Development of educational material for manufacturing engineering using stereo vision and 3D CAD/CAM

2011 ◽  
Author(s):  
Y. Oshima ◽  
T. Morishita
Keyword(s):  
Stereo Vision ◽  
Educational Material ◽  
3D Cad ◽  
Cad Cam ◽  
Manufacturing Engineering

Creating Attraction for Technical Education Material and its Educational Benefit (Development of Robotic Education Material Characterized by 3D CAD/CAM and Compact Stereo Vision)

2011 ◽  
Vol 23 (5) ◽  
pp. 665-675 ◽  
Author(s):  
Takeshi Morishita ◽  
Keyword(s):  
Stereo Vision ◽  
Education Program ◽  
Engineering Students ◽  
Technical Education ◽  
Vision System ◽  
Processing System ◽  
Circuit Board ◽  
3D Cad ◽  
Education Material ◽  
Cad Cam

This paper describes an attractive technical education program and material for engineering students that consists of 3D CAD/CAM technology, CAD/CAM circuit board manufacture, an image information processing system, stereo vision technology and control experiments involving a simple and compact robot equipped with a stereo vision system. In addition, this material, which incorporates 3D attraction, can provide an interesting experience in constructing robot mechatronics and programming for students. Results show that this technical education program can have an excellent effect in enabling students to acquire both hardware and software technology and to obtain control experience with actual robots. Finally, these results indicate that this education program is effective with technical students seeking to learn about system technology including robotics and mechatronics technology

Optimization of Trapezoidal Runner in Plastic Molding Based on MATLAB

2014 ◽  
Vol 552 ◽  
pp. 66-69
Author(s):  
Gui Jie Fan
Keyword(s):  
Obtuse Angle ◽  
Minimum Length ◽  
Special Effects ◽  
Plastic Molding ◽  
Injection Speed ◽  
3D Cad ◽  
Section Area ◽  
Cad Cam ◽  
Mould Design ◽  
Runner Design

The runner design is an important parts in plastic molding design. Its shape and dimensions have special effects on the molten plastic’s pressure, hot loss, injection speed, etc. At present, trapezoidal runner is used widely for better fluidity and lower assembly precision relatively compared with the circular runner. This paper uses the Fminsearch function of MATLAB and constructs an objective function based on the minimum length of the perimeter of the trapezoidal runner to optimize the trapezoidal runner section. The conclusion of this paper is that the perimeter of the trapezoidal runner is the shortest one when a equals c (shown as Fig.1), as well as the obtuse angle between a and c equals 120o. At this conditions, the volume of the molten plastic that flows through the runner section is maximum when the trapezoidal runner section area is given. The optimization results in the plastic mould design can used as the size or the constraints to drive the runner section in 3D CAD/CAM software, which can help the designer to get the trapezoidal runner section easily and quickly.

scholarly journals Analytical Assessment of Fatigue Strength of a Dental Crown

2020 ◽  
Vol 8 (6) ◽  
pp. 2689-2693
Keyword(s):  
Failure Analysis ◽  
Degrees Of Freedom ◽  
Field Variable ◽  
Static Fatigue ◽  
Medical Field ◽  
Element Analysis ◽  
3D Cad ◽  
Design For All ◽  
Cad Cam ◽  
Analytical Assessment

With the accomplishment of new engineering science and technologies, machineries formulated by the the technocrats are utilized in medical field. Biomedical Engineering has thus gained a prominent status in the recent years. Few decades ago, it was considered as weird thing if any mechanical engineers performed studies on dental area, but in today’s scenario mechanical engineers are doing studies as well as research in the area of dental science. In this paper an attempt has been made to select best crown material for molar tooth, So that an appropriate material can be placed in the human body which is most difficult task .so for designing a molar crown, modeling is done in pro/engineer software, it is one of the parametric 3D CAD/CAM/CAE solution widely used by mechanical engineers for designing any product .this software creates a complete 3D Digital model of the product. For this extensive research, design for all crowns will be the same but only material properties will be different. After design, failure analysis is done. Loss of ability to function normally is the study of failure analysis. This is accomplished by considering various loading conditions .Here finite element analysis is used, the standard principle underlying the FEM are simple. The word finite is used to describe the limited, or finite, number of degrees of freedom used to model the behavior of each element, the element are assumed to be connected to one another but only at interconnected joints, known as nodes. Considering a body through which the distribution of a field variable I.e. displacement or stress is required, this body could be subjected to various loads. Problem is solved by two methods: static fatigue and dynamic fatigue

Direct Building Manufacturing of Homes with Digital Fabrication

2012 ◽  
pp. 71-82 ◽  
Author(s):  
Lawrence Sass
Keyword(s):  
Digital Fabrication ◽  
Information Modeling ◽  
3D Cad ◽  
The Core ◽  
Construction Techniques ◽  
Building Information ◽  
Cad Cam ◽  
Cad Models ◽  
Paper Documentation ◽  
Small Building

Architecture, engineering, and construction industries maintain a long standing desire to enhance design communication through various forms of 3D CAD modeling. In spite the introduction of Building Information Modeling (BIM), designers and builders expect varying amounts of communication loss once construction has started due to indirect construction techniques or hand based methods to manufacture buildings. This is especially true for houses and small structures, buildings that makeup the core of villages and suburbs. Unfortunately, paper documentation and reading 3D CAD models on screen continue the trend of indirect production defined in most manufacturing industries as error. The emerging application of CAD/CAM within design and construction industries provides hope for elevated communication between design and building. With CAD/CAM, it is possible to manufacture buildings of all types and sizes directly from CAD files similar to mass produced artifacts, thus reducing complexity in communication between parties. This chapter is presentation of one process of direct manufacturing from CAD and the emerging possibilities for small building production using digital fabrication. The chapter will focus on houses to illustrate the potential of direct manufacturing of buildings from CAD data.

scholarly journals Integrated Interface Development Environment using STEP Universal Data Structure

2018 ◽  
Vol 7 (2.15) ◽  
pp. 27 ◽  
Author(s):  
T M.S. Tg Sulaiman ◽  
S B. Mohamed ◽  
M Minhat ◽  
A S. Mohamed ◽  
A R. Mohamed
Keyword(s):  
Data Structure ◽  
Relevant Information ◽  
Design Development ◽  
Product Model ◽  
Input Language ◽  
Development Environment ◽  
3D Cad ◽  
Cad Cam ◽  
G Code ◽  
Modern Manufacturing

Nowadays modern manufacturing demands advanced computer controller, having higher input language and less proprietary vendor dependencies. STEP stands for Standard for the Exchange of Product model data is the next generation of data model between CAD/CAM and CNC system. STEP is still under research and development all around the world. This paper describes the design, development and testing of an integrated Interface development environment for STEP file using Universal Data Structure, which aims to provide support for machining operation.  The system also aims to provide function of reading and extracting the relevant information associated with the machining data and to write the G-Code file. The sample of machined block is designed from 3D CAD modeler which consisted of features need to be machined from a blank workpiece and saved in the STEP file format. The validation process will be done using the simulation in the Mach3 software.  

Development of Tactile Globe for the Visually Impaired (Automation of Marking Using an Industrial Robot)

2017 ◽  
Vol 11 (2) ◽  
pp. 270-277
Author(s):  
Naoki Asakawa ◽  
◽  
Ryota Kito ◽  
Keigo Takasugi ◽  
Keyword(s):  
Machine Tools ◽  
Lead Time ◽  
Visually Impaired ◽  
Industrial Robot ◽  
Spherical Surface ◽  
Low Cost ◽  
Limited Range ◽  
3D Cad ◽  
Cad Cam ◽  
Short Lead Time

In spite of the importance of the globe as an educational and cultural tool, for visually impaired users, common globes are just spherical objects. Although there are commercially available globes for visually impaired users, globes that have convex and concave features on the surface denoting coastlines and country borders, most of them are expensive because they are made by hand. Consequently, visually impaired users wishing to purchase globes have a very limited range of choices. In terms of industrial production, producing globes with convex and concave surfaces essentially involves machining a spherical surface. For instance, with common machine tools, even positioning or marking a spherical surface of a certain size is very difficult operation since the posture of the tool must change dramatically. The purpose of the study is to develop a CAM system to design the surface of tactile globes suitable for individual needs and to manufacture them for the visually impaired at low cost and with a short lead time. In the report, as the first step, a method of holding the sphere and marking it via 3D-CAD/CAM technology and the control technology of an industrial robot is proposed. As a result, the system enables the marking of the coastlines and country borders on spheres automatically using our own CAM system and an industrial robot.

Special Issue on Rapid Prototyping

2012 ◽  
Vol 6 (5) ◽  
pp. 569-569 ◽  
Author(s):  
Koichi Morishige ◽  
Masahiro Anzai ◽  
Hiroyuki Narahara
Keyword(s):  
Rapid Prototyping ◽  
High Strength ◽  
Production Equipment ◽  
Processing Method ◽  
Layered Manufacturing ◽  
Special Issue ◽  
Cross Sectional ◽  
3D Cad ◽  
Material Development ◽  
Cad Cam

Layered manufacturing is the generic name for a processing method used to obtain an actual model by calculating cross-sectional shapes from 3D CAD data and stacking these shapes. Because it can realize any shape without needing skills for devising a processing method and fabricating fixtures, layered machining is expected to realize 3D printing that enables even inexperienced or amateur operators to obtain actual 3D shapes. Since the model such as injection molding can be fabricated without using dies and molds, layered manufacturing is now called rapid prototyping (RP). Since ever manufacturing of high-strength materials has become available, RP applications have been deployed in areas from models for more confirmation of shape to functional models attached to prototypes such as engines and used for test runs. In addition, the new concepts called rapid manufacturing (RM) and rapid tooling (RT), which are used in the manufacture of low-volume products and production equipment, have been proposed and implemented. This special issue focuses on RP technology. Among its many interesting papers are those that focus on new fabrication techniques, material development for RP, CAD/CAM systems for RP, new RP systems, and applications for RP. We are certain that you will find this issue both interesting and informative. We thank the authors for their generous cooperation and the editing staff for its many contributions.

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