Gallery, Projects and General > Project Logs
Oh Blimey I bought a CNC Lathe !!!!
Meldonmech:
We all make little mistakes from time to time, but it makes us more careful, glad you got the replacement made up, and all is well.
Cheers David
awemawson:
Well it all went well until lunchtime. In the morning I bored it out to size and cut the pesky female thread that I screwed up last time .
Then I stopped for lunch, and we'd just finished at 13:15 and there was an enormous 'crump' like a muffled explosion. Penny and I looked at each other and both shot outside down the drive to the road - the farm is on the A21 trunk road, but is only single carriageway down here. Sure enough a 'curtain sider' HGV and a 'panel van' were entangled in each other, both drivers being trapped in their cabs.
I stopped to call 999 and Penny went on to tend the injured. Turns out that the panel van driver was a goner with major head injuries, and the HGV driver had a punctured lung. He should be ok having been carried off in the air ambulance to Kings College Hospital in London.
The road was still closed both ways at 19:00 when we went out for a meal with whacking great cranes trying to shift the HGV, but has now re-opened (23:00). Certainly spoilt the day for several families I'll be bound.
After that it was a bit hard to concentrate on cutting the male thread - but it's now done !
It brings it home to you what is really important in life
chipenter:
That road is always having accitents I have had some close calles , they overtake in the stupitest places I worked on the Blue Boys Inn oast for a few days two accidents on the roundabout , the owner said the fights are the most entertaining .
awemawson:
Today I started a job I've been putting off for far too long: The main tool turret alignment was not quite 'spot on'
The turret slides in the 'X' direction which being a slant bed lathe is steeply inclined to the horizontal. The testing consists of putting a special cylindrical tool in the turret, and going round it with a DTI mounted in the chuck, turning the chuck by hand, moving X in and out until readings are the same in the direction of the X slide to front and back. Then measuring at 90 degrees 'above' and 'below' to see that (if the cylinder lies on the axis of the main spindle) will show no deflection.
In fact it is quite a bit out as see in these pictures
awemawson:
So as you can see there is quite a 'height' error. Correction is by rotating the tool mounting block relative to it's 'stopping point' to get the height reading correct, then putting in the 'X' position into parameter store to say where zero is.
Simples :clap: If only one knows how it's all fixed together. I have a right up describing the turret, but it doesn't include the large chunk onto which all the tools mount. Now the rotating tools and the turret are made by Sauter, so I emailed them asking for a drawing so that I knew what I was getting myself into.
Oh no say they - the tool mounting block is made by Traub (the maker of the lathe) Very strange - you'd think it was all from the same people :scratch: However traub managed to email me this drawing:
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