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Hydraulic presses
Powder metal presses

The manufacture of powder-metal products (large-scale series production) encompasses three production stages: the manufacture of metallic powder, forming and sintering. Presses are required for the sub-step of the forming operation to press the powder mass into a die. In the concluding sintering stage the materials are smelted to form high-precision parts (3 - 5 micron).

Technically demanding processes such as on the powder metal press require precision, dynamic control of the process parameters. Electrohydraulics is well-established here, with its high power-density combined with excellent controllability, although electromechanical systems are also suitable.


Requirements of components/systems:
  • High-precision positioning and closed loop control of up to 10 axes using one control valve and measuring system respectively (complex tools)
  • Removal control, position control for realizing parts accuracy and pressure control for density of the part
Rexroth solutions:
  • Control valves (usually WRSE, WRLE, WRVE and WRGE)
  • Electronic control of control axis by MAC8 (up to 32 axes)
  • Typical pump: A4VSO
  • Secure press control with M-modules
  • High-precision Profiled rail systems for the slide guide
  • Mechanical drives (ball screw assemblies) for auxiliary axes
  • Transfer systems for workpiece transport
  • Handling units for workpiece feed and/or removal
  • Pneumatic components are to be found in the Pneumatics Catalog
 
 
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