v8ian
Posted a lot
Posts: 3,748
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Jul 26, 2014 18:08:31 GMT
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When I was stumped the other week when I was trying to machine something, I had no way to machine a slot for a key, The following morning, Sunday, I braved the local boot fair and came away with a small router for £2.00, not only cheap, it was brand new, !!!!!! came with 1/4" collets so I can mount slot and end mills in it, Now the machining started in earnest, A few hours later, I had bored this out of a bit of 80mm stock, welded a few bits on and I had the start of something, Which enabled me to mount the small router to the tool post, Now that's a start, I was quite happy with this, going my way for a change, To cut a straight keyway I need to be able to lock the chuck, and to make it even more useful, lock the chuck in increments, Delving thru Ebay, I came across a 5.5" dia 72 tooth change gear for a lathe, I bored it out so I could shrink it onto the back of my 6" chuck, so with a splash of paint, and a new socket added to above the lathe I ended up with this, Marking the 72 tooth gear with a felt pen every 6 teeth, which is 30degs, and just using a scriber block I mounted a piece of 1" brass and managed to machine a reasonable 12 spline shaft, just holding the chuck stationary with my hands. Further jobs to do, I need to align the router as its run out of height adjustment and make a locking dog for the gear, all jobs in hand, I also need a speed controller, 240v 600watt, any recommendations other shapes are available, I managed a J slot so I can make all sorts of things now,
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Atmo V8 Power . No slicks , No gas + No bits missing . Doing it in style. Austin A35van, very different------- but still doing it in style, going to be a funmoble
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Jul 26, 2014 19:28:19 GMT
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for a quick proof of concept (to make sure the motor would even be happy being regulated) grab a cheapo £5 light dimmer switch, from the likes of wilkinsons. It may run rather choppy/noisily, as it's not particularly nice to induction motors. Another option would be an old variable transformer if you can get your hands on one. Invertor control is relatively standard across the industry now for speed control (used almost exclusevely as the control method on overhead gantry cranes now) but it doesn't come cheap. One slightly overkill, but easy to make option - use a pillar drill, mounted in a similar way to the router. Quite a bit of speed adjustment, and easy to upgrade the motor due to their often modular build (depending on what you find/buy/have lying around) Very clever little upgrade though - one I'll deffo be keeping in mind when I eventually get a lathe!
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Last Edit: Jul 26, 2014 19:29:48 GMT by chairchild
You're like a crazy backyard genius!
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Jul 26, 2014 19:39:28 GMT
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Colchester bantam?
I have one and where I can't get tools high enough I run the adjuster on the top of the cam lock, not great but I'm too lazy to make new tool holders.
Nice work, a spring loaded V and Inverted V (one to go between the teeth and the other on the tooth peak) will give you 144 divisions,
As for spindle indexing You can get really fancy and wack a stepper motor on it, then to do divisions easier build a Steve ward rotary index controller so instead of counting teeth, you tell it the angle or how many divisions and it does it all for you.
I built one, an interesting project, though now it's done I haven't had the occasion yet to make use of it.
Brian
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ChrisT
Club Retro Rides Member
Posts: 1,635
Club RR Member Number: 225
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Modifying my Lathe.ChrisT
@christ
Club Retro Rides Member 225
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Jul 26, 2014 19:39:34 GMT
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Nice work, I've been thinking of a way of doing something similar so I could make a some splined shafts on the lathe.
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v8ian
Posted a lot
Posts: 3,748
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Jul 26, 2014 20:06:01 GMT
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Colchester bantam? I have one and where I can't get tools high enough I run the adjuster on the top of the cam lock, not great but I'm too lazy to make new tool holders. Nice work, a spring loaded V and Inverted V (one to go between the teeth and the other on the tooth peak) will give you 144 divisions, As for spindle indexing You can get really fancy and wack a stepper motor on it, then to do divisions easier build a Steve ward rotary index controller so instead of counting teeth, you tell it the angle or how many divisions and it does it all for you. I built one, an interesting project, though now it's done I haven't had the occasion yet to make use of it. Brian Yep, A Bantam, tool position height is a bit minimal, I have similar problems with my knurling tool, A solution that came to mind was put a square of 5mm gauge plate under the toolpost, it was thin enough to clear the spigot, and I was going to keep the plate from rotating by using the locking pin into the plate, or of course machine the top off the tool than pack underneath, Chairchild, I am working in a place that makes bespoke electrical goods, there must be a spare dimmer hiding in the parts bin. I will look for a big rheostat speed controller.
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Atmo V8 Power . No slicks , No gas + No bits missing . Doing it in style. Austin A35van, very different------- but still doing it in style, going to be a funmoble
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Jul 26, 2014 20:43:15 GMT
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Hi Ian, have you checked there isn't a speed control on the router, even my cheap an cheerful 'Red Devil' backup 1/4" router has a little knurled wheel control on the top to slow it down, nice work though, i'm very impressed - so simple (in pictures) you've made it look.
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That sort of engineering is way above my station and abilities.... HOWEVER.... Great job Ian !
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eternaloptimist
Posted a lot
Too many projects, not enough time or space...
Posts: 2,578
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Aug 13, 2014 19:55:16 GMT
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I like that - nice work!
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XC70, VW split screen crew cab, Standard Ten
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Aug 17, 2014 19:43:42 GMT
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Hot rod lathe now Ian?
Great news you can machine some bits up for my van......
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