The Parametric Simulation Design Method of Conjugate Cams of Automatic Pin Insertion Machine Based on Creo Parametric Software

2012 ◽  
Vol 236-237 ◽  
pp. 1201-1204
Author(s):  
Qing Li Liu ◽  
Lei Shen ◽  
Albert Tsai ◽  
Su Fen Yao ◽  
Edmund Wang
Keyword(s):  
3D Modeling ◽  
Design Method ◽  
Dynamic Performance ◽  
Simulation Method ◽  
3D Models ◽  
Modeling Method ◽  
Simulation Design ◽  
Basic Principles ◽  
Cam Mechanism ◽  
Cam Profile

Cam mechanisms are widely used in automated machines. Conjugate cams have become popular for its eminent kinematics and dynamic performance in research and in industry. As a commonly used cam mechanism in industry, especially in automatic pin insertion machines, conjugate cams have the advantages of being highly efficient, highly accurate and relatively cheap. A parametric simulation method was used to create a conjugate cam profile. This paper describes the steps used to create 3D models of the conjugate cam and the basic principles used to simulate the motion of cam mechanisms. The motion simulations were done with the parametric 3D modeling method using Creo Parametric Software.

The Parametric Design Method of the Globoid Cam Based on the Software of ProEngineer

2012 ◽  
Vol 166-169 ◽  
pp. 784-787
Author(s):  
Qing Li Liu ◽  
Albert Tsai ◽  
Su Fen Yao ◽  
Edmund Wang
Keyword(s):  
3D Modeling ◽  
3D Model ◽  
Parametric Design ◽  
Design Method ◽  
Dynamic Performance ◽  
Modeling Method ◽  
Industrial Robots ◽  
Basic Principles ◽  
Cam Mechanism ◽  
Highly Efficient

Cam mechanisms are widely used in automated machines. Globoid cam has received widespread attention for its eminent kinematics and dynamic performance in research and application. As a commonly used cam mechanism in industry, especially in the field of industrial robots, Globoid Cam has the advantages of being highly efficient, highly accurate and relatively cheap. This study used ProEngineer to create a 3D model of the Globoid Cam mechanism. This paper describes the steps used to create a 3D model of the Globoid Cam, and the basic principles behind the parametric 3D modeling method.

Research on Reverse Design of the Cam Mechanism

2010 ◽  
Vol 43 ◽  
pp. 551-554
Author(s):  
Min Fei Liu ◽  
Zhi Liang Qian
Keyword(s):  
Dynamic Performance ◽  
Closed Curve ◽  
Second Derivative ◽  
Discrete Energy ◽  
B Spline ◽  
Cam Mechanism ◽  
Cam Profile ◽  
Polar Radius ◽  
Displacement Speed ◽  
Energy Law

In view of the reverse design of planar cam mechanism, the measurements of cam contour are smoothed by the discrete energy law in order to ensure the dynamic performance. The cam profile is fitted by three non-uniforms B-spline according to the features that cam contour is a closed curve and its measurements are distributed non-uniformly. Based on the above, the expressions of displacement, speed, and acceleration of the follower in form of polar radius of profile and its first and second derivative are derived. Finally, a reverse design example is given, the effectiveness of the method is verified.

Study on 3D CAD System of Extruder

2012 ◽  
Vol 466-467 ◽  
pp. 592-595
Author(s):  
Li Zhen Zhang ◽  
Chao Lv ◽  
Jun Tao Li
Keyword(s):  
3D Modeling ◽  
Computer Aided Design ◽  
Parametric Design ◽  
Design Method ◽  
3D Models ◽  
Design System ◽  
Technological Parameters ◽  
3D Cad ◽  
Cad System ◽  
Further Development

The extruder is the key device to produce extrusion feed and food. Since different raw materialsi require different structural and technological parameters, the parametric design method must be used when an extruder is designed. The 3D (3-dimensional) software now available is just universal design platform, so the further development must be done based on universal software to realize the automatic design of machines for special purpose. In this paper the further development is carried out and the CAD (Computer Aided Design) system for the 3D parametric design of extruder is developed based on Solidworks. The system is developed with Visual C++, and it can be compatibly added in Solidworks as dynamic linkage library, which makes the modification of extruder more rapid and more correct. The paper introduces every function part in detail, including parameter input , design and calculation, 3D modeling of part, 3D modeling of assembly, engineering drawing. The realization of the automatic 3D modeling adopts the new idea of driven by dimension primarily and driven by program secondarily. The whole system is encapsulated in a menu of Solidworks. After some parameters, such as power and rotational speed, are imported through UI (User Interface), the system will automatically complete the design of extruder. Then 3D models and engineering drawings of parts or assembly can be exported according to the choice of user.

scholarly journals 3D modeling design and rapid style recommendation of polo shirt based on interactive genetic algorithm

2020 ◽  
Vol 15 ◽  
pp. 155892502096666
Author(s):  
Zhang Zhuo ◽  
Cong Honglian
Keyword(s):  
Genetic Algorithm ◽  
3D Modeling ◽  
Design Method ◽  
3D Models ◽  
Initial Population ◽  
3D Design ◽  
Interactive Genetic Algorithm ◽  
Component Library ◽  
Suitability Evaluation ◽  
Clothing Design

This paper proposes a design method for personalized 3D modeling and a rapid style recommendation of polo shirts based on interactive genetic algorithms. Through the research on the parametric multi-style design method of polo shirts, this paper proposes 3D design methods such as the conversion of 3D models, component splicing, and stripes matching mapping rules. In addition, we establish a coded component library of style parts and striped designs to realize the component modeling of tailor-made styles for polo shirts. Besides, the Interactive Genetic Algorithm (IGA) is introduced in the article. Through the algorithm coding, initial population generation, selection, using the scoring mechanism to obtain the user’s suitability evaluation of the program, crossover, and mutation, etc., gradually generating a user-satisfied polo shirt style model design plan, a personalized rapid style recommendation of the user-oriented polo shirt is established. This system can present tailored polo shirt style for customers, and WYSIWYG, to find the most favorite clothing styles for customers and lower the threshold of clothing design expertise.

scholarly journals A Quaternion-Based Piecewise 3D Modeling Method for Indoor Path Networks

2019 ◽  
Vol 8 (2) ◽  
pp. 89
Author(s):  
Hongdeng Jian ◽  
Xiangtao Fan ◽  
Jian Liu ◽  
Qingwen Jin ◽  
Xujie Kang
Keyword(s):  
Path Analysis ◽  
3D Modeling ◽  
3D Models ◽  
Modeling Method ◽  
Numerical Comparison ◽  
3D Gis ◽  
Path Models ◽  
Different Shapes ◽  
3D Scene

Generating 3D path models (with textures) from indoor paths is a good way to improve the visualization performance of 3D indoor path analysis. In this paper, a quaternion-based piecewise 3D modeling method is proposed to automatically generate highly recognizable 3D models for indoor path networks. To create such models, indoor paths are classified into four types of basic elements: corridor, stairs, elevator and node, which contain six kinds of edges and seven kinds of nodes. A quaternion-based method is devised to calculate the coordinates of the designed elements, and a piecewise 3D modeling method is implemented to create the entire 3D indoor path models in a 3D GIS scene. The numerical comparison of 3D scene primitives in different visualization modes indicates that the proposed method can generate detailed and irredundant models for indoor path networks. The result of 3D path analysis shows that indoor path models can improve the visualization performance of a 3D indoor path network by displaying paths with different shapes, textures and colors and that the models can maintain a high rendering efficiency (above 50 frames per second) in a 3D GIS scene containing more than 50,000 polygons and triangles.

scholarly journals Investigation of errors in the representation of 3D models in determining the parameters of parts of devices BY the example of a two-mass rotating system with elastic coupling

2021 ◽  
Vol 47 (4) ◽  
pp. 8-19
Author(s):  
S. A. Bratchikov ◽  
E. A. Abramova
Keyword(s):  
Numerical Methods ◽  
3D Modeling ◽  
Computer Aided Design ◽  
3D Models ◽  
Design System ◽  
Basic Principles ◽  
Device Development ◽  
3D Objects ◽  
Computer Aided ◽  
Aided Design

Objective. The objective of the study is to consider the application field of modern device development and design methods using the means of 3D modeling and simulation of physical processes. The validity of the application and criteria for the reliability of the results obtained in the sequential design of the mechanical part of the electric drive and the control system are investigated.Methods. Methods of model representation of 3D objects in computer-aided design systems are considered, as well as methods for solving problems of determining strain under the applied load. Using the example of an elementary joint, the obtained results of the dynamic characteristic of an elastic shaft in a computer-aided design system are compared with those calculated analytically.Results. The article defines the basic principles and relations applicable to describing the shape of 3D models. Methods are shown by which it is possible to obtain information about the mass-centering model characteristics. The relations that form the basis of numerical methods for solving problems of determining elastic deformations of bodies are also given. The error that can occur when using insufficiently small elementary volumes in solving the problem of determining elastic deformation is shown.Conclusion. The use of 3D modeling in the design of complex technical systems is justified and speeds up production processes. However, numerical methods cannot always give an accurate result leading to the need to either increase the complexity of calculations or additionally adjust some designed device parameters.

Based on the Target Track Cam Design Method and Numerical Solution Research

2011 ◽  
Vol 143-144 ◽  
pp. 463-467
Author(s):  
L.S. Wang ◽  
F. Wei ◽  
H. Wang
Keyword(s):  
Mathematical Models ◽  
Numerical Solution ◽  
Design Method ◽  
Integrated Design ◽  
Displacement Velocity ◽  
Cam Mechanism ◽  
Cam Design ◽  
Target Track ◽  
Cam Profile ◽  
The Relationship

In this paper, a new design method of cam is developed .To illustrate this method,a car which adopts cam mechanism to achieve specific movements is designed. By establishing the relationship between the point coordinates of cam profile and the track through the relevant mathematical models, and using the infinitesimal elements method to solve the models, the discrete points coordinates of the cam profile are obtained. The displacement, velocity and acceleration of the direction arm are simulated by Pro/E. the accurate trace of cam profile can be obtained by the method. To make the CAD/CAE/CAM integrated design of cam is reasonable.

Automated Motion Program Formulation for Cam Mechanism Design

1998 ◽  
Author(s):  
Steven B. Shooter
Keyword(s):  
Decision Making ◽  
Mechanism Design ◽  
Dynamic Performance ◽  
Curve Matching ◽  
Analytical Technique ◽  
Dynamic Constraints ◽  
Cam Mechanism ◽  
Cam Profile ◽  
Aid Decision ◽  
Motion Types

Abstract The required motion for a cam mechanism is often an under-defined problem. Usually only part of the motion cycle is specified, giving the designer freedom to generate the remaining motion to best suit the dynamic constraints. Often, it is the motion program that has the greatest effect on the dynamic performance of the cam mechanism. Formulating the motion program often involves iteratively specifying motion types, selecting follower types and selecting cam characteristics. Many software programs have been developed to synthesize the cam profile when the desired motion program and the cam mechanism characteristics have been supplied, and the cam profile synthesis techniques have been well established. However, such programs do not assist the designer in formulating the motion program. This paper presents a software system which assists the designer through the process of formulating the motion program. The program provides information to aid decision making in this under-defined problem. It also includes an analytical technique for automating the curve-matching required to formulate the motion program. The automation of these procedures allows the designer to readily explore alternatives and produce a superior design.

Size optimization of cam mechanisms with translating roller followers

1998 ◽  
Vol 212 (5) ◽  
pp. 381-386 ◽  
Author(s):  
Q Yu ◽  
H P Lee
Keyword(s):  
Linear Programming ◽  
Present Method ◽  
Design Method ◽  
Size Optimization ◽  
Non Linear Programming ◽  
Cam Mechanism ◽  
Programming Techniques ◽  
Cam Profile ◽  
Design Requirements ◽  
Parametric Polynomials

The problem of size optimization of a cam mechanism with a translating roller follower is analysed in this paper using non-linear programming techniques and a family of parametric polynomials for describing the motion curve. The present method can include many factors, such as the kinematic features, including the acceleration, the velocity, the boundary conditions and the symmetry of the motion curve, the curvature of the cam profile and the amount of offset of the follower, in the process of optimization and can provide many choices for meeting various design requirements. Examples are presented to illustrate the proposed design method.

Sign in / Sign up

Export Citation Format

Share Document