Assembly planning in a virtual environment

Dewar, Rick; Carpenter, I D; Ritchie, James Millar; Simmons, John E.

doi:10.1109/picmet.1997.653557

Cited by 50 publications

(25 citation statements)

References 3 publications

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“…The review in the previous section indicated that initial efforts in simulating assembly used pre-defined transformation matrices of parts for positioning in the virtual scene. In such systems, as users moved parts in the environment they were snapped in place based on collision or proximity criteria [122] (Figure 9). Most of the early applications did not implement collision detection among objects which allowed them to interpenetrate during the simulation.…”

Section: Discussionmentioning

confidence: 99%

“…Leaving the human aspect out of the assembly planning could result in incorrect or inefficient operations. Another limitation of the computer aided assembly planning methods is that as the number of parts in the assembly increase, the possible assembly sequences increase exponentially and thus it becomes more difficult to characterize criteria for choosing the most suitable assembly sequence for a given product [17].…”

Section: Why Virtual Assembly?mentioning

confidence: 99%

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Virtual reality for assembly methods prototyping: a review

2010

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Assembly planning and evaluation is an important component of the product design process in which details about how parts of a new product will be put together are formalized. A well designed assembly process should take into account various factors such as optimum assembly time and sequence, tooling and fixture requirements, ergonomics, operator safety, and accessibility, among others. Existing computer-based tools to support virtual assembly either concentrate solely on representation of the geometry of parts and fixtures and evaluation of clearances and tolerances or use simulated human mannequins to approximate human interaction in the assembly process. Virtual reality technology has the potential to support integration of natural human motions into the computer aided assembly planning environment (Ritchie et al. in Proc I MECH E Part B J Eng 213(5): [461][462][463][464][465][466][467][468][469][470][471][472][473][474] 1999). This would allow evaluations of an assembler's ability to manipulate and assemble parts and result in reduced time and cost for product design. This paper provides a review of the research in virtual assembly and categorizes the different approaches. Finally, critical requirements and directions for future research are presented. Disciplines Computer-Aided Engineering and Design | Graphics and Human Computer InterfacesComments This is a manuscript of an article from Virtual Reality 15 (2011) AbstractAssembly planning and evaluation is an important component of the product design process in which details about how parts of a new product will be put together are formalized. A well designed assembly process should take into account various factors such as optimum assembly time and sequence, tooling and fixture requirements, ergonomics, operator safety, and accessibility, among others.Existing computer-based tools to support virtual assembly either concentrate solely on representation of the geometry of parts and fixtures and evaluation of clearances and tolerances or use simulated human mannequins to approximate human interaction in the assembly process.Virtual reality (VR) technology has the potential to support integration of natural human motions into the computer aided assembly planning environment (CAAP) [1]. This would allow evaluations of an assembler's ability to manipulate and assemble parts and result in reduced time and cost for product design. This paper provides a review of the research in virtual assembly and categorizes the different approaches Finally, critical requirements and directions for future research are presented.

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Section: Discussionmentioning

confidence: 99%

Section: Why Virtual Assembly?mentioning

confidence: 99%

Virtual reality for assembly methods prototyping: a review

2010

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“…The immersive VR assembly research system developed for this research (Dewar 1998) was based on a hardware platform comprising a Hewlett-Packard 725/75 workstation incorporating the HP-UX 10.01 operating system with a graphics accelerator for driving a head mounted display (HMD) and a 3D mouse. User HMD and 3D mouse tracking was carried out via a Polhemus tracker.…”

Section: Virtual Assembly Planningmentioning

confidence: 99%

“…The immersive VR systems offered an intuitive, unrestrained, real-time means of interaction which helped highlight clashes and inconsistencies in assemblies which cannot be easily be seen with a conventional, flat-screen CAD interface. The structure of the UVAVU (Unbelievable Vehicle for Assembling Virtual Units) assembly system is shown in figure 1 and utilized both proximity and collision snapping (Dewar et al 1997a, Dewar et al 1997b due to the lack of haptic feedback and more elaborate visual cues. Figure 1 The UVAVU assembly system.…”

Section: Virtual Assembly Planningmentioning

confidence: 99%

The role of non-intrusive operator logging to support the analysis and generation of product engineering data using immersive VR

Ritchie

Dewar

Robinson

et al. 2006

Virtual and Physical Prototyping

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Abstract:Virtual reality (VR) has the potential to substantially alter the manner in which products of the future are engineered. Currently there are many applications of VR during the product engineering process from design and analysis through to process planning, assembly, machining and shop floor layout. VR takes a multitude of forms, including immersive, desktop, augmented, and is rapidly developing as a tool that can be used in the engineering of products.This paper looks at the use of immersive VR as a tool for analyzing both design and manufacturing product engineering activities in a series of research projects involving assembly planning and cable harness design. It focuses particularly on the use of the non-intrusive logging of users in such environments as a means to obtaining a rich data source for activity analysis and its potential within computer integrated manufacturing environments as a means of providing downstream engineering data.

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“…Dewar et al [7] indicated that in the process of product assembly, since it always involved such problems as product design and assembly, it had to rely on professional knowledge and the actual assembly by experienced experts so as to formulate standard assembly procedures. Therefore, in order to decrease effectively the time spent on the assembly procedures of product, VR technology is up to now a technology most frequently applied.…”

Section: Introductionmentioning

confidence: 99%