Device and method for testing dynamic characteristics of single-screw or double-screw rolling supporting linear feed system

Abstract

The invention relates to a device and method for testing the dynamic characteristics of a single-screw or double-screw rolling supporting linear feed system. The device for testing the dynamic characteristics of a single-screw or double-screw rolling supporting linear feed system comprises a base, guide rail installation plates, rolling guide rails, wedge blocks, rolling guide rail sliding blocks, bearing seats, a bearing, a coupler, a ball screw pair, a nut seat, a motor, a working platform, a synchronization frame, synchronization rods, rubber rings, elastic ropes, a piezoelectricity accelerating speed sensor, an impedance head, a data collector, a charge amplifier, a power amplifier and a PC. Compared with the prior art, the device for testing the dynamic characteristics of a single-screw or double-screw rolling supporting linear feed system is compact in structure, wide in application range, clear in test philosophy, and capable of having the functions of testing the dynamic characteristics of the single-screw rolling supporting linear feed system and the double-screw rolling liner feed system, testing the influence of the screw span on the dynamic characteristics of the double-screw rolling linear feed system, and testing the influences of the guide rail span and the feed speed on the dynamic characteristics of the single-screw rolling supporting linear feed system and the double-screw rolling linear feed system.

Description

technical field [0001] The invention relates to a dynamic characteristic testing device and a testing method of a numerical control machine tool feed system, in particular to a dynamic characteristic testing device and a method of a single-double lead screw rolling support linear feeding system. Background technique [0002] The rolling support linear feed system composed of rolling guide rails and ball screws as the main transmission components is the most widely used on CNC machine tools, and its performance has a very prominent impact on the overall performance of the machine tool. Accuracy, sensitivity and running stability have a decisive influence, and play an important role in improving the processing quality, efficiency and system reliability of machine tools. The dynamic characteristic test mainly tests the modal parameters of the system, which provides a basis for the analysis of the vibration characteristics of the structural system, the diagnosis and prediction o...

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Problems solved by technology

However, this device cannot realize the measurement of the double screw feed system, let alone the influence of the span of the screw on the dynamic characteristics of the double screw feed system; A connecting plate is designed in between, and the distance between the guide rails can be adjusted by adjusting the connection position between the slider of the guide rail and the connecting plate, but the adjustment range of the distance between the guide rails is limited by the size of the connecting plate itself

[0005] It can be seen from the above that at present, when testing the dynamic characteristics of the machine tool feed system, there is no device that can test the dynamic characteristics of both the single-screw feed system and the double-screw feed system, and there is no device that can realize the span adjustment of the double-screw

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