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Post by vulcanbomber on Nov 22, 2016 20:35:41 GMT
Evening readers, I have now managed to finish off the pockets in the Buffer Beam Gussets, I have also drilled these for the brackets that hold the steps. These are through holes on the big 9F but I will tap them 10BA when the time comes. These now need to go onto either the Pro or maybe Ed’s mill to finist them, they end up a triangular shape with a big rad on either end. To do that needs a mill with CNC control of its quill or table (a Z axis).  And today, I took the Pony Truck Pivot Stretcher into work for finishing after it was soldered which i showed in the lasted update. First I milled the pads and bronze bush to size.  Then I slot drilled and reamed the bush ¼ inch diameter. I also added the 4 bolt holes, they will clear 8BA bolts.  And then, finally I turned the Stretcher over to clean up the top face of the bush so the pin that goes through it has a square face to sit on.  This means this stretcher is ready for fitting to the frames, when the frames are assembled it will be drilled for locating the Horn Keep Register and the Spring brackets, it will be removed, the bits soldered/welded and then Riveted back in to the frames. I’m now going to see what i’m going to do next. |
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Post by vulcanbomber on Dec 10, 2016 21:46:20 GMT
Evening readers, I managed yesterday to go to Ed’s to do the next bit of the Buffer Beam Gussets.    These will now just need a 1.5mm rad adding to the edge we have just produced, I can do that at work with a form cutter so hopefully i’ll get that done before Christmas. Thanks for looking. |
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Post by vulcanbomber on Dec 16, 2016 21:59:54 GMT
Just a quick update for tonight to show the Buffer Beam Gussets finish machined. At some point i'll need to make a small angular bracket for these at some point, the bracket goes over the 2 holes (the bracket will have clearance holes in) and provides the 3rd mounting hole for the front steps.  That's probably the final update on the little 9F this year. I'm hoping to get the pro set up next week for doing the inner gussets after Christmas, we will see however, we are currently very busy at work and things are always changing so I'll have to see what happens. I also found this on YouTube, its footage of 92220 Evening Star nearly 30 years ago on the Settle and Carlisle with 12 coaches on the back, would of been lovely to of witnessed the noise first hand. www.youtube.com/watch?v=YXvF1F-3nTUHope a few enjoy that. And I hope you all have a good Christmas. |
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Post by Jim on Dec 17, 2016 0:05:24 GMT
Superb workmanship simply superb.  Jim |
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Post by 92220 on Dec 17, 2016 8:40:53 GMT
Great work David
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Post by vulcanbomber on Dec 22, 2016 23:19:30 GMT
Evening Readers, Turns out that this will be the last update on the little 9F before Christmas. As I mentioned in the previous update, I was hoping to get onto the Pro this week to make a start on the Inner Gussets that go with the Outer Gussets. These are pretty much the same but a little bit smaller. Because the Pro is available ive gone about them in a slightly different way. It makes producing the cut out between the bolt flanges a little easier, at the cost of how much time it takes to machine. Anyway, after op 1, they look like this   And yes, that was me that tried to plough through the vice jaw..... Also, i’ve done a Roger type wobbly video on my phone of a couple of passes roughing these out. The Cutter is a 16mm solid carbide end mill, doing 1100rpm, 30mm deep, 200mm a min feed rate With just a 0.5mm step over. Milling like this gets you far more use from your cutters because your using all the flute, not just the little bit at the end, so them with CNC facilities in paticular might want to try it. www.youtube.com/watch?v=dQfWQPJulZw&feature=youtu.beAnd with that, Happy Christmas and a Merry new year. |
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Post by vulcanbomber on Jan 21, 2017 21:33:07 GMT
Evening readers. First update of the year and i have not a lot to show you. Works been quite busy so i keep getting kicked off the machine i'm using how ever i have got the Inner Gussets I started just before Christmas almost complete.   these now require the same ball nose treatment the Outer Gussets got at Ed's house a while back. Because these are smaller they wont be able to go in the tip up V so i need to make a V at the correct angle to hold these for finishing off. I have also started the U channels, again on the Pro but I think i'm getting kicked off it it monday morning.  One of the joys of the Pro is that all that material has been removed with me writing just 8 lines of program, the machines control wrote the rest for me...... |
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Post by vulcanbomber on Feb 2, 2017 21:58:46 GMT
Evening readers, couple of things to show tonight, first of all the U channels are (apart from deburring) finished.  I havnt missed a hole in the top one, its the picture isnt very good. I have also made a V to finish off the Inner Gussets I've been doing.  Usually, machining this sort of thing, you would expect to use a sine bar or similar to set the angle. I have done it slightly different, this is just as quick for a one off. Basic maths gives us the required dimensions. So does another handy feature on the pro, I input the 90MM and 6 DEGREES and the machine told me the rest.  we then throw the bit into the vice and using the X and Z axis, set the block at the required angle..  when the values are as required, we know we are at 6 degrees.  A quick way for a 1off. More soon hopefully. |
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Post by Roger on Feb 3, 2017 8:10:10 GMT
A cunning plan with clocking on the slope, I like it. That's something I've never done, but good to have in the locker.
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44767
Statesman
Posts: 539
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Post by 44767 on Feb 6, 2017 10:44:36 GMT
A cunning plan with clocking on the slope, I like it. That's something I've never done, but good to have in the locker. Yes, Roger, it's a good trick. I write a very short program for the CNC to go from one point to the next and back again then have it in a loop so it carries on doing it. Then just tap the job or fixture while it's moving until the clock stops moving. Easy! Mike |
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44767
Statesman
Posts: 539
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Post by 44767 on Feb 6, 2017 10:47:19 GMT
If you're holding the clock as in the previous photo, you'll need the CNC to be in a mode which allows feed without the splindle rotating!
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Post by Deleted on Feb 6, 2017 13:25:23 GMT
OK but why not just use a Wixi angle gauge? Much quicker.
Ron
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Post by vulcanbomber on Feb 6, 2017 18:04:55 GMT
If you're holding the clock as in the previous photo, you'll need the CNC to be in a mode which allows feed without the splindle rotating! The machine has full manual capablity. |
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Post by vulcanbomber on Feb 6, 2017 18:05:41 GMT
OK but why not just use a Wixi angle gauge? Much quicker. Ron Mainly because I have not got one. :-) |
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Post by Deleted on Feb 6, 2017 20:18:08 GMT
In that case, treat yourself to one and see what you're missing! It's one of the most useful things in my workshop, I wouldn't be without it. Accurate to 0.1 degrees, which is good enough for me.
Ron
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Post by vulcanbomber on Mar 12, 2017 22:39:32 GMT
Evening all, its been a while!! I have been rather busy at work so work on the 9F had all but stopped. However, I have got a few bits and bobs done, so in no paticular order ive drilled the replacement sade plates for the rear drag box  And finally finished some little gussets for the vertical stretchers I started many moons ago. Also included are a couple of images of the fixture I used.    And i've also made the 4 angles that go in the join between the front Buffer Beam and the Frame plates.  Further to this, Eds been Busy again, he has made the mounts for the Brake Cylinders and there fitted Bolts. And he has also milled out some new Rear brake shaft Carrier Brackets, I will get images of these in due coarse. Thanks for looking in. |
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Post by Jim on Mar 13, 2017 1:19:18 GMT
It's our pleasure to see the work you're doing. Great stuff. 👍👍 Jim. |
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Post by vulcanbomber on Mar 21, 2017 22:30:17 GMT
Hello again readers. We had a bit of a change of plans this evening so it has allowed a bit more 9F progress. I decided it would be best to finish off the Rear Brake Shaft Brackets. First I clamped them direct to the mill table and machined there thickness over the boss. Didnt get a picture however. They were then taken over to the Lathe and after turning a peg to push them with a center and another peg in the chuck to align them I faced them to produce the boss.  And the finished artical looks like so.  Hopefully more soon. |
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Post by 92220 on Mar 22, 2017 8:55:02 GMT
Lovely job David. Keep the pics coming. It's always educational to see how you do a job!
Bob
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Post by atgordon on Mar 31, 2017 17:45:39 GMT
In that case, treat yourself to one and see what you're missing! It's one of the most useful things in my workshop, I wouldn't be without it. Accurate to 0.1 degrees, which is good enough for me. Ron A few weeks ago, I visited a production shop that lets me furkle through their drops and scrap bin. While there, I watched a tool maker using his iPhone to set an angle of a part to be machined ... I was fascinated so asked him if it was accurate. He showed me how he sets zero of the flat part of the fixture, and then sets the angle of the workpiece to x.x degs using an angle setting app on his phone (he said it was a paid app with some extra features over the standard iPhone angle app). He swears by it for angles on flat stock, and a lot faster than using sine bars or angle setters. |
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