Journal ArticleDOI
Optimized bending sequences of sheet metal bending by robot
Shigeru Aomura,Atsushi Koguchi +1 more
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In this paper, a method is proposed which generates bending sequences of a sheet metal part handled by a robot, and the best grasping positions for each bending and the number of repositions must be indicated in advance.Abstract:
In the present study, a method is proposed which generates bending sequences of a sheet metal part handled by a robot. If parts are handled by a robot, the best grasping positions for each bending and the number of repositions must be indicated in advance. Using the proposed method, feasible bending sequences with grasping positions are obtained and the sequences are sorted in the order of the number of repositions. In generating the sequences, several important features for the sheet metal bending are considered by dividing them into channels, which is one of the base features. The error accumulated during bending operation is calculated for each sequence, and set-up positions can be selected so as to satisfy the preferential tolerance. The proposed method assists the sheet metal process planner by allowing him/her to plan in advance the best bending sequences and to confirm if the robot can perform the handling operation. A computer simulation was written based on the proposed method, and illustrative examples and results of various simulation models are also given.read more
Citations
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Journal ArticleDOI
Survey on model-based manipulation planning of deformable objects
TL;DR: A systematic overview on the subject of model-based manipulation planning of deformable objects is presented, emphasizing the different types of deformation.
Journal ArticleDOI
Computer aided process planning for sheet metal bending: A state of the art
TL;DR: The state of the art review is completed with an overview of ergonomic analysis methods for process plan evaluation, including bend sequencing, collision detection, tolerance verification and tool selection.
Journal ArticleDOI
Evolutionary path planning for robot assisted part handling in sheet metal bending
Xiaoyun Liao,Gongming Wang +1 more
TL;DR: An evolutionary path-planning approach for robot-assisted handling of sheet metal parts in bending is firstly proposed and implemented in this paper, where collision detection algorithms based on segment intersection are used to check if the generated paths are feasible or infeasible.
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KBE-based stamping process paths generated for automobile panels
TL;DR: In this article, an intelligent CAPP system has been developed based on feature technology and an object-oriented method, where the whole product knowledge has been represented by frames which directly map to objects (or features) in the objectoriented sense.
Journal ArticleDOI
Development of a new method to determine bending sequence in progressive dies
Mohammad Farsi,Behrooz Arezoo +1 more
TL;DR: In this article, a new method for determining the sequence of the bending operations is described, which is done in two stages, and the bending operation groups are then determined using fuzzy set theory.
References
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Journal ArticleDOI
Design and Manufacturing of Sheet Metal Parts: Using Features to Aid Process Planning and Resolve Manufacturability Problems
Cheng Hua Wang,David Alan Bourne +1 more
TL;DR: In this article, an integrated system for the design and production of sheet-metal parts is described, where important features are automatically generated as the design progresses, and these features are used to produce parts on an automatic bending system.
Journal ArticleDOI
The generation of bending sequences in a CAPP system for sheet-metal components
TL;DR: In this paper, the authors discuss the functions that have to be performed during the determination of bending sequences, focusing on accuracy aspects, in an integrated CAPP system such as PART-S, which is under development presently in the author's laboratory.
Journal ArticleDOI
Computer-aided generation of bending sequences for die-bending machines
TL;DR: A computerized process-planning tool for sheet-metal parts, a bending-sequence generator has been developed that can be developed into the plane part automatically, technological data and know-how about the bending process and the press brake being included in this tool.
Proceedings ArticleDOI
Trajectory control of flexible plate using neural network
TL;DR: Modeling and control problems for a three-joint robot handling a flexible plate in the vertical plane under gravity are treated, and four three-layer neural networks are used to reduce the joint-angle feedback errors and bending vibration.
Journal ArticleDOI
Tolerancing and Sheet Bending in Small Batch Part Manufacturing
TL;DR: In this paper, the interpretation and conversion of tolerances as part of a sequencing procedure for bending to be used in an integrated CAPP system is discussed, where the part shapes change not only locally but globally as well.