Integration of high power lasers in bending tools

Bammer, F.; Holzinger, B.; Humenberger, G.; Schuöcker, D.; Schumi, T.

doi:10.1016/j.phpro.2010.08.045

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…[5] investigates the local heating by heating two metallic resistances and then applying a contact force between the resistances and the blank.. [6] uses inductive heating to heat the material. A reduction of springback can be seen while heating the sheet under 750 K, but a higher springback was observed when using a temperature over 750 K. Another method to realize a local heating is the usage of a laser [7]. Beside the reduction of springback, the heating of the sheet could also lead to a reduction of the bending forces [8].…”

Section: Methods Of Springback Compensation In Sheet Metal Bendingmentioning

confidence: 99%

Analysis of the Potential of Incremental Stress Superposition on Air Bending

Weinrich

Becker

Maevus

et al. 2014

KEM

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Springback and limited forming limits of modern high strength steels are a big challenge in manufacturing engineering. Both aspects are crucial in sheet metal bending processes. Different modifications of the air bending process have already been developed in order to reduce springback and also to increase the forming limits of materials. A new method (the incremental stress superposition on air bending) has been developed. Studies of this new process alternative show a positive effect on the springback behavior. In order to investigate the potential of this process a comparison with other already established bending processes have been carried out. A possible process control to extend the forming limits has also been investigated.

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Section: Methods Of Springback Compensation In Sheet Metal Bendingmentioning

confidence: 99%

Analysis of the Potential of Incremental Stress Superposition on Air Bending

Weinrich

Becker

Maevus

et al. 2014

KEM

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Simulation of forming processes with local heating of dual phase steels with use of laser beam shaping systems

Bielak¹,

Bammer²,

Otto³

et al. 2016

Computer Optics

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Features of laser-assisted warm forming of dual phase steel DP1000 are determined. Simulation of forming processes with local heating is performed. In the simulation procedure, the forming parameters of three dimensional forming were adapted to keep them within tolerable limits even in critical areas as well as identifying the localization and type of critical stresses. The capabilities of Abaqus were extended by use of the Python language to independently evaluate selected element strains, the position of deformed elements within the forming limit diagram and user-defined failure criteria. The simulation led to an adapted forming process permitting a significantly increased bulge forming depth by local laser heating of the forming zones. The developed simulation model shows a satisfactory conformity with experiments, performed using a fibre-coupled laser with a wavelength of 1070 nm and a maximum output power of 1500 W, and a servo bending press TRUMPF TruBend 7018. The required distribution of the laser beam energy can be obtained by using diffractive optical elements. The use of the model for technological operations opens up possibilities not only for the solution of the presented specific objective of laser assisted warm forming, but also for others applications.

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Integration of high power lasers in bending tools

Cited by 2 publications

References 2 publications

Analysis of the Potential of Incremental Stress Superposition on Air Bending

Analysis of the Potential of Incremental Stress Superposition on Air Bending

Simulation of forming processes with local heating of dual phase steels with use of laser beam shaping systems

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