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Author: search.filters.author.Riewruja, VanchaiSubject: search.filters.subject.Bitmap picture

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    Item type:Publication,
    Bitmap picture to toolpaths converter for NC machine
    (2010-12-01)
    Cheypoca, Thepjit
    ;
    Petchmaneelumka, Wandee
    ;
    Tammaruckwattana, Sirichai
    ;
    Riewruja, Vanchai
    A simple method to create the toolpaths from bitmap picture of the workpiece for NC machine is described in this article. Halftone process is used to reproduce a continuous tone picture to binary tone picture for making a prototype picture. The obtained two dimensions picture with halftone process is employed to create the toolpaths of the sample workpiece. The workpiece dimension can be scaled to limitation of work table of NC machine by user with independent of picture resolution. The toolpaths are created as cutter location data (CL) that can be imported to postprocessor for NC machine. The proposed method is developed using visual C# programming language under window environment. Experimental implementation exhibits that the proposed bitmap picture to toolpath converter is efficient for the postprocessor to generate machine command for sculpture the workpiece from bitmap picture. ©ICROS.
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    High efficiency postprocessor for generic NC machine
    (2010-12-01)
    Cheypoca, Thepjit
    ;
    Lekthamrong, Chanon
    ;
    Koomgaew, Chitpol
    ;
    Wuti, Virot
    ;
    Riewruja, Vanchai
    Postprocessor for generic numerical control (NC) machines is introduced in this article. The proposed postprocessor can convert the cutter location data from general CAD/CAM system or the path data from halftone bitmap picture to NC machine control command in the form of standard G-code. The purpose of this work is proposed a high efficiency postprocessor that can be generated linear and helical interpolation in G-code machine command without requiring CAD/CAM system facility. The input data of the postprocessor can also be directly acquired from x-y coordinates of workpiece. The proposed postprocessor is developed using visual C# programming language under window XP environment. G-code generated from the proposed postprocessor using the cutter location data of sample bitmap picture is used for experimental demonstration with generic NC machine. As the result, the proposed postprocessor exhibits a benefit for simple NC machine tool. ©ICROS.