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Delta robot

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Sketchy, a portrait-drawing delta robot[1]

Delta robots have popular usage in picking and packaging in factories because they can be quite fast, some executing up to 300 picks per minute.[2]== History ==

  • Delta Direct Drive: a 3 degrees of freedom Delta Robot having the motor directly connected to the arms. Accelerations can be very high, from 30[3] up to 100 g.
  • Delta Cube: developed by the EPFL university laboratory LSRO, a delta robot built in a monolithic design, having flexure-hinges joints. This robot is adapted for ultra-high-precision applications.
  • Several "linear delta" arrangements have been developed where the motors drive linear actuators rather than rotating an arm. Such linear delta arrangements can have much larger working volumes than rotational delta arrangements.[4][5]

The majority of delta robots use rotary actuators. Vertical linear actuators have recently been used (using a linear delta design) to produce a novel design of 3D printer.[6][7] These offer advantages over conventional leadscrew-based 3D printers of quicker access to a larger build volume for a comparable investment in hardware.

Applications

Large delta-style 3D printer[8]

Industries that take advantage of the high speed of delta robots are the packaging industry, medical and pharmaceutical industry. For its stiffness it is also used for surgery. Other applications include high precision assembly operations in a clean room for electronic components. The structure of a delta robot can also be used to create haptic controllers.[9] More recently, the technology has been adapted to 3D printers. These printers can be built for about a thousand dollars and compete well with traditional Cartesian printers.

References

  1. ^ { |url=http://www.jarkman.co.uk/catalog/robots/sketchy.htm |publisher=Jarkman }}
  2. ^ http://www.botjunkie.com/2009/11/03/adept-quattro-is-fastest-ever-for-the-moment/
  3. ^ Miller, K., "Modeling of Dynamics and Model-Based Control of DELTA Direct-Drive Parallel Robot," Journal of Robotics and Mechatronics, Vol. 17, No. 4, pp. 344-352, 1995.
  4. ^ "Gallery of robots - prof. Reymond Clavel"
  5. ^ Reymond CLAVEL. "Robots parallèles"
  6. ^ Johann Rocholl (6 February 2012). "Rostock (delta robot 3D printer)". Thingiverse.
  7. ^ Mike Szczys (13 July 2012). "3D printing with a delta robot that seems to simplify the concept".
  8. ^ "Hoosier Daddy – The Largest Delta 3D Printer In the World". 3D Printer World. Punchbowl Media. 23 July 2014. Retrieved 28 September 2014.
  9. ^ Sunny Bains (8 August 2007). "Feeling virtual worlds".