The Workshop Progress Thread 2020

[martin perman 1Participant @martinperman1]

I'm not making anything like what preceeds my post but I am making a punch and die set to punch a a small hole into a piece of 0.6mm thin spring steel to make a suspension spring for one of my clocks.

The die consists of two off 6mm thick by 40mm wide bright mild steel plates that are bolted together to hold the spring strip in place and today I have machined in both pieces a 2mm wide x 4.03mm long slot through both plates.

Some of you may think "and" well I've never used such a small end mill and I didnt know whether my mills maximum speed would be fast enough for the cutter. I first drilled two holes 1.9mm dia, 2mm between centres then very carefully, my machine by the way is a large round column mill/drill, took my cutter into the first hole to a depth of 0,5mm and traversed across to the next hole and then down 0.5mm again until I finally started to break into the second plate, I then unbolted the first plate and carried out the same process until a slot appeared in the second plate. I dont have any power feed so it was very slowly fed by hand and when I had finished both slots I decided to start breathing again.

For what ever reason I decided to but a pair of 2mm dia carbide end mills and I must say I'm pleased with the results and finish.

Just out of curiosity what spindle speed should these cutters rotate at, my Mills maximum speed is just short of 3000 rpm.

Martin P

Edited By martin perman on 29/11/2020 17:45:54 Spelling mistooks

Edited By martin perman on 29/11/2020 17:49:53

[Anthony KnightsParticipant @anthonyknights16741]

Well it's plan "B". The lathe already had the collet chuck fitted, so I decided to make a start on the con rod for the beam engine. The picture shows the progress so far. The bit in the middle was done with the ball turning gadget I made during the last lock-down. I still have to saw off the excess bits on the ends and machine and drill the cross heads. That is tomorrow's project. Once done that is sheet 5 of the drawings completed. I have already completed sheets 3, 7 and 8.

[Anthony KnightsParticipant @anthonyknights16741]

Completed a few more bits for the beam engine. It's slow work as with it being flipping cold, I have to keep breaking off to get warm. The parts are- main con rod, two cross arm assemblies (not 4 as per drawing) and the flywheel hubs.

[Anthony KnightsParticipant @anthonyknights16741]

More parts for the beam engine. The cylinder has been machined to length and diameter. Now requires boring. Finished the cylinder end caps, and also the vertical beam. I didn't have any suitable brass to fabricate the beam with, so I machined something similar from a solid piece of 10 x 25 mm black bar.

[Iain DownsParticipant @iaindowns78295]

A low profile slitting saw arbour, inspired by one Joe Pie did on you tube.

This is to make a part for my surface gauge, which I may get to a bit later on (though the shed is a bit nithering, even after the heater's been on for a while.

Iain

[duncan webster 1Participant @duncanwebster1]

Some time ago I posted a picture f my revised milling machine table drive. One difficulty I had was interference from the VFD to the processor. I cured it by putting a small ferrite toroid round the offending sensor lead, but I happened to mention it to Newton Tesla gaffer (he is a club member) and he suggested it was most likely due to the VFD sending rubbish back up the mains rather than airborne interference and that I should have a few turns of the live and neutral feed to the vfd through a bigger ferrite toroid. This should remove the source of the problem rather than the symptoms. I've eventually got round to it using what is described on ebay as

Large Ferrite Core Toriod 2.2 inches

and the problem has gone away, I've tried taking the little toroid off the problem lead and it still works fine. No photos as it looks like an explosion in a tripe works

[mechman48Participant @mechman48]

Have put the beam engine on the back burner 'till the new year, just can't seem to get it right. have started on making up some Kant clamps to supplement my clamping tools…most of the bits are from the scrapbinium box apart from the side frames which were cnc cut, many thanks to member Geoff Adams down in Hampshire…

Decided to use brass hex instead of knurled MS… bit of blingy look..

Frame spacers to make, brass grippers to make..

George.

[Ian McVickersParticipant @ianmcvickers56553]

Nice clamps. 1m looking at making a few of them myself soon for some welding aids instead of G clamps. I have the frames drawn on cad so far. Are those the papacad drawings?

[mechman48Participant @mechman48]

Posted by Ian McVickers on 30/12/2020 18:48:54:

Nice clamps. 1m looking at making a few of them myself soon for some welding aids instead of G clamps. I have the frames drawn on cad so far. Are those the papacad drawings?

Yes they are Papacad drawings.

George.

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