digital_rose_engine
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| The cam wheels push a rocker box back and forth, and as you can see from the pictured engine, every time you want a different pattern you have to create a new camwheel (Bill's first camwheel was hand-cut from lucite and was a project in and of itself). And it seemed like an obvious thing to propose using an arduino and a motor to push the rockerbox back and forth with a lot more flexibility. (Bill has since discovered that the original technology has been somewhat preserved by the Society for Ornamental Woodturners and plans for various cam designs are available, but before we know that, a digital test system to figure out how to eventually design the cams made sense). And of course that led to asking why not put all 3 motions (radial, Z, and rotation) under computer control? Bill said "you should give it a go" and someone was dumb enough to say "sure, why not?" :-) | The cam wheels push a rocker box back and forth, and as you can see from the pictured engine, every time you want a different pattern you have to create a new camwheel (Bill's first camwheel was hand-cut from lucite and was a project in and of itself). And it seemed like an obvious thing to propose using an arduino and a motor to push the rockerbox back and forth with a lot more flexibility. (Bill has since discovered that the original technology has been somewhat preserved by the Society for Ornamental Woodturners and plans for various cam designs are available, but before we know that, a digital test system to figure out how to eventually design the cams made sense). And of course that led to asking why not put all 3 motions (radial, Z, and rotation) under computer control? Bill said "you should give it a go" and someone was dumb enough to say "sure, why not?" :-) | ||
| - | I was fortunate enough to have the guts of a sherline 3 axis platform that eliminated the need to figure out a lot of the mechanical side of it. And I had a rotary table that came with my Taig mill. After a few false starts I had a prototype running with a Uno running three small stepper motors via Sparkfun easydriver boards and a spring-loaded pen holder. | + | I was fortunate enough to have the guts of a sherline 3 axis platform that eliminated the need to figure out a lot of the mechanical side of it. And I had a rotary table that came with my Taig mill. After a few false starts I had a prototype with a Uno running three small stepper motors via Sparkfun easydriver boards and a spring-loaded pen holder. |
| {{:penholder.jpg?100|}} | {{:penholder.jpg?100|}} | ||
| Line 76: | Line 76: | ||
| {{:coppermount.jpg?100|}} | {{:coppermount.jpg?100|}} | ||
| - | dichroic glass. (I bought a selection of these round glass cabs at one of the shows and just recently learned that I actually know Frank, the guy who made them!) | + | And in silver with dichroic glass. (I bought a selection of these round glass cabs at one of the shows and just recently learned that I actually know Frank, the guy who made them!) |
| + | {{::copperdichroic.jpg?100|}} | ||
| ...and then I moved on to other projects. But Bill has been slowly plugging away at his mechanical version, and I'm back to thinking about this machine and trying to take it further: | ...and then I moved on to other projects. But Bill has been slowly plugging away at his mechanical version, and I'm back to thinking about this machine and trying to take it further: | ||
| - | Better holddowns and larger parts. Mark (at Southern Steel Fabrication) is machining me some plates that I think will hold down the pieces I'm cutting more securely, and also some larger, rectangular clamps. | + | Better holddowns to facilitate larger parts. Mark (at Southern Steel Fabrication) is machining me some plates that I think will hold down the pieces I'm cutting more securely, and also some larger, rectangular clamps. |
| - | Linear patterns. This should be "just a software" project. | + | Linear patterns. This should be "just a software" project. This is Faberge work again. |
| - | Patterns with "hard turns." This is something that initially intrigued me about building this machine. In theory it should be able to turn at sharp angles rather than curves, which would open up patterns that are probably not possible using the traditional approach. But I think doing this will necessitate being able to rotate the cutting tip which may be a tougher problem. | + | {{:linearwork.jpg?100|}} |
| - | Cutting on curved surfaces. Yeah, dream on Bob! | + | Patterns with "hard turns." This is something that initially intrigued me about building this machine. In theory it should be able to turn at sharp angles rather than curves, which would open up patterns that are probably not possible using the traditional approach. But I think doing this will necessitate being able to rotate the cutting tip which may be a tougher problem. But I think that the tip needs to rotate anyway. This close up shows that even with a cutter there is a lot of smearing going on which I'd like to fix. |
| - | Camwheels for prototyping designs on Bill's mechanical system might be 3D printed fairly easily. | + | {{:closeup.jpg?100|}} |
| + | Cutting on curved surfaces. Yeah, dream on Bob! | ||
| - | More to come, but I ended up here: | + | {{:faberge_egg_rome_05.jpg?100|}} |
| + | |||
| + | Camwheels for prototyping designs on Bill's mechanical system might be 3D printed fairly easily. | ||
| - | {{:guillochependant1.jpg?100|}} | ||
digital_rose_engine.txt · Last modified: 2017/01/15 03:35 by 74.243.171.60
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