EDM Moving up into the Champions League of mould making

Editor: Barbara Schulz

Germany - Be it hybrid parts, infusion technology or gear knobs – at Lefo Formenbau, the latest machines of GF Machining Solutions erode complex injection moulds for manufacturing everyday objects. GFMS technology convinced Lefo to be the right solution provider for their needs.

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(Source: GFMS)

Managing Director Holger Kieninger walks through the busy factory workshop of Lefo Formenbau with an attitude of determination – past grinding machines, hole-drilling EDM machines and turning machines. The hardwood floor creaks underfoot, it is loud, and the air reeks of oil. “This is the old Lefo: Years of experience, sound knowledge of trade, only a little dusty,” explains the company director and draws a comparison to football. “We’ve been playing in the domestic league so far, but we are an ambitious team. We want to get into the Champions League of mould making! Of course one needs excellent machines for that.” The walk leads to a recently modernised area of the company. The floor has been newly furnished and laminated, vitrified partition walls screen the fully air-conditioned work environment. Here, two brand-new die-sinking EDM machines from GF Machining Solutions – an Agie Charmilles Form 3000 HP and an Agie Charmilles Form 2000 VHP – are functioning reliably, and so are an Agie Charmilles CUT 300 wire-cut EDM machine and a coordinate measuring machine made by Zeiss. Kieninger proudly says, “This is the new Lefo mould-making operation.”

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The ICP (Integrated Collision Protection) and Taper Expert functions played a crucial role in the acquisition of the Agie Charmilles CUT 300. Taper Expert allows for a high-precision taper machining process of up to +- 30° at full level to 400 mm and achieves finest surface qualities in the field of taper machining with a roughness [Ra] of up to 0.2 µm. The proven ICP, meanwhile, prevents collisions and hence reduces downtimes and costs.

Jochen Jud, sales engineer at GF Machining Solutions, has been a part of Lefo since the very beginning. “This client is highly demanding in terms of precision. With the Agie Charmilles Form 2000 VHP and Agie Charmilles Form 3000 HP range, we were in a position to meet these demands. These machines are designed to erode exact results at the push of a button and do it with minimal post-processing.”

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