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Article
Publication date: 1 February 1993

Sun‐Woh Lye and Nan‐Shing Ong

Assembly cost is one of the major contributing factors in the totalmanufacturing cost equation. It has been estimated, particularly in themechanical and electrical industries…

47

Abstract

Assembly cost is one of the major contributing factors in the total manufacturing cost equation. It has been estimated, particularly in the mechanical and electrical industries, that assembly costs can account for over 50 per cent of the overall manufacturing costs. Discussed is the development of a low‐cost PC‐based computer assisted tool, used to analyse the component geometric features from an engineering drawing for automatic assembly. A description of the algorithms used to evaluate the overall geometric dimensions, its alpha and beta symmetries from a DXF file will also be made. Goes on to compare the results between the simulated runs and the actual ones of various complex 2‐D and 21/2‐D components and this has been found to be satisfactory. Quicker estimates of the component handling times for assembly can therefore be achieved.

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Integrated Manufacturing Systems, vol. 4 no. 2
Type: Research Article
ISSN: 0957-6061

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Publication date: 1 October 1999

Nan‐Shing Ong and Li Pheng Khoo

A printed circuit board (PCB) assembly consists of a circuit board and a variety of components in different shapes and sizes placed at specific locations on the board. They are…

543

Abstract

A printed circuit board (PCB) assembly consists of a circuit board and a variety of components in different shapes and sizes placed at specific locations on the board. They are used extensively in a variety of products by many industries today. These products include, for example, computer terminals, televisions, electronic instruments, and process controllers. There are many types and models of automatic machines available for placing components on the boards. The component placement operation consists of all steps necessary to remove a component from its packaging materials and mount it onto the PCB. The components are supplied either from a set of feeders, magazines or matrix trays. Because of the extreme accuracy required, automatic equipment is mandatory for all but the smallest production volumes.

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Integrated Manufacturing Systems, vol. 10 no. 5
Type: Research Article
ISSN: 0957-6061

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Article
Publication date: 1 November 1997

Nan Shing Ong

Very little has been written on productivity improvements for a “made‐to‐order” manufacturing environment which is usually dominated by small manufacturing companies. Unlike large…

1729

Abstract

Very little has been written on productivity improvements for a “made‐to‐order” manufacturing environment which is usually dominated by small manufacturing companies. Unlike large companies which are capable of applying just‐in‐time (JIT) philosophies to ensure high productivity gains, small companies on the other hand still face specific problems in their production planning and control largely due to their limited available resources. Presents some effective corrective actions which can create tremendous impact for a small made‐to‐order manufacturing company. These actions can be implemented easily and within a short time frame.

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Industrial Management & Data Systems, vol. 97 no. 7
Type: Research Article
ISSN: 0263-5577

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Publication date: 1 June 1997

Nan‐Shing Ong, Chee‐Kai Chua and Eng‐Wah Lee

Presents the development of an AutoCAD development system (ADS) application program for the automatic analysis of parts in mechanical assembly. The primary goal is to provide…

475

Abstract

Presents the development of an AutoCAD development system (ADS) application program for the automatic analysis of parts in mechanical assembly. The primary goal is to provide design engineers with a tool for extracting the part’s characteristics from the 3‐D solid model AutoCAD database. With this information and other non‐geometric information, the time for assembling the part can be determined. Describes the algorithms used to evaluate the rotational symmetries from the solid model database. Twelve 3‐D solid models are designed to evaluate the program capabilities. The overall performance of the program is satisfactory in terms of speed. It also provides a low‐cost PC‐based, fully‐functional alternative to the more expensive workstation‐based analysis program.

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Integrated Manufacturing Systems, vol. 8 no. 3
Type: Research Article
ISSN: 0957-6061

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Article
Publication date: 30 November 2004

Narendra Rustagi

The ability of small businesses to make and adjust to the paradigm shift needed to benefit from the Japanese production theory has been questioned in the literature. Zangwill…

387

Abstract

The ability of small businesses to make and adjust to the paradigm shift needed to benefit from the Japanese production theory has been questioned in the literature. Zangwill (1992) questioned the limits of the Japanese Production Theory (JPT) and in a subsequent paper (Zangwill, 1994) held on to his argument about the limits of the Japanese Production Theory. In this paper, the Japanese Production Theory is first discussed, followed by a discussion of the consistency between the traditional EOQ theory and the Japanese production theory, critique of the Zangwill’s argument, and issues related to the relevance of the Japanese production theory to small businesses.

Details

International Journal of Commerce and Management, vol. 14 no. 3/4
Type: Research Article
ISSN: 1056-9219

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