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  • 1
    Electronic Resource
    Electronic Resource
    The Noded graph approach to stack analysis (1998)
    Springer
    The international journal of advanced manufacturing technology 14 (1998), S. 343-349 
    Details
    ISSN: 1433-3015
    Keywords: Geometric dimensioning and tolerancing ; Graphical model ; Stack analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The tolerance chart is a graphical method for representing the manufacturing dimensions of a workpiece or assembly, at all stages of its manufacture. The chart provides an intermediate control system of checks and balances to ensure that processing dimensions and tolerances will meet those specified on the print. Tolerance charts are generally used in studying the dimensional problems on individual parts. However, they have proved tedious in their application to assemblies. This paper presents a simple and systematic approach to the process of tolerance stack analysis. The “Noded graph” model is constructed, representing the given and the unknown dimensions. Links are then established, using the model, which help to formulate the stack path of interest into a linear equation. The equation is used to complete the tolerance stack analysis module. This will be explained using a variety of geometric dimensioning and tolerancing examples. In addition, it is simple and hence easy to practise and very logical.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01178913
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Optimum assembly using a component dimensioning method (1996)
    Springer
    The international journal of advanced manufacturing technology 11 (1996), S. 172-178 
    Details
    ISSN: 1433-3015
    Keywords: Component dimensioning ; Optimum assembly
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01351322
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    Paper (German National Licenses)
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