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Journal articles on the topic 'Ball screws'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 May 2022

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1

Wang, Fu Ji, Jian Wei Ma, Zhen Yuan Jia, Jiang Yuan Yang, and Di Song. "Multiple Influencing Factors Analysis for Non-Conformal Contact Characteristics of Ball Screw." Advanced Materials Research 199-200 (February 2011): 707–14. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.707.

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The contact between balls and screw races or nut races is a kind of typical non-conformal contact. The study of contact characteristics of ball screw will provide theoretical bases for improving transmission efficiency and working properties of ball screw. In this study, hertz contact theory was adopted to construct the solution formula of ball screw’s contact stiffness, ball screw’s contact characteristics in terms of axial load, design parameters and material properties was analyzed, and the contact deformation value of the contact between ball and screw races was got using finite element si
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2

Horng, Jeng-Haur, Shin-Yuh Chern, Chi-Lin Li, and Yang-Yuan Chen. "Surface temperature and wear particle analysis of vertical motion double-nut ball screws." Industrial Lubrication and Tribology 69, no. 6 (2017): 952–62. http://dx.doi.org/10.1108/ilt-10-2016-0244.

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Purpose This paper aims to investigate the temperature and wear properties of vertical ball screws and to discuss the surface design of ball screws in industrial applications. Design/methodology/approach The energy equation of the screw surface considering the frictional heat was established to verify the surface temperature of the ball screw. X-ray diffraction was used to examine the micro-contact temperature between the ball and screw. Debris size and density were examined to investigate wear properties of ball screws and to study the relationship of wear debris and temperature. Findings Fir
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3

Xu, Xiang Rong, Xian Chun Song, Hong Kui Jiang, and Yan Feng Li. "Finite Element Modal Analysis of Ball Screws Linear Guide Feed Unit." Applied Mechanics and Materials 433-435 (October 2013): 67–71. http://dx.doi.org/10.4028/www.scientific.net/amm.433-435.67.

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With the high-speed and high-precision development of CNC machine tool, the vibration problem of ball screws linear guide feed unit has become more and more prominent. The dynamic characteristics was analyzed for ball screws linear guide feed unit, the 3D finite element model was built, the finite element modal analysis was discussed, the natural frequency and vibration modes were obtained, which were compared with the test results. The vibration weaknesses of ball screws linear guide feed unit were found out. The results show that the vibration weaknesses of ball screws linear guide feed unit
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4

Zhao, Jiajia, Mingxing Lin, Xianchun Song, and Qizhen Guo. "Analysis of the precision sustainability of the preload double-nut ball screw with consideration of the raceway wear." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 234, no. 9 (2019): 1530–46. http://dx.doi.org/10.1177/1350650119883484.

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Ball screws are the driving components used to convert the rotational motion into linear motion in precision equipment. However, the machining accuracy of precision equipment is directly determined by the positioning accuracy of the ball screw. The authors analyze the precision sustainability of preload double-nut ball screws with raceway wear. A new wear model combining the modified Archard theory and the iterative interpolation method is established to analyze the variations in wear depth. A new model considering the coupling relationship between raceway wear and preload loss is proposed to
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Chen, Yongjiang, and Wencheng Tang. "Determination of contact stiffness in ball screws considering variable contact angles." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 12 (2014): 2193–203. http://dx.doi.org/10.1177/0954406213516304.

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The contact angles formed at the position of each ball in ball screws are conventionally assumed to be a constant value in determination of contact stiffness. In this study, instead of being treated as pre-assumed constants, the contact angle is formulated as functions of the position angle of balls to reflect their distribution dependent on the operation condition and design parameters. After establishing a proper transformed coordinate system according to the ball screw mechanism, the variable contact angles and normal forces of the ball screw are predicted. Then the contact stiffness obtaine
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6

Gao, Xiangsheng, Kuan Zhang, Min Wang, Tao Zan, and Jiajun Luo. "Thermally stimulated artificial muscles: Bio-inspired approach to reduce thermal deformation of ball screws based on inner-embedded CFRP." REVIEWS ON ADVANCED MATERIALS SCIENCE 60, no. 1 (2021): 541–52. http://dx.doi.org/10.1515/rams-2021-0047.

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Abstract Ball screws are the indispensable machine tool components and, as such, influence the positional accuracy of machine tools. The accuracy stability of machine tools is affected by thermal deformation of ball screws resulting from the increase in temperature. Inspired by the distinctive artificial muscle heat behavior, a bio-inspired ball screw was proposed. The proposed ball screw was based on the inner-embedded carbon fiber-reinforced plastic (CFRP), which restrains the axial expansion through the thermal contraction of CFRP. Additionally, a thermal conductor was mounted between the s
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7

Gao, Qin, Guo, Wang, and Zan. "Adaptive Method to Reduce Thermal Deformation of Ball Screws Based on Carbon Fiber Reinforced Plastics." Materials 12, no. 19 (2019): 3113. http://dx.doi.org/10.3390/ma12193113.

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Abstract: In high-speed precision machining, thermal deformation caused by temperature rise affects the accuracy stability of the machine tool to a significant extent. In order to reduce the thermal deformation of ball screws and improve the accuracy, a new adaptive method based on carbon fiber reinforced plastics (CFRP) was proposed in this study and the thermal deformation of ball screws was determined. By using the sequential coupling method, the thermal–structural coupling analysis of a ball screw was conducted based on the finite element method (FEM). The analysis results were verified th
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8

Zhao, Leilei, Hutian Feng, and Qianfeng Rong. "A novel non-contact measuring system for the thread profile of a ball screw." Mechanical Sciences 9, no. 1 (2018): 15–24. http://dx.doi.org/10.5194/ms-9-15-2018.

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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-r
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9

Xiao, Hui, Da Wei Zhang, Yi Guang Shi, and Zhen Hong Sun. "Research on the Effect of Pre-Stress on Bending Stiffness of the Ball Screw Based on ANSYS." Advanced Materials Research 690-693 (May 2013): 1784–87. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.1784.

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In this paper, the effect of pre-stress of ball screws on bending stiffness is studied. By using ANSYS APDL parameterized method and adding stress stiffness effect, the relationship between the maximum deflection of ball screws under gravity load and pre-stress is given. The research result shows that with the increasing of pre-stress, the maximum deflection of the ball screw under gravity load gets smaller nonlinearly. The effects of pre-stretching of the ball screw on bending stiffness vary with different cross sections.
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10

Zhou, Chang-Guang, Yi Ou, Hu-Tian Feng, and Zeng-Tao Chen. "Investigation of the precision loss for ball screw raceway based on the modified Archard theory." Industrial Lubrication and Tribology 69, no. 2 (2017): 166–73. http://dx.doi.org/10.1108/ilt-12-2015-0204.

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Purpose This paper aims to examine the precision loss of ball screw raceway under different operating conditions and geometry parameters. Design/methodology/approach Based on a new coefficient K’ introduced especially for ball screws to reflect the actual contact condition, the modified Archard theory is applied to ball screws to obtain wear volume of the ball-screw contacts. Thus, the axial precision loss can be defined as the ratio of the wear volume to the contact area. Meanwhile, a novel running bench and a precision-measuring system of ball screws are conducted. Precision variation is obt
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11

Hillenbrand, J., A. Spohrer, and J. Fleischer. "Zustandsüberwachung bei Kugelgewindetrieben*/Integration of strain gauge sensors in ball screw." wt Werkstattstechnik online 108, no. 07-08 (2018): 493–98. http://dx.doi.org/10.37544/1436-4980-2018-07-08-11.

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Industrielle Antriebe, darunter lineare Vorschubachsen wie der Kugelgewindetrieb, unterliegen einem natürlichen Verschleißverhalten. Diesen Verschleißzustand zu diagnostizieren und die verbleibende Betriebsdauer der Komponente abzuschätzen, ist das Ziel von Condition-Monitoring-Systemen. Der Artikel präsentiert ein solches System, basierend auf einem in den Kugelgewindetrieb integrierten Sensor.   Industrial feed elements such as ball screws are subject to natural wear behavior over their product life cycle. Diagnozing the present state of wear and predicting the remaining use of ball
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12

Novotný, Lubomír W., Jiří Marek, and Tomáš Marek. "Issue of Rigidity of the Ball Screw Nut Exposed to Bending Stress during Bending Stress of the Ball Screw." Applied Mechanics and Materials 821 (January 2016): 372–77. http://dx.doi.org/10.4028/www.scientific.net/amm.821.372.

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Ball screws and nuts represent the inseparable part of machinetool building. The thread lead accuracy ranges in hundredths of millimetres per 1 m. In addition to the undesirable phenomena caused by heat (dilatability) and, e. g., torsional and transverse oscillations, the bending stress of the ball screw is considerably undesirable too. This stress and at the same time behaviour are transferred to the bending stress of the ball screw nut. This has a very harmful influence on setting of the ball screws, when the machine tool is assembled. Using the analysis by means of the FEM method, the paper
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13

Brecher, Christian, Florian Kneer, and Stephan Neus. "Last-Verlagerungsverhalten von Kugelgewindetrieben/Load displacement behavior on ball screws." wt Werkstattstechnik online 110, no. 05 (2020): 295–98. http://dx.doi.org/10.37544/1436-4980-2020-05-27.

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Die axiale Steifigkeit von Kugelgewindetrieben ist wesentlich für das Betriebsverhalten von Werkzeugmaschinen. Während der Bearbeitung werden die Prozesskräfte über den Kugelgewindetrieb in die Maschinenstruktur übertragen. Kugelgewindetriebe tragen daher maßgeblich zur Qualität und Produktivität von Werkzeugmaschinen bei. Dieser Beitrag beschreibt eine Methode zur messtechnischen, prüfstandsgebundenen Ermittlung des Last-Verlagerungsverhaltens an Kugelgewindetrieben.   The axial elastic displacement of ball screws are essential for the operating behavior of machine tools. During mach
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14

Luo, Haitao, Jia Fu, Lichuang Jiao, and Fengqun Zhao. "Theoretical Calculation and Simulation Analysis of Axial Static Stiffness of Double-Nut Ball Screw with Heavy Load and High Precision." Mathematical Problems in Engineering 2019 (June 27, 2019): 1–11. http://dx.doi.org/10.1155/2019/9608794.

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Double-nut ball screws bear the action of bidirectional pretightening force, leading to the deformation of the contact area between the ball and the raceway. Under this condition, it is important to analyze and calculate the static stiffness of the ball screw. However, the conventional calculation method is inaccurate. Hence, a new method for the static stiffness analysis of a double-nut ball screw is proposed. Through the structural analysis of the ball screw and internal load distribution, a load deformation model was established based on the Hertzian contact theory. Through the load analysi
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15

Xu, Xiang Rong, Xian Chun Song, Hong Kui Jiang, and Yan Feng Li. "Influence Factors Comparison and Analysis of Axial Contact Stiffness between Single-Nut and Double-Nut Ball Screws." Advanced Materials Research 889-890 (February 2014): 555–58. http://dx.doi.org/10.4028/www.scientific.net/amr.889-890.555.

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Axial contact stiffness increase of ball screws can reduce the vibration and enhance machining precision of CNC machine tool during machining process. On the basis of Hertz contact theory, calculation formula of axial contact stiffness was deduced with consideration of helix angle for 5010 single-nut and double-nut ball screws, influence factors comparison and analysis was carried out, and contrast curve was obtained. The result shows that the axial contact stiffness of preloaded double-nut ball screws is higher than that of single-nut ball screws. Ball number, contact angle and curvature rati
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16

Gao, Xiangsheng, Yueyang Guo, Min Wang, and Tao Zan. "Further study on thermal deformation reduction for CFRP-based improved ball screws." Advanced Composites Letters 29 (January 1, 2020): 2633366X2091798. http://dx.doi.org/10.1177/2633366x20917981.

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To determine the thermal deformation of ball screw in actual working condition, a novel method for determining thermal deformation of ball screws in complicated working condition is proposed based on G-code and finite-element (FE) method. In the complicated working condition, it is difficult to obtain and import the nut movement into FE model due to the complex nut movement. In this research, the nut movement is directly determined from G-code by MATLAB code programming. The nut location is recorded with time in a file. The thermal parameters can be determined according to the nut speed with t
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17

Zhang, Lu-Chao, and Li Zu. "A new method to calculate the friction coefficient of ball screws based on the thermal equilibrium." Advances in Mechanical Engineering 11, no. 1 (2019): 168781401882073. http://dx.doi.org/10.1177/1687814018820731.

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Based on the theory of thermal transmission, this article provides a new method to acquire the friction coefficient in ball screw mechanism. While the screw is in thermal equilibrium, the heat absorption is equal to the heat dissipation. The heat absorption is able to be achieved by calculating the heat energy due to the friction at the contact area and the heat dissipation can be calculated by the law of thermodynamics. When the temperature rise is determined, the heat dissipation can be obtained and the friction coefficient in ball screw mechanism can be calculated further. In order to confi
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18

Abdulin, R. R., V. V. Bolshakov, A. S. Zudilin, et al. "On Developing an Electromechanical Drive Equipped with a Ball Screw Protected from Jamming." Herald of the Bauman Moscow State Technical University. Series Mechanical Engineering, no. 6 (135) (December 2020): 66–82. http://dx.doi.org/10.18698/0236-3941-2020-6-66-82.

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At present, one of the most pressing issues is the problem of improving electromechanical drive reliability, specifically, eliminating the possibility of jamming in the ball screw. The paper proposes an engineering solution designed to replace expensive imported ball screws. We analysed alternative designs intended to improve electromechanical drive reliability. We proposed and patented a ball screw design featuring a separator, in which the nut acts as a piston. The structure consists of a smooth cylindrical body and a slotted separator, its slots positioned along a helical line with a step e
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19

Brecher, Christian, Florian Kneer, Alexander Steinert, Jakob Weber, and Stephan Neus. "Neuer Simulationsansatz für Maschinenkomponenten/New simulation approach for machine components – Coupled thermo-mechanical calculation of ball screws." wt Werkstattstechnik online 112, no. 05 (2022): 297–301. http://dx.doi.org/10.37544/1436-4980-2022-05-27.

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Aufgrund des hohen Wirkungsgrads und der hohen Positioniergenauigkeit und Steifigkeit sind Kugelgewindetriebe die am häufigsten eingesetzten Vorschubantriebe moderner Werkzeugmaschinen. Zur Verbesserung der Auslegung und Optimierung von Kugelgewindetrieben wird in diesem Beitrag ein Simulationsansatz vorgestellt, der es ermöglicht, den Zusammenhang zwischen der durch Reibung entstehenden Verlustleistung und der Erwärmung im Kugelgewindetrieb abzubilden. Dazu wird ein Reibmodell verwendet, das sich bei der Betrachtung von Spindellagern bewährt hat. Die Übertragbarkeit des Reibmodells auf Kugelg
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20

Zapłata, J. "Measurements of Temperature of CNC Machine Tool Ball Screw Utilising IR Method." International Journal of Applied Mechanics and Engineering 22, no. 3 (2017): 769–77. http://dx.doi.org/10.1515/ijame-2017-0049.

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AbstractIn numerous papers it is proposed to use IR measurements of feed axis ball screw temperature distribution in order to compensate CNC machine tool thermal errors. The paper aims to validate reliability of the IR measurements in application to the feed axes ball screws. The identification of key factors influencing the accuracy of the IR measurements of ball screw temperature distribution has been conducted. A test-bench utilizing a ball screw assembly with built-in temperature sensors was introduced and the experimental data are presented along with conclusions.
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21

Zhou, Chang-Guang, Hu-Tian Feng, and Yi Ou. "A new model for predicting the mechanical efficiency of ball screws based on the empirical equations for the friction torque of rolling bearings." Advances in Mechanical Engineering 10, no. 9 (2018): 168781401880017. http://dx.doi.org/10.1177/1687814018800173.

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Based on the empirical equations for the friction torque of rolling bearings, this article proposes a new model for predicting the friction torque and mechanical efficiency of ball screws. Meanwhile, a novel measuring system is constructed to obtain the mechanical efficiency of ball screws, where both the axial load and rotational speed are stable and adjustable. The experimental results at a rotational speed of 1000 r/min agree well with the theoretical values calculated by the present method, which show that the mechanical efficiency of ball screws increases with increasing axial load. Moreo
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22

Oyanguren, Aitor, Ibai Ulacia, Jon Larrañaga, Angel Gallo, Aitor Arana, and Roberto González. "Prediction of Heat Generation and Temperature Distribution in High Speed Preloaded Ball Screws." Key Engineering Materials 572 (September 2013): 363–66. http://dx.doi.org/10.4028/www.scientific.net/kem.572.363.

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The general trend in the field of machine tools is to increase the speed of feed axes with the aim of reducing manufacturing times, high speed machining is a significant example of such increase. Ball screws have proven their ability to fulfill requirements of workpiece positioning accuracy, nevertheless, the heat generated in the screw-nut interaction increases proportionally with the speed of the axes. As a result, an increase in temperature takes place, which causes thermal expansion of the ball screw, producing positioning errors and decreasing the service life of the ball screws, therefor
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23

Wang, Kai, Chang-guang Zhou, and Yi Ou. "Investigation of the fluctuation of the static axial rigidity for double-nut preloaded ball screws." Advances in Mechanical Engineering 11, no. 1 (2019): 168781401882218. http://dx.doi.org/10.1177/1687814018822181.

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This article aims to investigate the fluctuation of the static rigidity for preloaded ball screws. Based on the correlation between preload and friction torque, a new model to calculate the contact rigidity by friction torque is proposed. Meanwhile, a novel test bench is constructed to measure the static stiffness at different positions. The experimental results agree well with the theoretical values, which proves the validity of the model. Furthermore, it is found that the screw shaft rigidity has the greatest influence on the system stiffness fluctuation, compared to the bearing rigidity, an
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Zhou, Huaxi, Changguang Zhou, Yi Ou, and Zeng-Tao Chen. "Recalculation of the basic static load of ball screws." Advances in Mechanical Engineering 11, no. 7 (2019): 168781401986269. http://dx.doi.org/10.1177/1687814019862698.

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Based on the correction factor of accuracy applied in ISO standard 3408-4:2006, this article proposed a modified method to calculate the effective ball number and basic static load rating of ball screws. Meanwhile, the basic static load rating of ball screws was obtained through a new measurement method presented in this article. The experimental results, agreeing well with the theoretical values calculated by the modified method, showed that there is a large discrepancy between the basic static load rating calculated by the traditional method and the measured result, which proves that the new
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25

SHIMODA, Hirokazu, and Minoru IZAWA. "Characteristics of oscillatory ball screws. (1st report Oscillatory friction torque of preloaded ball screws with shim plates)." Transactions of the Japan Society of Mechanical Engineers Series C 53, no. 491 (1987): 1495–99. http://dx.doi.org/10.1299/kikaic.53.1495.

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Sun, Tiewei, Min Wang, Xiangsheng Gao, and Yingjie Zhao. "Non-Hertzian Elastohydrodynamic Contact Stress Calculation of High-Speed Ball Screws." Applied Sciences 11, no. 24 (2021): 12081. http://dx.doi.org/10.3390/app112412081.

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In order to eliminate the calculation error of the Hertzian elastohydrodynamic contact stress due to the asymmetry of the contact region of the helix raceway, a non-Hertzian elastohydrodynamic contact stress calculation method based on the minimum excess principle was proposed. Firstly, the normal contact stresses of the screw raceway and the nut raceway were calculated by the Hertzian contact theory and the minimum excess principle, respectively. Subsequently, the Hertzian solution and the non-Hertzian solution of the elastohydrodynamic contact stress could be determined by the Reynolds equat
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27

Shin, Geon-Ho, and Jang-Wook Hur. "A New Finite Element Analysis Model to Estimate Contact Stress in Ball Screw." Applied Sciences 12, no. 9 (2022): 4713. http://dx.doi.org/10.3390/app12094713.

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A ball screw is a mechanical part that converts rotational motion into translational motion, but when it receives an excessive axial load, permanent deformation occurs inside. As ball screws are mostly used for precise driving, permanent deformation has a fatal effect on the operation of the system. As this permanent deformation mostly occurs on the contact surface between the ball and other parts, it is necessary to observe the change of internal stress caused by the contact of the parts in order to determine whether permanent deformation occurs. Theoretical calculations or finite element ana
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28

Yin, Chen, Yulin Wang, Yan He, Lu Liu, Yan Wang, and Guannan Yue. "Early fault diagnosis of ball screws based on 1-D convolution neural network and orthogonal design." Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability 235, no. 5 (2021): 783–97. http://dx.doi.org/10.1177/1748006x21992886.

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Ball screws, the most frequently used mechanical components to transform rotary motion into linear motion, can directly affect the precision and service life of engineering machines. Once the efficiency and accuracy of ball screws degrades, the performance and safety of machines are hard to guarantee. Conventional fault diagnosis researches of ball screws are mainly focused on ordinary faults such as preload loss and wear, and lack of the researches on early faults such as lubrication degradation which may progress into the ordinary faults. Additionally, the fault diagnosis models proposed in
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29

Shin, Yan Chen, Yi Cheng Huang, and Jen Ai Chao. "Diagnosis of Ball Screw Preload Loss by Vibration Signals through the Hilbert-Huang Transform and Multiscale Measure." Applied Mechanics and Materials 58-60 (June 2011): 636–41. http://dx.doi.org/10.4028/www.scientific.net/amm.58-60.636.

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This paper proposes a diagnosis method of ball screw preload loss through the Hilbert-Huang Transform (HHT) and Multiscale entropy (MSE) process when machine tool is in operation. Maximum dynamic preload of 2% and 4% ball screws are predesigned, manufactured and conducted experimentally. Vibration signal patterns are examined and revealed by Empirical Mode Decomposition (EMD) with Hilbert Spectrum. Different preload features are extracted and discriminated by using HHT. The irregularity development of ball screw with preload loss is determined and abstracting via MSE based on complexity percep
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Lipkin, H., and J. Duffy. "Sir Robert Stawell Ball and methodologies of modern screw theory." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 216, no. 1 (2002): 1–11. http://dx.doi.org/10.1243/0954406021524828.

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The theory of screws was largely developed by Sir Robert Stawell Ball over 100 years ago to investigate general problems in rigid body mechanics. Nowadays, screw theory is applied in many different but related forms including dual numbers, Plilcker coordinates and Lie algebra. An overview of these methodologies is presented along with a perspective on Ball. Screw theory has re-emerged after a hiatus to become an important tool in robot mechanics, mechanical design, computational geometry and multi-body dynamics.
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31

Frey, S., M. Walther, and A. Verl. "Periodic variation of preloading in ball screws." Production Engineering 4, no. 2-3 (2010): 261–67. http://dx.doi.org/10.1007/s11740-010-0207-8.

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32

Puiu, George Constantin, and Vasile Puiu. "The Influence of the Operating Conditions on the Lubrication Regimes of Ball Screws." Applied Mechanics and Materials 371 (August 2013): 581–85. http://dx.doi.org/10.4028/www.scientific.net/amm.371.581.

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In point contact related applications (ball bearings, ball-screws) the minimum and the central film thickness of lubricant have a particular importance. The literature presents various numerical solutions to determine these parameters in the case of elliptical contacts [1-4]. Most of them refer to the fully developed elastohydrodynamic lubrication regime (EHD). Hamrock [5] proposes four different lubrication regimes depending on the size and importance of two physical phenomena that occur in contact: elastic deformation of the bodies in contact under a given load and lubricant viscosity variat
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33

Watanabe, Kota, Morio Matsumoto, Takashi Tsuji, et al. "Ball tip technique for thoracic pedicle screw placement in patients with adolescent idiopathic scoliosis." Journal of Neurosurgery: Spine 13, no. 2 (2010): 246–52. http://dx.doi.org/10.3171/2010.3.spine09497.

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Object The aim in this study was to evaluate the efficacy of the ball tip technique in placing thoracic pedicle screws (TPSs), as compared with the conventional freehand technique, in both a cadaveric study and a clinical study of patients with adolescent idiopathic scoliosis. Although posterior spinal surgery using TPSs has been widely applied, these screws are associated with the potential risk of vascular, pulmonary, or neurological complications. To further enhance the accuracy and safety of TPS placement, the authors developed the ball tip technique. Methods After creating an appropriate
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34

Zhang, Lu-Chao, Yi Ou, and Hu-Tian Feng. "Prediction of the Thermal Elongation of the Ball Screw Mechanism under Various Rotational Speeds." International Journal of Precision Engineering and Manufacturing 22, no. 7 (2021): 1221–28. http://dx.doi.org/10.1007/s12541-021-00535-9.

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AbstractIn numerical control machines, the thermal elongation of the ball screw influences the position accuracy. Different rotational speeds lead to different temperature changes at different positions in a ball screw system. In this paper, a new method is proposed to calculate the temperature rise of different positions when the ball screw is in the thermal equilibrium state. The thermal transmission of ball screws is analyzed, and the heat generation and transfer coefficient are calculated based on the laws of thermodynamics. The function between the temperature rise and position is built b
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35

Barbu, Stefan, Dorin Telea, and Ilie Octavian Popp. "Study on Improving the Functional Performance of Linear Motion Systems." Applied Mechanics and Materials 760 (May 2015): 583–88. http://dx.doi.org/10.4028/www.scientific.net/amm.760.583.

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In the construction of high performance mechanical transmission with high precision in movement and positioning are used ball screws with preloaded double nuts. Among the factors that influence the performance of these transmissions are friction idle torque and friction load torque. Because, theoretically, the friction idle torque is influenced only by the preload force that loading, the double nut of the ball screw, was experimentally determined dependence of that torque of screw speed. Given the set was determined and exposed in the present work, the relation of dependency, idle friction tor
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36

Luo, Liang, Weimin Zhang, Haonan Sui, and Jürgen Fleischer. "An Electromechanical Co-Simulation Model Based on Lumped Parameter Model of Ball Screw Feed Drive System." MATEC Web of Conferences 237 (2018): 03007. http://dx.doi.org/10.1051/matecconf/201823703007.

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The continuous search for efficiency put forward higher requests to the machine tool for high speed and high acceleration, which makes the large-size and lightweight-designed feed drive system more likely to produce vibration during high-speed and high-acceleration feed operation. Ball screw feed system is the most widely used linear drive system in the field of industrial automation. Electromechanical Co-Simulation for ball screw feed drive dynamics is an important technique for solving vibration problems occurs in the feed motion. In view of the shortcomings of the current dynamic simulation
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37

Stoica, A., and G. Stan. "Influence of the ball screw stiffness on the positioning accuracy of the CNC machine tools." IOP Conference Series: Materials Science and Engineering 1182, no. 1 (2021): 012076. http://dx.doi.org/10.1088/1757-899x/1182/1/012076.

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Abstract This work is researching the ball screw stiffness influence on the positioning accuracy of the feed kinematic linkage of a CNC machine tool fitted with an indirect type measuring system for positioning the moving element. Because the machine tool is equipped with an indirect measuring system, backlashes and elastic deformations in the kinematic linkage cannot be offset by the position loop, consequently these are directly affecting the positioning accuracy. In this context, methods are used for diminishing their influence as well as compensation methods with a view to improve the posi
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38

Chen, Yong Jiang, Wen Cheng Tang, and Shi Gen Zhang. "Nonlinear Dynamics Behaviors of Ball Screws with Preload Considered." Advanced Materials Research 510 (April 2012): 304–9. http://dx.doi.org/10.4028/www.scientific.net/amr.510.304.

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In order to improve the vibration problem arise when rotational speed of a ball screw is increased, an analytical model is proposed to study the nonlinear dynamic behavior of the ball screw with preload considered. The contact force of each rolling element described according to nonlinear Hertzian contact deformation and the re-circulating mechanism has been taken in to account. A end-type ball screw is selected as an example, the methods of Runge-Kutta-fehlberg is used to solve the equations of motions numerically. It was found that the preload can be useful in controlling the vibration of th
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39

IZAWA, Minoru, Hirokazu SHIMODA, and Kazuya MATSUDA. "On a dustproof seal and wiper for ball screws. (1st report Dustproof performance of several wipwers for ball screws)." Transactions of the Japan Society of Mechanical Engineers Series C 53, no. 491 (1987): 1477–81. http://dx.doi.org/10.1299/kikaic.53.1477.

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UEDA, Masahiro, and Hirokazu SHIMODA. "Influence of Ball Behavior in Ball Screws on Lost Motion (1st Report)." Journal of the Japan Society for Precision Engineering 76, no. 12 (2010): 1371–76. http://dx.doi.org/10.2493/jjspe.76.1371.

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41

Dohotaru, Ion, and Maxim Casian. "Geometric Aspects and Particularities in the Functioning of a Reductor with Balls." Applied Mechanics and Materials 657 (October 2014): 500–503. http://dx.doi.org/10.4028/www.scientific.net/amm.657.500.

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Benefits of mechanism with balls are to promote their interests in different aspects in different fields of modern technology. May be remarked considerable success in screws with balls, guides, couplings etc. Are in the ascendancy searches for optimal solutions in speed-reducers with balls. One of the possible contributions to the research for technical solutions in this area is presented below. It shows the geometric particularities and configuration of a spherical ball transmission, constructive modeling and simulation of function. On an outside spherical surface of one wheel there is a sine
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42

Akimov, O., V. Boiarov, M. Zhdaniuk, R. Kholodnyi, and S. Pankov. "DEVELOPMENT OF METHODS OF RELIABILITY ASSESSMENT FOR TURRET BALL BEARING RING OF A BMP-2 INFANTRY FIGHTING VEHICLE." Наукові праці Державного науково-дослідного інституту випробувань і сертифікації озброєння та військової техніки, no. 9 (December 3, 2021): 4–9. http://dx.doi.org/10.37701/dndivsovt.9.2021.01.

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A large part of BMP-2 Infantry Fighting Vehicles needs to replace turret ball bearing rings. Under realization of replacement of spare parts and components made in Russia with domestic ones, KNVO "Fort" MVO Ministry of Internal Affairs of Ukraine made an experimental batch of balls for turret ball bearing rings of infantry fighting vehicles BMP type. As a result of modernization of a turret ball bearing ring, steel balls were replaced with balls made of composite material.
 A turret ball bearing is a large radial thrust bearing, cages of which are turret races. A stabile lower race is fix
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43

Ohmata, Kenichiro, Hirokazu Shimoda, and Nobuyuki Okamura. "VI-3 Wave power generator utilizing ball screws." Ocean Engineering 12, no. 6 (1985): 589. http://dx.doi.org/10.1016/0029-8018(85)90059-9.

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44

Zhang, Zuo Ying, Wan Li Zhang, and Chi Xu. "Research on the Impact between Balls and Re-Circulating Mechanism of Ball Screws." Applied Mechanics and Materials 551 (May 2014): 370–77. http://dx.doi.org/10.4028/www.scientific.net/amm.551.370.

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A Mechanical model of impact and contact between the ball and re-circulating mechanism in ball screw was brought forward according to the Hertz contact model and classical impact theory, along with the joint relationship of re-circulating mechanism and nut taken into account. Then the formula of the impact force and contact time was induced, which the elastic coefficient of restitution was considering in contact time calculation. Moreover, a special test unit was designed for contact time measurement and the contact time was measured. The result indicates that the new model proposed in this pa
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Bogutsky, Vladimir, Leonid Shron, and Yury Novosyolov. "Building a model of the process of grinding screws for ball-screw transmission." IOP Conference Series: Materials Science and Engineering 971 (December 1, 2020): 022087. http://dx.doi.org/10.1088/1757-899x/971/2/022087.

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46

Ding, Xia, Yu Hong Gai, Bao Min Li, and Mu Sen Li. "Study on the Induction Quenching Process and Fatigue Testing for Cr-Mo Steel Ball Screw." Advanced Materials Research 1145 (March 2018): 154–59. http://dx.doi.org/10.4028/www.scientific.net/amr.1145.154.

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Due to the deficiencies such as shallow hardened layer and short fatigue life of the ball screws treated by the traditional induction quenching process, a new process has been developed. The new induction quenching process has four-turn induction coil. The power of the this process is 150-160kw, feeding speed 270mm/min and the spraying cooling water distance is 35mm. It has been successfully used on the Cr-Mo steel ball screw with a diameter of 80 mm. The microstructure and hardness distribution of the induction hardened layers were investigated by a metallographic microscope and a micro-hardn
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Brecher, C., T. Frenken, M. Hildebrand, and M. Fey. "Berechnung von Planetenrollengewindetrieben*/Calculation of Planetary Roller Screws – Calculation methods for the analytical description of roller contacts of planetary roller screws." wt Werkstattstechnik online 109, no. 05 (2019): 365–69. http://dx.doi.org/10.37544/1436-4980-2019-05-67.

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Planetenrollengewindetriebe finden aufgrund ihrer hohen Tragfähigkeit Anwendung in Bereichen, in denen Kugelgewindetriebe an ihre Lastgrenzen stoßen. Durch ihren durchschnittlich geringeren Wirkungsgrad ist die übertragbare Leistung jedoch begrenzt. Um ein Berechnungsmodell für Planetenrollengewindetriebe zu entwickeln, wurden die Kontaktflächen des Gewindetriebes analytisch angenähert und die Zusammenhänge der in den Kontaktpunkten herrschenden Bedingungen untersucht.   Due to their high load carrying capacity, planetary roller screws are used in areas where ball screws reach their l
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Ro, P. I., and P. I. Hubbel. "Model Reference Adaptive Control of Dual-Mode Micro/Macro Dynamics of Ball Screws for Nanometer Motion." Journal of Dynamic Systems, Measurement, and Control 115, no. 1 (1993): 103–8. http://dx.doi.org/10.1115/1.2897383.

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A desire to improve the positioning accuracy of ball screws prompted an investigation into the dynamics of nanometer motion. Characterization of the ball screw indicated that nanometer motion is possible prior to friction breakaway via elastic deformation of the frictional contacts while macroscopic motion involves slipping across the friction interfaces. The observed dynamics are nonlinear, and consequently result in inconsistent and unpredictable closed-loop response while under PI position control. The ball-screw can be modeled in two stages: The microdynamic stage includes “elastic” fricti
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Zhao, Leilei, Hutian Feng, and Jun Jin. "A modified ball screw lapping method and optimized lapping factors for ideal surface quality." Mechanical Sciences 9, no. 2 (2018): 221–30. http://dx.doi.org/10.5194/ms-9-221-2018.

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Abstract. In order to meet the high precision requirement in various mechanical applications, ball screws are being lapped as a finishing process to improve the travel variation and surface quality. However, the existing manufacturing method is labor intensive. It depends on an operator's skill and experience and is very complex, time consuming with low production efficiency. The aim of this study is finding a modified lapping method to improve the lapping effect, increase efficiency and change the present labor-intensive situation. In addition, the effects of main lapping factors on the surfa
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Brecher, Christian, Thomas Frenken, Gabriel Axelrad, and Stephan Neus. "Lastverteilung in Planetenrollengewindetrieben/Description of the load distribution in planetary roller screws." wt Werkstattstechnik online 110, no. 05 (2020): 322–27. http://dx.doi.org/10.37544/1436-4980-2020-05-54.

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Planetenrollengewindetriebe finden aufgrund ihrer hohen Tragfähigkeit Anwendung in Bereichen, in denen Kugelgewindetriebe an ihre Lastgrenzen stoßen. Um ein Berechnungsmodell für Planentenrollengewindetriebe zu entwickeln, wurden Berechnungsmethoden zur Beschreibung der Lastverteilung innerhalb des Planetenrollengewindetriebs entwickelt. Mit diesen lassen sich die in den einzelnen Kontaktpunkten wirkenden Kräfte sowie die Verlagerungen des Gewindetriebs bestimmen. Die Berechnungsergebnisse werden unter anderem für die Berechnung der statischen axialen Steifigkeit und der Ermüdungslebensdauer b
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