Decision criteria for computer-aided parting surface design

Ravi, Renjith V.; Srinivasan, Mukundhan

doi:10.1016/0010-4485(90)90024-7

Cited by 99 publications

(35 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other factors, such as the complexity of the parting surface, also play an important role [1,27]. Generally UFPDs are the preferred parting directions.…”

Section: Discussionmentioning

confidence: 99%

Finding All Undercut-Free Parting Directions for Solids of Revolution

Chen

McMains

2007

Volume 6: 33rd Design Automation Conference, Parts a and B

View full text Add to dashboard Cite

show abstract

“…Other factors, such as the complexity of the parting surface, also play an important role [1,27]. Generally UFPDs are the preferred parting directions.…”

Section: Discussionmentioning

confidence: 99%

Finding All Undercut-Free Parting Directions for Solids of Revolution

Chen

McMains

2007

Volume 6: 33rd Design Automation Conference, Parts a and B

View full text Add to dashboard Cite

show abstract

“…In mold design, each movable mold piece associates a parting direction from which the mold should be opened without interaction with other pieces and the object in the mold itself. Therefore, the parting direction for a mold piece has to be one of the visible directions of the corresponding surface region formed by a particular mold piece [Ravi and Srinivasan 1990;Priyadarshi and Gupta 2004]. Woo [1994] first developed the concept of the spherical visibility map and linked the visibility problem to various manufacturing processes.…”

Section: A Set Of Triangular Facets For Each Facet Find the Set Of mentioning

confidence: 99%

Computing an exact spherical visibility map for meshed polyhedra

Liu

Ramani

2007

Proceedings of the 2007 ACM Symposium on Solid and Physical Modeling

View full text Add to dashboard Cite

This paper considers computation of the exact visibility range (or the spherical visibility map) for a closed polyhedron whose boundary is represented as a triangle mesh. For each facet on the mesh, we calculate the set of view directions from which all the points on the facet can be seen from the exterior. The projection of those visible directions onto the unit sphere forms the visibility map for the facet. We show that the exact visibility map is a spherical arrangement of closed 0-cells, 1-cells, and 2-cells embedded on the surface of the unit sphere. Based on a provable method for calculating the potential occlusion regions of a facet, a vector visibility algorithm is developed for computing the exact solution of the spherical visibility map for a facet. Examples are given to illustrate our algorithm.

show abstract

“…The application of these approaches is limited to two-piece mold design for parts with relatively simple geometry Ravi and Srinivasan [15] presented sectioning and silhouette methods for parting line generation. Wong et al [17] presented a slicing strategy for generating the parting line.…”

Section: Two-piece Mold Designmentioning

confidence: 99%

“…Hence it is proposed that the flattest possible parting line be found [15]. This is possible if a better parting line can be found by leaving out facets that can be formed by other mold-pieces.…”

Section: Locating Parting Line Of a Mold-piece Regionmentioning

confidence: 99%

Geometric algorithms for automated design of multi-piece permanent molds

Priyadarshi

Gupta

2004

Computer-Aided Design

View full text Add to dashboard Cite

Multi-Piece molds, which consist of more than two mold pieces, are capable of producing very complex parts⎯parts that cannot be produced by the traditional molds. The tooling cost is also low for multi-piece molds, which makes it a candidate for pre-production prototyping and bridge tooling. However, designing multi-piece molds is a time-consuming task. This paper describes geometric algorithms for automated design of multi-piece molds. A multi-piece mold design algorithm has been developed to automate several important mold-design steps: finding parting directions, locating parting lines, creating parting surfaces, and constructing mold pieces. This algorithm constructs mold pieces based on global accessibility analysis results of the part and therefore guarantees the disassembly of the mold pieces. A software system has been developed, which has been successfully tested on several complex industrial parts.

show abstract

Decision criteria for computer-aided parting surface design

Cited by 99 publications

References 2 publications

Finding All Undercut-Free Parting Directions for Solids of Revolution

Finding All Undercut-Free Parting Directions for Solids of Revolution

Computing an exact spherical visibility map for meshed polyhedra

Geometric algorithms for automated design of multi-piece permanent molds

Contact Info

Product

Resources

About