Multiresolution offsetting and loose convex hull clipping for 2.5D NC machining

Pang, Junhua; Narayanaswami, Ranga

doi:10.1016/s0010-4485(03)00139-8

Cited by 10 publications

(3 citation statements)

References 14 publications

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“…The generation of offset curves is a fundamental and well known problem in CAD/CAM and CNC machining [6][7][8][9]. In this section, the generation of an accurate motion along the offset of an ellipse is treated as a locus tracing problem [10].…”

Section: Development Of the Interpolation Algorithmmentioning

confidence: 99%

New CNC Programming Functions Based on Elliptical Motion

Omirou

Fyrillas

2013

Journal for Manufacturing Science &Amp; Production

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This paper proposes a set of four elliptical features that can enhance the programming capabilities of a modern CNC system. Namely, a real-time interpolation algorithm for motion generation along an ellipse and its offset, machining of an elliptical pocket, and drilling a series of equidistant holes along an elliptical path. The paper analytically describes the implementation of the new functions while the G-codes, along with their complementary requisite data needed to be introduced in the CNC part program, are exemplified with simulation and actual machining tests for each feature.

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Section: Development Of the Interpolation Algorithmmentioning

confidence: 99%

New CNC Programming Functions Based on Elliptical Motion

Omirou

Fyrillas

2013

Journal for Manufacturing Science &Amp; Production

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“…This method could not deal with the B-spline models. Narayanaswami and Pang investigated the applicability of multiresolution analysis using B-spline wavelets to NC machining 2D objects [2,7]. They used Finkelstein's method to estimate the deviation, and used end-point interpolating uniform B-spline wavelet, which the number of control points must be 2 3 j + .But in practice, the number of control points may not satisfy the rule.…”

Section: Related Workmentioning

confidence: 99%

Wavelet-Based Tool Path Generation for Contour NC Machining

Zhao

2012

AMM

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The high resolution curves could be transformed to low resolution curves by wavelet analysis. A new method for boundary preserving of the low resolution curve by modify the knot vector and the control points is represented. The definition of the deviation curve is proposed, and the discrete deviation curve method is represented to estimate the deviation between the low and high resolution curves. Wavelet-based tool path is generated for the contour NC machining by using the low resolution curves as the references. The experimental results demonstrate that the wavelet-based tool path has less information and is smoother than the traditional method’s. So it could reduce the calculating amount and improve the machining efficiency.

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“…Since this is an epitrochoid curve, our interest is focused on the motion generation along the offset of the epitrochoid. The generation of offset curves is a fundamental and well-known problem in CAD/CAM and CNC machining [11][12][13][14]. In this paper, the generation of an accurate motion along the offset of the epitrochoid is treated as a locus-tracing problem [7].…”

Section: Offset Tracing For An Epitrochoid Curvementioning

confidence: 99%