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: