The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)

The Craftmans Shop > New from Old

<< < (161/260) > >>

seadog:
It would suggest that the socket hadn't been fully located before it was soldered. The pins are hardly likely to have grown, are they? :lol:

awemawson:
Well yes they could ! It's a semi flexible structure with a heavy cable attached. I can see it happening if an operation happened to hit resonance in the cable / plug / board assembly. The socket is firmly bolted down to the PCB on stand off spacers, and presumably was so when flow soldered, so I don't think that it's a case of it not having been fully inserted as the bolts hold it fully in.

Decades ago (late 1960's) I was involved making multi-element infra-red arrays for use in spy satellites. Everything went though full spectrum vibration testing and you'd be amazed what that can do to apparently rigid structures!

Will_D:
I remember that ICL (our UK mainframe computer maker in Manchester) tested the large (0.5 x 0.5M) multi layer circuit boards as fitted into the main frame racks. They simulated lorry transport at all the different frequency. There were some amazing slo. mo./strobe videos of the boards flexing by about 3 times their thickness. These were iirc 13 layer boards and about 6 mm thick fibre glass boards.

And yes they actually recorded the telemetry from a truck driving on roads all over the UK o run on the shaker table.

awemawson:
Things are definitely looking up on the Renishaw Probe front :thumbup:

No, still no word about the bits that have "gone walk about" in Australia, but an MP12 brand new probe appeared on eBay that was well out of my price bracket, but the seller had mentioned that he had tested it as working. Now as I had obtained an MP12 in a job lot of bits earlier in the year I fired off a message asking him how he was testing it, as I have no idea if mine works or not.

Turns out that he had a spare OMM (that's the receiver bit that stays fixed to the machine) - mines being kicked about by Kangaroos in the Antipodes :bang:

Discussion ensued and the grand chap let me have it at a very reasonable - far too reasonable - price and not only that let me have an OMI version which is the same as the OMM but includes the electronics of the machine interface.

To cut a long story short, the postman brought me a box this morning with the Renishaw OMM & OMI - I need to curtail my excitement as we have guests for lunch and are out tonight so I wont be able to try things until Thursday.

My MP12 doesn't look too bad, but when I got it, the AA batteries had been left in and had corroded so took some extracting - I hope that the vapours haven't travelled into the electronics. But I do also have an LT02S optical probe in unknown state so quite a bit of experimentation is needed to find what does and what doesn't work.

Renishaw have used several signalling systems for their optical probes, including different IR wavelengths to allow more than one probe system to co-exist in the same machine, so I hope I have a compatible set up - time only will tell !

I am delighted to say that Cliff, the eBay seller has joined us here on the forum as 'Brent Crude' - he is a star and my current hero - thank you Cliff :bow:

tom osselton:
Nice they look like they are in good condition.

Navigation

 Message Index

Go to full version