|
SummaryFor gears of ball thread the thread-profile requires a high accuracy and strictly dimensioned and checked tolerance fields. During machining the final forming of the arc radius of the thread profiles has subjective manufacturing steps as well. Measuring of radius is complicated, it cannot be mechanised and this process depending on persons and the measurements' results can not be documented. Consequently a radius dimension can form which can differ - although only in a slight degree - from the nominal dimensions. The effect of this difference was shown with the check and measurements carried out with calculations. Both the calculations and the measurements confirm that the discussed differences in the dimensions can cause serious damages in the operation of the thread and high attention should be paid to their check and to the accuracy of manufacturing.
|
|
