The New Generation of Hydraulic Presses - The Progress of the Forming Process using Powder Presses

摘要

The ever increasing demands on today's compacts with regard to their geometry and precision call for flexible high-precision and most capable production systems. DORST has coped with these requirements by developing the new HP series of fully hydraulic presses featuring upper ram, lower ram, core rod, filler, 4 lower tool levels and 4 upper tool levels on the die set with closed-loop controlled movements. Thanks to latest servo technology and an electronic bus system it is possible to have all movements closed-loop controlled in the desired relation one to the other. Thus, today's hydraulic presses provide high stroke rates, low energy consumption and a user-friendly interface. The input of data is carried out via clearly arranged screen masks on a touch-screen. The innovative DORST IPG (INTELLIGENT PROGRAM GENERATOR) has been designed to support the set-up staff in preparing and optimizing the tool program. The combination of the machine type with the hydraulic unit determines the productivity in consideration of the specific application and the part to be pressed. All machines are equipped with the same control system; i.e. the operator interface is always identical. The die sets are of modular design. Depending on the application there can be used a different amount of platens which may also be retrofitted later. The multiplaten die sets can be equipped with an optional helical gear module that can be integrated by simply mounting it in the die set. Thanks to the closed-loop control circuits, DORST hydraulic automatic presses of the latest generation ensure unmatched precision and repeatability - and consequently process reliability - often without necessitating subsequent machining steps.