A novel comparative design procedure for reconfigurable assembly fixtures

Erdem, Ilker; Levandowski, Christoffer E; Berlin, Cecilia; Kihlman, Henrik; Stahre, Johan

doi:10.1016/j.cirpj.2017.06.004

Cited by 11 publications

(2 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Brettel, Klein and Friederichsen (2016) stated that the fast reconfiguration of systems and processes allowed maintaining excellent product performance at low costs. Erdem et al (2017) highlighted that the efficiency of a flexible fixture is a multi-dimensional task. However, their overall cost depends on investment and setup costs, which have a negative effect on efficiency while increasing.…”

Section: Literature Reviewmentioning

confidence: 99%

Ensuring economic efficiency of flexible fixtures in multiproduct manufacturing

Ivanov

Liaposhchenko

Denysenko

et al. 2021

Engineering Management in Production and Services

View full text Add to dashboard Cite

The first-priority directions for modern engineering, especially for multiproduct manufacturing, include the intensification of manufacturing processes, increasing the efficiency of technological equipment, and reducing the time required to implement technological solutions. Fixture design is a complicated and time-consuming process that requires considering many parameters of the closed-loop technological system “machine tool — fixture — cutting tool — workpiece”. One machined part can have several fixture layouts corresponding to all specified parameters; however, their effectiveness differs depending on production conditions. Search for an optimal fixture for specified production conditions is an essential stage of production planning. It has been proved that the efficiency of a manufacturing process should be assessed using single economic indicator — the cost of machining, which considers the costs of time, the total costs for process realisation, and a batch of parts. The paper aims to substantiate the efficiency of manufacturing processes in machining complex parts using flexible fixtures by developing a mathematical model that considers the cost of time, the cost of implementing the manufacturing process, and the batch value of parts production. This approach estimates the efficiency of manufacturing processes for machining complex parts and choosing the flexible fixture layout that corresponds to specific production conditions. It was proved that flexible fixtures could be effectively used for machining small batches of parts with frequent readjustments to new workpieces and short-term machining. A tendency has been established that the higher number of nomenclature of parts contributes to expanding the scope of the effective use of flexible fixtures.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Ensuring economic efficiency of flexible fixtures in multiproduct manufacturing

Ivanov

Liaposhchenko

Denysenko

et al. 2021

Engineering Management in Production and Services

View full text Add to dashboard Cite

show abstract

“…The toolings are developing towards reconfiguration and * Author to whom any correspondence should be addressed. modularization to adapt the rapid iteration or different kinds of aviation products [2,3]. Overhanging structures such as beam and plate are widely used in the reconfigurable toolings to provide openness and flexibility but have less rigidity under the mechanical and thermal loads than traditional rigid fixtures.…”

Section: Introductionmentioning

confidence: 99%

Structural deformation and clamping force monitoring of reconfigurable tooling motivated by strain data in aircraft assembly

Li,

Hu,

Kang

et al. 2024

Smart Mater. Struct.

View full text Add to dashboard Cite

The quality of aircraft assembly is mainly guaranteed by toolings which are vital to the geometrical accuracy and service performance of aviation products. In this research, a real-time monitoring system that determines the structural deformation and clamping force of reconfigurable toolings using strain data is developed to perceive the service state of the toolings. By laying fiber Bragg gratings on positioning beam and baseplate of the reconfigurable tooling, strain data of the tooling structures are gauged and transferred to curvatures. The beam and baseplate are modeled as one and two-dimensional objects respectively and shape reconstruction algorithms are established to obtain their deflection curve and surface using curvature information. Distribution of fibers is optimized to minimize the conversion error from strain to curvature. An estimation that reveals the mathematical relationship between the shape reconstruction error and measurement interval is implemented, and a mapping model from strains to clamping force of the beam is established. These algorithms are integrated into the self-developed monitoring software and undergo simulating and experimental tests. The maximum relative errors of deformation and force are 4.53% and 4.12% respectively in simulation, and 9.21% and 7.29% individually in experiment, which validates the efficiencies of the method. Tests of the monitoring system suggest that it can provide a timely and accurate sensing of the deformation and force of the tooling.

show abstract