Method and device for testing the static stiffness of the junction of modular rolling linear guide rail pairs
A technology of linear guide pair and testing device, which is applied in the testing of machine/structural parts, measuring device, testing of mechanical parts, etc., can solve the problem of difficulty in testing the six stiffnesses of the joint part of the rolling guide pair and so on.
Active Publication Date: 2016-08-24
XIAN UNIV OF TECH
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Problems solved by technology
[0006] The purpose of the present invention is to provide a static stiffness testing device for modular rolling linear guide rails, which solves the problem that the six stiffnesses of the joints of rolling guide rails are difficult to test due to the various specifications and sizes of rolling guide rails under the existing technical conditions.
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[0040] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0041] figure 1 is the schematic diagram of the definition of the auxiliary coordinate system of the guide rail, figure 2 Project the section view for the rail secondary coordinate system. The coordinate origin O is defined in the symmetrical plane of the upper and lower four rows of balls, that is, the intersection of the symmetrical planes of the X-axis, Y-axis, and Z-axis, and the guide rail auxiliary coordinate system XYZ-O is located at the symmetrical position of the guide rail block. The top surface of the Z-axis perpendicular to the guide block is called the normal direction, which is located at its symmetrical position; the X-axis is along the moving direction of the guide block, located at the symmetrical axis position of the upper and lower rows of balls and the symmetrical position of the guide block along the X-axis; th...
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The invention discloses a static stiffness testing device for a modular rolling linear guide rail pair, which enables a definite positioning relationship between the tested guide rail pair and three positioning holes A, B, and C on a bridge box body; the tension loading mechanism is fixed In the positioning hole A, realize the normal tensile stiffness test loading; fix the pressure loading mechanism in the positioning hole A, realize the normal compressive stiffness test loading; move the guide rail block to offset the normal compressive load, and realize the angle around the Y axis Stiffness test loading, fix the pressure loading mechanism in the positioning hole B to realize the lateral stiffness test loading; move the guide rail block to offset the lateral pressure load, realize the angular stiffness test loading around the Z axis, and fix the pressure loading mechanism in the positioning In hole C, the angular stiffness test loading around the X axis is realized. The invention also discloses a static rigidity testing device for a modular rolling linear guide rail pair. The device and method of the invention are simple and easy to implement, and have strong adaptability.
Description
technical field [0001] The invention belongs to the technical field of detection equipment, and relates to a method for testing the static stiffness of a modular rolling linear guide rail pair, and also relates to a testing device for the static stiffness of a modular rolling linear guide rail pair. Background technique [0002] Rolling linear guides are widely used in CNC machine tools, robots and other CNC equipment, and are the main functional components for low-friction feed of moving parts in CNC equipment. The rolling linear guideway pair is to place rolling elements (balls, rollers) between the guideway block and the guideway bar (supporting guideway), so as to realize the extremely low rolling friction transmission between the guideway block and the guideway bar. The inter-part (including the rolling elements) constitutes the junction of the rolling linear guide pair. The stiffness of the joint of the rolling linear guide pair (that is, the stiffness of the joint fo...
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IPC IPC(8): G01M13/00G01N3/00
Inventor 张广鹏袁冲王丹张博黄玉美
Owner XIAN UNIV OF TECH