Каталог Tungaloy зубофрезерование - страница 51

INDEXABLE INSERT GEAR SHAPER 74X8D From an economical point of view, however, it is the most universal of all methods, as in addition to 'normal' external and internal gearing, it can also be used to generate other gears, which, due to their geometry, cannot be produced with the aforementioned methods, such as: • External and internal gearing with shoulders • External and internal herringbone gearing • Gearing with thrust surfaces • Component-related interference contours • General gearing that does not permit an overrun of a side and face mill or a hob, so called collision gearing. When all is said and done, the gear shaping method can be used to generate every type of gear that can be generated using the hobbing or index milling method, but conversely, this is only possible to a limited degree. Internal gearing with shoulder The new gear shapers are generally designed for roughing, i.e. gashing in preparation for finish-shaping or finish-grinding. Lower gear qualities of up to max Q8 have been achieved, but cannot be generally guaranteed, as workpiece qualities do not allow any conclusions to be drawn about tool qualities. At present, the tools approximately correspond to class B according to DIN 1829. Profiles are standardly produced to reference profile II and reference profile III standards, as defined in DIN 3972. External gearing with shoulder Herringbone gearing 51