NARGESA BM25, Manual

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7. FORMULES FOR BROACHING
Height “h” will be obtained from applying the following formula
Picture 1
Bushing
Ø
60
Picture 2
Broach 18mm
Picture 3
Height to mill
d = b + h
Finished part
1. Mechanize bushing (Picture 1)
2. Take the measurement of the tooth bottom of the brush. In this case the 18mm broach. (Picture 2)
3. Next step: to reduce the bushing in the milling center. Milling height “d”will be obtained from summing up
the constante “h” and “b” (Picture 3)
4. The milling cutter to use in this case is the constante “a”,that is to say, 19,5 mm (Picture 2)
c = 18 (Picture 2)