Parallel kinematic machines have one of the most innovative designs in the field of mechanical engineering. They were developed with a view to surpassing traditional machine tools in terms of speed and precision.

 The mechanical components and the moving machine parts have been trimmed back, leaving only what is essential. This results in a significant increase in reliability. The machine accuracy is not determined solely by the accuracy of the components, but also by the special spatial calibration of the main spindle positions.


Unlike the Cartesian axis arrangement found in traditional machines, where, for example, a movement in the X-direction would only involve movement of the linear X-axis, parallel kinematics would involve simultaneous movement of all axes in order to make a precise movement in the X-direction. This means the direction of movement of the main spindle is decoupled from the direction of the guides.


With parallel kinematics, the part to be moved (e.g., the main spindle) is bound to the frame by means of a specific number of rods and joints. This minimizes the weight to be moved. The rods in the machines can be adjusted in terms of length and are individually controllable. This, in combination with additional innovative developments in the area of software and control technology, results in an optimal ratio of mechanics, electronics, and software within the machine.


The advantages are high dynamics, low weights moved, and enhanced positioning accuracy.


METROM machines offer a genuine alternative to traditional CNC machines or industrial robots in any setting where the machining process requires a high level of dynamism, machining speeds of up to 450 cm³/min, and a spatial accuracy (in relation to the maximum workpiece dimensions) between +/- 0.008 for workpieces with an edge length of 700 mm and +/- 0.02 mm for workpieces with an edge length of up to 2,000 mm and a height of up to 1,000 mm.


In addition to this, the option of power and torque control enables you to tap into a wide range of additional areas of application in the field of forming and joining.


The machines that are deployed are operated within various fields of use, such as model-making, mold-making, and tool-making, GRP and CRP processing, sand mold direct milling, HSC machining and hard milling, the general precision machining of parts, or special forming and joining processes such as friction stir welding.

Five-strut parallel kinematics by METROM 

Here the main spindle is only moved by the ball screw drive of the parallel kinematics system and is attached to these “struts” by means of a special joint configuration. Another special feature is the shape of the frame, which is based on an icosahedron (mathematical twenty-sided shape). This results in an optimal arrangement of the struts, minimized risk of collisions, and guaranteed rigidity of the entire machine.

 Our new generation of machine tools meets the demands of today's technological trends:

  • Energy and resource efficiency
  • High-performance machining
  • Dry machining/minimal lubrication
  • Hard machining
  • Hybrid processes
  • Complete machining/process chain shortening
  • Reconfigurable production systems
  • Direct drive systems
  • Innovative control systems
  • Consistent CAX processes

METROM Mechatronische Maschinen GmbH

Schönaicher Str. 6  -  09232 Hartmannsdorf


TEL +49 3722 598630 - FAX  +49 3722 59863-19


Customer benefits 

  • Inexpensive machining of large components
  • Process combinations, combined force/position control with sliding torsion of the control axes
  • Medium roughing and HSC finishing in one machine (simultaneous machining)
  • Secure protection against destructive chips (sand, ceramic, silicon, brass)
  • Cost-effective adaptation to the surrounding environment 
  • Low requirements with regard to infrastructure, e.g., low electric drive power, low energy consumption, low dynamic floor load due to low backlash forces, icosahedron frame-integrated thermal cell