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White Paper: Reducing vibration of cable carriers

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Learn more at www.igus.com/energychains The results from these tests demonstrate that the E6 and 380 energy chain ® cable carriers from igus ® offer ideal performance with respect to vibration characteristics and smooth operation at all travel speeds and accelerations. On average, the measured vibration was 28% lower than competitive carriers. The igus ® E6 and 380 demonstrated an effective maximum value of approximately 4 m/s2. In contrast, the cable carrier with the highest levels of vibration exhibited a value of 5.6 m/ s2, or ~40% higher than the vibration exhibited by the tested igus ® carrier options. Technology outlook The new E6-1 series of cable carriers from igus ® is the next generation of the E6 series, which in the testing on the previous pages has shown to have the lowest levels of noise and vibration in cable carrier applications due to its material makeup and design. This new generation offers a weight reduction of approximately 30% when compared to the E6 series, and exhibits even lower noise and vibration levels. A shortened pitch and "brake" in the stop dog system reduce the sound pressure levels by an additional 2 dB(A). Optimized geometry makes operation of the E6-1 system very smooth, eliminating the polygon effect almost entirely, even at higher speeds and accelerations. Another option for reducing vibration on machine tools can be provided via special cable carrier design. An example of this would be creating a nested arrangement of cable carriers, which can dramatically increase milling accuracy in certain cases. These nested systems, like the example shown above, can change the system properties of the machine, and can be combined with additional systems to help minimize or eliminate damaging vibrations. These systems apply external forces to minimize or completely eliminate damaging vibrations via damping or canceling solutions, differentiated into passive and active systems. Passive systems attain their vibration damping effect by converting the vibration energy to another form. In this circumstance, an additional mass transforms the kinematic energy from the vibration into thermal energy or a relative motion between two other bodies. Active systems employ an external energy supply to create a phase-cancelling vibration. Both passive and active systems can effectively compensate for vibrations, but also have a cost impact, as these types of systems are typically only available as a customized one-off solution and cannot be transferred to other machinery. The economic use of these types of adaptive solutions is not always viable for the price-sensitive machine tool market; therefore, the primary effort in research and development for vibration-reducing systems going forward should focus on identifying and reducing the component sources of vibration. Summary As the demands for process accuracy for a range of applications increases, the need for technical advances to reduce vibrations also grows. An important element of a successful strategy is to improve the operational smoothness of energy supply systems in dynamic applications. New solutions, such as the polymer spring link connection for igus ® energy chain ® , can significantly contribute towards realizing the objective of attaining a low-vibration machine tool. While other solutions are available, the lowest cost option to create a low-vibration system is to integrate low-vibration machine components.

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