12-10-2010, 04:39 PM
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GEAR HOBBING
Gears transmit power or motion mechanically between parallel, intersecting, or non-intersecting shafts. Millions of gears are produced each year in sizes from a few millimeters up to more than 30 ft. in diameter. Often the requirements that must be, and are routinely, met in their manufacture are amazingly precise. Consequently, the machines and processes that have been developed for producing gears are among the most ingenious we have.
Physical requirements of gears:-
1) The actual tooth profile must be same as the theoretical one.
2) Tooth spacing must be uniform and correct.
3) The actual and theoretical pitch circles must be
coincident.
4) The face and flank surfaces must be smooth.
Gear hobbing is done for the production of spur, helical worm gears, splines, sprockets, ratchet wheel & any other form that can be hobbed.
STUDY OF GEAR HOBBING MACHINES
‘HEWKS’ Universal Gear Hobbing Machine Model V-60
The heavy duty Universal Gear Hobbing Machines represents the ultimate in sound uptodate design. These are of precision construction with superior workmanship which ensures high output and fine performance. The machine can cut spur Gears, Helical Gears, Worm Gears, Splines, Serration sprocket Wheels, Ratchet Wheels and any other form that can be hobbed. The bed and main column of the machines are of ample size. These are of box type design and are well ribbed with V-type guideways. For the consistence accuracy of the machine axially adjustable Indexing worm is provided to remove backlash. Provision has also been made to remove backlash in feed screw and nut of the Hob slide. Oil reservoirs are provided in the machine which ensures thorough lubrication of Gears & Bearings.
Hardware Abstraction Layer
GEAR HOBBING
Gears transmit power or motion mechanically between parallel, intersecting, or non-intersecting shafts. Millions of gears are produced each year in sizes from a few millimeters up to more than 30 ft. in diameter. Often the requirements that must be, and are routinely, met in their manufacture are amazingly precise. Consequently, the machines and processes that have been developed for producing gears are among the most ingenious we have.
Physical requirements of gears:-
1) The actual tooth profile must be same as the theoretical one.
2) Tooth spacing must be uniform and correct.
3) The actual and theoretical pitch circles must be
coincident.
4) The face and flank surfaces must be smooth.
Gear hobbing is done for the production of spur, helical worm gears, splines, sprockets, ratchet wheel & any other form that can be hobbed.
STUDY OF GEAR HOBBING MACHINES
‘HEWKS’ Universal Gear Hobbing Machine Model V-60
The heavy duty Universal Gear Hobbing Machines represents the ultimate in sound uptodate design. These are of precision construction with superior workmanship which ensures high output and fine performance. The machine can cut spur Gears, Helical Gears, Worm Gears, Splines, Serration sprocket Wheels, Ratchet Wheels and any other form that can be hobbed. The bed and main column of the machines are of ample size. These are of box type design and are well ribbed with V-type guideways. For the consistence accuracy of the machine axially adjustable Indexing worm is provided to remove backlash. Provision has also been made to remove backlash in feed screw and nut of the Hob slide. Oil reservoirs are provided in the machine which ensures thorough lubrication of Gears & Bearings.