Model based NC programming for end milling operations

Shozo Takata, Ming Dar Tsai

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    5 Citations (Scopus)

    Abstract

    This paper describes a cutting simulation system and its application to NC programming of pocket operations. The cutting simulator has a function of physical simulation as well as geometric simulation. In the geometric simulation, changes in the geometry of workpieces are evaluated by means of a solid modeling system. In the physical simulation, various cutting state parameters such as cutting force, machining error and chatter vibration are evaluated based on cutting process models in addition to the results of the geometric simulation. The contour parallel tool path for pocket machining is generated by means of a Voronoi diagram of the machining area. Cutting conditions are selected on the basis of constraints on multiple cutting state parameters, such as average cutting torque, maximum cutting torque acting on a flute, machining error and chatter vibration. Based on an analysis of the effects of changes in the cutting conditions on the cutting state parameters, strategies to avoid violating the constraints are discussed. An algorithm of providing additional tool path segments is proposed to solve the problem of abrupt increase in the engage angle at corners, and their generation is demonstrated with an illustrative example.

    Original languageEnglish
    Title of host publicationAmerican Society of Mechanical Engineers, Production Engineering Division (Publication) PED
    Place of PublicationNew York, NY, United States
    PublisherASME
    Pages809-818
    Number of pages10
    Volume68-2
    Publication statusPublished - 1994
    EventProceedings of the 1994 International Mechanical Engineering Congress and Exposition - Chicago, IL, USA
    Duration: 1994 Nov 61994 Nov 11

    Other

    OtherProceedings of the 1994 International Mechanical Engineering Congress and Exposition
    CityChicago, IL, USA
    Period94/11/694/11/11

    ASJC Scopus subject areas

    • Industrial and Manufacturing Engineering
    • Mechanical Engineering

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  • Cite this

    Takata, S., & Tsai, M. D. (1994). Model based NC programming for end milling operations. In American Society of Mechanical Engineers, Production Engineering Division (Publication) PED (Vol. 68-2, pp. 809-818). ASME.