A Feature-Based CAD-CAE Integrated Approach of Machine Tool and its Implementation

2011 ◽  
Vol 201-203 ◽  
pp. 54-58 ◽  
Author(s):  
Wen Tie Niu ◽  
Peng Fei Wang ◽  
Yu Shen ◽  
Wei Guo Gao ◽  
Li Na Wang
Keyword(s):  
Machine Tool ◽  
Dynamic Analysis ◽  
Parametric Design ◽  
Application Programming Interface ◽  
Integrated Approach ◽  
Parametric Modeling ◽  
Feature Model ◽  
Static And Dynamic Analysis ◽  
Cad System ◽  
Feature Based

An analysis feature-based CAD-CAE integrated approach was proposed to solve the problems of rapidly CAE modeling for static and dynamic analysis process of machine tool. Firstly, analysis features were defined in CAD system and analysis feature library was constructed for machine tool and its structural components. Secondly, analysis feature model was constructed by attaching analysis feature to CAD model interactively. Finally, ANSYS parametric design language (APDL) file was generated automatically by mapping analysis features to APDL codes, which realized the integration of CAD system and ANSYS system. Based on application programming interface (API) of SolidWorks, a parametric CAD-CAE tool oriented to static and dynamic analysis of machine tool was developed, which realized parametric modeling and automatic analysis of machine tool and improved design efficiency and quality of machine tool.

A Machine Tool Fixture Library Management System Based on Assembly Knowledge Description

2012 ◽  
Vol 549 ◽  
pp. 1073-1076
Author(s):  
Yan Cao ◽  
Dan Yang ◽  
Yu Bai
Keyword(s):  
Machine Tool ◽  
Management System ◽  
Group Technology ◽  
Parametric Design ◽  
Second Development ◽  
Library Management ◽  
Assembly Design ◽  
Library Management System ◽  
Development Technology ◽  
Feature Based

Based on Group Technology, a machine tool fixture library management system based on assembly knowledge description is put forward to maximize the reuse of fixture design knowledge and experience. According to GT classification results, fixture parts are divided into standard ones and non-standard ones. To support parametric assembly, a reuse library is used for parametric standard part design. For the non-standard parts, second development technology is used to realize their parametric design based on 3D model templates. Parametric assembly design is achieved based on assembly relation description. SolidWorks platform, VB programming language and Access database are used to develop the system that includes feature-based parameter-driven parts and assemblies for machine tool fixtures.

An Integrated Reverse Modeling Approach Based on Reconstruction of Features and Constraints

2012 ◽  
Vol 215-216 ◽  
pp. 639-642 ◽  
Author(s):  
Lan Kang ◽  
Ya Li ◽  
Zheng Ming Chen
Keyword(s):  
Reverse Engineering ◽  
Integrated Approach ◽  
Innovative Design ◽  
Cad System ◽  
Part Geometry ◽  
Modeling Approach ◽  
If Current ◽  
Cad Models ◽  
Feature Based ◽  
Constraints Satisfaction

Reverse engineering is an important tool to generate CAD models. This paper describes an integrated approach for modeling parts from point cloud to surfaces or solids based on features and constraints. The approach allows designers to integrate reverse engineering and feature-based CAD system in the reconstruction of parts. This approach has two advantages over current practice and the reconstructed models produced by this method are feature-based and constraints satisfaction, which provides a higher level description of part geometry rather than the tedious low-level editing of geometric descriptions as in reverse engineering. This method also facilitates modification and innovative design to the reconstructed parts, which would be extremely difficult or impossible to accomplish if current reverse engineering method is applied. In addition, it is a more convenient and practical way for designers. To illustrate the validation of this integrated modeling approach, a more complicated example is illustrated based on the approach.

Feature Recognition

2009 ◽  
pp. 90-108
Author(s):  
Xun Xu
Keyword(s):  
Feature Recognition ◽  
Geometric Model ◽  
Feature Model ◽  
Design System ◽  
Cad System ◽  
Domain Specific ◽  
Cad Models ◽  
Feature Based ◽  
High Level ◽  
Feature Based Design

Conventional CAD models only provide pure geometry and topology for mechanical designs such as vertices, edges, faces, simple primitives, and the relationship among them. Feature recognition is then required to interpret this low-level part information into high-level and domain-specific features such as machining features. Over the years, CAD has been undergoing fundamental changes toward the direction of feature-based design or design by features. Commercial implementations of FBD technique became available in the late 1980’s. One of the main benefits of adopting feature- based approach is the fact that features can convey and encapsulate designers’ intents in a natural way. In other words, the initial design can be synthesized quickly from the high-level entities and their relations, which a conventional CAD modeller is incapable of doing. However, such a feature-based design system, though capable of generating feature models as its end result, lacks the necessary link to a CAPP system, simply because the design features do not always carry the manufacturing information which is essential for process planning activities. This type of domain-dependent nature has been elaborated on in the previous chapter. In essence, feature recognition has become the first task of a CAPP system. It serves as an automatic and intelligent interpreter to link CAD with CAM, regardless of the CAD output being a pure geometric model or a feature model from a FBD system. To be specific, the goal of feature recognition systems is to bridge the gap between a CAD database and a CAPP system by automatically recognizing features of a part from the data stored in the CAD system, and based on the recognized features, to drive the CAPP system which produces process plans for manufacturing the part. Human interpretation of translating CAD data into technological information required by a CAPP system is thus minimized if not eliminated.

Research on the Variant Design Method Based on the Integration of CAD/CAE

2012 ◽  
Vol 224 ◽  
pp. 248-251
Author(s):  
Sha Na Wang ◽  
Fu Yun Liu ◽  
Yun Ze Yang ◽  
Kun Xu ◽  
Ning Jia
Keyword(s):  
Machine Tool ◽  
Parametric Design ◽  
Design Method ◽  
Prototype System ◽  
Design Technology ◽  
Variant Design ◽  
Cad System ◽  
Cae Technology ◽  
Cae System ◽  
Engineering Constraints

Component variant design method based on parametric design technology and parametric CAE technology are discussed. Based on the integration of CAD and CAE, a variant design method with the function to satisfy engineering constraints is put forward. Using VC++ and Jscript as developing tools, CAD system (SolidWorks) and CAE system (ANSYS) are redeveloped and integrated. A variant design method based on the integration of CAD/CAE is realized. A prototype system of the above variant design method is developed. As an example, variant design of workbench of a machine tool is realized. The variant design method and the variant design prototype system are verified.

Parameterized Modeling of Involute Helical Gear by UG Based on Symmetric Equation

2014 ◽  
Vol 651-653 ◽  
pp. 792-797
Author(s):  
Hong Sheng Chen ◽  
Su Tao Zhuang
Keyword(s):  
Parametric Design ◽  
Helical Gear ◽  
Parametric Modeling ◽  
Tooth Profile ◽  
Modeling Method ◽  
Profile Curve ◽  
Helical Gears ◽  
Parameterized Modeling ◽  
Feature Based ◽  
Transition Curves

Swept method is a commonly used parametric modeling method for helical gears. For the problem of tooth profiles distortion and parameters loss in parametric design, the symmetric equations that used to establish involutes and dedendum transition curves are proposed. The boundaries between teeth and the starting and ending angles of tooth profile curve are precisely calculated. Feature-based swept methods are applied as solutions. Instance modeling results demonstrate the accuracy of the methods and also reflect their preciseness and convenience.

scholarly journals Static and dynamic analysis of homogeneous Micropolar-Cosserat panels

2021 ◽  
pp. 1-53
Author(s):  
S. K. Singh ◽  
A. Banerjee ◽  
R. K. Varma ◽  
S. Adhikari ◽  
S. Das
Keyword(s):  
Dynamic Analysis ◽  
Static And Dynamic Analysis

A New Approach to the Rigid Finite Element Method in Modeling Spatial Slender Systems

2018 ◽  
Vol 18 (02) ◽  
pp. 1850017 ◽  
Author(s):  
Iwona Adamiec-Wójcik ◽  
Łukasz Drąg ◽  
Stanisław Wojciech
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Analysis ◽  
Equations Of Motion ◽  
Nonlinear Dynamic Analysis ◽  
New Approach ◽  
Static And Dynamic Analysis ◽  
Rigid Finite Element Method ◽  
Longitudinal Flexibility ◽  
Element Method

The static and dynamic analysis of slender systems, which in this paper comprise lines and flexible links of manipulators, requires large deformations to be taken into consideration. This paper presents a modification of the rigid finite element method which enables modeling of such systems to include bending, torsional and longitudinal flexibility. In the formulation used, the elements into which the link is divided have seven DOFs. These describe the position of a chosen point, the extension of the element, and its orientation by means of the Euler angles Z[Formula: see text]Y[Formula: see text]X[Formula: see text]. Elements are connected by means of geometrical constraint equations. A compact algorithm for formulating and integrating the equations of motion is given. Models and programs are verified by comparing the results to those obtained by analytical solution and those from the finite element method. Finally, they are used to solve a benchmark problem encountered in nonlinear dynamic analysis of multibody systems.

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