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Type: Posts; User: JohnHaine

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  1. Thread: UC100

    by JohnHaine
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    118

    UC100

    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...
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    Poll: Probe speed requirements?

    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...
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    Re: Rotary table indexer

    Brilliant, many thanks Steve.
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    Re: Rotary table indexer

    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...
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    Possible 3rd axis for a lathe

    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...
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    Re: Emco Unimat lathe CNC retrofit

    "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?"
    ...
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    Re: Emco Unimat lathe CNC retrofit

    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...
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    Re: Finishing Pass Problem:

    Bruce, was this helpful?
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    Re: Migrating from Mach 3

    Thanks Gerry. A bit further forward...
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    Migrating from Mach 3

    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...
  11. Re: Turn small aluminum parts in my spindle?

    CNC Milling Machine as a Lathe
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    Re: Finishing Pass Problem:

    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...
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    Re: Thread Milling

    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)
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    Re: Stepper motor 128 vs 256 microsteps

    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...
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    Re: Stepper motor 128 vs 256 microsteps

    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...
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    Re: Stepper motor 128 vs 256 microsteps

    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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    Re: Diffrent cuts depth

    How thick was the mdf? It may have buckled slightly, I have found this when cutting through thin material.


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    Re: Completely useless t-slot clamps?

    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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    Re: Completely useless t-slot clamps?

    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.
    279702
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    First pic...
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    Re: Completely useless t-slot clamps?

    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...
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    Re: Completely useless t-slot clamps?

    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...
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    Re: Diffrent cuts depth

    Material not flat?


    Sent from my iPad using Tapatalk
  23. Re: Noob here looking for some direction...

    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. ...
  24. Re: Help please with stepper motor driver setting and mach3 steps per

    Dunno why one bothers really...


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    Re: Rotary table indexer

    No problem Steve!


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