Generation of collision-free 5-axis tool paths using a haptic surface

Balasubramaniam, Mahadevan; Ho, Stephen; Sarma, Sanjay E.; Adachi, Yoshitaka

doi:10.1016/s0010-4485(01)00057-4

Cited by 48 publications

(21 citation statements)

References 26 publications

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“…Morishige et al (1997) avoided collision by producing the direction of collision avoidance, based on the 2D configuration space (C-space) defined by two parameters which determine the tool attitude. Balasubramaniam et al (2002; generated and verified globally collision-free five-axis finishing toolpaths while also considering machine limits, tool tilt, cusp height limits, tool pitch limits, and the need to keep tool paths continuous by discretizing the part and using a haptic surface. Tournier and Duc (2002) developed a constant scallop height planning strategy to avoid tightening of the tool paths.…”

Section: Introductionmentioning

confidence: 99%

Collisionless tool orientation smoothing above blade stream surface using NURBS envelope

Zhang

2013

J. Zhejiang Univ. Sci. A

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Abstract:In five-axis machining, tool orientation above a blade stream surface may lead to tool collision and a decrease in workpiece rigidity. Hence, collisionless tool orientation smoothing (TOS) becomes an important issue. On the basis of a constant scallop height tool path, the triangular facets in the faces, vertices format are constructed from cutter contact (CC) using the Voronoi incremental algorithm. The cutter location (CL) points candidate set is represented by an oblique elliptic cone whose vertex lies at CC using NURBS envelope. Whether the CL point is above its CC is judged by the dot product between the normal vector and the point on triangulation nearest to the CL point. The curvatures at CC are obtained by fitting a moving least square (MLS) quadratic patch to the local neighborhood of a vertex and calculating eigenvectors and eigenvalues of the Hessian matrix. Triangular surface elastic energy is employed as the weight in selection from the NURBS envelope. The collision is judged by NURBS surface intersection. TOS can then be expressed by selecting a CL point for each CC point and converted into a numerical control (NC) code automatically according to the postprocessor type of the machine center. The proposed method is verified by finishing of a cryogenic turboexpander impeller of air separation equipment.

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Section: Introductionmentioning

confidence: 99%

Collisionless tool orientation smoothing above blade stream surface using NURBS envelope

Zhang

2013

J. Zhejiang Univ. Sci. A

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“…Traditional methods in automatic 5-axis tool path generation require huge computing time for calculating the tool orientation to avoid gouging and global interferences. Recently, haptic systems began to attract people's interests in varied aspects [11], [18][19], [22][23]. However, only very few of them (e.g., [11,18]) apply the haptic system to 5-axis tool path generation.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, haptic systems began to attract people's interests in varied aspects [11], [18][19], [22][23]. However, only very few of them (e.g., [11,18]) apply the haptic system to 5-axis tool path generation. The MIT-Suzuki haptic system [11] brought us an intuitive man-machine interface for generating collision-free 5-axis tool path.…”

Section: Introductionmentioning

confidence: 99%

“…However, only very few of them (e.g., [11,18]) apply the haptic system to 5-axis tool path generation. The MIT-Suzuki haptic system [11] brought us an intuitive man-machine interface for generating collision-free 5-axis tool path. However it is a specialized haptic system and the captured posture data is unreliable during the interacting procedure.…”

Section: Introductionmentioning

confidence: 99%

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Reliable Haptic System for Collision-free 5-axis Tool Path Generation

Chen¹,

Tang²

2006

Computer-Aided Design and Applications

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This paper presents a collision-free 5-axis tool path generation system that uses a haptic device to perform reliable man-machine interactions. The system is based on commercial haptic devices which can provide 3 degrees of freedom (DOF) force feedback and 6 DOF posture sensing. The system achieves three main functions: (1) a rendering conversion that uses 3 DOF force feedback haptic representation instead of the 5 DOF real world requirements; (2) an efficient force feedback design that helps get accurate results directly from the user's manipulation; and (3) a reduction of user's operation workload by providing heuristic leading forces. The system faithfully represents the real milling machining procedure both graphically and haptically. No matter an expert or not, the user is able to use the presented interactive system to conveniently plan and design collision-free 5-axis tool paths.

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“…The sweep-envelope differential equation method is probably the most elegant method to date that has proven to be suitable for NC verification [7,8]. Some of the works that have addressed NC verification but have not used swept volume methods include Voelker and Hunt [9], Menon and Voelcker [10], Oliver and Goodman [11], Narvekar et al [12], Takata et al [13], Jerard and Drysdale [14,15], Koren and Lin [16], Menon and Robinson [17], Oliver [18], Liang et al [19], Liu et al [20], Lee [21], Lo [22], Chiou et al [23,24], Elber and Cohen [25], Balasubramaniam et al [26,27], Rao and Sarma [28], Jensen et al [29], Bohez [30], Mann and Bedi [31], Yoon et al [32], Bedi et al [33], Gray et al [34,35], Fussell et al [36], Lauwers et al [37], Jun et al [38], Bohez et al [39], and Langeron et al [40].…”

Section: Introductionmentioning

confidence: 99%

Verification of NC machining processes using swept volumes

Yang

Abdel‐Malek

2005

Int J Adv Manuf Technol

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A numerically controlled (NC) machining verification method is developed based on a formulation for delineating the volume generated by the motion of a cutting tool on the workpiece (stock). The motion of a cutting tool is modeled as a surface undergoing a sweep operation along another geometric entity where machine tool trajectory includes translational and rotational movements. A rank-deficiency condition is imposed on the Jacobian of the sweep to determine the singular surfaces. Singular entities are then intersected to determine sub-entities that may exist on the boundary of the volume. A perturbation method is used to identify the boundary envelope of the material volume to be removed. Numerical examples illustrating the formulation are presented. Benefits of this method are its ability to depict and visualize the manifold and to compute a value for the volume.

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Generation of collision-free 5-axis tool paths using a haptic surface

Cited by 48 publications

References 26 publications

Collisionless tool orientation smoothing above blade stream surface using NURBS envelope

Collisionless tool orientation smoothing above blade stream surface using NURBS envelope

Reliable Haptic System for Collision-free 5-axis Tool Path Generation

Verification of NC machining processes using swept volumes

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