In drive engineering, high-speed drives with a rotational speed of more than 6,000 min-1 are increasingly implemented due to a more compact structure and improved energy efficiency when compared to drives with a similar performance.
Spring-applied brakes are a prevailing brake system in drive engineering. The spring-applied brake is based on the design of the disk brake. In electrically released brakes the braking power is applied by compression springs. The brakes are released electromagnetically. Thus, the braking moment applied by the friction contact is available in the de-energized state.
The highest supportable rotational speed is the result of braking moment and friction pairing; the friction value of organic pads depends on the relative velocity, specific pressure and temperature. State of the art are rotational speeds of >5,000 min-1; in that case, however, only 2/3 of the standard braking moment are available.
This project is aimed at investigating friction behavior of brake pads in spring-applied brakes at high speeds. A test stand in which a spring-applied brake can be tested in the rpm range of 10,000 min-1 was developed to achieve this objective.This project is aimed at investigating friction behavior of brake pads in spring-applied brakes at high speeds. A test stand in which a spring-applied brake can be tested in the rpm range of 10,000 min-1 was developed to achieve this objective.
