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Faculty of Mechanical Engineering, Lj. (FSLJ)
  • Stochastic nature of manufacturing processes
    Peklenik, Janez
    ǂThe ǂcontribution reveals the research work in the field of manufacturing processes - cutting with defined tool geometry and grinding with grinding tools with typical random structures executed in ... the last forty years. The basic concept in these investigations is a system approach, where the cutting process represents a black box in which the transformation of the work material from the undeformed into deformed state and the separation of the chip take place. The inputs into the process: the structure of work materials, grinding tools, microgeometry etc. are of stochastic nature. This requires a completely different methods for modeling the manufacturing processes. That is to say that the deterministic modeling, prevailing today in this research, is capable of only limited explanations of the manufacturing processes. The important concepts are discussed in this context. The modeling or description of the cutting process by on-line measuring and processing the input and output energy time series in order to develop the transfer function of the process. And the second approach is related to the energy quanta and the entropy of the process which can be estimated on-line and used for adaptive control of a manufacturing process. Particular attention is paid to the influence of the micro structures of work materials on the power spectra of the cutting force time series. These results enabled us to obtain reliable statistical data to be used in the process optimisation procedures.
    Type of material - conference contribution
    Publish date - 2000
    Language - english
    COBISS.SI-ID - 3800347