New extended potential for lightweight construction components by LASCO
16th April 2018
Current and foreseeable trends in requirements of key industries pile pressure on cost efficiency and production-oriented possibilities of the forming industry. Therefore, LASCO Umformtechnik GmbH has developed a machine concept that allows industrial forges to react flexibly to new automotive drive systems in the changeover phase: The Multiplex press MXP is servo-hydraulic press and forging hammer at the same time.
Especially production engineering in the automotive industry is marked by constant competition between optimal lightweight construction and reasonable costs. Therefore, enterprises in the massive forming sector, which deliver a considerable part of their production to the automotive industry, will have to find new ways. Only those who will fulfil the contradictory requirements of higher vehicle safety in unison with reduction in fuel consumption at low additional component costs will still be among the suppliers for the next vehicle generation.
The solution is component constructions with bending rigidity and buckling strength, and partially formed functional elements made from thin or thick sheet metal, for cold or hot forming processes requiring very high forming forces for shaping. This on the other hand can result in high investments and thus force up unit costs.
LASCO’s solution is the newly developed Multiplex press MXP. The innovative machine concept combines the drive system of the force-bound hydraulic press with that of the energy-bound hydraulic die-forging hammer. The advantage resulting from this is that the drawing operations are carried out with the smooth sequence of motions typical of hydraulic presses, and final forming and/or calibrating at a pre-set energy level can be carried out with extremely high forces.
The machine is perfectly suited for pressing and bending operations as it runs at high idle down speeds and starts the pressing operation directly after touching the work piece. Separate hydraulic circuits for ram and drawing cushion allow independent control of the motions. After the pressing and/or drawing operation, the ram is supplied with a pre-set amount of energy, which is transformed into very high forming energy in the bottom dead centre due to the short forming stroke. The control allows one to several freely programmable forming impulses with high frequency whose individual energies add up. The resulting ultimate force for forming and/or calibrating reaches a multiple of the nominal pressing force of the machine without overstraining or expanding the machine frame. Combined drawn/stamped parts can be produced with highest accuracy at comparably low investments by down-stream incremental forming impulses.
For more information visit www.lasco.com