Simulative basic investigation for a new forming process punch-hole-rolling

Knoll, Maximilian; Mühl, Fabian; Groche, Peter; Schulze, Volker

doi:10.1016/j.promfg.2020.08.091

Cited by 6 publications

(2 citation statements)

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“…Collar height in DC04. In [7], tests were performed on DC04 to characterize the forming of the collar and, especially the development of the collar height in more detail. The collar height was found to increase approximately linearly with the change in radius.…”

Section: Characteristic Of the Collar Height In Punch-hole-rollingmentioning

confidence: 99%

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Conception of a multivariable product property control for punch-hole-rolling

Spies

2023

Materials Research Proceedings

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Abstract. Process controls are getting increasingly more common in forming. Nevertheless, they are not suitable to achieve consistent quality when dealing with varying process disturbances. Differing properties of the raw material and other external influences like temperature variations and vibrations make it hard to achieve the tightly specified tolerances needed in today’s production environment. Product property controls represent a solution for these difficulties and create the opportunity to integrate additional functionality into the product and the process. In this project, the implementation of a multivariable product property control is investigated using the example of a recently developed process, called punch-hole-rolling. It is targeted to control product properties such as the collar height and the hardness on the inner surface. It has been shown in previous publications that it is possible to control the collar height in 1.0338 by carefully choosing suitable process parameters. In recent works the possibility was presented to control the hardness by changing the same parameters, using the TRIP steel 1.4301. The publication at hand aims at proving the feasibility of the multivariable product property control by reviewing the previous results for 1.4301 and proving that it is possible to control the collar height and the hardness on the inside of the collar simultaneously. Further, a concept is presented for the implementation of such a control.

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Section: Characteristic Of the Collar Height In Punch-hole-rollingmentioning

confidence: 99%

“…Additionally, the process is an incremental forming process. Knoll et al classified the process as pressure forming due to the acting stresses and as a rolling process due to the main tooling used [7]. Punch-hole-rolling consists of two separate steps.…”

Section: Introductionmentioning

confidence: 99%

Conception of a multivariable product property control for punch-hole-rolling

Spies

2023

Materials Research Proceedings

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Softsensors: key component of property control in forming technology

Homberg,

Arian,

Arne

et al. 2023

Prod. Eng. Res. Devel.

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The constantly increasing challenges of production technology for the economic and resource-saving production of metallic workpieces require, among other things, the optimisation of existing processes. Forming technology, which is confronted with new challenges regarding the quality of the workpieces, must also organise the individual processes more efficiently and at the same time more reliably in order to be able to guarantee good workpiece quality and at the same time to be able to produce economically. One way to meet these challenges is to carry out the forming processes in closed-loop control systems using softsensors. Despite the many potential applications of softsensors in the field of forming technology, there is still no definition of the term softsensor. This publication therefore proposes a definition of the softsensor based on the definition of a sensor and the distinction from the observer, which on the one hand is intended to stimulate scientific discourse and on the other hand is also intended to form the basis for further scientific work. Based on this definition, a wide variety of highly topical application examples of various softsensors in the field of forming technology are given.

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