scholarly journals Development of a Servo-Based Broaching Machine Using Virtual Prototyping Technology

2017 ◽  
Vol 63 (7-8) ◽  
pp. 466
Author(s):  
Seok Hong Park ◽  
Duc Viet Dang ◽  
Trung Thanh Nguyen
Keyword(s):  
Sliding Mode ◽  
Virtual Prototyping ◽  
Cost Savings ◽  
Ball Screw ◽  
Design Stage ◽  
Mechanical Structure ◽  
Tool Performance ◽  
Proposed Model ◽  
Virtual Prototyping Technology ◽  
Multi Body

Predicting machine tool performance at the design stage is one way to resolve the time issue and achieve cost savings. The objective of this paper was to develop a new non-hydraulic broaching machine using a servo motor, ball screw, and roll element linear guide using virtual prototyping technology. First, we developed a multi-body simulation model (MBS) of a servo-based broaching machine to investigate its dynamic behaviour. Then, an adaptive sliding mode proportional-integral-derivative (PID)-based controller (ASMPID) was proposed to conduct the broaching process. We then performed a co-simulation between the mechanical structure and virtual controller to investigate the ram body trajectory and identify the optimal control parameters. Finally, we manufactured a prototype machine to evaluate the simulation results and determine the benefits of the new system. Our results indicated that the proposed model, which includes a mechanical structure and intelligent controller, effectively improved broaching machine design. Therefore, this work is expected to improve the prototyping efficiency of new broaching machines.

Simulation and Analysis of Frame Structure of Military Transport Truck

2011 ◽  
Vol 291-294 ◽  
pp. 2237-2240
Author(s):  
Guo Nian Yao ◽  
Hai Ying Huang ◽  
Li Juan Wang
Keyword(s):  
Virtual Prototyping ◽  
Frame Structure ◽  
Vibration Modes ◽  
Three Dimension ◽  
Force And Motion ◽  
Body Dynamics ◽  
Virtual Prototyping Technology ◽  
Multi Body ◽  
High Credibility ◽  
Processor Module

In order to design the vibrator with the similar structure to military transport truck, which will be used in simulating transport environment and evaluating the transportation properties of the tested product, three-dimension model of overall structure of truck frame, crossbeams and floor is established with ADAMS/View based on multi-body dynamics theory and virtual prototyping technology. Post-processing of the simulation and analysis results is executed with ADAMS/Post Processor module with a military truck model in the study. According to the bump of vehicle during transport and the chassis vibration, the constraints, force and motion accord with the actual transport are put on the model. Vibration modes of all orders and the spectrum are gained and analyzed in detail. The results indicate that the simulation is consistent with the actual transport, which shows the simulation of the overall frame structure owns high credibility.

PKM ANALYSIS AND DESIGN IN A VIRTUAL PROTOTYPING ENVIRONMENT

2002 ◽  
Vol 01 (02) ◽  
pp. 211-226
Author(s):  
GIACOMO BIANCHI ◽  
IRENE FASSI ◽  
LORENZO MOLINARI TOSATTI
Keyword(s):  
Virtual Prototyping ◽  
Analysis And Design ◽  
Mechanical Structure ◽  
Reachable Workspace ◽  
Industrial Adoption ◽  
Multi Body ◽  
Short Time

Industrial adoption of PKMs may be eased by the availability of methodologies and integrated tools able to analyze in a short time PKMs of any architecture, providing the key data needed to design the machine. The proposed Virtual Prototyping Environment for PKM Analysis answers to these requirements, quickly estimating not only the reachable workspace, the Jacobian conditioning, but also the actuators' effort, internal loads in the mechanical structure and the effects of lumped structural compliances. A description of the developed VPE-PKM, based on a commercial Multi-body package, is given. Its effectiveness is shown, presenting results obtained by ITIA-CNR during the design of a 3 dof translational PKM for light deburring operations.

Research on Crosswind Stability of FSAE Racing Car with Rear Wing at Different Attack Angles

2012 ◽  
Vol 152-154 ◽  
pp. 737-742 ◽  
Author(s):  
Jun Ni ◽  
Si Zhong Chen ◽  
Da Feng ◽  
Xu Jie Wang ◽  
Jia Xin Hao
Keyword(s):  
Virtual Prototyping ◽  
Aerodynamic Characteristics ◽  
Attack Angle ◽  
Feasible Method ◽  
Body Model ◽  
Rear Wing ◽  
Air Resistance ◽  
Crosswind Stability ◽  
Virtual Prototyping Technology ◽  
Multi Body

In order to analyze the performance of a certain FSAE racing car with rear wing at different attack angles by virtual prototyping technology. The multi-body model of a FSAE racing car which takes non-linear factors into consideration was built by applying ADAMS/Car. The correctness of the model is verified by comparison with the actual experiment result. By the simulation of the air resistance and lift characteristics of the rear wing, a feasible method to building the aerodynamic characteristics of the rear wing in multi-body model was proposed. Based on these, the crosswind stability of FSAE racing car with rear wing at different attack angles was analyzed, the result shows that the effect of crosswind is reduced with the increase of the attack angle of the rear wing.

Integrated Multi-Body Dynamic and Cam-Tappet Contact Analysis for a Single Cylinder IC Engine

2005 ◽  
Author(s):  
M. Teodorescu ◽  
M. Kushwaha ◽  
H. Rahnejat ◽  
S. Rothberg
Keyword(s):  
Integrated Approach ◽  
Valve Train ◽  
Design Stage ◽  
Ic Engine ◽  
Single Cylinder ◽  
Single Cylinder Engine ◽  
Proposed Model ◽  
Multi Body ◽  
Train System ◽  
Body Dynamic

The paper investigates the valve train system of a 4-stroke single cylinder engine. An integrated approach for the dynamics and tribological behavior of the mechanism, as well as cam-tappet contact characteristics is described. The proposed model predicts the cam-tappet contact sub-surface stress field as well as contact deflection. Experimental validation is provided for the dynamic model with a motored test rig, using Laser Doppler vibrometry (LDV). The model can be used in the design stage or for design evaluation.

Robot Kinematics and Dynamics Analysis Based on Virtual Prototyping Technology

2012 ◽  
Vol 503-504 ◽  
pp. 752-755
Author(s):  
Zhi Ming Wang ◽  
Xuan Zhou
Keyword(s):  
New Technology ◽  
Rapid Development ◽  
Virtual Prototyping ◽  
Robot Kinematics ◽  
Kinematics And Dynamics ◽  
Dynamics Analysis ◽  
Robot Arm ◽  
Analysis Method ◽  
Virtual Prototyping Technology ◽  
Multi Body

Virtual prototyping is a new technology with the rapid development of computer technology. This paper put forward a systematic kinematics and dynamics analysis method based on virtual prototyping technology to simulate multi-body dynamics of robot arm. After the design requirements were introduced, the conceptual design of robot arm was then proposed, and the kinematics and dynamics analysis method was present with the simulation results. The kinematics and dynamics analysis of a robot arm was given as an example, which demonstrates that this method is obviously helpful for product design

Sir Robert Stawell Ball and methodologies of modern screw theory

2002 ◽  
Vol 216 (1) ◽  
pp. 1-11 ◽  
Author(s):  
H Lipkin ◽  
J Duffy
Keyword(s):  
Computational Geometry ◽  
Rigid Body ◽  
Lie Algebra ◽  
Screw Theory ◽  
Mechanical Design ◽  
Ball Screw ◽  
Dual Numbers ◽  
Body Dynamics ◽  
Rigid Body Mechanics ◽  
Multi Body

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.

Prediction of Comprehensive Thermal Error of a Preloaded Ball Screw on a Gantry Milling Machine

2017 ◽  
Vol 140 (2) ◽  
Author(s):  
Kuo Liu ◽  
Haibo Liu ◽  
Te Li ◽  
Yongqing Wang ◽  
Mingjia Sun ◽  
...  
Keyword(s):  
Thermal Field ◽  
Thermal Characteristics ◽  
Thermal Error ◽  
Least Square Method ◽  
High Accuracy ◽  
Least Square ◽  
Ball Screw ◽  
Milling Machine ◽  
Thermal Fields ◽  
Proposed Model

The conception of the comprehensive thermal error of servo axes is given. Thermal characteristics of a preloaded ball screw on a gantry milling machine is investigated, and the error and temperature data are obtained. The comprehensive thermal error is divided into two parts: thermal expansion error ((TEE) in the stroke range) and thermal drift error ((TDE) of origin). The thermal mechanism and thermal error variation of preloaded ball screw are expounded. Based on the generation, conduction, and convection theory of heat, the thermal field models of screw caused by friction of screw-nut pairs and bearing blocks are derived. The prediction for TEE is presented based on thermal fields of multiheat sources. Besides, the factors influencing TDE are analyzed, and the model of TDE is established based on the least square method. The predicted thermal field of the screw is analyzed. The simulation and experimental results indicate that high accuracy stability can be obtained using the proposed model. Moreover, high accuracy stability can still be achieved even if the moving state of servo axis changes randomly, the screw is preloaded, and the thermal deformation process is complex. Strong robustness of the model is verified.

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