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Optimum assembly using a component dimensioning method

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Abstract

Many tolerance allocation methods based primarily on cost optimisation have been developed in recent years. However, the dimensions of the assembly parts are usually determined by convenience or design constraints other than the requirements of the assembly itself. The dimensions are often determined to give sufficient clearance during assembly without much consideration given to their tolerances. This is usually followed by a tolerance analysis to check for interference. The dimensions are then adjusted to eliminate any interferences. There is no control over the size of the clearance of an assembly.

This paper presents a new approach of dimensioning the components of an assembly which would allow real control over the size of clearance or interference in an assembly. A unique algorithm in conjunction with a relationship matrix is developed to formulate the dimensions in a tolerance chain into a linear equation. This linear equation is then used to develop the tolerance analysis module. The dimensioning module is accomplished using a separate algorithm in conjunction with the linear equation established. The tolerance analysis and the dimensioning modules are subsequently tested on a number of examples.

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References

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Authors and Affiliations

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

    B. K. A. Ngoi & C. T. Ong

Authors
  1. B. K. A. Ngoi
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  2. C. T. Ong
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Ngoi, B.K.A., Ong, C.T. Optimum assembly using a component dimensioning method. Int J Adv Manuf Technol 11, 172–178 (1996). https://doi.org/10.1007/BF01351322

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  • DOI: https://doi.org/10.1007/BF01351322

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