Approximate methods for simulation and verification of numerically controlled machining programs

Jerard, Robert B.; Hussaini, S. Z.; Drysdale, Robert L. Scot; Schaudt, Barry

doi:10.1007/bf01999101

Cited by 87 publications

(33 citation statements)

References 7 publications

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“…5(b). In order to simulate machining and to assess our algorithm, we developed numerical tools such as the N-buffer simulation proposed in [7]. Each tool path, described as a cubic B-spline, is sampled so that the chordal deviation does not influence the scallop height [8].…”

Section: Applicationsmentioning

confidence: 99%

5-axis Iso-scallop Tool Paths along Parallel Planes

Tournier¹,

Lartigue²

2008

Computer-Aided Design and Applications

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To cite this version:Christophe Tournier, Claire Lartigue. 5-axis iso-scallop tool paths along parallel planes. ABSTRACTThis paper presents a new method of computing constant scallop height tool paths in 5-axis milling. Indeed, usual iso-scallop tool path computation methods in 3-axis or 5-axis milling generate tool path self-intersections, which prevent from reaching the required quality and productivity. The proposed approach consists in following parallel planes in 5-axis milling to avoid self-intersection of the tool path. The constant scallop height is guaranteed by modifying the machined strip width by means of the orientation angles of tool axis (yaw and tilt angles). Resulting scallop height and surface roughness are simulated using the N-Buffer method.

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Section: Applicationsmentioning

confidence: 99%

5-axis Iso-scallop Tool Paths along Parallel Planes

Tournier¹,

Lartigue²

2008

Computer-Aided Design and Applications

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“…The cost of the simulation for the first approach (when using Constructive Solid Geometry) is reported to be O(n 4 ) (n being the number of tool movements) by O(n) for the approximation approach [38]. Since a complex NC program might consist of ten thousand movements, the first approach is computationally unapproachable and only approximate techniques are applied [32,36,37,38,72]. …”

Section: Nc Millingmentioning

confidence: 99%

Computational Methods for Geometric Processing. Applications to Industry

Iglesias

Gálvez

Puig-Pey

2001

Computational Science — ICCS 2001

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“…The discrete vector intersection approach assesses milling error by computing distances between a set of pre-selected points on design surfaces and tool swept surfaces [4,10,17]. Each design surface point has an associated vector, typically the outward normal, as shown in Figure 1.…”

Section: Discrete Vector Intersection Approachmentioning

confidence: 99%

NC milling error assessment and tool path correction

Huang

Oliver

1994

Proceedings of the 21st Annual Conference on Computer Graphics and Interactive Techniques - SIGGRAPH '94

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A system of algorithms is presented for material removal simulation, dimensional error assessment and automated correction of Þve-axis numerically controlled (NC) milling tool paths. The methods are based on a spatial partitioning technique which incorporates incremental proximity calculations between milled and design surfaces. Hence, in addition to real-time animated Þve-axis milling simulation, milling errors are measured and displayed simultaneously. Using intermediate error assessment results, a reduction of intersection volume algorithm is developed to eliminate gouges on the workpiece via tool path correction. Finally, the view dependency typical of previous spatial partitioning-based NC simulation methods is overcome by a contour display technique which generates parallel planar contours to represent the workpiece, thus enabling dynamic viewing transformations without reconstruction of the entire data structure. Keywords Iowa Center for Emerging Manufacturing Technology, Virtual Reality Applications Center Disciplines Computer-Aided Engineering and Design | Graphics and Human Computer Interfaces CommentsThis is a manuscript of a conference proceeding from Proceedings SIGGRAPH '94 (1994SIGGRAPH '94 ( ): 287, doi:10.1145. Posted with permission. RightsPermission to make digital or hard copies of part or all of this work or personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise, to republish, to post on servers, or to redistribute to lists, requires prior specific permission and/or a fee.

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Approximate methods for simulation and verification of numerically controlled machining programs

Cited by 87 publications

References 7 publications

5-axis Iso-scallop Tool Paths along Parallel Planes

5-axis Iso-scallop Tool Paths along Parallel Planes

Computational Methods for Geometric Processing. Applications to Industry

NC milling error assessment and tool path correction

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