scholarly journals AUTOMATIC DESIGN FEATURES OF COMPLEX SHAPE DETAILS AND TECHNOLOGY OF THEIR MANUFACTURING

2021 ◽  
Vol 2 (39) ◽  
pp. 59-64
Author(s):  
V. Korotkov
Keyword(s):  
Computer Aided Design ◽  
High Performance ◽  
Numerical Data ◽  
Complex Surface ◽  
Project Work ◽  
Radius Of Curvature ◽  
Cnc Machines ◽  
Surface Description ◽  
Aided Design ◽  
Automation Tools

The creation of modern high-performance machines often involves design of details with complex surfacese and made with high precision. At the stage of design and preparation of production, project work is carried out using automation tools and modern information and computer technologies. The process of creating a project is accompanied by the preparation of appropriate documentation, sufficient to solve all possible questions, starting with the formation of a design task and disposal of the product at the end of its operation. According to statistics, most details in mechanical engineering are simple in shape, relatively technological in production, and their surfaces are most often described in the drawings by a set of lines and circles (radius of curvature). This approach is economically justified and will ensure the reliable operation of the product during operation. Significant difficulties arise when it is necessary to design parts with surfaces of complex geometric shape, when the geometric parameters are set by coordinate points. The accuracy of surface description depends on the number of such points and the accuracy of numerical data. Typical examples include turbine impellers, parts with aerodynamic surfaces that are used, for example, in the aerospace or rocket industries. The process of manufacturing such parts is accompanied by overcoming specific difficulties in describing complex surfaces at the stages of design and technological preparation, as well as directly in the manufacture of parts on technological equipment, intermediate and final control of geometric accuracy. An option for an effective solution of such problems is to record complex smooth surfaces, predefined by a set of coordinate points, splines. Modern design automation tools make it possible to use this mathematical method for modeling complex geometric objects and use it to calculate the trajectories of the forming tool on CNC machines. On the example of parts from production, which has a complex surface, using computer-aided design systems considered options for making design and technological design decisions for production preparation, equipment design, control the accuracy of shaping when machining on CNC machines.

scholarly journals Design of complex surface machining on NC lathes in Esprit CAD system

2018 ◽  
Vol 2018 (1) ◽  
pp. 28-36 ◽  
Author(s):  
Владимир Гусев ◽  
Vladimir Gusev ◽  
Елена Савина ◽  
Elena Savina
Keyword(s):  
Computer Aided Design ◽  
High Performance ◽  
Control Program ◽  
Complex Surface ◽  
Surface Machining ◽  
Cad Systems ◽  
Cad System ◽  
Computer Aided ◽  
Simultaneous Use ◽  
Aided Design

A high-performance and accurate machining of complex special surfaces with the aid of NC equipment at the simultaneous use of four and more controlled coordinate axes is impossible without application of modern CAD systems and post-processors. Functional potentialities and a methodology for the design of complex surface machining in a "flange" part in modern CAD Esprit system are considered. Control commands are described the realization of which ensures a procedure for a computer aided design of technology, the development of a control program and simulation of operation motions of working units in a lathe. The simulation of profile surface turning is described in an intelligible way which is particularly significant for the comprehension and use of material presented.

scholarly journals Features of technological basing in machining parts on CNC machines

2018 ◽  
Vol 224 ◽  
pp. 01078
Author(s):  
Nicolay V. Nosov ◽  
Andrey A. Cherepashkov
Keyword(s):  
Computer Aided Design ◽  
Complex Shape ◽  
Electronic Measuring ◽  
Cnc Machines ◽  
Control Programs ◽  
Integrated Technique ◽  
Aided Design ◽  
And Control ◽  
Numerical Program ◽  
Numerical Program Control

The article discusses the problems of computer aided design and technological preparation of production of complex shape parts on machines with numerical program control. An integrated technique for designing processes and control programs for CNC machines is proposed and described, using the technique of software-based referencing and modern electronic measuring tools.

scholarly journals Computer-aided design and Computer-aided engineering

2018 ◽  
Vol 170 ◽  
pp. 01115 ◽  
Author(s):  
Alexander Kolbasin ◽  
Oksana Husu
Keyword(s):  
Computer Aided Design ◽  
High Performance ◽  
New Technologies ◽  
Production Systems ◽  
Computer Aided Engineering ◽  
Qualified Personnel ◽  
Computer Aided ◽  
Major Factors ◽  
Engineering Modeling ◽  
Aided Design

In modern industrial production some of the major factors of successful development include: cost reduction of the production, im-provement of its quality, as well as help to minimise the time in market en-try. Computer-aided design and Computer-aided engineering (CAD / CAE - systems) are the most effective for implementation of these requirements. Possible use of this engineering modeling simulation in conjunction with the power and speed of high performance computing could reduce costs and time of each cycle of designing, and also significantly reduce devel-opment time. The introduction of new technologies, the use of high quality products and engagement of qualified personnel would allow businesses and organizations to get on a path of innovative development of design and production systems.

Trends in Electrical Engineering Education — A 25-Year Retrospective

1988 ◽  
Vol 25 (3) ◽  
pp. 209-217 ◽  
Keyword(s):  
Engineering Education ◽  
Computer Architecture ◽  
Computer Aided Design ◽  
Electrical Engineering ◽  
Electrical Machines ◽  
Project Work ◽  
Digital Electronics ◽  
Electrical Engineering Education ◽  
Aided Design

The paper considers the changes which have occurred in Electrical Engineering Education over the last twenty-five years, with reference to specific articles published during the lifetime of IJEEE. 25 years ago courses in electrical engineering included substantial coverage of mechanical engineering topics and detailed treatment of electrical machines. Today the emphasis has shifted very considerably towards digital electronics, computer architecture, programming and computer aided design (CAD). Greater attention is paid to project work and the role of the engineer in society.

High Performance SiGe HBT Performance Variability Learning by Utilizing Neural Networks and Technology Computer Aided Design

2020 ◽  
Vol 98 (5) ◽  
pp. 127-134
Author(s):  
Henry Lee Aldridge ◽  
Jeffrey B Johnson ◽  
Rajendran Krishnasamy ◽  
Vibhor Jain ◽  
Rahul Mishra ◽  
...  
Keyword(s):  
Neural Networks ◽  
Computer Aided Design ◽  
High Performance ◽  
Sige Hbt ◽  
Performance Variability ◽  
Computer Aided ◽  
Aided Design

Optimisation of 4H-SiC Enhancement Mode JFETs for High Performance and Energy Efficient Digital Logic in Extreme Environments

2011 ◽  
Vol 413 ◽  
pp. 391-398 ◽  
Author(s):  
Hassan Habib ◽  
Nicholas Wright ◽  
Alton B. Horsfall
Keyword(s):  
Silicon Carbide ◽  
High Temperature ◽  
Energy Efficient ◽  
Computer Aided Design ◽  
High Performance ◽  
Extreme Environments ◽  
Enhancement Mode ◽  
Power Resources ◽  
Commercial Device ◽  
Aided Design

The commercialisation of Silicon Carbide devices and circuits require high performance, miniaturised devices which are energy efficient and can function on the limited power resources available in harsh environments. The high temperature Technology Computer Aided Design (TCAD) simulation model has been used to design and optimise a potential commercial device to meet the current challenges faced by Silicon Carbide technology. In this paper we report a new methodology to optimise the design of high temperature four terminal enhancement mode n-and p-JFETs for Complementary JFET (CJFET) logic.

scholarly journals Isothermal Combustor Prediffuser and Fuel Injector Feed Arm Design Optimization Using the prometheus Design System

2015 ◽  
Vol 138 (6) ◽  
Author(s):  
Xu Zhang ◽  
David J. J. Toal ◽  
Andy J. Keane ◽  
Frederic Witham ◽  
Jonathan Gregory ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
High Performance ◽  
Best Practice ◽  
Design System ◽  
Automatic Identification ◽  
Processing Unit ◽  
Fuel Injector ◽  
Graphical Processing ◽  
Modeling Strategy ◽  
Aided Design

The prometheus combustor design system aims to reduce the complexity of evaluating combustor designs by automatically defining preprocessing, simulation, and postprocessing tasks based on the automatic identification of combustor features within the computer-aided design (CAD) environment. This system enables best practice to be codified and topological changes to a combustor's design to be more easily considered within an automated design process. The following paper presents the prometheus combustor design system and its application to the multiobjective isothermal optimization of a combustor prediffuser and the multifidelity isothermal optimization of a fuel injector feed arm in combination with a surrogate modeling strategy accelerated via a high-performance graphical processing unit (GPU).

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