In addition, the installation spaces available are becoming increasingly small due to the increasingly compact constructions. Mayr power transmission has therefore developed the new torque limiting clutch EAS-HSC (High-Speed-Compact) for speeds of up to 12,000 rpm.
EAS-HSC clutches transmit the torque backlash-free during operation, and allow the drive components to slow down freely on overload.
In test stand technology, torque limiting clutches must be capable of transmitting the torque backlash-free and with torsional rigidity at extremely high speeds. The only devices suitable for this purpose are residual torque-free or disengaging torque limiting clutches, which allow the stored rotational energy in coupled masses to slow down freely.
Torque limiting clutches in high-speed applications must have a high balance quality in every individual component, so that optimum running smoothness of the drive train is guaranteed in combination with the components. Therefore, the optimisation of the mass unbalance was one of the highest priorities in the technical specifications.
In addition to their extremely compact construction, a high performance density reduces the rotating masses, which has a positive effect on running smoothness and machine dynamics. The clutch is balanced in completely assembled condition to a balance quality of G 2.5 at a reference speed of 3000 rpm.
If the torque in the drive line exceeds the limit value set on the EAS-HSC, the clutch disengages via a unique disengagement mechanism. This holds it securely in disengaged position. The torque drops immediately and an installed limit switch detects the disengagement movement and switches off the drive.
The limit switch signal can also be used for further control functions. The clutch separates the input and output completely and remains in this condition until it is re-engaged by hand or using a device.
In normal operation, the torque on the EAS-HSC is transmitted using balls which engage simultaneously with the hub and drive flange grooves. Cup springs clamp the balls via a ring. The level of the spring force is proportional to the transmittable torque. This principle also remains backlash-free when the grooves wear down, as the cup springs have a falling characteristic curve. Therefore, the torque is transmitted with torsional rigidity up to the pre-set trigger value. In case of overload, the pre-tension force of the spring and the clutch trigger highly accurately.
The clutches transmit the torque backlash-free during operation, and ensure that the drive components slow down freely on overload. During the overtravel time, no engagement impacts occur which might have a negative effect on the drive line. Re-engagement takes place “synchronously” only at the disengagement position. This is frequently required if the input and output always have to have the same angular position to each other.
With its five construction sizes, the EAS-HSC provides nominal torques from 5 to 1000 Nm. Depending on the size, speeds from 6000 to 12,000 rpm are permitted.Contact:
Hermann Bestle | Chr. Mayr GmbH + Co KG
Integrating One’s Sights on the Factor of 10: “futureAM – Next Generation Additive Manufacturing”
26.10.2018 | Fraunhofer-Institut für Lasertechnik ILT
BladeFactory research project: Quicker rotor blade production and a higher quality result
12.10.2018 | Fraunhofer-Institut für Windenergiesysteme IWES
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
Physicists at ETH Zurich demonstrate how errors that occur during the manipulation of quantum system can be monitored and corrected on the fly
The field of quantum computation has seen tremendous progress in recent years. Bit by bit, quantum devices start to challenge conventional computers, at least...
09.11.2018 | Event News
06.11.2018 | Event News
23.10.2018 | Event News
13.11.2018 | Life Sciences
13.11.2018 | Life Sciences
13.11.2018 | Awards Funding