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| Solid Hobs |
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| The range of precision hobs:
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Most economical method of machining
- Spur and helical gear hobs in the range of 0.5 M to 20 M (50 DP to
1.25 Dp)
- Straight and involute spline hobs
- Serration hobs.
- Worm wheel hobs.
- Shank type hobs.
- Taper hobs (Graphite electrode & Nipple hobs)
- Sprocket hobs.
- Tailor-made hobs to suit special requirements.
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| Class of accuracy:
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Hobs are manufactured with the following
accuracies, as per DIN 3968/BS 2062.
Class AA : Ultra-precision hobs with relief ground teeth,
for highly accurate gears.
Class A : Precision hobs with relief ground teeth, but with
less accuracy than AA.
Class B : Commercially ground hobs with less accuracy than
AA and A
Class C : Unground /machine relieved hobs.
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| Basic Tooth Profile:
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The basic tooth profile of our hobs conforms to
DIN 3972/BS 2062
Basic profile I & II: For finished gears
Basic profile III: For roughing gears with grinding
allowance, and shaving gears with shaving allowance.
Basic profile IV: For roughing gears prior to finishing
operation.
Modified profile with corrections: Semi-topping - Gear
tooth tip chamfer, Gear tooth tip thinning, Full root radius, Protuberance
and semi-topping, Protuberance, Full topping. We also undertake manufacture
of hobs as per other standards, and we can design and manufacture
custom-built hobs if component drawings are supplied.
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| Key Parameters:
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Module: 0.5 M – 20 M; Dia. : 50 to 250 mm (also
DP series)
Start: Single or Multi Start.
Accuracy: AA, A, B & C (as per DIN 3968)
Forms : Non-Topping, ST, T, finishing, pre-shaving,
pre- grinding, with or without protuberance, tip relief,
full fillet, etc.
Material : M35, M42, ASP 30, ASP 2052, etc.
Each Item tested on Hoffler Gear Tester.
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