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Letter 20076
PRESSING PROBLEMS ON ALTERNATOR SHAFTS
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We are manufacturing Alternator Shafts & Core Sub-assemblies.
We are repeatedly facing building problems on the pressing face of
the shafts and as such our production is very much affected. Both
shafts and cores are closely monitored for tolerances within spec.
Shafts are knurled to pitch 1.20 and bore ø's of cores are
also machined on CNC.
a) Could material play a part. (Currently we are using CK45 for
Shafts & EN3B for cores).
b) Is surface finish of core bore dia a factor ?
Kindly help us in sorting out this problem.
Regards,
Hari Ramamoorti
- Chennai, TN, INDIA
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I am no longer involved with manufacturing. It's been a very long
time ago: however, when I was involved with extremely close tolerance
fits, we used liquid nitrogen to freeze the mating parts, or at least
one of them. Can't remember any more.
Dear Reader, please --
- Answer or follow-up on this subject (in non-commercial
fashion).
-
- I want the contact information to
reach
the inquirer privately.
-
- Post a new
question or inquiry on a different subject.
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