Introducing high-quality gearing with low noise generation for electric drives with Frenco rolling inspection system. This new product combines noise testing and rolling inspections with short cycle times.
The high degree of integration of components into modern motor vehicle electric drives requires a re-evaluation of the production sequence, particularly with regard to their efficiency. Important functions of highly integrated electric drive units can often only be tested once the assembly of the electric motor and the transmission is complete. The way to avoid higher costs due to entire systems failing at the end of the value chain is to use better-quality gears right from the start. A complete inspection of the components ensures low error rates.
FRENCO, the renowned specialist for gear and spline metrology, has developed a rolling inspection instrument combining a high added value with very short cycle times. This new system is created through the combination of rolling inspection for dimensional deviations such as radial run-out and tooth thickness and concurrently recording the acceleration. This makes it possible to evaluate the noise generation of the individual components enabling reliable monitoring of production deviations at an early stage.
The new Frenco system records approximately ten revolutions of the gear, taking only two seconds per rotational direction. This along with the handling of the parts makes a cycle time of 15 seconds possible. Placing the system on a hard stone plate ensures the required precision, preventing higher stresses having a negative influence on the quality of the measurements. NC axes for the center distance and the vertical position are just as much mandatory as is the fully automatic inspection process and the connection to a loading system.
An uncomplicated loading set-up is also important for easy integration and high speed. To help this, the spindles are configured vertically, allowing an optimum mounting of the gears onto the inspection device. Considering the performance and scope of the measuring machine, the footprint of less than 2 x 1 meters is very compact.
To process the captured measured values, two PCs are integrated into FRENCO’s measuring machine. One of which captures the values for the single flank gear rolling inspection and the HMI of the controller; the second analyses the noise measurement. To evaluate the data in terms of noise generation of the gears, the DISCOM Software, an automotive industry standard, is used; it is an integral part of FRENCO’s offer. Access to the vast data base and the high level of detail of the individual items of information allow precise conclusions to be drawn on the error cause of the workpieces and the manufacturing process can be modified accordingly.