Kistler is adding a new member to its family of horizontally pre-stressed stationary dynamometers: the Type 9139AA. This instrument measures the forces in the machining processes with an exceptional signal quality opening up new possibilities in the precise analysis of machining processes or manufacturing strategies as well as in the optimization of auxiliary equipment such as cutting tools. Successor of the type 9265B model, it is characterized by a compact structure, extremely robust and a very wide range of measurements of 30 kN in the three axes. Even in the case of very high rotational speed, the high own frequency of this dynamometer allows for precise analysis. The patented design of the horizontal pre-stress greatly eliminates the negative effects of the heat typically generated during machining, drastically reducing the drift signal. This wide range of forces makes the Type 9139AA ideal for high performance cuts.
Machining process: analysis and optimization
Type 9139AA is intended for accurate analysis of extremely dynamic machining processes. High-precision measurements of all forces in action provide the user with a solid foundation for optimizing processes, manufacturing strategy, cutting tools and auxiliary equipment (such as refrigerants). Of course, this Kistler dynamometer is also perfectly suited for test bench simulation. Type 9139AA is specifically designed for flat milling and grinding applications with high rates of material removal and corresponding forces. In addition, this dynamometer can also be used for drilling and for other cutting or force measurement applications in general. The Type 9139AA is expected to quickly replace the existing 9265B.
Very robust design for high cutting performance
After the 9129AA and 9119AA types of the Kistler range, the Type 9139AA is the third horizontally pre-stressed stationary dynamometer. This model is also characterized by a very compact design and a wide range of measurements of 30 kN in the three axes.
Accurate pin-speed measurement
Clean frequency was a particular focus during the development phase on this model. Advanced analyses by the Finished Elements Method (EMF) were carried out to optimize the design and structure so that clean frequencies of about 3 kHz would be achieved despite its size. This reduces the negative dynamic impact on the signals, hence extreme accuracy even with a passage of teeth at very high frequencies.
Patented mechanics reduce signal drift
The thermal energy generated during the cutting process usually causes the untimely signal to drift. Kistler type 9139AA, 9129AAA and 9119AA have a horizontal pre-stress design that drastically eliminates its influence. Even processes that generate large amounts of heat or large thermal differences can be accurately measured.
Very good assembly ergonomics
The large number of threaded holes simplifies the installation of straps on the Type 9139AA. The installation of the dynamometer on the machine bench does not offer any more difficulties. The Type 9139AA has a Fischer connector base, a concept that is widely adopted today, with the same broaching as Kistler's other stationary dynamometers. This makes it very easy to replace the platform while retaining the existing wiring and load amplifiers.
Find out more: www.kistler.com