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Class Information
Number: 451/250
Name: Abrading > Machine > Rotary tool > Rotary cylinder > Work rotating > Rotary work holder > By hob
Description: Abrading machine in which the grinding tool is formed with a helical groove or tooth on its working surface for meshing with and grinding a gear.

Patents under this class:

Patent Number Title Of Patent Date Issued
5228814 Gear hobbing machine Jul. 20, 1993
4850155 Method for machining gearwheels Jul. 25, 1989
4765095 Method for grinding pregeared bevel gears Aug. 23, 1988
4635404 Apparatus for machining a spur gear by means of a rotating gearlike tool Jan. 13, 1987
4414495 Synchronism equipment for gear cutting machines Nov. 8, 1983
4215959 Drive train for gear manufacturing machine Aug. 5, 1980
4208155 Gear cutting machine with a hob Jun. 17, 1980
4203258 Gear finishing machine May. 20, 1980
4109362 Method of making screw rotor machine rotors Aug. 29, 1978
3971293 Anti-backlash mechanism for generating train of gear cutting machine Jul. 27, 1976

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