nuckolls.bob(at)aeroelect
Guest
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 Posted: Wed Dec 10, 2008 6:54 am Post subject: Crimping of machined D-sub pins with 4-Way Indent Pin Crim |
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At 08:04 AM 12/10/2008, you wrote:
| Quote: |
I've become a bit concerned about the integrity of my crimped D-sub
pins and socket. I've been giving each connection a tug after
crimping and I just had one come off. Upon examination, I can't see
the difference between that connection and others I recently made.
So the question is, what is the proper technique for crimping on
Machined D-sub pins with a 4-way indent pin crimper? I've searched
Bob's site and the Web in general and can't find any how-to
information. None came with the tool I obtained from Stein.
In particular, how should the tool be adjusted? How far should the
wire be stripped (should the insulation be clear of the pin or
should it be in the pin)?
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Insulation can touch the pin but the wires need to be
inserted a minimum depth as observed through the inspection
hole. My installations have a pretty good gap between
end of pin and insulation when the strands are fully
inserted on the pin.
http://www.aeroelectric.com/Pictures/Connectors/D-Subminature/D-Sub_4-quad-crimp.jpg
If your tool looks like this:
http://aeroelectric.com/Pictures/Tools/Crimp_Tools/rct-3.jpg
There are no adjustments to be made. The tool is set up for
D-sub, 20AWG pins like . . .
http://www.aeroelectric.com/Pictures/Connectors/D-Subminature/D-Sub_20AWG_Pin.jpg
http://www.aeroelectric.com/Pictures/Connectors/D-Subminature/D-Sub_20AWG_Socket.jpg
and should produce a finished joint like the first
picture above.
If your tool looks like this:
http://aeroelectric.com/Pictures/Tools/Crimp_Tools/4-Quad/Daniels_4-Quad_1.jpg
then there are adjustments to be made in addition to selecting
the right pin positioner. The tool should have come with instructions.
http://aeroelectric.com/Pictures/Tools/Crimp_Tools/4-Quad/Daniels_4-Quad_2.JPG
http://aeroelectric.com/Pictures/Tools/Crimp_Tools/4-Quad/Daniels_4-Quad_3.JPG
http://aeroelectric.com/Pictures/Tools/Crimp_Tools/4-Quad/Tool-Locater_Cross_Reference.jpg
No . . .
| Quote: | Avoid the crimp pins altogether and use solder-on D-subs?
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Millions of these pins are installed every day world wide and
deliver as advertised. You need to figure out what's going
on with your materials, tools, techniques . . .
| Quote: | Use the 'regular' crimp on, stamped pins instead?
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No, these are more problematic for the neophyte builder than
machined pins. I don't even keep them in the shop. We've
been 100% machined pins for 20+ years.
| Quote: | Crimp and solder (the hole in the barrel of the pin suggests that
may be an option).
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No, that's an inspection hole. If the wires are sufficiently
inserted you can see the strands through the hole.
| Quote: | Advice or links are welcome. Thanks
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What tool do you have? What pins are you trying to install and
what connector is the target residence for the pins? Are you
trying to install 22AWG (high density) pins with the 20AWG
standard density) tool?
Bob . . .
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