This news article was originally written in Spanish. It has been automatically translated for your convenience. Reasonable efforts have been made to provide an accurate translation, however, no automated translation is perfect nor is it intended to replace a human translator. The original article in Spanish can be viewed at Schaeffler ofrece soluciones a medida para ejes de mesas giratorias de alta velocidad

Components for economical operation

Schaeffler offers customized solutions for axis of high speed rotary tables

Drafting Interempresas24/08/2013

Applications of milling and turning, the requirements for the turntables in terms of speed, spin and precision pair constantly increase. For this reason, motors for rotary tables must possess an optimized design to adapt perfectly to the specific operating conditions.

Through the counselling service and the use of Schaefflercomponents such as bearings for rotary tables and direct drives, customers can get a previous estimate of the thermal stability of a system. In addition, characteristic risks are reduced to a minimum (p. ex. the thermal overload) of high speed rotating tables. Thanks to the correct selection of magnetic material, the development of the engine, the concept of the bearings and control all components can work stably in the boundary area. The heat loss is reduced and increases the accuracy of the system. The right design can save costs for the functioning of the axis and reduce the duration of the project.

Components selected for optimal utilization

With the series of Rotary direct drive of high performance RKI, INA Drives & Mechatronics GmbH & Co. KG has achieved extraordinary performance properties not exceeded to date. Drives a couple have one 30% higher than conventional engines. Revolutions and the mechanical power increase five times and, at the same time, the yield loss is reduced up to 60%. In this way, less heat is generated. Improves energy efficiency and operating costs down significantly due to the reduction of the cooling needs. They also convinced the downsizing options; It is possible to use smaller engines with the same power and reduces costs of converters and motors.

The interaction of the components, as for example the influence of the converter on the motor or the influence of the speed in the heat generation, is crucial for profitable operation of the shaft. It is important to develop the right mix of bearings, motors, controls and metering applications of this kind and absolutely necessary to take into account the complete Mechatronic System. In the adaptation of engines and components of the bearing, the first thing you consider is geometrical harmonization in the construction. Also consider other characteristics as the robustness of the design of the bearings in relation to the entry of heat and friction with the maximum speeds. In this way, a rotary table of high speed ZKLDF INA bearing is very suitable in combination with the IDAM RKI drive, with regard to the entry of heat into the inner ring.

With the aim of providing a compact solution for turntables, Schaeffler has optimized the internal construction of the double row ZKLDF... axial angular contact ball bearingB, which is twice the speed limit reached. At the same time, it reduces the friction torque, and high precision and rigidity of bearing are kept. In particular, in combination with high-speed IDAM RKI rotary engines, opens new possibilities for the turning and milling that until now it was not possible to achieve with standard components.

Combinations suitable applications from high speeds are the series of engines IDAM RKI's high speed or the optimized version and more profitable Smart Power combined with bearings YTRS or ZKLDF solutions. Due to the large number of possible combinations, the IDAM experts offer advisory support in the design, definition and simulation of the position right, among a large number of possibilities.

To evaluate the interaction of each of the solutions, it is important to take into account the entire system and know the different effects, as the heat loss of a turntable with option of milling or turning. Only in this way it is possible to installation recommendation for bearings, the right with minimal losses in the rotor motor and cooling strategy. Thus, it will be possible to reduce the power or the loss of heat by more than 50%, increase accuracy, and also save costs.

High performance IDAM RKI drives have a couple one 30% higher than conventional torque engines. The speed and the mechanical power multiplied by five, and at the same time, reduces the loss of energy by up to 60%.