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RE-NEW MACHINE & MAINTENANCE, A Division of Repair Parts, Inc.
2415 Kishwaukee Street, Rockford, Illinois 61104
Phone: (815) 968-4499 Fax: (815) 968-4694
The One-Stop Shop for
Barber-Colman Machine Tools
- Machine tool reconditioning
- Repair and replacement parts
- Factory trained service
- Training -- operator, set up, or maintenance -- in your facility or ours
- Gear Machine Sales -- We have reconditioned hobbers & sharpeners in stock -- can be seen under power
- Hob sharpening
- Consulting and appraisals
The tip this month is the formula for "Time required to Cut Worm Gears". This formula may be used for either the "infeed method" or the
"tangential method" of cutting worm gears.
Where
t = floor to floor time, minutes
Ng =number of teeth in the worm gear being cut
Lt = total length of travel of hob, inches
n = speed of hob, RPM
f = feed, inches of hob advance per revolution of work
T = number of threads in the hob
F = loading plus unloading time, minutes
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