Today the analysis of drive trains is performed with appropriate software such as KISSdesign (Ref. 12) which permits modeling the complete drive with all the main elements. Normally the time series is measured at the input or the output coupling. The handling of a time series for a drive train can be made in two different ways. The “simple variant,” using the same load spectrum for each element of the drive The “general variant,” generating individual load spectrums for different elements (such as gears, shafts, bearings) and for each stage of the drive Use of Time Series for Drive Systems with the Simple Variant A load spectrum of type A (Table 2) must be defined at the input or output of the system, at the location where the time series was measured. This load spectrum is then used across the drive system for all gears, shafts, and bearings. For this scope, it is preferred that torque and speed in the load spectrum are given as factors to be multiplied by the nominal values (see Figure 6). The drive train software will calculate the nominal speed/torque of every single element, and the same load spectrum, if defined with factors, can be used everywhere. The simple variant can be used with any drive system software permitting the use of load spectrums without any further adjustment. If the torque and speed of the time series are always positive, or if some infrequent negative values can be neglected, then this method is preferred. The results for gears and bearings will be perfect, load spectrum of type A is used. For an accurate shaft verification, always load spectrum of type B should be used, otherwise, the shaft strength will not be accurate. Often shaft strength is not critical. The use of load spectrum type A—and assuming the torsion and shear as pulsating for shaft verification—will produce conservative results (on the safe side). So, if the results are satisfying, there is no need for a more complex analysis.
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More about VAFEM:
VAFEM is devoted to providing high quality ball & roller bearings and related transmission parts for domestic and foreign customers in the Vehicle industry and Industries. Our products used in automotive and truck industry mainly include : wheel bearings, wheel bearing kits, wheel hub bearings, alternator bearings, tensioner bearings, clutch bearings, and gear box bearings etc. Our industrial bearings are mainly used in these fields such as Industrial Automation, Home Appliances, Reducers, Agricultural Machines, Precision Machine Spindles, and Transmission Systems etc. As a high-tech company specializing in bearings, we can not only provide stable and trustworthy quality products for OEM customers, but also provide non-standard bearings based on customers’ special requirements. At the same time, we can provide a series of complete product lines and have our own brand VAFEM, it stands for the abbreviation of value added for every movement, which has been recognized by more and more customers and end users.
2024 New Week VAFEM product Recommendation:
A linear-motion bearing or linear slide is a bearing designed to provide free motion in one direction. There are many different types of linear motion bearings. Motorized linear slides such as machine slides, X-Y tables, roller tables and some dovetail slides are bearings moved by drive mechanisms. Not all linear slides are motorized, and non-motorized dovetail slides, ball bearing slides and roller slides provide low-friction linear movement for equipment powered by inertia or by hand. All linear slides provide linear motion based on bearings, whether they are ball bearings, dovetail bearings, linear roller bearings, magnetic or fluid bearings. X-Y tables, linear stages, machine slides and other advanced slides use linear motion bearings to provide movement along both X and Y multiple axis.
2024-09-06