E EXPERIENCE 28 - GF AgieCharmilles US

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7 AGIE experience No <strong>28</strong> January 2007 Data input on the Agiecut Vertex 2F is reduced to a few workpiece features and quality targets. The «Agievision» control generates the best possible cutting technologies from this. ED wire-cut and die-sunk mould inserts and mechanical components are the best illustrative examples for Zehatz’ high performance standard. ED wire cutting in the ultra precision concept «When Agie expanded the Agiecut Vertex series to include larger models, it was clear to us that the size 2 as F-model would be the ideal ED wire-cutting machine for our requirements», Alfonso Urzainki, the managing director of Zehatz, commented on the purchase of the Agiecut Vertex 2F. «We certainly do not need the complete range of performance, which the machine offers, for every machining job, but we have deliberately invested in the future in order to be prepared for new challenges». Zehatz is thus continuing its strategy of achieving ultra precision in all sectors of the company. Digitally controlled generator pulses With the IPG-V, the Agiecut Vertex 2F has a generator of the latest generation available which improves the EDM performance and controls the EDM process efficiently. This is made possible by a programmable, digital component, which increases the form factor of the pulses and shortens the pulse duration. How advantageous the effect of this is on the workpiece is to be seen by the fact that the machining technology is generated exactly in accordance with the workpiece height and it is no longer necessary to choose between two given workpiece heights. The technology parameters are thus adapted exactly to the given cutting height so that the best possible machining technology is employed. These individually generated technologies bring more precision to the workpiece straight off. The operator at Zehatz thus has the best possible machining technology for every workpiece in accordance with material, height, the wire type used as well as the precision and roughness required, without having to make compromises. A double mould milled from a whole piece is ready for machining on the Agiecut Vertex 2F. The precision and form-giving parts are completed with ED wire cutting and die sinking. Afterwards the mould insert can be fitted exactly into the blanking tool. Finest surfaces and tightest contour tolerances then ensure the precise production of the pull openers for food cans during blanking. Josu Mugartegui Lejardi, Sales Manager of Zehatz, using an optical measuring machine. Showing the tight tolerances of the contours of a workpiece.
8 AGIE experience No <strong>28</strong> January 2007 Zehatz Quality check at all stages of production The material quality, the tools used and the machining processes are influencing variables which have an effect on the precision of a tool. Milled workpieces often make a mirror-like impression, but sometimes have microcracks under the surface concealed by the milling. By contrast, with ED machining, material faults often first become visible through the removal process. Zehatz therefore checks the precision and quality at every stage of production. In this way, tool breakage, reworking or replacement production are for the most part avoided, and consequential costs kept to a minimum. The investment in efficient quality management is doubly worthwhile for Zehatz: Ultra precision becomes comprehensible for the customer and ultra precision helps to save costs sooner or later. A workpiece is plotted optically on a measuring machine. The contours can then be displayed on the screen in the µm range and checked for diverging contour tolerances. The workpiece is shown three-dimensionally on the screen and every point plotted with the touch probe is provided with the appropriate measurement data. The Zehatz measuring and checking centre lets you see at a first glance what great importance is attached to quality assurance. “ The Agiecut Vertex 2F is the ED wire-cutting machine with its quality results, best fits into our concept of ultra precision. Convincing also the many standard features on the Agievision control system, which markedly shorten the set-up and EDM times. ” Alfonso Urzainki, Managing Director of Zehatz
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E EXPERIENCE 28 - GF AgieCharmilles US

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