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Mechanical Sciences An open-access journal for theoretical and applied mechanics
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Volume 9, issue 1
Mech. Sci., 9, 15-24, 2018
https://doi.org/10.5194/ms-9-15-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Mech. Sci., 9, 15-24, 2018
https://doi.org/10.5194/ms-9-15-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 09 Jan 2018

Research article | 09 Jan 2018

A novel non-contact measuring system for the thread profile of a ball screw

Leilei Zhao, Hutian Feng, and Qianfeng Rong Leilei Zhao et al.
  • Department of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China

Abstract. In order to meet the demand of high position accuracy, many methods have been developed for measuring the thread profile features of ball screws. However, most of these efforts are limited to measuring a small number of ball screw features and therefore less efficient. In this study, an automatic, non-contact measuring system for the thread profile of a ball screw was developed. It is capable of measuring most common features of the ball screw thread profile and can measure ball screws of different sizes and lengths. The main part of the system is the light curtain which has a high-resolution line-scan CCD camera to measure the projected outer contour of the target. Data points from the thread profile of a ball screw were collected by the measuring system and data pre-processing was performed. Then, the proposed method was used to calculate the most important geometric parameters and errors of the thread profile. The accuracy of the measuring system was verified by testing and evaluating four sets of ball screws from different manufacturers.

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An automatic, non-contact measuring system for the thread profile of a ball screw was developed. It is capable of measuring most common features of the ball screw thread profile and can measure ball screws of different sizes and lengths. The accuracy of the measuring system was verified by comparing the image from the system with the image from the reference instrument and then, different ball screws were compared and evaluated, which was the main purpose of designing such a measuring system.
An automatic, non-contact measuring system for the thread profile of a ball screw was developed....
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