From Alibab you can get BT30 split collets that have virtually zero projection, they use an M12 drawbar. If you used say a 10mm or 12mm collet (or imperial equivalent) then make an adapter from...
Type: Posts; User: JohnHaine
From Alibab you can get BT30 split collets that have virtually zero projection, they use an M12 drawbar. If you used say a 10mm or 12mm collet (or imperial equivalent) then make an adapter from...
Yet another update, this time to correct the formula for the cut depth which was slightly too deep.
Following a few useful comments on another website I attach a revised version and an example output. The main differences here are -
- the space the previous version inserted between the g-code...
Typical propagation delay of the HC125 is 9 ns, the difference in delay between channels of the same chip will be pretty small, significantly less than this. The reason for connecting outputs (and...
Having finally added an A axis to my little CNC mill I've been looking for things it can do and got interested in knurling. Here's an example I did with a program I developed.
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So, I'm finally upgrading my workhorse office laptop and will have an old but functional Dell Latitude Win 7 machine spare as a result. In the workshop the CNC machines are controlled by an even...
I am involved in developing a new probing technology for CNC machines for tool setting. It will work with both lathe and mill, and for example in the lathe can be used to calibrate tool offsets very...
Brilliant, many thanks Steve.
I've been using this excellent design from one of the supplied kits for a couple of years now with no problems. But just got a question stimulated by discussion over on the ME forum. When dividing...
I'm not sure if people here are familiar with Eccentric Engineering from Australia - they make some innovative tooling ranging from the Diamond Tool Holder (which is not new but an excellent general...
"From your post I believe I can at least achieve spindle speed control, and x, y control of tool carriage with Mach 3 right?"
Correct.
"And I also would need an encoder for the spindle?"
...
Mach 3 will certainly manage a 2-axis lathe and control the speed of the spindle, and with a suitable spindle sensor will do threading. Lathes don't normally do cnc drilling from the tailstock, the...
Bruce, was this helpful?
Thanks Gerry. A bit further forward...
I wonder if I could tap the collective wisdom here on how I should migrate from Mach 3 please? I've been using M3 for about 8 years now generally successfully, using an old Dell Optiplex computer...
CNC Milling Machine as a Lathe
Hi Bruce, I think it may be that the algo in your CAD/CAM that generates the coordinates, which are I think incremental (?), for some reason is generating a Z coordinate that has a small and varying...
Neil, I know this goes back a bit, but what inserts do you use please? I'd like to make one of these but a size smaller to do M14.
John (in UK)
Here is an explanation for using high orders of microstepping:
Microstepping: Myths and Realities | MICROMO
Based on that I would suggest that you don't set your microstepping to any more than...
Quite correct, if you feed the driver with a given step frequency and increase the microsteps the motor will go slower. Therefore the CNC motion controller has to increase the step frequency to...
I should think that unless you are trying to go very fast there's no point in going more than 16 or 32 microstepping. You certainly I won't get better resolution.
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How thick was the mdf? It may have buckled slightly, I have found this when cutting through thin material.
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It might well have done but not enough to notice....actually I was in a bit of a hurry so didn't bother but sometime I will do that.
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Here are some photos of a setup on my mill table now, with 2 of these holding an MDF block onto which was screwed a plate of PCB material for profiling.
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First pic...
Yes they do chew up the bottom of the slot so I pop a slip of aluminium under the screw, and that's also why I fit a second tee nut against the clamp one as a backup. These aren't a panacea but they...
If these are mite-e-bite clamps they are great. But you only use them one end of the stock, clamp against a fence bolted square to the table at the other. You need to set the clamping hex screw to...
Material not flat?
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I have converted a Myford S7 to cnc and .01mm is possible with care. But if you want to buy a cnc lathe ready built of that size at a sensible price I think you will need to look at something used. ...
Dunno why one bothers really...
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No problem Steve!
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