Implementation of computer-aided design systems (CAD) in a machine-building enterprise: limitations and opportunities

2020 ◽  
pp. 53-60
Author(s):  
E.V. Krukhmalev ◽  
◽  
V.V. Panchuk ◽  
Keyword(s):  
Production Process ◽  
Computer Aided Design ◽  
World Market ◽  
Machine Building ◽  
Software Products ◽  
Modern Engineering ◽  
Computer Aided ◽  
State Of The Economy ◽  
The One ◽  
Aided Design

The article highlights issues related to factors that affect the introduction of computer-aided design (CAD) systems in modern machine-building industries. The purpose of the work is to determine the main limitations and possibilities of using CAD in production and to consider the main trends in the development of system solutions for mechanical engineering problems. The theoretical basis of the work is data analysis and analytical study of the current state of proposals for CAD solutions. Electronic modeling systems allow not only to optimize the production process, reduce costs, but also are indispensable requirements for the competitiveness of modern engineering products on the world market. They allow you to carry out operational, remote interaction on the development and production of products, bringing it to the international market. Despite the variety of possibilities offered by CAD solutions from various companies and vendors, the request for its implementation by enterprises is very limited. The crisis state of the economy and industrial production is also not an incentive to implement such solutions. In this regard, it is necessary, on the one hand, to study in detail the evaluation of the effectiveness of implementing CAD technologies, and on the other hand - the most flexible software products that are adapted to the real capabilities and requirements of a particular enterprise, production process, and final product.

scholarly journals The Influence of Exposure Energy Density on Porosity and Microhardness of the SLM Additive Manufactured Elements

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2304 ◽  
Author(s):  
Janusz Kluczyński ◽  
Lucjan Śnieżek ◽  
Krzysztof Grzelak ◽  
Janusz Mierzyński
Keyword(s):  
Computer Aided Design ◽  
Complex Geometry ◽  
Final Analysis ◽  
Machine Building ◽  
Layer By Layer ◽  
Laser Melting ◽  
Measurement Results ◽  
Computer Aided ◽  
Exposure Energy ◽  
Aided Design

Selective laser melting (SLM) is an additive manufacturing technique. It allows elements with very complex geometry to be produced using metallic powders. A geometry of manufacturing elements is based only on 3D computer-aided design (CAD) data. The metal powder is melted selectively layer by layer using an ytterbium laser. This paper contains the results of porosity and microhardness analysis made on specimens manufactured during a specially prepared process. Final analysis helped to discover connections between changing hatching distance, exposure speed and porosity. There were no significant differences in microhardness and porosity measurement results in the planes perpendicular and parallel to the machine building platform surface.

scholarly journals Computer aided production process design work methods

Mechanik ◽  
2017 ◽  
Vol 90 (8-9) ◽  
pp. 805-807
Author(s):  
Izabela Rojek
Keyword(s):  
Neural Networks ◽  
Expert System ◽  
Production Process ◽  
Process Design ◽  
Computer Aided Design ◽  
Design Work ◽  
Production Processes ◽  
Computer Aided ◽  
Research Procedure ◽  
Aided Design

The article presents the computer aided design methods as applied for arrangement of production processes in the range from the simplest to the most advanced ones. The idea behind the research procedure as conducted by the author was to develop a method, models and expert system that would resemble a human expert in the field. This goal was achieved using neural networks.

scholarly journals AUTOMATION OF STRUCTURAL AND PARAMETRIC ANALYSIS OF PROJECT DECISIONS AND TRAINING OF THE DESIGNER OF MACHINE-BUILDING PRODUCTS WITH CAD COMPASS

2019 ◽  
Vol 2018 (2) ◽  
pp. 26-33
Author(s):  
Александр Афанасьев ◽  
Afanasyev Afanasyev ◽  
Сергей Бригаднов ◽  
Sergey Brigadnov
Keyword(s):  
Adaptive Learning ◽  
Computer Aided Design ◽  
Parametric Analysis ◽  
Three Dimensional ◽  
Machine Building ◽  
Building Products ◽  
Computer Aided ◽  
Design Solutions ◽  
Aided Design

The actual task in the field of computer-aided design of machine-building objects is to increase the level of automation of structural-parametric analysis of design solutions due to the repetition of their use, reducing the number of design operations and ensuring the corresponding competencies of designers. Developed methods and algorithms should ensure the acquisition of the necessary competencies for the designer for successful project activities in the field of computer-aided design, increasing the effectiveness of training. The system of analysis of design solutions should improve the quality of design solutions implemented in CAD KOMPAS-3D. In this paper, an overview of methods, systems and tools for analyzing design solutions implemented in the CAD-3D environment. The main features of such systems are described, their main disadvantages are identified: the lack of functions for determining non-optimal sequences of design operations, the inability to automatically rebuild a three-dimensional model of a machine-building product on the basis of analysis of the design model tree. A complex system for the analysis of project solutions and the training of a designer was developed and implemented, based on methods, models and algorithms for analysis and adaptive learning. The results of a computational experiment are presented, on the basis of which it can be concluded that the use of developed software enhances the efficiency and quality of the designer's training in the processes of constructing three-dimensional solid-state machine-building products in CAD KOMPAS-3D.

Reconstruction of Trimmed NURBS Surfaces for Gap-Free Intersections

2020 ◽  
Vol 20 (5) ◽  
Author(s):  
Benjamin Urick ◽  
Richard H. Crawford ◽  
Thomas J. R. Hughes ◽  
Elaine Cohen ◽  
Richard F. Riesenfeld
Keyword(s):  
Computer Aided Design ◽  
Engineering Practice ◽  
Global Parameter ◽  
Trimmed Surfaces ◽  
File Formats ◽  
Modern Engineering ◽  
Computer Aided ◽  
Step Algorithm ◽  
Aided Design ◽  
User Knowledge

Abstract The modern engineering technologies of computer-aided design (CAD), computer-aided engineering (CAE), and computer-aided manufacturing (CAM) are ubiquitous in engineering practice. They are focused on creating, analyzing, and fabricating engineering artifacts represented as geometric models. Historically, these technologies developed independently, with different geometric representations that are customized to the needs of the technology. As a result, the combined use of these technologies has led to differences in data structures, file formats, and user knowledge and practice, requiring translation of representations between systems to support interoperability. Complicating this situation is the approximate nature of modeling operations in CAD systems, which can result in gaps at the boundary curves between mating trimmed surfaces of a model. The research presented here is aimed at removing the gaps between trimmed surfaces, resulting in a “watertight” model that is suitable for use directly by downstream applications. A three-step algorithm is presented that includes analysis of the parametric space of the trimming curves, reparameterization to create a global parameter space, and reconstruction of the intersecting surfaces to ensure continuity at the trimming curve.

scholarly journals Anatomical Shaping for Zirconia Custom Implant Abutment to Enhance Anterior Esthetic: A Clinical Technique

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Mohammed Alshehri ◽  
Mohammed Alghamdi ◽  
Abdullah S. Alayad
Keyword(s):  
Computer Aided Design ◽  
Innovative Technology ◽  
Dental Crowns ◽  
Incisal Edge ◽  
Custom Implant ◽  
Optical Effects ◽  
Computer Aided ◽  
Cad Cam ◽  
The One ◽  
Aided Design

Abutments are used in dentistry to attach dental crowns to dental implant. Currently, zirconia custom abutment is the one which is mostly used in restorations, since it offers several advantages, especially better esthetics and prevention from infection. Several innovations are done in the implant designs and procedures to achieve better esthetics. Computer-aided design & computer-aided manufacturing (CAD/CAM) system is widely used innovative technology in dentistry. This technology offers custom implants that help to achieve better esthetics and good internal fit. This procedure used a novel technique of anatomical modification of the final abutment incisal edge from straight anatomical edge to irregular one with a mamelon-incisal effect to enhance esthetic, shade matching, and anatomical replication of incisal structure that resembles the natural incisor. Usually, dental technicians will perform facial and incisal cut-back and apply porcelain layers to the crown in order to reproduce the translucency and the other optical effects that most closely match that of natural dentin and enamel, especially at the incisal edge. These optical effects will make the prosthetic crown look more natural and esthetically pleasant. By this presented technique will help the dental technician to achieve highly esthetic crown with completely digital workflow without the need for porcelain layering. The procedure was also followed up to 3, 6, and 12 months after the surgery and found no complications or complaints from the patient and esthetically satisfied.

The current state of affairs in 3D modeling of machine-building profile parts

2021 ◽  
pp. 32-38
Author(s):  
E.T. Agaev ◽  
◽  
A.Yu. Bekmeshov ◽  
Keyword(s):  
Computer Aided Design ◽  
Machine Building ◽  
Software Environment ◽  
Current State ◽  
Computer Aided ◽  
Correct Representation ◽  
Design Systems ◽  
State Of Affairs ◽  
Aided Design

The article discusses the method of improving the quality of computer-aided design of machine-building products based on the introduction of the concept of 3D drawing. A comparative analysis of the application of a 3D drawing and the use of a standard flat drawing for the manufacture of machine-building profile products on modern CNC machines is given. The 3D drawings of the products are developed in the SolidWorks software environment. Based on the analysis, it is concluded that the use of 3D drawings in compliance with their correct representation in computer-aided design systems will reduce the time for the manufacture of relevant parts.

Issues of Similarity in Engineering Design

2006 ◽  
Author(s):  
Srinivasan Anandan ◽  
Sudhakar Teegavarapu ◽  
Joshua D. Summers
Keyword(s):  
Engineering Design ◽  
Computer Aided Design ◽  
Design Problems ◽  
Design Models ◽  
Process Plans ◽  
Engineering Design Problems ◽  
Computer Aided ◽  
Design Requirements ◽  
The One ◽  
Aided Design

A useful way to generate solutions to engineering design problems is to compare the solutions of design problems similar to the one at hand and validate the solutions to satisfy the new design requirements. This process involves evaluating the similarity between the design problem at hand and the various design problems in the repository. The purpose of this paper is to investigate the meaning and the use of similarity in engineering design. Various similarity theories in literature have been explored. Previous applications of these theories are limited to the retrieval of similar computer-aided design models and process plans. This paper extends the applications of these theories to the various stages of the design process.

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