Interactive simulation of CAD models assemblies using virtual constraint guidance

Tching, Loïc; Dumont, Georges; Perret, Jérôme

doi:10.1007/s12008-010-0091-7

Cited by 46 publications

(38 citation statements)

References 13 publications

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“…When the parts are no longer in contact, the constraint is removed and the user is returned to operating within a phase one algorithm (free movement). Figure 4: Assemble of a pin-in-a-hole using automatic geometric constraints [26] Virtual constraint guidance (VCG) Tching et al [21,28] proposed to divide the human interaction during an assembly task in two parts: an exploration phase and an assembly phase. Within the exploration phase, non-smooth dynamics provides the underlying physics engine for computation of collisions and 6-DOF force rendering.…”

Section: Automatic Geometric Constraints (Agc)mentioning

confidence: 99%

“…Figure 5 shows the virtual constraint guides (planes) associated with a peg-in-a-hole insertion task as well as the simple cylindrical joint which guides the insertion. Figure 5: Peg-in-a-hole insertion task using VCG [28] The transition between the exploration phase and the assembly phase is triggered by collision of the virtual constraint guides of the moving object with the virtual constraint guides of the fixed object. In the case of the insertion task, the axis of the pin collides with the intersection of the virtual constraint planes aligned with the hole.…”

Section: A) B)mentioning

confidence: 99%

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A Conceptual Framework to Support Natural Interaction for Virtual Assembly Tasks

Vance

Dumont

2011

ASME 2011 World Conference on Innovative Virtual Reality

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Over the years, various approaches have been investigated to support natural human interaction with CAD models in an immersive virtual environment. The motivation for this avenue of research stems from the desire to provide a method where users can manipulate and assemble digital product models as if they were manipulating actual models. The ultimate goal is to produce an immersive environment where design and manufacturing decisions which involve human interaction can be made using only digital CAD models, thus avoiding the need to create costly preproduction physical prototypes. This paper presents a framework to approach the development of virtual assembly applications. The framework is based on a Two Phase model where the assembly task is divided into a free movement phase and a fine positioning phase. Each phase can be implemented using independent techniques; however, the algorithms needed to interface between the two techniques are critical to the success of the method. The paper presents a summary of three virtual assembly techniques and places them within the framework of the Two Phase model. Finally, the conclusions call for the continued development of a testbed to compare virtual assembly methods. Keywords Virtual assembly Disciplines Mechanical Engineering

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Section: Automatic Geometric Constraints (Agc)mentioning

confidence: 99%

Section: A) B)mentioning

confidence: 99%

A Conceptual Framework to Support Natural Interaction for Virtual Assembly Tasks

Vance

Dumont

2011

ASME 2011 World Conference on Innovative Virtual Reality

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“…Loic et al [14] developed a method that uses non-smooth contact dynamics to manipulate objects in the environment and render haptic forces. This method uses "guide planes" as visual cues and requires manual pre-processing.…”

Section: Geometricmentioning

confidence: 99%

BREP Identification During Voxel-Based Collision Detection for Haptic Manual Assembly

Faas

Vance

2011

ASME 2011 World Conference on Innovative Virtual Reality

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This paper presents a novel method to tie geometric boundary representation (BREP) to voxel-based collision detection for use in haptic manual assembly simulation. Virtual Reality, in particular haptics, has been applied with promising results to improve preliminary product design, assembly prototyping and maintenance operations. However, current methodologies do not provide support for low clearance assembly tasks, reducing the applicability of haptics to a small subset of potential situations. This paper discusses a new approach, which combines highly accurate CAD geometry (boundary representation) with voxel models to support a hybrid method involving both geometric constraint enforcement and voxel-based collision detection to provide stable haptic force feedback. With the methods presented here, BREP data can be accessed during voxel-based collision detection. This information can be used for constraint recognition and lead to constraint-guidance during the assembly process. ABSTRACTThis paper presents a novel method to tie geometric boundary representation (BREP) to voxel-based collision detection for use in haptic manual assembly simulation. Virtual Reality, in particular haptics, has been applied with promising results to improve preliminary product design, assembly prototyping and maintenance operations. However, current methodologies do not provide support for low clearance assembly tasks, reducing the applicability of haptics to a small subset of potential situations. This paper discusses a new approach, which combines highly accurate CAD geometry (boundary representation) with voxel models to support a hybrid method involving both geometric constraint enforcement and voxel-based collision detection to provide stable haptic force feedback. With the methods presented here, BREP data can be accessed during voxel-based collision detection. This information can be used for constraint recognition and lead to constraint-guidance during the assembly process.

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“…Loic et al developed a method that uses non-smooth contact dynamics to manipulate objects in the environment and render haptic forces [37]. Geometric constraints were used for low clearance assembly.…”

Section: Combined Physics-and Constrained-based Applicationsmentioning

confidence: 99%

A Hybrid Method for Haptic Feedback to Support Manual Virtual Product Assembly

Faas

2011

Volume 2: 31st Computers and Information in Engineering Conference, Parts a and B

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Experience with current Virtual Reality (VR) systems that simulate low clearance assembly operations with haptic feedback indicate that such systems are highly desirable tools in the evaluation of preliminary designs, as well as virtual training and maintenance processes. The purpose of this research is to develop methods to support manual low clearance assembly using haptic (force) feedback in a virtual environment. The results of this research will be used in an engineering framework for assembly simulation, training, and maintenance. The proposed method combines voxel-based collision detection and boundary representation to support both force feedback and constraint recognition. The key to this approach is developing the data structure and logic needed to seamlessly move between the two representations while supporting smooth haptic feedback. Collision forces and constraint-guided forces are blended to provide support for low clearance haptic assembly. This paper describes the development of the method.

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Interactive simulation of CAD models assemblies using virtual constraint guidance

Cited by 46 publications

References 13 publications

A Conceptual Framework to Support Natural Interaction for Virtual Assembly Tasks

A Conceptual Framework to Support Natural Interaction for Virtual Assembly Tasks

BREP Identification During Voxel-Based Collision Detection for Haptic Manual Assembly

A Hybrid Method for Haptic Feedback to Support Manual Virtual Product Assembly

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