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1 – 10 of over 3000
Article
Publication date: 1 January 1992

Nanua Singh and Dengzhou Qi

As most existing computer‐aided design systems do not provide partfeature information which is essential for process planning, automaticpart feature recognition systems serve as…

Abstract

As most existing computer‐aided design systems do not provide part feature information which is essential for process planning, automatic part feature recognition systems serve as an important link between Computer Aided Design (CAD) and Computer Aided Process Planning (CAPP). Attempts to provide a structural framework for understanding various issues related to part feature recognition. Reviews previous work in the field of part feature recognition and classifies known feature recognition systems for the sake of updating information and future research. Briefly introduces about 12 systems. Studies 31 systems and lists them in the Appendix based on 60 references. Comments on future research directions.

Details

Integrated Manufacturing Systems, vol. 3 no. 1
Type: Research Article
ISSN: 0957-6061

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Article
Publication date: 1 October 1995

Carolyn H.M. Hardaker and Gary J.W. Fozzard

Despite the benefits of computer‐aided design (CAD), its uptake by the garment industry in the UK has been somewhat slow. Many reasons have been suggested for this, one of which…

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Abstract

Despite the benefits of computer‐aided design (CAD), its uptake by the garment industry in the UK has been somewhat slow. Many reasons have been suggested for this, one of which is the lack of appropriately skilled designers and pattern cutters. Comments on this situation and describes a garment CAD‐training programme set up at De Montfort University, Leicester. This training programme was used as the basis of an attitude assessment. A questionnaire‐based survey was developed to quantify the designers’ opinions of CAD and specifically whether these opinions were influenced by the designer’s age or prior computing experience.

Details

International Journal of Clothing Science and Technology, vol. 7 no. 4
Type: Research Article
ISSN: 0955-6222

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Article
Publication date: 1 January 1989

Yunus Kathawala and Martin Scholich

Training is one of the key elements to the success ofcomputer‐aided design (CAD). In the past, CAD educators concentratedtheir efforts in design engineers and draftsmen. The trend…

Abstract

Training is one of the key elements to the success of computer‐aided design (CAD). In the past, CAD educators concentrated their efforts in design engineers and draftsmen. The trend in the manufacturing environment towards integration of computerised systems is discussed. This trend has created a great demand for CAD training tailored to the needs of users of systems that are linked to CAD.

Details

Journal of European Industrial Training, vol. 13 no. 1
Type: Research Article
ISSN: 0309-0590

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Article
Publication date: 1 March 1988

John Kronenberg BSc ARICS

Computer aided design’ and ‘Computer aided drafting’ have become part of the jargon of the construction industry of the 1980s. However, building surveyors have been slow to adopt…

Abstract

Computer aided design’ and ‘Computer aided drafting’ have become part of the jargon of the construction industry of the 1980s. However, building surveyors have been slow to adopt CAD. To a great extent this has been because of two misconceptions: that CAD is inapplicable to existing buildings because they lack repetition. that CAD is inapplicable to buildings because they are not square. Contrary to this widely held view, computer aided drafting can be effective and economically viable for refurbishment and rehabilitation projects. Drawings from refurbishment projects prepared using CAD will be used in this paper to demonstrate some of the advantages of CAD, and to identify those areas of the drawing production process where CAD can lead to increased productivity and other worthwhile benefits.

Details

Property Management, vol. 6 no. 3
Type: Research Article
ISSN: 0263-7472

Article
Publication date: 7 July 2020

Jialu Liang, Honglian Cong, Zhe Gao, Aijun Zhang and Zhijia Dong

The weft-knitted two-side jacquard fabric has the characteristics of complicated design principle and hard technical design. The purpose of this paper is to realize the…

Abstract

Purpose

The weft-knitted two-side jacquard fabric has the characteristics of complicated design principle and hard technical design. The purpose of this paper is to realize the computer-aided design of weft-knitted two-side jacquard fabric, and provide a certain reference for the development of this type of fabric.

Design/methodology/approach

The weft-knitted two-side jacquard fabric is divided into weft-knitted two-side similar pattern jacquard fabric and weft-knitted two-side independent pattern jacquard fabric. In order to achieve the purpose of this study, firstly, the structural characteristic of weft-knitted two-side jacquard fabric is analyzed. Then, the design principle of weft-knitted two-side jacquard fabric is studied. Next, the technical model of weft-knitted two-side jacquard fabric is established. Finally, the CAD flow chart of weft-knitted two-side jacquard fabric is proposed to realize the rapid product development.

Findings

Based on the above method, through the development example of weft two-side similar pattern jacquard fabric and weft two-side independent pattern jacquard fabric, the computer-aided design of the weft two-side jacquard fabric is verified.

Research limitations/implications

Because of limited research studies, three-dimensional computer-aided design of weft-knitted two-side jacquard fabric loop structure will be studied in the further research, and the technical design speed needs to be improved to meet the needs of large patterns and positioning patterns.

Practical implications

The computer-aided design of weft-knitted two-side jacquard fabric will offer a certain reference for product development, technical principles, performance research and computer simulation for the in-depth study of the fabric.

Social implications

The computer-aided design of weft-knitted two-side jacquard fabric will simplify the fabric design process and improve the efficiency of new fabric development, and provide the industries a time-saving and cost-saving approach for new fabrics development.

Originality/value

The author analyzes the structural characteristic of the fabric by the physical fabric, summarizes design principle of the fabric through production process, uses mathematical methods to establish a three-dimensional technical model of the fabric, and proposes the CAD flow chart of weft-knitted two-side jacquard fabric, which has good theoretical significance and practice of weft-knitted two-side jacquard fabric.

Details

International Journal of Clothing Science and Technology, vol. 33 no. 1
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 15 March 2011

S. Vinodh and D. Kuttalingam

The purpose of this paper is to investigate computer‐aided design (CAD) and computer‐aided engineering (CAE) as enablers of agile manufacturing (AM).

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Abstract

Purpose

The purpose of this paper is to investigate computer‐aided design (CAD) and computer‐aided engineering (CAE) as enablers of agile manufacturing (AM).

Design/methodology/approach

Based on the literature review, the importance of technology integration enabling AM has been found. CAD technology has been used for modelling baseline product; CAE has been used for deriving optimized parameters; new designs have been derived.

Findings

The feasibility of CAD and CAE as enablers of AM has been ensured.

Research limitations/implications

The study has been conducted only in one automotive sprocket manufacturing organization.

Practical implications

The practical feasibility of generating new products through technology integration has been ensured.

Originality/value

Very little research has been reported on technology‐integrated AM practices. In this study, CAD and CAE have been used for enabling product development.

Details

Journal of Manufacturing Technology Management, vol. 22 no. 3
Type: Research Article
ISSN: 1741-038X

Keywords

Article
Publication date: 13 May 2019

Igor Budak, Aleksandar Kiralj, Mario Sokac, Zeljko Santosi, Dominic Eggbeer and Sean Peel

Computer-aided design and additive manufacture (CAD/AM) technologies are sufficiently refined and meet the necessary regulatory requirements for routine incorporation into the…

Abstract

Purpose

Computer-aided design and additive manufacture (CAD/AM) technologies are sufficiently refined and meet the necessary regulatory requirements for routine incorporation into the medical field, with long-standing application in surgeries of the maxillofacial and craniofacial regions. They have resulted in better medical care for patients and faster, more accurate procedures. Despite ever-growing evidence about the advantages of computer-aided planning, CAD and AM in surgery, detailed reporting on critical design decisions that enable methodological replication and the development and establishment of guidelines to ensure safety are limited. This paper aims to present a novel application of CAD and AM to a single-stage resection and reconstruction of fibrous dysplasia in the zygoma and orbit.

Design/methodology/approach

It is reported in sufficient fidelity to permit methods replication and design guideline developments in future cases, wherever they occur in the world. The collaborative approach included engineers, designers, surgeons and prosthetists to design patient-specific cutting guides and a custom implant. An iterative design process was used, until the desired shape and function were achieved, for both of the devices. The surgery followed the CAD plan precisely and without problems. Immediate post-operative subjective clinical judgements were of an excellent result.

Findings

At 19 months post-op, a CT scan was undertaken to verify the clinical and technical outcomes. Dimensional analysis showed maximum deviation of 4.73 mm from the plan to the result, while CAD-Inspection showed that the deviations ranged between −0.1 and −0.8 mm and that the majority of deviations were located around −0.3 mm.

Originality/value

Improvements are suggested and conclusions drawn regarding the design decisions considered critical to a successful outcome for this type of procedure in the future.

Details

Rapid Prototyping Journal, vol. 25 no. 4
Type: Research Article
ISSN: 1355-2546

Keywords

Article
Publication date: 30 March 2010

S. Vinodh, S.R. Devadasan and C. Shankar

The purpose of this paper is to report a research which is conducted to examine the power of computer aided design (CAD) in achieving agility in traditional organizations.

1282

Abstract

Purpose

The purpose of this paper is to report a research which is conducted to examine the power of computer aided design (CAD) in achieving agility in traditional organizations.

Design/methodology/approach

The CAD model of the knob of an electronic switch was developed. This model was shown to the team of executives. The theoretical and practical knowledge provided by them were utilized to design new ten CAD models of the knob. The reactions of the executives about these new models were gathered and analyzed.

Findings

The creation of a CAD model of an existing product is found to be a useful input for evolving new models in an agile manner. It is found to be an easy task to gather the theoretical and practical knowledge for achieving design agility through the visualisation of CAD models.

Research limitations/implications

This paper is conducted on only one component manufactured by an electronic switches manufacturing organization. Although it appears to be a limitation of this paper, the nature of the design process carried out in this traditional organization mimics that of any other design practices carried out in the world. Hence, the contributions of this paper are applicable in traditional manufacturing environment.

Practical implications

Throughout the conduct of this research, the practitioners' views are gathered. Their views are favorable towards the successful usage of CAD model in achieving design agility.

Originality/value

For many years, CAD has been used for carrying out complex design projects. However, it appears that it has not been used in its simplest form to visualise and bring out new models electronically for achieving design agility. This simple approach is presented in this paper which may be used by both theorists and practitioners.

Details

Journal of Engineering, Design and Technology, vol. 8 no. 1
Type: Research Article
ISSN: 1726-0531

Keywords

Article
Publication date: 1 October 1996

Udayan Nandkeolyar, Amrik S. Sohal and Graham Burt

Reports on the computer‐aided design (CAD) upgrade implementation process at PBR Automotive Pty Ltd, Melbourne, Australia. Views the implementation as successful since many of the…

1197

Abstract

Reports on the computer‐aided design (CAD) upgrade implementation process at PBR Automotive Pty Ltd, Melbourne, Australia. Views the implementation as successful since many of the desired outcomes have been achieved or surpassed. The key success factors were detailed planning, user involvement and vendor support. These combined to create an atmosphere of excitement in the project and success. Reports on the future plans that include the development of an integrated information system at PBR which will involve customers and suppliers in addition to internal personnel. The CAD system upgrade serves as a launching board for the development of such a system.

Details

Integrated Manufacturing Systems, vol. 7 no. 5
Type: Research Article
ISSN: 0957-6061

Keywords

Article
Publication date: 28 October 2019

Ivana Špelic

In order to present a significant usage of the computer-aided design (CAD)/computer-aided manufacturing (CAM) systems in the apparel and textile industry, the current literature…

Abstract

Purpose

In order to present a significant usage of the computer-aided design (CAD)/computer-aided manufacturing (CAM) systems in the apparel and textile industry, the current literature has been observed. Although the CAD/CAM systems have also been increasingly applied to all fields apparel and textile manufacturing for the last few decades, improving the precision, productivity and the organization of the information flow, they have not been fully utilized in these industrial fields. The paper aims to discuss these issues.

Design/methodology/approach

The paper is structured in three main sections showing the vast applicability of the CAD/CAM systems, the benefits provided by them and the future trend in their development.

Findings

Although the initial development of the CAD/CAM systems strived to completely eliminate manual and time-consuming operations, they have not been accepted in practice due to their inflexibility at making changes and the time needed for regenerating a complex parametric model. The textile and apparel industries show slow progress in acquiring the CAD/CAM systems.

Originality/value

This CAD/CAM technology enabled the customization in the design process according to individual needs and directed the textile and the apparel industry to moving into new directions such as the mass customization to personalization. The paper makes clear that although this technological concept is rather old, the use of the CAD/CAM systems will inevitably broaden in terms of applicability to new production stages.

Details

International Journal of Clothing Science and Technology, vol. 32 no. 6
Type: Research Article
ISSN: 0955-6222

Keywords

1 – 10 of over 3000