LATHE MACHINE FULL NORTON GEAR BOX
Preet Lathe® machines
are provided with Full Norton Gearbox also known as Quick Change Gearbox for
threading and feed shaft mechanism with different feed range and threading capability.
To do away with the inconvenience and loss of time involved in removing and
replacing change gears, lathes have a self-contained change gear mechanism,
commonly called a quick-change gear box or full Norton gearbox. There are a
number of types used on different types of lathes, but they are all similar in
principle however have different capability. The quick-change gearbox mechanism
consists of a cone-shaped group of change gears. One can instantly connect any single
gear in the gear train by a sliding tumbler gear controlled by a lever.
 |
| Full Norton Gearbox |
The
cone of gears is keyed to a shaft which drives the lead screw (or feed rod) directly
or through an intermediate shaft. Each gear in the cluster has a different number
of teeth and hence produces a different ratio when connected in the train. Sliding
gears also produce other changes in the gear train to increase the number of
different ratios one can get with the cone of change gears. All changes are made by shifting the appropriate
levers or knobs. An index plate or chart
mounted on the gear box indicates the position in which to place the levers to
obtain the necessary gear ratio to cut the threads or produce the feed desired.
Preet Lathe offers different type of quick change or full Norton gearbox as per
threading requirement and for more information please visit us at:
