Accurate evaluation method for pre-tightening dragging force of rolling linear guide rail pair
A linear guide rail pair and evaluation method technology, which is applied in the testing of machines/structural components, testing of mechanical components, instruments, etc., can solve problems such as the inability to evaluate fluctuations in pre-tightening drag force
Active Publication Date: 2020-02-21
NANJING UNIV OF SCI & TECH
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Problems solved by technology
However, the current evaluation methods for the preload drag force of rolling linear guides at home and abroad are limited to two indicators: the average value of the preload drag force within the effective stroke and the overall variation of the preload drag force, so that only the rolling linear guide can be evaluated. The average value and overall variation range of the pre-tightening drag force of the guide rail pair cannot evaluate the fluctuation of the pre-tight drag force at different positions of the rolling linear guide pair
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Embodiment
[0071] The method for accurately evaluating the pre-tightening drag force of a rolling linear guide pair according to the present invention includes the following contents:
[0072] 1. Build a measuring system for the preload drag force of rolling linear guide rails.
[0073] To build a rolling linear guide pair preload drag force measurement system such as figure 2 As shown, it includes the test bench, the pre-tightening drag force measuring unit and the data acquisition and processing unit; The acquisition and processing unit is connected with the pre-tightening drag force measurement unit. The system is used to complete the on-line detection of the pre-tightening drag force during the entire operation of the rolling linear guide pair.
[0074] 2. Test the rolling linear guide pair to obtain the measured value of the pre-tightening drag force of the rolling linear guide pair.
[0075] In the embodiment of the present invention, two samples of the same rolling linear guid...
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The invention discloses an accurate evaluation method for a pre-tightening dragging force of a rolling linear guide rail pair. The method comprises the following steps: establishing a pre-tightening dragging force measuring system of the rolling linear guide rail pair; testing, by the pre-tightening dragging force measuring system, the to-be-tested rolling linear guide rail pair to obtain a pre-tightening dragging force measurement value of the to-be-tested rolling linear guide rail pair; calculating each evaluation parameter value of the pre-tightening dragging force of the to-be-tested rolling linear guide rail pair according to the pre-tightening dragging force measurement value; and evaluating the pre-tightening dragging force of the to-be-tested rolling linear guide rail pair in combination with the evaluation parameter values. The method can be used to effectively solve the problems of insufficient evaluation parameters, inaccurate evaluation results and the like of the pre-tightening dragging force of the current rolling linear guide rail pair, and facilitates model selection of the rolling linear guide rail pair under different use conditions.
Description
technical field [0001] The invention relates to the field of performance evaluation of a rolling linear guide rail pair, in particular to a method for accurately evaluating the pretightening drag force of a rolling linear guide rail pair. Background technique [0002] The rolling linear guide pair has the advantages of small frictional resistance, small difference between dynamic and static friction coefficients, simple structure, high motion precision, good precision retention, and high reliability, so it has been widely used in various high-end CNC machinery and automation equipment. The preload drag force is an important performance index of the rolling linear guide pair, which is the main reason for the hindrance of the rapid response of the system and the energy consumption, and the fluctuation of the preload drag force is whether the rolling linear guide pair is stable during the motion process. Therefore, it is of great significance to study the preload drag force to ...
Claims
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IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 周长光叶坤奇
Owner NANJING UNIV OF SCI & TECH