Results 261 to 270 of about 1,008,908 (306)

An adaptive tool path generation algorithm for precision surface machining

Computer-Aided Design, 1998
Abstract In this paper an adaptive CNC tool path generation algorithm for precision machining of parts with free-form surfaces is proposed. It is aimed at developing a generic CNC tool path generation methodology suitable for machining parts having analytical curves/surfaces and/or sculptured (parametric) surfaces, as opposed to most ...
Lin, Y.-J., Lee, T. S.
openaire   +2 more sources

Tool-path generation for clean-up machining

1998
The purpose of clean-up machining is to remove uncut volumes, which are left at concave regions after finish-machining, by employing small-size cutters. The clean-up UMOs to be discussed in this chapter are the fillet-cut [BEM] and pencil-cut [BEM], where BEM denotes ball-endmill cutter.
Byoung K. Choi, Robert B. Jerard
openaire   +1 more source

Efficient Tool Path Generation for √3 Subdivision Surface

2006 International Conference on Mechatronics and Automation, 2006
An approach of three-axis NC cutter path generation for √3 subdivision surface is proposed. A computing formula for error estimating √3 subdivision surface is derived. Using the formula, one can predict how many steps of subdivision are necessary to meet a user-specified tolerance without subdivision the meshes actually. Tool path planning is generated
Jianhuang Wu, Weijun Liu, Hongyou Bian
openaire   +1 more source

Adaptive tool path generation from measured data

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2004
Conventional algorithms for tool path generation from measured points did not use the region-by-region idea to generate adaptive tool paths since it is difficult to obtain geometric information of scattered points directly, which is necessary for adaptive tool path generation. This paper presents a new strategy for determining geometric information of
openaire   +1 more source

Incomplete 2-manifold Mesh Based Tool Path Generation

Transactions of the Korean Society of Mechanical Engineers A, 2005
This paper presents a new paradigm for three-axis tool path generation based on an incomplete two-manifold mesh model; namely, an inexact polyhedron. When geometric data is transferred from one system to another system and tessellated for tool path generation, the model does not have any topological data between meshes and facets.
Sung-gun Lee, Su-jin Kim, Min-yang Yang, Dong-yoon Lee   +3 more
openaire   +1 more source

Fundamentals of tool-path generation and validation

1998
The purpose of this chapter is to provide an overview of tool-path generation and validation for sculptured surface machining (SSM). Major topics to be discussed in this chapter include: (1) issues in planning tool-path topology and selecting milling-strategy options, (2) tool-path resolution planning, (3) CL-data computation, (4) cutter-interference ...
Byoung K. Choi, Robert B. Jerard
openaire   +1 more source

Constant engagement tool path generation for convex geometries

Journal of Manufacturing Systems, 2000
Contour-parallel and direction-parallel machining strategies have gained nearly universal acceptance for simple 212D material removal tasks. When the mechanics of the milling process are considered, widely varying cutter engagements and sharp velocity discontinuities are found to significantly limit the efficiency of these approaches.
J.A Stori, P.K Wright
openaire   +1 more source

Tool Path Generation for Flexible Blade Cutting

2000
Free Form Thick Layered Object Manufacturing FF-TLOM is based on application of a reshapeable cutting device, which allows a free form shaping of thick polystyrene foam layers. Once manufactured, these layers are stacked to produce a physical model. Tool path generation for the heated flexible blade tool is a challenging task, since it influences the ...
Broek, Han J., Horváth, Imre, Smit, Bram De   +2 more
openaire   +1 more source

Tool Path Generation Based on B-Spline Wavelets

Volume 2B: 27th Design Automation Conference, 2001
Abstract Tool path generation is a fundamental problem in numerical control machining. Typical methods used for machining 2.5D objects include generation of offset contours using trimmed offset curves and zigzag sequences. The offset contours result in unnecessary detailed curves far away from the object boundary.
Ranga Narayanaswami, Junhua Pang
openaire   +1 more source

Tool-path generation of planar NURBS curves

Robotics and Computer-Integrated Manufacturing, 2010
It has been widely used in CAD field for many years and gradually applied in CAM area with the prevalence of NURBS interpolator equipped in CNC controllers. But few of them provide the tool radius compensation function. In order to achieve the goal of generating tool-path, an algorithm was presented to offset NURBS curves by an optimum process for CAD ...
openaire   +1 more source