Measuring straightness error of guide with modulated polarized light

Zhu, Ling-Jian; Li, Lin; Liu, Junhua; Zhang, Zhonghua

doi:10.1117/12.819712

Cited by 1 publication

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“…The measure result indicated that the instrument advanced the measuring veracity and efficiency [3]. L. J. Zhu and C. D. Hu introduced some method of measuring guide straightness error [4], [5]. Y. Liu used two total stations cooperating with each other to measure the straightness of the guide rail [6].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Error Analysis of the Parallelism Measurement for Linear Rolling Guide Pair

Liang¹,

Wang²,

Yin³

et al. 2015

IJMMM

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Abstract-The parallelism of a linear rolling guide pair directly affects the machining precision of machine tools. Therefore, it's necessary and meaningful to find the measurement method to test them. A test method of parallelism of rolling linear guide pairs based on non-contact laser displacement sensors has been put forward. The paper derives an analytical testing algorithm of measurements of five laser displacement sensors to obtain the parallelism and their error analysis of linear rolling guide pairs. The parallelism of linear guide pairs includes five movement precisions which are horizontal parallelism, vertical parallelism, elevation angle, deflection angle and roll angle of a slider block relative to its guide way. The converting formulas from the laser sensors' measurement to the two parallelisms and three angles are derived based on the basic theory of three-points can determine a plane. Because the sensors are installed with inevitably errors, the deviation of two parallelisms and three angles caused by the errors are analyzed. Results show that two parallelisms and three rotation angles depend critically on the measuring length of five laser sensors. The paper provides an effective method for measuring the parallelism and makes progress of the automatic detection of a linear rolling guide pair.Index Terms-Error analysis, Linear roller guide, movement precision, parallelism. I. INTRODUCTIONThe rolling linear guide pairs are widely used in automation equipments and high-end CNC tools as precision guide members, because of its high linear positioning accuracy. The parallelism, namely straightness, of guide pairs in translation motion is a significant index of accessing accuracy, since which directly affects their own service life and the machining precision of machine tools. Therefore, it"s necessary and meaningful to test and evaluate the parallelism of guide pairs.In recent years, a few of researchers and engineers had studied on how to test the precision of linear guide pairs. used two total stations cooperating with each other to measure the straightness of the guide rail [6]. P. Majda proposed a method of analytical examination of the influence of geometric errors in linear guide way on joint kinematic errors [7]. Yang Ye and Feng used a gantry with five non-contact probe to measure the accuracy of guide way, it has high detection accuracy and it is suitable for different specifications of guide rail [8]. J. Xiong introduced the dynamic measurement of friction and put forward two methods to measure and check motion accuracy [9]. J. L. Sun and M. H. Qian discussed the processing course in quest of linear error by GA [10]. Tao, Yin, Cai and Zhang introduced a system for testing linear motion guide. In the system, laser, optical fiber, displacement sensor, laser collimation technique, force sensor and computers were used to measure and process data. It solved the problem of measuring linear motion guide [11]. Zhong, Tao and Han studied the modeling and test method on the motion precision loss proces...

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Section: Introductionmentioning

confidence: 99%