Device for testing thermal state characteristics of feeding system
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A feed system, characteristic testing technology, applied in the direction of machine gear/transmission mechanism testing, etc., can solve the problems of lack of pertinence, the pre-stretching amount may not meet the actual situation, etc., to achieve a wide adjustment range, speed adjustment is convenient and fast, precision high effect
Inactive Publication Date: 2014-11-26
NANJING UNIV OF SCI & TECH
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[0003] In order to prevent the feeding error caused by the heating of the feed system, the traditional method of pre-stretching the screw is used to reduce the error, but it lacks pertinence. Because the speed and axial force have a great impact on the heat generation of the feed system, The amount of pre-stretching taken may not be in line with reality
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[0018] The thermal characteristic testing device of the feed system of the present invention is suitable for the environment where the dimensions of the screw and the bearing vary. The testing device can simulate different pretightening forces and rotation speeds of the screw. Temperature, the infrared thermometer measures the temperature of the lead screw, and the dispersion confocal displacement meter realizes the measurement of the axial thermal displacement of the lead screw.
[0019] combine figure 1 , figure 2 , image 3 and Figure 4 , a feed system thermal characteristic test device of the present invention, comprising a base test bench 1, a servo motor 2, a motor base 3, a shaft coupling 4, a right bearing seat 5, a right bearing assembly 6, a ball screw 7, Workbench 8, lead screw nut 9, lead screw nut seat 10, rolling guide slider 11, wedge block 12, rolling guide 13, left bearing seat 14, axial pretensioning device 15, left bearing assembly 16, dispersion commo...
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Abstract
The invention relates to a device for testing the thermal state characteristics of a feeding system. The device for testing the thermal state characteristics of the feeding system comprises a base experiment table, a servo motor, a motor base, a coupler, a right bearing seat, a right bearing assembly, a ball screw, a lead screw nut base, a lead screw base, a working table, a rolling guide rail, a wedge-shaped block, a rolling guide rail sliding block, a left bearing seat, a left bearing assembly, an axial pre-stretching device, a PC, a pressure sensor, a thermal resistance sensor, an infrared thermometer, a chromatic dispersion confocal displacement meter, a force sensor displayer, a thermal resistance sensor displayer, a servo amplifier and the like. The device for testing the thermal state characteristics of the feeding system has the advantages that the mechanical structure is simple, the testing principle is distinct and the testing precision is high, angular contact ball bearings with different diameters and ball screws can be adopted for testing for various feeding systems, real-time working conditions such as the axial force and the rotation speed are simulated, and the temperature field and the axial thermal displacement of the feeding system are tested.
Description
technical field [0001] The invention belongs to the field of machine tool testing, in particular to a thermal-state characteristic testing device of a feed system. Background technique [0002] At present, the research on the thermal characteristics of the feed system is mostly limited to theoretical analysis and simulation calculation, and the results lack the support of experimental data, and there is a certain error with the actual situation. The present invention verifies the traditional simulation calculation method from the perspective of experiment. Provide a factual basis. [0003] In order to prevent the feed error caused by heat generation in the feed system, the traditional method of pre-stretching the screw is used to reduce the error, but it lacks pertinence. Because the speed and axial force have a great impact on the heat generation of the feed system, The amount of pre-stretching taken may not necessarily be realistic. Contents of the invention [0004] T...
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