Graham,
Unless the boards are purely for prototype use, or you have a pneumatic /
hydraulic press and the proper tooling / dies, my recommendation is that you
find an assembly house that has an established press-fit capability and have
them install the connectors for you.
Since the board quantity is small, the cost of having someone install them
for you (and do it properly the first time) would be relatively
insignificant.
Our experience with manual insertion of press-fit, especially using arbor
presses, has not always been good (they tend to chatter as pressure is
applied, causing the connector pins to ratchet into the plated hole rather
than slide smoothly into the hole in a single motion). Also, unless the
tooling is correct, the platen tends to come down slightly off-parallel to
the circuit board - resulting in an improperly installed connector.
Bob Cooke
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Collins Graham
Sent: Friday, July 16, 2004 12:59 PM
To: [log in to unmask]
Subject: [TN] press fit connectors
Hello Technet!
A question for the press fit connector gurus out there. We are looking
at a job that uses a couple of 160 pin press fit connectors, and I've
never pressed connectors (yet). We aren't going to be building a lot of
these, so I'm trying to figure out what the minimal tooling I can get
away with would be. I am assuming that I will need:
- some support tooling to hold the board and prevent the pressing
operation from destroying it.
- tooling to hold the connector and distribute the load over the
connector
- a press - will a manual press do?
Assuming the board is properly designed (a fair assumption as it's
being produced elsewhere already), is there anything else I need? Is a
flat plate with holes matching up with the pin locations sufficient for
the base?
Thanks, and have a good weekend!
regards,
Graham Collins
Process Engineer,
Northrop Grumman Canada Corporation
Halifax
(902) 873-2000 ext 6215
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