Development and Experimental Verification of Multi-parameter Test Bench for Rolling Linear Guide Pairs

Rolling linear guide pairs are extensively utilized in CNC machine tool industry and other industries. To efficiently and accurately assess the performance indicators of guide pairs, a multi-parameter test bench has been developed. Parameters measured on the test bench include motion accuracy, preload drag force, vibration, and temperature rise, and fatigue life of rolling linear guides. The mechanical structure and measurement control system of the test bench were designed according to measurement principles and methods. ANSYS software was utilized to investigate statics analysis of the gantry, modal analysis of the upper bed, and simulation analysis of the impact of loading block thickness on load distribution uniformity for the tested guide pairs. The analysis results validated the rationality of the structural design. In order to validate the accuracy of the multi-parameter test bench, comparative experiments were conducted using Hilectro LGD35 model guide pairs as the research object. The experiments focused on assessing the motion accuracy, preload drag force, and fatigue life of the targeted guide pairs. The experimental results demonstrated that the test bench achieves a high level of accuracy, and verified the correctness of the derivation equations for motion accuracy measurement.