Dynamics analysis of a slender ball-screw feed system considering the changes of the worktable position

Zhang, Huijie; Liu, Hui; Du, Chao; Lv, Dun; Zhang, Jun; Zhao, Wanhua

doi:10.1177/0954406218799781

Cited by 19 publications

(11 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Liu et al [12] introduced a new dynamic sub-structuring condition multi-subsystem connected via a wedge mechanism and analyzed the position-dependent dynamics of an example ball screw drive. Zhang et al [13] discussed the position-dependent dynamics of a slender ball screw feed system using the hybrid element method, and studied the influences of the screw tension force, pitch, and nominal diameter, and the length and rated dynamic load of the screw-nut joint on the natural frequency of a slender ball-screw feed system along its entire stroke. Siva et al [14] studied the variation of the dynamics in mechatronic systems with different operation positions and pointed out that the varying dynamic behavior affects the stability of the control system and the machine performance.…”

Section: Introductionmentioning

confidence: 99%

Acceleration-Dependent Analysis of Vertical Ball Screw Feed System without Counterweight

Zou

Zhang

et al. 2021

Chin. J. Mech. Eng.

Self Cite

View full text Add to dashboard Cite

The distinguishing feature of a vertical ball screw feed system without counterweight is that the spindle system weight directly acts on the kinematic joints. Research into the dynamic characteristics under acceleration and deceleration is an important step in improving the structural performance of vertical milling machines. The magnitude and direction of the inertial force change significantly when the spindle system accelerates and decelerates. Therefore, the kinematic joint contact stiffness changes under the action of the inertial force and the spindle system weight. Thus, the system transmission stiffness also varies and affects the dynamics. In this study, a variable-coefficient lumped parameter dynamic model that considers the changes in the spindle system weight and the magnitude and direction of the inertial force is established for a ball screw feed system without counterweight. In addition, a calculation method for the system stiffness is provided. Experiments on a vertical ball screw feed system under acceleration and deceleration with different accelerations are also performed to verify the proposed dynamic model. Finally, the influence of the spindle system position, the rated dynamic load of the screw-nut joint, and the screw tension force on the natural frequency of the vertical ball screw feed system under acceleration and deceleration are studied. The results show that the vertical ball screw feed system has obviously different variable dynamics under acceleration and deceleration. The influence of the rated dynamic load and the spindle system position on the natural frequency under acceleration and deceleration is much greater than that of the screw tension force.

show abstract

Section: Introductionmentioning

confidence: 99%

Acceleration-Dependent Analysis of Vertical Ball Screw Feed System without Counterweight

Zou

Zhang

et al. 2021

Chin. J. Mech. Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Considering the nonlinear stiffness of rolling guide joints owing to the point contact between ball and raceway, Wang et al [24] developed a dynamic model of three-axis coupling machine tool to evaluate the axis coupling effect as well as position-dependent response of tool center point. On the basis of nonlinear contact characteristics of screw-nut and bearing joints, for vertical structure BSFS without counterweight [25], the slender BSFS [26] and BSFS with lead screw pre-stretching [27], the position-dependent transmission stiffness models of system were established respectively. Nevertheless, the above mentioned literatures pay little attention to nonlinear vibration behavior of BSFS which is necessary to evaluate the operational behavior of CNC machine tools under periodic cutting force treatment.…”

Section: Introductionmentioning

confidence: 99%

A comprehensive nonlinear dynamic model for ball screw feed system with rolling joint characteristics

Zhang

et al. 2021

Nonlinear Dyn

View full text Add to dashboard Cite

Modern tendency of machine tools design requires more accurate model to predict the system dynamics, in order to anticipate its interaction with machining process. In this paper, a comprehensive dynamic model of ball screw feed system (BSFS) considering nonlinear kinematic joints is introduced to investigate the varying dynamic characteristics when worktable is subjected to combined load from six directions. The load-deformation relationship of each kinematic joint is dealt with a set of translational and angular spring elements. The nonlinear restoring force function of each joint involving coupling displacement is calculated. Based on the lumped mass method, the analytical 18-DOF dynamic equation is formulated by the analysis of force dependence between joints. Model verification tests are conducted. The worktable response exhibits the abundant and fascinating nonlinear phenomena arising in nonlinear joint and coupling effect. The nonlinear behavior behaves significant difference owing to the variations of excitation, platform position, screw length, preload and damping of joints. Thus, the model is promising for comprehension of machine dynamic behavior and for development of sophisticated control strategy.

show abstract

“…He et al (2020) proposed a stiffness matching design method for the ball screw feed drive system. Zhang et al (2019aZhang et al ( , 2019b established the dynamic model of the feed system of slender ball screw and proposed a method to calculate the mass matrix and system stiffness. Wang et al (2020) proposed differential feed system that can suppress the effect of motor torque harmonics on speed fluctuation of the table and improve speed smoothness at low-speed operation.…”

Section: Introductionmentioning

confidence: 99%

Dynamic analysis of ball screw feed system with abrupt-change-nonlinear drive stiffness

Gao

2021

ILT

View full text Add to dashboard Cite

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 diagram and Phase-plane portrait diagram. The feed system was analyzed theoretically and experimentally, the experimental results are in good agreement with the model results. Findings Lead screw lead angle, preload, load and start acceleration affected ball-screw pair, bearing and transmission stiffness. And the load, nut contact stiffness, bearing contact stiffness, preload have a large effect on the transmission stiffness. The results show that a certain acceleration value will make the axial stiffness abrupt change. Originality/value This research provides a useful theoretical support for ensuring a good dynamic for the ball screw feed system.

show abstract

Dynamics analysis of a slender ball-screw feed system considering the changes of the worktable position

Cited by 19 publications

References 20 publications

Acceleration-Dependent Analysis of Vertical Ball Screw Feed System without Counterweight

Acceleration-Dependent Analysis of Vertical Ball Screw Feed System without Counterweight

A comprehensive nonlinear dynamic model for ball screw feed system with rolling joint characteristics

Dynamic analysis of ball screw feed system with abrupt-change-nonlinear drive stiffness

Contact Info

Product

Resources

About