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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
A novel non-contact measuring system for the thread profile of a ball screw
Leilei Zhao, Hutian Feng, and Qianfeng Rong 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.

Citation: Zhao, L., Feng, H., and Rong , Q.: A novel non-contact measuring system for the thread profile of a ball screw, Mech. Sci., 9, 15-24, https://doi.org/10.5194/ms-9-15-2018, 2018.
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Short summary
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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