Test device and test method for static and dynamic characteristics of rolling support linear feed system

Abstract

The invention relates to a device and a method for testing the static and dynamic characteristics of a rolling support straight feed system. The device comprises a base, a rolling guide, a rolling guide sliding block, a bearing support, a bearing, a motor, a coupling, a ball screw pair, a nut base, a connecting plate, a workbench, a synchronization rack, a synchronization push rod, a bridge plate, a loop, a normal force application bolt, a lateral force application bolt, an axial force application device, a vibration exciter, an elastic rope, a rubber ring, a rubber block, a current vortex displacement sensor, a piezoelectric acceleration sensor, an impedance head, a data acquisition unit, a charge amplifier, a power amplifier and a PC (Personal Computer) machine. Compared with the prior art, the device has the following obvious advantages: the structure is compact, the application is wide, the test principle is clear, and static and dynamic characteristic test functions are integrated; the device can be used for testing the normal, axial and lateral static characteristics of the feed system under different load conditions and testing the influences of different guide strided distances and feed speeds on the static and dynamic characteristics of the feed system.

Description

technical field [0001] The invention relates to a static and dynamic characteristic test device and a test method of a machine tool feed system, in particular to a static and dynamic characteristic test device and a test method of a rolling support linear feed system. Background technique [0002] The performance of the rolling support linear feed system has a very prominent impact on the overall performance of the machine tool. Its static and dynamic characteristics have a decisive impact on the positioning accuracy, sensitivity and running stability of the CNC machine tool, and have a great impact on improving the processing quality and efficiency of the machine tool. and system reliability play an important role. The static characteristic test mainly tests the overall stress and strain of the rolling support linear feed system under the action of static force, as well as the change law of stress and strain, and checks out the weak links of the system, so as to provide a b...

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Problems solved by technology

[0004] It can be seen from the above that at present, when testing the static and dynamic characteristics of the machine tool feed system, it is mainly aimed at the feed system of a specific type of machine tool. The measurement of static characteristics and dynamic characteristics requires different devices. Different factors of system performance, such as load magnitude, direction, and feed speed and guideway span, etc., are difficult to measure their influence

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