing system

Abstract

The invention provides a main shaft built-in mechanical on-line dynamic balancing system and belongs to the high-speed main shaft on-line dynamic balancing technology field. The main shaft built-in mechanical on-line dynamic balancing system comprises a dynamic balancing device, a movement control system, a data wireless transmission system, a dynamic unbalancing detection calculation system and a control decision operation system. The dynamic balancing device is placed in a main shaft. The dynamic unbalancing detection calculation system detects an unbalancing signal of the main shaft, and analyzes and calculates a main shaft dynamic unbalancing equivalent centrifugal force, a vector direction of the force and a position of the force. The control decision operation system carries out equivalent decomposition of the equivalent centrifugal force to two dynamic unbalancing adjustment planes, calculates a dynamic unbalancing equivalent centrifugal force of each plane, and makes a mass distribution strategy of each mass block group. The data wireless transmission system receives and transmits a dynamic unbalancing correction instruction. The movement control system is installed in a control cavity of the dynamic balancing device, receives the dynamic unbalancing correction instruction and controls rotation of a motor in the dynamic balancing device. The main shaft built-in mechanical on-line dynamic balancing system is suitable for various main shaft operation conditions, and achieves main shaft dynamic unbalancing state on-line correction.

Description

Technical field [0001] The invention belongs to the technical field of high-speed spindle online dynamic balancing, and particularly relates 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 that measures the level of a country's manufacturing industry. The main shaft is one of the most critical parts of all rotating CNC machine tools, and its performance has a vital influence on the machining accuracy and reliability of the entire machine tool. Unbalance of rotation 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 improving the rotation accuracy, reliability and service life of the spindle....

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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