Experimental and Analytical Investigations on Normal and Angular Stiffness of Linear Guides in Manufacturing Systems

Rahmani, Mahdi; Bleicher, Friedrich

doi:10.1016/j.procir.2015.12.033

Cited by 25 publications

(13 citation statements)

References 16 publications

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“…Previously, we have investigated on the static stiffness properties of the linear guides experimentally and analytically [9], based on which this FEM modeling is conducted and the results will be compared with the experiments. The static stiffness of the linear motion guide system in radial, reverse radial, lateral directions and the angular stiffness in roll, pitch and yaw directions were investigated.…”

Section: Experimental Procedures and Specificationsmentioning

confidence: 99%

Numerical investigations on the static stiffness of industrial ball bearing linear guides

Rahmani¹,

Krall²,

Bleicher³

2016

DAAAM Proceedings

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A technology of creating of geographically distributed multi-operator control of mechatronic devices via the Internet is This research work deals with some numerical investigations on the static stiffness of machine tools ball bearing linear guides. Finite Elements Method (FEM) is employed to carry out the simulations using ANSYS software. Previously, we have conducted some experimental researches of the guide's stiffness in different directions such as radial, lateral and angular directions. As experimental researches cost a lot of time and money, it is necessary to use numerical methods at the design stage and also for further investigations. Therefore, more data are available and the experiments can be concentrated to the most important fields. In this work a FEM model of the guides is developed and the results are compared to the experimental ones. A good agreement has been found to be between the experimental and numerical results.

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Section: Experimental Procedures and Specificationsmentioning

confidence: 99%

Numerical investigations on the static stiffness of industrial ball bearing linear guides

Rahmani¹,

Krall²,

Bleicher³

2016

DAAAM Proceedings

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“…In the reported research, a vertical load on the LMR is applied by using vice handle mechanism 14 or trapezoidal screw 4,15 in manual operation, which are unable to achieve the large load in an automatic manner.…”

Section: Load Test Bench Of Lmrmentioning

confidence: 99%

Real contact total length of linear motion roller guide without preload based on Greenwood–Williamson rough contact model

Feng

Chen

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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In traditional studies of linear motion roller guide, the static stiffness is a main indicator to evaluate the mechanical behavior. However, the local contact profile between the roller and raceway surface, although very important to the precision maintenance, cannot be reflected in the measured value of static stiffness. In this article, a new indicator, named the real contact total length (RCTL), is proposed based on the Greenwood–Williamson model and the Hertz contact theory. In particular, an electric contact model is presented where the RCTL of linear motion roller guide without preload is expressed in terms of the measured electric resistances. To verify the model, an experiment is conducted to measure the electric resistances under different vertical loads by a designed load test bench and a digital, direct-current, high-resolution electric resistance meter (DRRM). The test results show good agreement with the model. Based on the electric contact model, the main parameters that affect the RCTL value are roughness Ra and the length of roller, which are directly related to the mechanical behavior of linear motion roller guide in the design and manufacture stages.

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“…Such simplification has been used to predict the translational error motions of the stage with LM Guide rail shape error and ball stiffness. [3][4][5][6][7][8][9][10][11][12][13][14][15][16] Linear stages for electrical test machines are designed with high acceleration and deceleration capabilities for productivity. As a result, significant yaw motion and vibration of the platform could occur.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Position Repeatability of a Linear Stage with Yaw Minimization

Cho¹,

Kwon²,

Kim³

2021

Preprint

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Recently, due to the miniaturization of electronic products, printed circuit boards (PCBs) have also become smaller. This trend has led to the need for high-precision electrical test equipment to check PCBs for disconnections and short circuits. The purpose of this study is to improve the position repeatability of the platform unit up to ±2.5 μm in a linear stage type test equipment. For this purpose, the causes of position errors of the platform unit are analyzed. The platform unit holding the PCB is driven by a single-axis linear ball screw drive system offset from its geometric center due to design constraints. The yaw rotation of the platform is found to have a dominant effect on position repeatability. To address this problem, the methods of adding balancing weights to the platform unit and adjusting the stiffness of LM Guides are proposed. This reduces the yaw rotation by moving the centers of mass and stiffness closer to the linear ball screw actuator. In the verification tests, the position repeatability was decreased to less than ±1.0 μm.

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Experimental and Analytical Investigations on Normal and Angular Stiffness of Linear Guides in Manufacturing Systems

Cited by 25 publications

References 16 publications

Numerical investigations on the static stiffness of industrial ball bearing linear guides

Numerical investigations on the static stiffness of industrial ball bearing linear guides

Real contact total length of linear motion roller guide without preload based on Greenwood–Williamson rough contact model

Improvement of Position Repeatability of a Linear Stage with Yaw Minimization

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