Static and Dynamic Performance of High-Speed Vertical Machining Center Spindle Box

2012 ◽  
Vol 192 ◽  
pp. 185-189
Author(s):  
Rong Chang Li ◽  
Ai Xia He
Keyword(s):  
High Speed ◽  
Optimization Design ◽  
Dynamic Performance ◽  
Complex Structure ◽  
Temperature Deformation ◽  
Factors Affecting ◽  
Machining Center ◽  
Box Structure ◽  
Static Performance ◽  
Strength And Stiffness

In order to improve the static performance of high speed machining center spindle box, using ANSYS software static performance analysis, static analysis of finite element method to the complex structure of the spindle box, draw a box structure under the force load and temperature load stiffness theoretical values, emphasizing the factors affecting temperature deformation, provides a basis to improve and control the strength and stiffness of the spindle box, as well as box optimization design of the design constraints.

Optimization Design Based on Static and Dynamic Performance of Beam

2011 ◽  
Vol 188 ◽  
pp. 743-749
Author(s):  
M. Cong ◽  
Q. Zhao ◽  
T. Han ◽  
D.D. Liu ◽  
Z.B. Duan ◽  
...  
Keyword(s):  
High Speed ◽  
Optimization Design ◽  
Dynamic Performance ◽  
Optimization Method ◽  
Improve Performance ◽  
Sizing Optimization ◽  
Machining Center ◽  
Before And After ◽  
Dynamic Performances ◽  
New Type

A new type of high speed vertical machining center which adopt gantry type structure is introduced. In order to improve performance of Beam, a sizing optimization based on static and dynamic performance is carried out. And a comparison is made between the analysis results before and after optimization. It is proved that the optimization method is feasible and both static and dynamic performances are improved.

Finite Element Analysis and Structure Optimization of Machine Tool Worktable

2011 ◽  
Vol 80-81 ◽  
pp. 985-989 ◽  
Author(s):  
Dong Qiang Gao ◽  
Fei Zhang ◽  
Zhi Yun Mao ◽  
Huan Lin ◽  
Jiang Miao Yi
Keyword(s):  
High Speed ◽  
Dynamic Performance ◽  
Original Structure ◽  
High Speed Machining ◽  
Element Analysis ◽  
Performance Requirements ◽  
Machining Center ◽  
Static Performance ◽  
Overall Performance ◽  
Ansys Workbench

DVG850 high-speed machining center worktable is taken as research object, in order to meet the overall performance requirements of the high-speed machining center, 3D model of worktable is established in SolidWorks. Static analysis and modal analysis are carried out in ANSYS Workbench, and then the worktable is optimized in topology optimization module of ANSYS Workbench. According with the analysis results, the worktable structure has improved. The improved worktable keeps the original’s static performance, and enhances the dynamic performance; however, its quality is lighter than original structure by 23.2 kg.

scholarly journals A Novel Stick-Slip Nanopositioning Stage Integrated with a Flexure Hinge-Based Friction Force Adjusting Structure

Micromachines ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 765
Author(s):  
Junhui Zhu ◽  
Peng Pan ◽  
Yong Wang ◽  
Sen Gu ◽  
Rongan Zhai ◽  
...  
Keyword(s):  
Friction Force ◽  
High Speed ◽  
Simulation Analysis ◽  
Load Capacity ◽  
Dynamic Performance ◽  
Critical Role ◽  
Vertical Direction ◽  
Flexure Hinge ◽  
Stick Slip ◽  
Static Performance

The piezoelectrically-actuated stick-slip nanopositioning stage (PASSNS) has been applied extensively, and many designs of PASSNSs have been developed. The friction force between the stick-slip surfaces plays a critical role in successful movement of the stage, which influences the load capacity, dynamic performance, and positioning accuracy of the PASSNS. Toward solving the influence problems of friction force, this paper presents a novel stick-slip nanopositioning stage where the flexure hinge-based friction force adjusting unit was employed. Numerical analysis was conducted to estimate the static performance of the stage, a dynamic model was established, and simulation analysis was performed to study the dynamic performance of the stage. Further, a prototype was manufactured and a series of experiments were carried out to test the performance of the stage. The results show that the maximum forward and backward movement speeds of the stage are 1 and 0.7 mm/s, respectively, and the minimum forward and backward step displacements are approximately 11 and 12 nm, respectively. Compared to the step displacement under no working load, the forward and backward step displacements only increase by 6% and 8% with a working load of 20 g, respectively. And the load capacity of the PASSNS in the vertical direction is about 72 g. The experimental results confirm the feasibility of the proposed stage, and high accuracy, high speed, and good robustness to varying loads were achieved. These results demonstrate the great potential of the developed stage in many nanopositioning applications.

Optimization Design of DVG850 Worktable System Based on ANSYS Workbench

2012 ◽  
Vol 184-185 ◽  
pp. 356-359
Author(s):  
Jiang Miao Yi ◽  
Dong Qiang Gao ◽  
Fei Zhang ◽  
Huan Lin
Keyword(s):  
Modal Analysis ◽  
Natural Frequency ◽  
High Speed ◽  
Optimization Design ◽  
Element Model ◽  
Single Screw ◽  
Machining Center ◽  
The Finite Element Model ◽  
Better Than ◽  
Ansys Workbench

The finite element model of worktable system is created and modal analysis is made with ANSYS Workbench by taking DVG850 high-speed vertical machining center worktable system for example. We make modal analysis of single-screw strength general reinforcement worktable system and get the natural frequency and the vibration mode.Then in order to improve the system's natural frequency, the scheme of dual-screw worktable system is put forward. Also natural frequency and vibration mode is got. Finally, it is proved that the performance of dual-screw worktable system is significantly better than the single-screw one. This provides a reliable reference for further study on dynamic analysis of worktable system.

Optimization Design on Headstock of Shape High-Speed Vertical Machining Center

2011 ◽  
Vol 121-126 ◽  
pp. 1023-1027
Author(s):  
Chun Zhang ◽  
Zhi Yuan Li
Keyword(s):  
Optimal Design ◽  
Response Surface ◽  
High Speed ◽  
Optimization Design ◽  
Parametric Model ◽  
Machining Center ◽  
Design Variables ◽  
Test Technology ◽  
Design Result ◽  
Ansys Workbench

Optimization design was a technology that searched and determined the optimal design. Parametric model of headstock was established in Pro/E, and the parametric model was imported into the ANSYS Workbench. Then multi-objective optimization design was carried out in DesignXplorer module based on test technology, response surface that the combinations of design variables aimed at the objective function was obtained, the situation which design variables changes impacted on performance parameters from the response surface was viewed, a relatively ideal optimal design result was chosen. The mass of improved headstock was reduced, under the condition that performance in all aspects was not diminished.

Structural Dynamic Analysis and Optimization of High-Speed Precision Machining Center Column

2013 ◽  
Vol 655-657 ◽  
pp. 48-51
Author(s):  
Fu Qiang Wang ◽  
Zhi Yuan Rui ◽  
Dong Ping Zhao ◽  
Chun Li Lei
Keyword(s):  
Dynamic Analysis ◽  
High Speed ◽  
Dynamic Performance ◽  
Optimization Theory ◽  
Structure Optimization ◽  
Precision Machining ◽  
Variation Analysis ◽  
Optimization Scheme ◽  
Structural Dynamic ◽  
Machining Center

The theory of structural dynamic analysis is put forward firstly. Then the dynamic performance of HMC80 high-speed precision machining center column is analyzed by means of finite element method. The dynamic performance of the column is analyzed using structural dynamic optimization theory and variation analysis with the thickness of wall plate and the inner rib plates as the parameters thirdly. Based on the analysis results, the structure optimization scheme of the column is obtained. The structure optimization scheme is analyzed and the analysis results show that the dynamic performance of the column optimization scheme is improved obviously.

Study on Balance Simulation of Milling Tool Handle in High Speed Machining

2013 ◽  
Vol 397-400 ◽  
pp. 384-387
Author(s):  
Yun Na Xue ◽  
Li Xue ◽  
Guo Sheng Su
Keyword(s):  
High Speed ◽  
Optimization Design ◽  
Rotation Axis ◽  
Dynamic Performance ◽  
Center Of Mass ◽  
Balance Model ◽  
Static Balance ◽  
Balance Performance ◽  
Dimensional Parameters ◽  
Balance Structure

The balance performance of the tool handle influences the machining quality. Using the tool of the sensitivity analysis, the feasibility analysis and the optimization design in Pro/e software, by reasonably selecting the dimensional parameters of the balance structure, the distance between the center of mass and the rotation axis can be zero in order to achieve the static balance. After the dynamic simulation, the dynamic performance states that the static balance model is not fully dynamic balanced.

scholarly journals Research and Optimization Design of Mixing Characteristics of High-speed Centrifugal Mixer Based on DEM

2021 ◽  
Vol 2095 (1) ◽  
pp. 012071
Author(s):  
Hongjun Li ◽  
Xiao Zhou ◽  
Xu Li ◽  
Wei Chen ◽  
Ying Zuo
Keyword(s):  
Experimental Analysis ◽  
Building Material ◽  
Evaluation System ◽  
High Speed ◽  
Optimization Design ◽  
Raw Materials ◽  
Mixing Process ◽  
Factors Affecting ◽  
Centrifugal Mixer ◽  
Mixing Characteristics

Abstract Aiming at the special production process of an environmental protection building material, a new mixing equipment, high-speed centrifugal mixer, was designed. In this paper, the mixing characteristics of high-speed centrifugal mixer were studied by using discrete element method (DEM). By constructing the contact model and establishing the evaluation system, the mixing process was simulated and analyzed by EDEM software, and the mixing situation of the two raw materials in the centrifugal mixer was obtained. At the same time, according to the two important factors affecting the mixing results, the comparative experimental analysis was carried out under different conditions, and finally the optimization suggestions for the equipment were put forward.

Optimization Design for the Large Gantry Machining Center Crossbeam

2011 ◽  
Vol 130-134 ◽  
pp. 2284-2287
Author(s):  
Qing Huang ◽  
Wei Fang Chen ◽  
Wen Hua Ye ◽  
Pei Huang Lou ◽  
Shi Hao Liu
Keyword(s):  
Optimization Design ◽  
Evaluation Method ◽  
Natural Frequencies ◽  
Machining Accuracy ◽  
Objective Functions ◽  
Optimization Analysis ◽  
Machining Center ◽  
Optimization Parameters ◽  
Static Performance ◽  
Performance Evaluation Method

The crossbeam is an important part in the gantry machining center which greatly affects the machining accuracy. Four kinds of crossbeam structure for the large machining center were designed and their static and dynamic characteristics were analyzed. The optimal crossbeam structure was selected by the comprehensive performance evaluation method. Then the thicknesses of rib plates in the crossbeam were defined as the optimization parameters after conducting the sensitivity analysis. The first four natural frequencies were defined as the objective functions and the static performance and the mass were defined as the constraint conditions. The optimal sizes of the rib plates in the crossbeam were obtained by the optimization analysis. Finally the feasibility of the result was demonstrated by the simulation. The result indicated that with the mass increased only by 0.18%, the first four natural frequencies of the optimal crossbeam were increased by 19.56%, 19.45%, 19.84%, 17.05%.

scholarly journals Analysis on influence of static calibration on the axle-group weigh-in-motion system accuracy

ACTA IMEKO ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 69
Author(s):  
Zhengchuang Lai ◽  
Xiaoxiang Yang ◽  
Jinhui Yao
Keyword(s):  
Dynamic Performance ◽  
Head Tilt ◽  
Factors Affecting ◽  
Static Calibration ◽  
Motion System ◽  
Weigh In Motion ◽  
Gravity Line ◽  
Static Performance ◽  
Dynamic Weighing ◽  
Test Process

The axle-group weigh-in-motion system has two functions: static weighing and dynamic weighing. According to the weighing model, the accuracy of dynamic weighing is affected by the static performance. This paper analyses the size of various factors affecting the static performance, such as sensor tilt installation, platform deformation, platform tilt installation, and these errors will lead to sensor swing, bearing head tilt, gravity line of action and sensor axis direction is not consistent, thus affecting the static weighing accuracy. However static calibration is the best way to reduce or even eliminate the above errors. The dynamic truck scale of different manufacturers with or without static calibration is used in the test process. The results show that the dynamic performance index can meet the requirements only after the static calibration is used.

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