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Computer-aided process dimensioning

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Abstract

Conventionally, working dimensions have to be given before the construction of a tolerance chart can begin. Because the method of determining the working dimensions is based on trial and error, it is tedious and time-consuming. This paper proposes a method that can generate the working dimensions automatically from the process sequences and the blueprint dimensions. The method uses a relationship matrix to represent the process sequences and a special path-tracing technique to identify the process links. A unique algorithm is developed to reduce the unknown working dimensions to a system of linear equations, which is then solved using the Gauss elimination technique. This method can either be adopted by the process planner or implemented on a microcomputer. With this method, different processing sequences based on different factors, e.g. cost, machining time, etc., can be evaluated efficiently and economically. The developed program is then tested on a practical example.

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Authors and Affiliations

  1. School of Mechanical and Production Engineering, Nanyang Technological University, Nanyang Avenue, 2263, Singapore

    Bryan K. A. Ngoi & Ong Chee Teck

Authors
  1. Bryan K. A. Ngoi
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  2. Ong Chee Teck
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Ngoi, B.K.A., Teck, O.C. Computer-aided process dimensioning. Int J Adv Manuf Technol 8, 371–376 (1993). https://doi.org/10.1007/BF01751098

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  • DOI: https://doi.org/10.1007/BF01751098

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