And even at that time we had two types of solder, the regular stuff and
silver bearing to solder parts to the ceramic strips. No ionic measurements,
but to clean the excess flux we blasted and cleaned the ceramic strips with
ground wallnut shells.
And with all the changes and improvements how come there are still problems
left?
Having fun greasing the slide rule,
Ahne.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Hernefjord Ingemar
Sent: Tuesday, 27 February, 2007 00:11
To: [log in to unmask]
Subject: Re: [TN] APEX
I don't agree with nobody...hmm...syntax error? Anyway, as an old dog, I
think we live in a marvellous age. When I joined the electronics industry,
we had aluminum profiles, on which we mounted components.
Drilling machines made holes for various component supports and the
operator's tools were simply sets of wrenches, screwdrivers, cutters and
soldering irons. You had lots of sets of screws and bolts and brackets and
washers and porcelains supports and lots and lots of wires and cables and
you mounted hundreds of small relays, medium relays, power relays and
inductors and coils and lots and lots of various capacitors and
potentiometers and so on. The soldering smoke that filled the assembly rooms
was like the LA smoke in the 60s. We had AVO multimeters, simple Tektronix
oscilloscopes and frequency counters big as houses. All signal generators
were fitted with electron tubes and the few robotic testers were monsters
with clicking relays and blinking glowlamps. We had no X-ray, no
computers, no pick'n place, no SEMs, no analytical instruments at all.
Plasma cleaners were unknown, ultrasonic cleaners didn't exist. We had not
even hand calculators. No laser coplanarity measurement apparatus, no hot
air repair stations, no UV adhesive cure lamps, no automatic components
testers, no high speed NC drilling machines, no automatic placement
inspection systems, no FTIR, no ergonomic tables and chairs and ergonomic
tools were unknown, telephones were just few (we had loudspeakers that told
you to go to a special telephone room), the list of what we did not have is
endless! So, when I compare the working conditions from my younger days with
nowaday's, I must say we live in a wonderland, technically spoken! When I
did my first inspection of a mechanical thing (a clumsy magnetron), I used
my eyes, a glowlamp and a vernier calliper, just now I'm checking a
datasheet on a Phoenix tomography Xray equipment, by means of which you can
slice'n section any complicated mechanical structure same way as CATSCAN
slices human bodies. And my mate nextdoor just depressed 'send'
and his CAD starts a highspeed computerized milling machine, that creates a
complicated chassies protoype out of a bulk aluminum piece in a fraction of
an hour. And on my desk is my endoscope waiting to be used. I enter the
flexible fiber into a microwave waveguide. I can defocus, change
magnification and rotate a little prism 180 degrees and take photos on the
inside of the windling tube. Isn't all this just amaaaazzzzing!!
Just a few words to encourage bored engineers
Inge
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bev Christian
Sent: den 26 februari 2007 19:11
To: [log in to unmask]
Subject: Re: [TN] APEX
TechNetters,
I am not a process engineer, in fact I am not an engineer of any kind, but a
scientist, so I had a different perspective. I found that the exhibition had
some nifty pieces of equipment that were either new or I did not know about.
These included, but are not limited to:
Struers (make x-sectioning chemicals and equipment) - They showed me a
system where you can put a sample in a special holder, put it in an x-ray
machine, zero in on the exact spot that you want to cross-section via the
x-ray image, and then take it out and put it in an automatic
grinder/polisher and it will prepare a sample to that exact spot.
Akrometrix (make the Thermoire) - They now make a microfringe projector
which allows warpage measurement of components down to a 1 mm x 1 mm.
They also make another Thermoire add-on, a digital image correlation
(DIC) module that allows simultaneous warpage measurements of a part on a
board and the board AND measure x and y expansion.
Soltec (strain gage data acquisition) - They showed me their latest 16 and
32 channel data acquisition equipment.
ECI Technology (make SERA testers) - Have said they will send their latest
recipes. Assure me that I should be able to measure OSP thickness using a
different solution.
So for me the show was very fruitful. And of course there were the
committee meetings and papers.
But the main reason I go is to see my friends, but you can never tell a boss
that!
Bev
RIM
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Mike Buetow
Sent: February 26, 2007 11:33 AM
To: [log in to unmask]
Subject: Re: [TN] APEX
At the risk of disagreeing with my good friend Phil, I can't remember a show
where more new machines were introduced. Yes, many were based on previous
platforms, and yes, Cogiscan's RFID feeder was highly interesting, but there
were some other breakthroughs, too. One was Viscom's combination AOI/AXI.
Vitronics added a software program to its
6745 selective machine that is superb both in design and use. I also saw a
couple of really slick dispensers.
The problem is, some of the existing machines are already so good we do get
a bit jaded and forget how impressive the engineering really is.
Mike
Mike Buetow
Editor in Chief
Circuits Assembly
30 Glenburnie Road
Boston, MA 02131 USA
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