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1

Kaya, Yahya, Veysel Kobya, Ali Mardani, Naz Mardani, and Hatice Elif Beytekin. "Effect of Grinding Conditions on Clinker Grinding Efficiency: Ball Size, Mill Rotation Speed, and Feed Rate." Buildings 14, no. 8 (2024): 2356. http://dx.doi.org/10.3390/buildings14082356.

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The production of cement, an essential material in civil engineering, requires a substantial energy input, with a significant portion of this energy consumed during the grinding stage. This study addresses the gap in the literature concerning the collective impact of key parameters, including ball size, feed rate, and mill speed, on grinding efficiency. Nine spherical balls, ranging from 15–65 mm, were utilized in six distinct distributions, alongside varying feed rates and mill speeds. ANOVA, Taguchi, and regression analyses were employed to explore their influence on grinding efficiency and
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2

Liu, Chang, Chunyu Zhao, Zhendong Liu, and Shuai Wang. "Dynamic Analysis of Ball Screw Feed System with the Effects of Excitation Amplitude and Design Parameters." Applied Sciences 11, no. 15 (2021): 7070. http://dx.doi.org/10.3390/app11157070.

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In this paper, a nine degree-of-freedom dynamic model of the ball screw feed system considering the contact nonlinearity between balls and raceways is established to analyze the vibration characteristics. The position relationship between raceway centers for the ball screw and bearings is determined by using the homogeneous coordinate transformation, and then the restoring force functions along the axial and lateral directions are derived. The dynamic equations of the feed system are solved by using Newmark method, and the proposed model is verified by the experimental method. Furthermore, the
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3

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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4

HINTON-BARBER, PATRICK, and HONGHI TRAN. "How do mud balls form in lime kilns?" April 2023 22, no. 4 (2023): 258–67. http://dx.doi.org/10.32964/tj22.4.258.

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Mud ball formation in lime kilns has been a persistent problem in many kraft mills, particularly for older kilns that are equipped with chains. A systematic laboratory study was conducted to examine how mud balls are formed and the key factors that affect ball formation. The results confirm the general mill experience that high moisture and high sodium contents in lime mud are the main contributing factors to ball formation. The high moisture content allows lime mud to agglomerate and grow to form balls, while the high sodium content helps make the balls hard and retain their shape. A ball for
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5

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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6

Hlabangana, N., G. Danha, and E. Muzenda. "Effect of ball and feed particle size distribution on the milling efficiency of a ball mill." South African Journal of Chemical Engineering 25 (February 9, 2018): 79–84. https://doi.org/10.1016/j.sajce.2018.02.001.

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In this article, alternative forms of optimizing the milling efficiency of a laboratory scale ball mill by varying the grinding media size distribution and the feed material particle size distribution were investigated. Silica ore was used as the test material. The experimental parameters that were kept constant in this investigation was the grinding media filling, powder filling and the mill rotational speed. The data obtained from these batch tests was then analyzed using a model free technique called the Attainable Region method. This analysis technique showed that the required product fine
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7

Sepriadi, Sepriadi, Isdaryanto Iskandar, and M. Ari Wijaya. "THE EFFECT OF DRUM SPEED ON TIME AND GRAIN SIZE RESULTS FROM THE MILLING PROCESS." International Journal of Social Science 2, no. 4 (2022): 1853–64. http://dx.doi.org/10.53625/ijss.v2i4.4163.

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Grinding/crushing is a process of reducing the size in a crushing plant to get the desired size. The coal ball mill technique is where the ball collides with the feed on the tube wall, thus cracks will form in the feed which will result in a smaller size. Limitation of the problem in this study is the effect of speed on time and grain size resulting from the milling process, the mass of the sample used is 500 grams with grain sizes that do not pass a 10 mesh sieve, there are three types of pulley variations, namely, pulleys of 2 inch, 4 inch. , and 20 inches with a ball as a control using 10 u
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8

Li, Chen, Cui Ping Liu, and Zhe Wang. "Model Reference Adaptive Modeling Method of Ball Screw Feed System." Applied Mechanics and Materials 543-547 (March 2014): 1409–12. http://dx.doi.org/10.4028/www.scientific.net/amm.543-547.1409.

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A model reference adaptive modeling method of ball screw feed system is proposed. Using a low-level system with excellent dynamic characteristics as the reference model and ball screw feed system as the controlled object, this paper establishes model reference adaptive system by Narendra program, achieving exact match between the adjustable system and the reference model through experiment and deriving the low-level model of the ball screw feed system. Then taking the X axis of X-Y work table as an example, a second-order model of the ball screw feed system is established by this method. When
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9

Yuan, Chengfang, Caibin Wu, Li Ling, et al. "Ceramic Grinding Kinetics of Fine Magnetite Ores in the Batch Ball Mill." Minerals 13, no. 9 (2023): 1188. http://dx.doi.org/10.3390/min13091188.

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Aiming to reveal the kinetic characteristics of ceramic ball grinding of fine magnetite comprehensively, two types of ceramic balls ground with the same filling rate and total weight as steel balls were researched. The results show that the breakage rate of ceramic ball grinding is only half of that of steel ball grinding with the same media filling rate. With the same total media weight and a feed size less than 0.212 mm, the breakage rate of the ceramic ball grinding approaches the steel ball grinding and is 17.14% higher than that of the steel ball grinding. The main crushing form of magnet
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10

Huang, Jun, Zhen Hua Wang, and Jun Tang Yuan. "Analysis of Dynamic Characteristics of the Dual Ball Screw-Driven Linear Feed System in Z Direction." Applied Mechanics and Materials 470 (December 2013): 593–97. http://dx.doi.org/10.4028/www.scientific.net/amm.470.593.

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The vibration modals and harmonic responses of the dual ball screw-driven feed system in Z direction are analyzed by the software ANSYS. In this paper, the equivalence of characteristics of fixed and rolling joints is emphasized, while the influence of joint faces on the dual ball screw-driven feed system is analyzed. In addition, the FEM results of spindle and spindle box connecting the feed system are compared with the modal testing value. The results show that the relative errors between corresponding order natural frequency and the test results are within 10%, which verified the accuracy o
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11

Gao, Feng, Pan-Pan Li, and Yan Li. "Dynamic analysis of ball screw feed system with abrupt-change-nonlinear drive stiffness." Industrial Lubrication and Tribology 73, no. 10 (2021): 1258–66. http://dx.doi.org/10.1108/ilt-06-2021-0196.

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Purpose For ball screw feed system, a sudden start or stop has a great influence on the transmission stiffness, so the axial stiffness mutation of feed system will occur. The purpose of this paper is to study the influence of acceleration on the transmission stiffness and dynamic characteristics of the ball screw feed system. Design/methodology/approach Taking the ball screw feed system as a research object, on the basis of the Hertz contact theory and the mixed element method, axial stiffness model and dynamic model are established. And the system stability was analyzed by the time history di
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12

Ma, Chi, Jun Yang, Xue Song Mei, Liang Zhao, Hu Shi, and Dong Sheng Zhang. "Dynamic Thermal-Structure Coupling Analysis and Experimental Study on Ball Screw Feed Drive System of Precision Machine Tools." Applied Mechanics and Materials 868 (July 2017): 124–35. http://dx.doi.org/10.4028/www.scientific.net/amm.868.124.

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To improve the simulation accuracy of the thermal characteristic of ball screw feed drive systems, a dynamic thermal-structure coupling model, which considered the effect of the thermal contact conductance (TCC) of the solid joint on the accuracy of simulation results, was proposed to conduct thermal characteristic analysis of ball screw feed drive systems. The predictive model for TCC was proposed based on the micro morphology description of rough surfaces and the contact load distribution of solid joints. Then, the dynamic thermal-structure model of the ball screw feed drive system was estab
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13

Liu, Hongliang, Zhaofeng Rao, Ruda Pang, and Yaoman Zhang. "Research on Thermal Characteristics of Ball Screw Feed System Considering Nut Movement." Machines 9, no. 11 (2021): 249. http://dx.doi.org/10.3390/machines9110249.

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The heat generated by the ball screw feed system will produce thermal errors, which will cause the positioning accuracy to decrease. The thermal simulation modeling of the ball screw feed system is the basis for compensating thermal errors. The current thermal characteristic modeling method simplifies the reciprocating movement of the nut pair on the screw shaft to varying degrees, which leads to a decrease in simulation accuracy. In this paper, the nut is regarded as a moving heat source, and a novel method is adopted to make the moving process of the heat source closer to the actual nut move
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14

Shi, Yi Guang, Hui Xiao, Jun Ao Zhang, and Da Wei Zhang. "The Analysis of Influence Factors about Dynamic Characteristics of a Ball Screw Feed Drive System." Applied Mechanics and Materials 799-800 (October 2015): 576–80. http://dx.doi.org/10.4028/www.scientific.net/amm.799-800.576.

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This paper presents relationships between some vital parameters and the natural frequency of the ball screw feed drive system. A finite element model (FEM) of a machine tool feed drive system is established with joint parameters added in based on the SAMCEF software. Using the finite element model, the influences of the material properties of the worktable, the diameter of the ball screw and joint parameters on the natural frequency of axial vibration are derived. These results provide a reliable basis for the optimization design of the ball screw feed drive system.
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15

Hirama, Shota, Takayuki Ikeda, Shiori Gondo, Shohei Kajikawa, and Takashi Kuboki. "Ball Spin Forming for Flexible and Partial Diameter Reduction in Tubes." Metals 10, no. 12 (2020): 1627. http://dx.doi.org/10.3390/met10121627.

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This paper proposed a new ball spin forming equipment, which can form a reduced diameter section on the halfway point of a tube. The effects of forming process parameters on the surface integrity and deformation characteristics of the product were investigated. The proposed method can reduce the diameter in the middle portion of the tube, and the maximum diameter reduction ratio was over 10% in one pass. When the feed pitch of the ball die was more than 2.0 mm/rev, spiral marks remained on the surface of tube. Torsional deformation, axial elongation and an increase in thickness appeared in the
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16

Long, Ze Ming, S. Q. Guo, G. J. Chen, and F. Xiao. "Research on Compound Servo Drive Control of Heavy Loading Feed Table." Advanced Materials Research 188 (March 2011): 212–15. http://dx.doi.org/10.4028/www.scientific.net/amr.188.212.

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This paper described a new compound servo drive structure and control method of heavy loading feeding table. Feed and location of table are controlled by ball screw through the Servo motor, who’s mainly responsibility is for the movement positioning accuracy of the feed table; Moreover, the table has added a set of servo-hydraulic cylinder driver assistance systems. The two systems are synchronized by the mutual control, the stress situation and wear of the ball screw servo feed with the heavy loading can be improved, thus the dynamic response characteristics and long-term positioning accuracy
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17

Yuan, Chengfang, Caibin Wu, Li Ling, et al. "Effect of Intensive Abrasion Breakage on Secondary Ball Mills for Magnetite." Minerals 13, no. 6 (2023): 713. http://dx.doi.org/10.3390/min13060713.

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In order to investigate the breakage behavior of the feed in industrial secondary ball mills, the breakage characteristics of fine magnetite were analyzed. Magnetite particle breakage produces a bimodal particle size distribution that is consistent with the typical breakage characteristics of abrasion. The secondary ball mill can increase the surface area by reducing the diameter of steel balls to enhance the abrasion. Industrial application results show that after the abrasion of the secondary ball mill for grinding magnetite was enhanced, the circulating load of the grinding-classification s
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18

Zhang, Huijie, Hui Liu, Chao Du, Dun lv, Jun Zhang, and Wanhua Zhao. "Dynamics analysis of a slender ball-screw feed system considering the changes of the worktable position." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 8 (2018): 2685–95. http://dx.doi.org/10.1177/0954406218799781.

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For a slender ball-screw feed system, the position of the screw–nut joints will change greatly when the moving worktable moves along its whole stroke. Therefore, the compression/tension and torsion stiffness of the screw-shaft on both sides of the screw–nut joints will change. Thus, the system transmission stiffness will also vary and affect its dynamics. In this article, considering the changes of the worktable position and using hybrid element method, a dynamic model was established for the slender ball-screw feed system, and a calculation method of the system stiffness and mass matrix was p
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19

Yu, Hanwen, Xianying Feng, and Qun Sun. "Kinematic analysis and simulation of a new type of differential micro-feed mechanism with friction." Science Progress 103, no. 1 (2019): 003685041987566. http://dx.doi.org/10.1177/0036850419875667.

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This article presents a new micro-feed mechanism, whose main transmission component is the nut–rotary ball screw pair. The screw and nut are driven by two motors, and they rotate in the same direction, with their movements enabling micro-feeding. The main contribution of the micro-feed mechanism is to avoid the inevitable low-speed nonlinear creeping phenomenon caused by the inherent properties of traditional electromechanical servo system structure, thus realizing high precision micro-feed. In this study, the motion state of the working ball is analyzed using the principle of differential geo
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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

Deng, Wen Jun, Wei Xia, Zhao Yao Zhou, Wei Ping Chen, and Yuan Yuan Li. "Finite Element Analysis of Effects of Ball Burnishing Parameters on Residual Stresses." Materials Science Forum 471-472 (December 2004): 658–62. http://dx.doi.org/10.4028/www.scientific.net/msf.471-472.658.

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A three-dimensional coupled thermal-mechanical model of ball burnishing process is developed using commercial explicit finite element code MSC. Marc. The workpiece is modeled as being elastic-plastic, while its flowstress is taken as a function of strain, strain-rate, and temperature. Temperature-dependent material properties are also considered in this analysis. The burnishing ball is considered as rigid and only heat transfer analysis is carried out for it. In the zone of the workpiece and tool contact, the Coulomb friction is taken into account. Effects of ball burnishing parameters (burnis
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22

Frey, S., A. Dadalau, and A. Verl. "Expedient modeling of ball screw feed drives." Production Engineering 6, no. 2 (2012): 205–11. http://dx.doi.org/10.1007/s11740-012-0371-0.

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23

Choi, Y. H., S. M. Cha, J. H. Hong, and Jai Hyuk Choi. "A Study on the Vibration Analysis of a Ball Screw Feed Drive System." Materials Science Forum 471-472 (December 2004): 149–54. http://dx.doi.org/10.4028/www.scientific.net/msf.471-472.149.

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Feed drive system of machine tools may experience serious vibrations or unstable motions during high-speed operation. In this paper, a 6 D.O.F (Degree-Of-Freedom) lumped parameter model was proposed in order to analyze vibrations of a ball screw feed-drive system, which takes planar motion. The equations of motion were derived for the proposed model. Natural frequencies of the system and transient responses due to driving motor speed control input were also analyzed. Experimental modal analysis and operational vibration measurements of a laboratory ball screw feed drive system were made. Both
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24

Wu, Qin, and Jian Jun Yang. "The Vibration Characteristic Analysis of Feed System of CNC Machine Tool." Applied Mechanics and Materials 482 (December 2013): 169–73. http://dx.doi.org/10.4028/www.scientific.net/amm.482.169.

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The mathematical model of feed system of CNC machine tool was established base of Lagrange Equation and energy principle, then uses the Runge-Kutta method to solve the equation, and analyzes the influence that the parameters to the vibration displacement of ball screw. According to the result of orthogonal test, it is concluded that the most important three factors which influence ballscrew vibration displacement were the ball screw's lead h, the table quality m and the longitudinal contact stiffness kn in the connection of workbench and ballscrew. On the feed system test-bed, the longitudinal
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25

Zhang, Huijie, Jun Zha, Chao Du, Hui Liu, Yang Li, and Dun Lv. "Variable-Coefficient Dynamic Modeling Method for a Ball Screw Feed System in the No-Extra-Load Running State." Processes 11, no. 3 (2023): 793. http://dx.doi.org/10.3390/pr11030793.

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In a ball screw feed system of high-speed/high-acceleration machine tools, large frictional and inertial forces may change the real contact state of the kinematic joints, resulting in changes in the contact and transmission stiffnesses and, hence, changes in the dynamic characteristics of the system. In this study, a variable–coefficient dynamic modeling method for a ball screw feed system is proposed, considering the influence of changes in the no-extra-load running states, such as position, speed, and acceleration. Based on Timoshenko beam elements with two nodes and four DOFs, an equivalent
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26

Ma, Limei, Yongheng Zhang, Yuli Niu, et al. "Design and Machining of a Spherical Shell Rotor for a Magnetically Levitated Momentum Ball." Aerospace 11, no. 1 (2024): 61. http://dx.doi.org/10.3390/aerospace11010061.

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Ball-shell rotors with non-standard shapes, non-uniform conductive coatings, and eccentric masses machined by conventional processes constrain the improvement of levitation and torque accuracy of magnetically levitated momentum balls. This paper focuses on the machining method of multilayer ball-shell rotors to develop a ball-shell rotor with a standard shape and uniform conductive coating, which can improve the levitation and torque accuracy of magnetically levitated momentum balls. In this paper, a machining method for multi-coated ball-shell rotors is proposed. The machining process combini
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27

Kim, J. P., J. J. Kim, M. S. Chun, B. R. Min, and K. Y. Chung. "Flux enhancement by glass balls inserted membrane module." Water Supply 1, no. 5-6 (2001): 285–92. http://dx.doi.org/10.2166/ws.2001.0125.

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The glass ball inserted membrane module presented in this study is designed to enhance filtration in a flat sheet membrane. Three different modes of filtration experiments were conducted and compared to demonstrate flux enhancement due to the presence of glass balls: a normal dead-end filtration, a vortex flow filtration, and an enhanced vortex flow filtration using glass balls. In the case of enhanced vortex flow filtration the permeate flux was found to be three times as large as that of the dead-end filtration, and two times larger compared with the vortex flow filtration. In addition, the
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28

He, Pingping. "Research on thermal characteristics of double-nut ball screw." Journal of Physics: Conference Series 2815, no. 1 (2024): 012016. http://dx.doi.org/10.1088/1742-6596/2815/1/012016.

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Abstract Preload, external load, and feed speed have significant effects on thermal characteristics of ball screws. In this paper, ground on friction heat generation theory and Hertz contact theory, a thermodynamic modeling of the double-nut ball screw is established, heat generation under different preload forces and feed speeds is analyzed, and temperature field is estimated based on finite difference method. The results show that preload and feed speed have a obvious impact on screw nuts temperature. The finite difference method makes numerical calculation of temperature field more convenie
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29

Liu, Minghao, Xuan Sun, Baixing Zhang, Kaixuan Qi, Xiangyu Lv, and Chenglin Shi. "Research on linear parameter varying modeling method of ball screw feed system." Journal of Physics: Conference Series 2174, no. 1 (2022): 012071. http://dx.doi.org/10.1088/1742-6596/2174/1/012071.

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Abstract To realize the accurate motion control of the ball screw feed system, it is necessary to establish a reasonable dynamic model. However, the dynamic characteristics of the ball screw feed system are time-varying and nonlinear in practice. Therefore, a Linear Parameter Varying (LPV) modeling method is proposed. Firstly, the rigid body model considering the mechanical and electrical characteristics and the flexible body model considering the change of table position and workpiece mass are established, and the model parameters are further identified. Then, the LPV model is established bas
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30

Yuan, Chengfang, Caibin Wu, Xin Fang, Ningning Liao, Jiaqi Tong, and Chao Yu. "Effect of Slurry Concentration on the Ceramic Ball Grinding Characteristics of Magnetite." Minerals 12, no. 12 (2022): 1569. http://dx.doi.org/10.3390/min12121569.

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Ceramic grinding, which in this paper is defined as a method of using ceramic materials as grinding media, is favored by many processing plants as an emerging high-efficiency and energy-saving grinding method. This paper investigates the effect of slurry mass concentration on the grinding characteristics of magnetite by taking the feed of the secondary ball mill for processing magnetite as the research object. The study results show that the slurry mass concentration significantly affects the ceramic ball grinding characteristics of magnetite, especially for coarse particles. When the grinding
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31

Takatsuto, Mitsuo, Toshiaki Furusawa, Noboru Takada, and Kozo Kishi. "Ball end mill cutting in gradient optimizing feed." Journal of the Japan Society for Precision Engineering 56, no. 2 (1990): 299–304. http://dx.doi.org/10.2493/jjspe.56.299.

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32

Fernandez-Gauna, Borja, Igor Ansoategui, Ismael Etxeberria-Agiriano, and Manuel Graña. "Reinforcement learning of ball screw feed drive controllers." Engineering Applications of Artificial Intelligence 30 (April 2014): 107–17. http://dx.doi.org/10.1016/j.engappai.2014.01.015.

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33

Cik, Agus, Mardiah Mardiah, and Guskarnali Guskarnali. "Kajian Produksi Ball Mill Dalam Menentukan Efektivitas Penggerusan Bijih Timah Primer Di CV Persada Tambang Intitama TK 4.218 Paku Kabupaten Bangka Selatan." MINERAL 5, no. 2 (2020): 1–6. http://dx.doi.org/10.33019/mineral.v5i2.3066.

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CV Persada Tambang Intitama TK 4.218 Paku is a partner company of PT Timah Tbk, which conducts primary tin mining using the open pit method. Primary tin ore processing includes comminution, sizing, and concentration activities. Grinding using a Ball Mill is an advanced process that aims to reduce the grain size of the material in order to obtain finer grain sizes (fine material) and prepare the right grain size for the concentration process of 80 s.d - 200 mesh. In this study, the variables used are feed rate, number of Ball Mill revolutions (RPM), and water rate. The experiment was used 27 ti
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34

Hlabangana, N., G. Danha, and E. Muzenda. "Effect of ball and feed particle size distribution on the milling efficiency of a ball mill: An attainable region approach." South African Journal of Chemical Engineering 25, no. 1 (2018): 79–84. https://doi.org/10.1016/j.sajce.

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In this article, alternative forms of optimizing the milling efficiency of a laboratory scale ball milly varying the grinding media size distribution and the feed material particle size distribution were investigated. Silica ore was used as the test material. The experimental parameters that were kept constant in this investigation was the grinding media filling, powder filling and the mill rotational speed.The data obtained from these batch tests was then analyzed using a model free technique called the Attainable Region method. This analysis technique showed that the required product finenes
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35

Wu, Qin, Jian Jun Yang, and Chun Li Lei. "Modeling and Simulation for the Feed System of CNC Machine." Applied Mechanics and Materials 496-500 (January 2014): 1024–27. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.1024.

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Study the linear and nonlinear stiffness dynamic characteristics of ball screw in feed system. According to the structure and the stiffness of ball screw, considering the influence of damping force, elastic force, friction force, driving force and load, establish the dynamic model of feed system. Use Linz Ted- Poincare (L-P) Method of singular perturbation to solve the model, obtain the quadratic approximate solution of the free vibration, analyze the multiple solution phenomenon of the model, and also conduct the numerical simulation analysis for the model.
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36

Zhu, Jianmin, Tongchao Zhang, Jian Wang, and Xiaoru Li. "Axial dynamic characteristic parameters identification of rolling joints in a ball screw feed drive system." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 230, no. 14 (2015): 2449–62. http://dx.doi.org/10.1177/0954406215597955.

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The dynamic characteristic parameters of mechanical joints are difficult to determine in theoretical modeling, dynamic simulation, and servo controller design for the ball screw feed drive system. Therefore, this study proposes a novel method for identifying the axial stiffness and damping parameters of the rolling joints in an assembled ball screw feed drive system. First, the proposed method deduces the axial vibration equations of the feed drive system with a harmonic excitation force exerted on its worktable. Second, the identification model of the axial stiffness and damping parameters of
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37

Petrakis, Evangelos, and Konstantinos Komnitsas. "Effect of Grinding Media Size on Ferronickel Slag Ball Milling Efficiency and Energy Requirements Using Kinetics and Attainable Region Approaches." Minerals 12, no. 2 (2022): 184. http://dx.doi.org/10.3390/min12020184.

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The aim of this study is to evaluate the effect that the size of grinding media exerts on ferronickel slag milling efficiency and energy savings. A series of tests were performed in a laboratory ball mill using (i) three loads of single size media, i.e., 40, 25.4, and 12.7 mm and (ii) a mixed load of balls with varying sizes. In order to simulate the industrial ball milling operation, the feed to the mill consisted of slag with natural size distribution less than 850 μm. Grinding kinetic modeling and the attainable region (AR) approach were used as tools to evaluate the data obtained during th
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38

Mei, Zaiwu, Liping Chen, and Jianwan Ding. "Multi-domain integrated modeling and verification for the ball screw feed system in machine tools." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 234, no. 14 (2020): 1707–19. http://dx.doi.org/10.1177/0954405420933704.

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An accurate dynamic model for the computer numerical control machine tool feed system is of great significance to improve the machining accuracy. However, the accurate dynamic model of the feed system is difficult to be established because its dynamic characteristics not only depend on the performance of subsystems, such as mechanical, electrical, and control, but also on the interaction between them. In order to solve this problem, a modular modeling method based on a non-causal connection is proposed in this article, and the multi-domain seamless integrated model for the ball screw feed syst
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Chiu, Y. S., C. C. Cheng, W. C. Hsu, and M. H. Huang. "On-Line Monitoring Shaft Misalignment of Feed Drive Systems Based on Time-Domain Shaft Rotating Holospectrum." Shock and Vibration 2023 (February 1, 2023): 1–13. http://dx.doi.org/10.1155/2023/1168991.

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Detection of early-stage misalignment of the ball screw in feed drive systems is the topic addressed in this study. The triaxial vibration amplitudes and phases of a rotating ball screw at the ball screw nut were extracted using the Vold–Kalman filtering order tracking (VKFOT). The rotating ball screw locus at the rotation speed and its multiplier in the time domain were then constructed to obtain corresponding holospectra. By using a self-organizing map, the features corresponding to various holospectra were extracted and quantified into metrices as a measure signifying the severity of ball s
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Min, X., and S. Jiang. "A thermal model of a ball screw feed drive system for a machine tool." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 225, no. 1 (2011): 186–93. http://dx.doi.org/10.1177/09544062jmes2148.

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The feed drive system is a major heat source of machine tools, which results in considerable thermal drift at the tool. Therefore, there is a need to establish a scientific and systematic model that can be used to predict the temperature distribution of the feed drive system. In this research, considering the thermal contact resistance between the bearing and its housing, an integrated thermal model has been developed by the aid of the finite-element method to analyse the temperature distribution of a ball screw feed drive system, in particular the theoretical determination of power losses cau
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Li, Yang, Dongxu Su, Xin Cai, Wenwu Wu, Jun Zhang, and Wanhua Zhao. "Temperature simulation and thermal equilibrium analysis of the ball screw feed drive system under various working conditions." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 234, no. 24 (2020): 4844–56. http://dx.doi.org/10.1177/0954406220929051.

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As one of the most important part of the machine tool, thermal behaviors of the ball screw feed drive system has great effect on the positioning accuracy and machining accuracy. Finite element method is widely used for simulating the temperature of the ball screw under various working conditions. In this paper, in order to improve the simulation accuracy, the moving heat loads are considered in the finite element model, and the response surface methodology is proposed to optimize the boundary conditions. The correctness and effectiveness of the method are verified by experimental data. In addi
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Du, Fuxin, Xianying Feng, Peigang Li, Jiawei Wang, Zhaoguo Wang, and Chen Yu. "Cross-coupled intelligent control for a novel two-axis differential micro-feed system." Advances in Mechanical Engineering 10, no. 6 (2018): 168781401877462. http://dx.doi.org/10.1177/1687814018774628.

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Nonlinear friction in a conventional drive feed system feeding at low speed is a main factor that contributes to feed drive complexity. A novel two-axis differential micro-feed system is developed in this study to overcome the accuracy limitation of conventional drive feed system. Instead of the screw-rotating-type ball screw adopted in conventional drive feed system, the transmission component of the proposed two-axis differential micro-feed system is a nut-rotating-type ball screw. In this setup, not only the screw but also the nut is driven by a servo motor. By superposing the two high-spee
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Liang, Tao, Dun Lu, Xiaojun Yang, Jun Zhang, Xiaobo Ma, and Wanhua Zhao. "Feed fluctuation of ball screw feed systems and its effects on part surface quality." International Journal of Machine Tools and Manufacture 101 (February 2016): 1–9. http://dx.doi.org/10.1016/j.ijmachtools.2015.11.002.

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Jiang, Bin, Yin Jin Yang, Xian Li Liu, Chang Xing Qi, and Xing Fa Zhao. "Incidence Analysis on Characteristic of High Speed Ball-End Milling Hardened Steel." Advanced Materials Research 188 (March 2011): 73–77. http://dx.doi.org/10.4028/www.scientific.net/amr.188.73.

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In high speed ball-end milling hardened steel, the increase of hardened steel hardness and cutting efficiency make cutting loads changing, and fuzzy and uncertain properties exist in evaluating cutting vibration and machining surface quality. To explore the means for high efficiency and precision machining hardened steel, carried out the experiment of high speed ball-end milling hardened steel, and acquired behavior data of high speed milling characteristic and influencing factors. Founded the model of high speed ball-end milling behavior characteristic using grey system theory, acquired the b
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Lagunova, Yu A., V. S. Shestakov, N. V. Savinova, and A. R. Mukatov. "Effect of increased ball mill feed on steel construction." Mining informational and analytical bulletin, no. 11-1 (2021): 171–78. http://dx.doi.org/10.25018/0236_1493_2021_111_0_171.

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TAKATSUTO, Mitsuo, and Kozo KISHI. "Realization of gradient optimized feed with ball-end-mill." Transactions of the Japan Society of Mechanical Engineers Series C 56, no. 521 (1990): 189–94. http://dx.doi.org/10.1299/kikaic.56.189.

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Zaeh, M. F., Th Oertli, and J. Milberg. "Finite Element Modelling of Ball Screw Feed Drive Systems." CIRP Annals 53, no. 1 (2004): 289–92. http://dx.doi.org/10.1016/s0007-8506(07)60700-8.

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Tanaka, Toshiharu, Jiro Otsuka, and Takaaki Oiwa. "Precision Positioning Control by Modeling Frictional Behaviors of Linear Ball Guideway." International Journal of Automation Technology 3, no. 3 (2009): 334–42. http://dx.doi.org/10.20965/ijat.2009.p0334.

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Positioning devices which are composed with linear ball guideways and a linear motor are increased in recent precision positioning field. However, it is a difficult problem to achieve precision or ultra-precision positioning because rolling frictional force of the linear ball guideways is a disturbance force. Therefore, a frictional compensation is implemented by a controller. In this paper, one-axis positioning apparatus using a voice coil motor as an actuator is constructed. Moreover, several control methods are full-closed loop of measured displacement feed-back, feed-forward control of ref
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Sun, Xuan, Xijun Liu, and Minghao Liu. "Dynamic properties analysis of ball screw feed system based on improved hybrid model." Journal of Physics: Conference Series 2383, no. 1 (2022): 012040. http://dx.doi.org/10.1088/1742-6596/2383/1/012040.

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Ball screws are widely used as feed systems for machine tools due to their high transmission efficiency and long service life. However, the large inertia force generated by the ball screw in high-speed motion will excite its flexible mode and cause system vibration. In the actual working condition, the dynamics of the system will also change with the nut position and workpiece mass. In order to further study the modeling method and dynamic properties of the ball screw feed system, this paper firstly improves the traditional hybrid model by introducing an energy loss factor to modify the hyster
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Zhang, Jun, Bo Li, Changxing Zhou, and Wanhua Zhao. "Positioning error prediction and compensation of ball screw feed drive system with different mounting conditions." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 230, no. 12 (2016): 2307–11. http://dx.doi.org/10.1177/0954405416679444.

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For semi-closed-loop computer numerical control machine tool, the pitch error of screw caused by thermal expansion can deteriorate the positioning accuracy of ball screw feed drive system. This study presents different prediction models for positioning error of ball screw feed drive system based on the mounting condition, where the total error is separated into geometric error and thermal error. The coefficients in the model are identified using the multiple linear regression method. The prediction model is validated and the error compensation is also done for the X axis of a three-axis comput
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