Kinematical analyses and transmission efficiency of a preloaded ball screw operating at high rotational speeds

Wei, Chin-Chung; Lai, Ruei-Syuan

doi:10.1016/j.mechmachtheory.2011.02.009

Cited by 79 publications

(52 citation statements)

References 7 publications

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“…The contact area is varying with the variation of operating conditions. While setting the boundary on the FEM model, the contact area is assumed as a contact stripe [4]. In the Fig.3, the center of the raceway is No, and the contact distribution of angle is defined as θ o,i , which is written as…”

Section: Analysing Methodologymentioning

confidence: 99%

“…Sliding velocity and contact force will bring the wear occurred at the contact area between ball and raceway. A two body wear model considering the roughness effect was introduced in the ball-screw contact mechanism [4], the density of roughness peak and sliding speed are major factors to the wear of a preloaded ball-screw using in the normal operating conditions. Sliding roll ratio and position of pure rolling point are major factors to the kinetic motion and wear [5,6].…”

Section: Introductionmentioning

confidence: 99%

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Analyses of contact forces and kinetic motion on heavy load ball-screw

Wei

Kao

2018

MATEC Web Conf.

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Abstract. Effects of contact angle and groove factor of a heavy load ballscrew are discussed with the variation of contact forces at eight ball circulations. Contact forces are varying as a sinusoidal function of each circulation owing to the variation of phase angle. With the increase of contact angles, contact forces at each ball circulation are decreased and variation in each ball circulation. The decrease of the contact forces means that the contact stresses of contact areas are reduced. Fatigue life of raceways can thus be extended. Low groove factor can reduce skidding speed and friction coefficient. By the analyzing results, optimal transmission performance can be achieved in a heavy-loaded ball-screw.

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Section: Analysing Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analyses of contact forces and kinetic motion on heavy load ball-screw

Wei

Kao

2018

MATEC Web Conf.

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“…By using ball screws, the rotational motion can be transformed to the linear motion with little friction, low noise and high capacity. Because of their advantages such as precise positioning and high efficiency, ball screw mechanisms are widely applied to feed-drive mechanisms of machine tools and high-precision levelling platforms (Wei and Lin, 2003;Wei and Lai, 2011;Verl et al, 2014). In recent years, the demand for high position accuracy ball screws increases rapidly.…”

Section: Introductionmentioning

confidence: 99%

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

2018

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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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“…Therefore, it is very important to affect the wear and precision retaining ability of the BSM. Wei [1][2][3] introduced the theory of differential geometry of curve to analyze the motion rules of a ball considering the effect of the elastic deformation of contact angle and found that the self-spin and rotational angular velocities of the ball have an approximately linear relationship with the rotational velocity of the screw. Lin et al [4][5] confirmed the existence of both the rolling and sliding motions relative to each other between the ball and raceway during the operation of BSM and proposed a calculation model to estimate the transmission efficiency.…”

Section: Introductionmentioning

confidence: 99%

Effect of contact angle and helix angle on slide-roll ratio under the uniform motion state of BSM

2017

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Abstract.To study the effect of contact and helix angles on slide-roll ratio at the ball contact point under the uniform motion state of ball screw mechanism (BSM), a slide-roll ratio model was derived in the literature [9] were used in this paper. It also conducts a simulation analysis of the slide-roll ratio relationship between the uniform motion at the ball center and ball contact point under different contact angle and helix angle. As shown by the analysis, with the increase in the BSM's contact angle, the slide/roll ratio at the contact point decreased, and the contact angle had a relatively significant effect on the slide/roll ratio; however, with the decrease in the BSM's helix angle, the slide/roll ratio at the contact point decreased, and helix angle had a relatively insignificant effect on the slide/roll ratio.

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Kinematical analyses and transmission efficiency of a preloaded ball screw operating at high rotational speeds

Cited by 79 publications

References 7 publications

Analyses of contact forces and kinetic motion on heavy load ball-screw

Analyses of contact forces and kinetic motion on heavy load ball-screw

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

Effect of contact angle and helix angle on slide-roll ratio under the uniform motion state of BSM

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