Aufrufe
vor 1 Jahr

MDA Technologies 3/2016

  • Text
  • Technologies
  • Technologies
MDA Technologies 3/2016

time and torque during

time and torque during rotation. In the past 2 years Aris has significantly intensified the development work and expanded its production and also its laboratory with a test bay. The company has also opened up completely new areas of application. The proven product lines such as the ‘Tensor’ or the ‘Nano’ type series perform highly precise rotational movements, the “Linearis” – as the name suggests – was designed for equally precise linear motion. Dryspin technology: an advantage for high helix thread Dipl.-Ing. Rolf Schneider, one of the two managing directors of Aris: “With this new type of series we are targeting applications such as the adjustment of ventilation and supply air dampers in paint shops in the automotive industry.” Here the precision of actuators plays an important role in the energy management and, ultimately, also in the quality of the painting, because impurities must be kept away. For this reason, the Linearis drives are “free of paint wetting impairment substances (PWIS)”. About igus Igus GmbH is a globally leading manufacturer of energy chain systems and polymer plain bearings. The Colognebased family business has offices in 35 countries and employs around 2,950 people around the world. In 2015, igus generated a turnover of 552 million euros with motion plastics, plastic components for moving applications. igus operates the largest test laboratories and factories in its sector to offer customers quick turnaround times on innovative products and solutions tailored to their needs. Chicago, USA Come and visit us! Booth E-4545 Free tickets via our homepage

01 The dryspin lead screw unit operates without lubrication and maintenance. The high helix thread creates the prerequisite for low loadon the electric motor, precise positioning and minimised noise 02 With the Linearis system, ARIS is expanding its product range of actuators for precise linear motion The Linearis drives convert the rotation of the electric motors into a precise linear movement and thereby apply 600 to 2,500 N actuating force depending on the size. The “dryspin” technology developed by igus, in which a plastic nut made of wear-resistant high-performance polymer moves along a stainless steel high helix lead screw, is a central component of this drive system. This high helix lead screw units offer specific advantages. Dipl.-Ing. (FH) Michael Andersen, project manager design/development at Aris “The high pitch means that we achieve large strokes with relatively few rotations. This puts less stress on the drive, reduces the rotary speed and minimises the noise output.” Aris uses dryspin drives from igus with customised outer geometry of the nut. In the bearing block, two axial plain bearings made of igus high-performance polymer ‘iglidur Q’ ensure the absorption of high loads; at the same time the clearance of the unit can be set via the axial bearing. tested by igus – obviously with positive results. This collaboration contributed to a very short development time. Michael Andersen: “We arrived at the results faster than expected, which we need.” Among the tests performed by Aris in the in-house laboratory, besides the load tests of the Linearis system there were also a series of tests with different types of contamination. Only when all the tests were completed satisfactorily did Aris begin with the market launch. Rolf Schneider: “Linearis has established itself quickly – in the project planning of new systems and also in the retrofitting and upgrading of existing facilities.” Photographs: teaser fotolia, 01 and 03 Aris Stellantriebe GmbH, 02 and 04 igus GmbH www.igus.com Lubrication free operation Some customers who were introduced to the new drive by Aris were initially sceptical. Michael Andersen: “Initial reservations about the plastic material could easily be resolved with a bit of gentle persuasion. The service life calculations from igus and the test results from Aris speak for themselves, and the freedom from lubrication of the dry-running linear drive is a big plus in painting, just as in many other applications.” The same applies to the maintenance-free operation. The linear actuators used in these areas so far had to be lubricated once a week, which not only takes time, but also increases the risk of dirt accumulation. Moreover, as noted by the Aris sales personnel, for some customers the reference to igus components was a good “door opener”, which eliminated the scepticism about plastics. The first prototypes of the new linear drive were intensively tested in the Aris laboratory. The dismantled drive elements were then 03 ”Tried and tested” Aris tests the dryspin units under extreme conditions MACHINE ELEMENTS 04 Michael Hornung, igus product manager, linear and drive technology (left) and Dipl.-Ing. (FH) Michael Andersen, Project manager design/development at Aris (right) MDA Technologies 3/2016