Sigma: Encouraging interdisciplinary exchange and providing a link between simulation in development and production
Sigma Hall 13 Stand B31
For Sigma Engineering GmbH the K 2019 is all about the subject “SIGMAinteract – Autonomous Optimization connects departments”. At the stand in hall 13 this will become immediately visible with a completely new design concept. Making informed decisions throughout a project requires involvement from partners in various departments. This means project data must be provided to each participant and they will need free and easy access to it. Therefore, the company will present a new tool. Users can share Sigmasoft results interactively and in 3D with colleagues, project partners and customers. Sigmasoft hereby encourages the interdisciplinary exchange and provides a direct link between the simulation in development and production.
Visitors can experience and use SIGMAinteract live at the stand. There, the company will demonstrate how virtual DoE is used most efficiently and how the tool contributes to a good interdisciplinary exchange.
As a demonstration Sigma uses the project “Pot Cloth”, which was realised as a collaborative project with Momentive Performance Materials GmbH, Germany, Emde MouldTec GmbH, Germany, Wittmann Battenfeld GmbH, Austria, and Nexus Elastomer Systems GmbH, Austria.
In this project part design and tool construction were done in parallel. Therefore, it was necessary for all partners to work closely together. Simultaneously, Sigma conducted a virtual DoE for the validation of the part design and the evaluation of the heating concept.
The Sigmasoft results showed that the honeycomb structure of the part placed high requirements on the material and the tool. There was also a high possibility for air entrapments at the weldlines of the comb walls and premature curing during filling which would need to be prevented. The hanger was what determined the cycle time. With help from Sigmasoft the ideal length and power of the heating cartridges was determined to achieve an even temperature distribution in the cavity area.
Combining the results of these two DoEs, a common ground for all project partners was created and the project board could make fast and well-founded decisions: A venting system was implemented into the tool. Premature curing was prevented via a well-chosen material and the part could also be scaled up. The hanger was redesigned allowing the heating time to be reduced by five seconds.
At the Sigma stand visitors can observe the production of the pot cloth virtual and live. It will be produced on a SmartPower 90/350, control Unilog B8, from Wittmann Battenfeld (stand 15C06). The LSR injection moulding tool including the cold runner system was constructed by Emde MouldTec (stand 12A21).
The system is completed by a ServoMix X200 dosing system from Nexus Elastomer Systems (stand 12E49-01). Silopren LSR 2640 from Momentive Performance Materials (stand 6B15) is used as material for the production.
As an example, for the knowledge transfer during the product and tool design phase central results are directly presented interactive and in 3D on the machine with SIGMAinteract. Thereby, simulation and production are directly linked together. The visitors see in a descriptive manner, how to share simulation results with colleagues and customers quickly and easily.