Gear Cutting Tools
Hobs - Torion
Hobs - Torion
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For module range<br />
Item<br />
no.<br />
Measurement<br />
Symbol<br />
Quality<br />
grade<br />
above above above above above above above above above<br />
0,63–1 1–1,6 1,6–2,5 2,5–4 4–6,3 6,3–10 10–16 16–25 25–40<br />
Tolerances in µm<br />
AA –25 –28 –32 –36 –40 –50 –63 –80 –100<br />
13<br />
Tooth thickness on the<br />
reference cylinder<br />
fs –<br />
A –25 –28 –32 –36 –40 –50 –63 –80 –100<br />
B –50 –56 –63 –71 –80 –100 –125 –160 –200<br />
AA 4 4 5 6 8 10 12 16 20<br />
2<br />
start<br />
A 7 8 9 10 12 16 20 25 32<br />
B 14 16 18 20 25 32 40 50 63<br />
14<br />
Hob lead<br />
from cutting edge to<br />
cutting edge in the<br />
direction of spiral<br />
+<br />
f HF –<br />
3–4<br />
start<br />
AA 4 5 6 8 10 12 16 20 25<br />
A 8 9 10 12 16 20 25 32 40<br />
B 16 18 20 25 32 40 50 63 80<br />
AA 5 6 8 10 12 16 20 25 32<br />
5–6<br />
start<br />
A 9 10 12 16 20 25 32 40 50<br />
B 18 20 25 32 40 50 63 80 100<br />
AA 6 6 8 10 12 14 18 22 28<br />
2<br />
start<br />
A 11 12 14 16 20 25 32 40 50<br />
B 22 25 28 32 40 50 63 80 100<br />
15<br />
Hob lead<br />
in the direction of spiral<br />
between<br />
any cutting edges in one<br />
axial pitch<br />
3–4<br />
start<br />
AA 6 8 10 12 14 18 22 28 36<br />
A 12 14 16 20 25 32 40 50 63<br />
B 25 28 32 40 50 63 80 100 125<br />
18<br />
Pitch deviation<br />
between adjacent<br />
threads of a tooth<br />
segment<br />
F HF<br />
+<br />
fpx –<br />
2–3<br />
start<br />
4–6<br />
start<br />
A 7 8 9 10 12 16 20 25 32<br />
B 14 16 18 20 25 32 40 50 63<br />
AA 6 7 8 11 13 16 20 25 32<br />
A 9 10 12 16 20 25 32 40 50<br />
AA 8 10 12 14 18 22 28 36 45<br />
5–6<br />
start<br />
A 14 16 20 25 32 40 50 63 80<br />
B 28 32 40 50 63 80 100 125 160<br />
AA 5 5 6 7 8 11 13 16 20<br />
B 18 20 25 32 40 50 63 80 100<br />
AA 8 8 8 11 14 17 20 25 31<br />
19<br />
Pitch deviation<br />
between any two<br />
spirals of a tooth<br />
land within<br />
the hob lead<br />
Fpx<br />
2–3<br />
start<br />
4–6<br />
start<br />
A 14 15 17 20 22 28 35 45 56<br />
B 28 31 35 39 45 56 70 88 112<br />
AA 10 10 10 13 16 19 22 29 35<br />
A 16 18 19 22 26 32 40 51 64<br />
B 32 35 40 45 51 64 80 101 128<br />
129