Analysis on Static Characteristics of Flipping Horizontal Machining Center

2014 ◽  
Vol 716-717 ◽  
pp. 577-581
Author(s):  
Rui Shao ◽  
Ding Wen Yu ◽  
Ping Fa Feng ◽  
Hui Shu Jia
Keyword(s):  
Static Analysis ◽  
Ball Screw ◽  
Electronic Document ◽  
Static Characteristics ◽  
Machining Performance ◽  
Machining Center ◽  
Interface Modeling

The worktable and the mainframe of the flipping horizontal machining center can be separated. The performance of the mainframe largely determines the machining performance of the whole machine. The deformation of mainframe under the application of certain forces demonstrates its static characteristics, which helps to find the vulnerable points for improvements. This paper mainly discusses the modeling of ball screw interfaces by taking into account the interface modeling. Static analysis is made by using Workbench to provide guidance for structural improvements.This electronic document is a “live” template and already defines the components of your paper [title, text, heads, etc.] in its style sheet.

The Static Analysis of the Parallel Bars of the Crankshaft of a Mini Air Compressor on ANSYS

2013 ◽  
Vol 397-400 ◽  
pp. 344-354
Author(s):  
Yao Bing Wei ◽  
Zhen Zhen Qu
Keyword(s):  
Static Analysis ◽  
Mechanical Model ◽  
Working Condition ◽  
Stress And Strain ◽  
Reciprocating Compressor ◽  
Static Characteristics ◽  
Connecting Rod ◽  
Air Compressor

Mechanical model of crankshaft and connecting rod mechanism of reciprocating compressor was built. Then the order of stress was obtained every ten degrees while crankshaft turning. The larger stress of crankshaft initial turnings was utilized to calculate the whole model and the unreliable region and destructive working condition then was determined. The situation was simulated with ANALYS and the static characteristics, i.e. stress and strain, of the crankshaft was also obtained. The simulated results testify the analysis and the results of the paper have great value for reference when designing crankshafts.

scholarly journals Static Analysis of the Tubular Electromagnetic Linear Actuator with Permanents Magnets

2018 ◽  
Vol 213 (2) ◽  
pp. 83-95 ◽  
Author(s):  
Krzysztof Just ◽  
Paweł Piskur
Keyword(s):  
Finite Element Method ◽  
Static Analysis ◽  
Preliminary Analysis ◽  
Magnetic Circuit ◽  
Electromagnetic Actuator ◽  
Linear Actuator ◽  
Static Characteristics ◽  
Soft Ferromagnetic ◽  
Ferro Magnetic ◽  
Electromagnetic Linear Actuator

Abstract In this paper a results of a static analysis of the tubular linear electromagnetic actuator is presented. The linear actuator consist of two parts: a cylindrical unmovable coils surrounded by a soft ferromagnetic case, and a runner made from sequence of permanent magnet with a soft ferro-magnetic gasket. In the first part of the paper the analytical method was performed for preliminary analysis. In the second part of the paper the more detailed analysis was depicted with using finite element method (FEM). The magnetic circuit shape and impact of selected dimensions on static characteristics is presented. Then the axial and radial electromagnetic force as a function of the runner dimensions were analysed.

Design of the Ball Screw Mechanism for Optimal Efficiency

1989 ◽  
Author(s):  
M.-C. Lin ◽  
S. A. Velinsky ◽  
B. Ravani
Keyword(s):  
Closed Form ◽  
Static Analysis ◽  
Load Capacity ◽  
Equations Of Motion ◽  
Closed Form Solution ◽  
Form Solution ◽  
Ball Screw ◽  
Exact Theory ◽  
Screw Mechanism ◽  
Extensive Computation

Abstract This paper develops theories for evaluating the efficiency of the ball screw mechanism and additionally, for designing this mechanism. Initially, a quasi-static analysis, which is similar to that of the early work in this area, is employed to evaluate efficiency. Dynamic forces, which are neglected by the quasi-static analysis, will have an effect on efficiency. Thus, an exact theory based on the simultaneous solution of both the Newton-Euler equations of motion and the relevant kinematic equations is employed to determine mechanism efficiency, as well as the steady-state motion of all components within the ball screw. However, the development of design methods based on this exact theory is difficult due to the extensive computation necessary and thus, an approximate closed-form representation, that still accounts for the ball screw dynamics, is derived. The validity of this closed-form solution is proven and it is then used in developing an optimum design methodology for the ball screw mechanism based on efficiency. Additionally, the self-braking condition is examined, as are load capacity considerations.

Statics Analysis on Beam Structures of Large Five-Axis Machining Center Based on ANSYS

2011 ◽  
Vol 80-81 ◽  
pp. 927-931 ◽  
Author(s):  
Yan Qing Wang ◽  
Gao Yan Zhong ◽  
Yong Biao Chang ◽  
Guo Xin Liu
Keyword(s):  
Static Characteristics ◽  
Beam Structure ◽  
Element Analysis ◽  
Beam Structures ◽  
High Rigidity ◽  
Machining Center ◽  
The Finite Element Analysis ◽  
Design Requirements ◽  
And Performance ◽  
Five Axis

The stroke and the material characteristics of the large five-axis machining center were expounded; a structure similar to the truss of the reinforced beam plates was designed according to the design requirements of the beam structure, this structure could make the frame gain high rigidity in small size, the frame made by the rods could be constituted with high rigidity, the overall rigidity of the machining center could be improved 23% - 25%; three different beam structures were designed, and the finite element analysis software ANSYS was carried out to analyze their static characteristics, the maximum deformations in three directions X, Y, Z were obtained; compared with other structures through the comparisons on mass, stiffness and performance, the optimal structure was obtained, its mass was 1818Kg, and its maximum deformations in X, Y, Z directions were 0.45mm, 0.07mm and 0.13mm, respectively.

scholarly journals Static and Dynamic Analysis of a Pump Impeller with a Balancing Device Part I: Static Analysis

2014 ◽  
Vol 19 (3) ◽  
pp. 609-619
Author(s):  
C. Kundera ◽  
V.A. Martsinkovsky
Keyword(s):  
Dynamic Analysis ◽  
Static Analysis ◽  
Performance Parameters ◽  
Static Characteristics ◽  
Pump Impeller ◽  
Static And Dynamic Analysis ◽  
Numerical Example ◽  
Basic Performance ◽  
Simplifying Assumptions ◽  
Impeller Geometry

Abstract This part of the work presents the design and static analysis of an impeller for a single-stage pump. The impeller is directly connected with a balancing device. The impeller needs to have a properly designed system of longitudinal and lateral clearances on both sides. With the simplifying assumptions concerning the flow and distribution of pressure in the longitudinal and lateral clearances, the static analysis involved deriving relationships between the impeller geometry and the basic performance parameters of the pump. A numerical example was used to show the calculation procedure of static characteristics for the predetermined parameters

FEA and Contrast Test of Slender Shaft Turning

2014 ◽  
Vol 889-890 ◽  
pp. 140-143
Author(s):  
Tie Ling Wang ◽  
Zhao Xia Xi
Keyword(s):  
Finite Element ◽  
Modal Analysis ◽  
Natural Frequency ◽  
Static Analysis ◽  
Cutting Forces ◽  
Cutting Parameters ◽  
Technological Scheme ◽  
Static Characteristics ◽  
Turning Process ◽  
Shaft Deformation

Aanalyzed the finite element static characteristics of the slender shaft deformation under the influence of cutting forces with different clamping ways in turning process by Pro/ENGINEER and Pro/MECHANICA software . Also analyzed the influence of clamping ways on the natural frequency of the slender shaft modal characteristics. The result indicates that the static analysis can be applied to the prediction of processing deformation with different clamping ways, the modal analysis can be applied to the calculation of the slender shaft natural frequency with different clamping ways. Can get a basic for reducing machining deformation and vibration, selecting cutting parameters, drawing up technological scheme reasonably.

Investigation of the Influence of Structural and Adjusting Parameters of a Quadruple-Orifices Electrohydraulic Amplifier on the Static Characteristics of Rocket Pack Steering Actuator

2019 ◽  
pp. 32-40
Author(s):  
O.B. Belonogov
Keyword(s):  
Static Analysis ◽  
Dimensionless Parameter ◽  
Slope Angle ◽  
Static Stability ◽  
Gain Factor ◽  
Gear Pump ◽  
Static Characteristics ◽  
Rectangular Shape ◽  
Output Characteristics ◽  
Speed Characteristic

The article considered the results of researches of influence of constructional and adjusting parameters of the quadruple-orifices electrohydraulic amplifier on static characteristics of the steering actuator of the rocket pack. The studies are carried out using static analysis methods, including methods for calculating the static characteristics of an autonomous single-stage steering actuator with a quadruple-orifices electrohydraulic amplifier with negative overlapping of throttling windows of rectangular shape by spool plungers. As a result of research it is shown that the steering actuator does not have static stability. It is shown that the slope of the speed characteristic of the steering actuator is exerted by the dimensionless parameter of the local thickness of the incoming liner wall (the driven axis of the three-gear pump). Consequently, with the help of the variation of this parameter, it is possible to adjust the slope angle of the speed characteristic of the steering actuator, i.e., its gain factor. The design solutions of the steering actuator are proposed, which allow improving their output characteristics and facilitating adjustment.

Research on Thermal Error Compensation Technique of the Screw

2012 ◽  
Vol 482-484 ◽  
pp. 309-313
Author(s):  
Hong Xin Yue ◽  
Yan Shi ◽  
Yan Mei Xi
Keyword(s):  
Thermal Deformation ◽  
Thermal Error ◽  
Ball Screw ◽  
Cooling Fluid ◽  
Rbf Network ◽  
Machining Center ◽  
Surrounding Environment ◽  
Compensation Technique ◽  
Thermal Error Model ◽  
Thermal Error Compensation

In the system of the machine tool, the position error is directly affected by the thermal deformation of ball screw. Screw system is a complex thermal system, which is affected by the processing conditions, the processing cycle, the use of cooling fluid, and the surrounding environment. Due to non-linear and interaction of the thermal error, a RBF network thermal error model is proposed in the paper and the model is tested in XHFA2420 large machining center.

scholarly journals Design and Research of Automatic Tool Changer System for Multistation Spring Forming Machine

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Wei Li ◽  
Decheng Wang ◽  
Peng Cheng
Keyword(s):  
Machine Tool ◽  
Static Analysis ◽  
Kinematic Analysis ◽  
Machining Center ◽  
Automatic Tool Change ◽  
Automatic Tool Changer ◽  
Automatic Tool ◽  
Tool Position ◽  
Change System

Currently, the spring machine tool is fixed by means of manual clamping and positioning by bolts. The automation of the tool change is low, and the accurate value of the tool position cannot be determined. The automatic tool change system for spring machine was designed by using the standard functional parts of the automatic tool change system of the machining center. It mainly includes the design of the automatic loose clamp device and that of the multispindle automatic tool change arm. After static analysis, the deformation of the automatic tool change arm is 0.153 mm, which satisfies the requirements for usage. Kinematic analysis of the designed automatic tool change arm was carried out. After actual verification, the designed automatic tool change system of spring machine realizes the functions of the tools automatic replacement and positioning of the spring machine, which improves the automation of the spring forming equipment.

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