johnsmachines

machines which I have made, am making, or intend to make, and some other stuff. If you find this site interesting, please leave a comment. I read every comment and respond to most. n.b. There is a list of my first 800 posts in my post of 17 June 2021, titled "800 Posts"

Tag: metal work

TRIPLE EXPANSION STEAM ENGINE 1

The base casting.

The base casting.

The base of the base, machined flat

The base of the base, machined flat

The base, with 6 pillar mounting areas machined parallel & coplanar, and the crankshaft mounting blocks after an initial skimming.

The base, with 6 pillar mounting areas machined parallel & coplanar, and the crankshaft mounting blocks after an initial skimming.  Slots for big ends roughed out.  2 hour first machining session.  2998 hours to go?

After carefully examining the base casting, and scrutinising the plans to discover all of the dimensions of the base, I commenced machining on my King Rich mill (Bridgeport clone, NT40 with DRO, an excellent machine). Since the base dimensions are scattered over 3 pages of very complex plans, and I am still relatively unfamiliar with them, I am approaching the machining with great caution. At this stage I am aiming to create some flat and coplanar surfaces, with a margin of material remaining, so I can hold the base flat, without rocking, roughing out the shape, and leaving finishing to dimensions at a later date. I intend to attach the base to a rectangular piece of aluminium, so the aluminium can be clamped or held in a vice, rather than risking damaging the brass casting.

CNC Mill 4 (with some pics)

Now that I have a couple of days cleaning off the carelessly applied paint, I am prepared to show some photos.
The trouble with a 17 year old machine, even if it has done little work, is that repairs are required before it can be used.
1. New hand wheel
2. Z axis acting strangely. ? encoder faulty, or broken wires.
3. Pneumatic drawbar not working ? needs replacing.
4. Auto lubrication system not functioning. ? relay faulty, other problem.
5. Operator needs considerable training.

The only available space in my workshop was in front of the door

The only available space in my workshop was in front of the door

Showing the table, with the tool rests removed, the hand wheels including the broken X axis hand wheel, the turret and the electrical box

The broken X axis hand wheel.  replacement from China for $a20, including postage....

The broken X axis hand wheel. replacement from China for $a20, including postage….

Showing the X axis ball screw, the hand wheel gearing, and the coated way (? Teflon)

Showing the X axis ball screw, the hand wheel gearing, and the coated way (? Teflon)

The control box for the pneumatic power drawbar (not working), and the automatic lubrication pump and reservoir (also not working).

The control box for the pneumatic power drawbar (not working), and the automatic lubrication pump and reservoir (also not working).

The CNC input control panel.  I am still learning how to use this.

The CNC input control panel. I am still learning how to use this.

Burrell Traction Engine

I bought these Burrell Traction Engine castings and parts off ebay recently, because they were cheap, and my triple expansion engine castings still have not arrived!
The traction engine is 1.5″ scale, and the finished model will be about 500mm long.
The complex copper sheet part in the middle of the back row has been partly riveted and soldered. The sheet steel parts on the right hand side have had some of the fittings bolted to it. I am guessing that 95% of the build is yet to happen.
There were no plans, but Kelly Mayberry at EJ Winter has a 1.5″ Burrell in his catalogue , so I have purchased those plans hoping that they will suit. Kelly tells me that the Burrell is a fairly difficult build, so that is a challenge.
There are hundreds of rivets in this engine, so riveting will be a new skill to acquire.
22 July 2014. The plans have arrived, 9 sheets of them. Like all plans, the initial browse showed a daunting mass of detail. Some of the sheets have imperial measurements, so first task is to convert those to metric. The boiler particulars were upgraded to modern approved standards a few years ago, so they at lest are already metric.
The next task is to get the plans laminated, so they remain readable in the dirty workshop environment.
Then to starting the fun bit… the machining…..
There are many such models, working, on U Tube, and worth a look.

johnsmachines

Castings for Burrell steam traction engine. Castings for Burrell steam traction engine.

IMG_1958IMG_1959IMG_1960IMG_1961IMG_1962

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Burrell Traction Engine

Castings for Burrell steam traction engine.

Castings for Burrell steam traction engine.

IMG_1958 IMG_1959 IMG_1960 IMG_1961 IMG_1962

WILL THIS BLOG CONTINUE??

HI  METALWORKERS, MODELLERS, STEAM HEADS & FRIENDS.

I have been posting these blogs for a few months now, and have had quite a few viewers and views from many countries.

While blogging has been interesting and fun for me, there has been very little feedback or comments.

Feedback is the pay back for the time and expense of the blogger.

So, please leave some comments about the blogs, positive, negative, good, bad, boring, interesting.

Otherwise I will take my bat and ball and go home.