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Just got a lathe to retrofit
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Topic: Just got a lathe to retrofit (Read 179359 times)
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Hood
25,835
Carnoustie, Scotland
Re: Just got a lathe to retrofit
«
Reply #170 on:
January 04, 2009, 08:40:24 PM »
Nope I have an cranked style threading tool, unfortunately I cant put normal tools upside down in the turret due to the wedge clamping style of it. So yes I run the spindle the other way but tool is still in the turret. I have a normal tool for the turret if I want to do left handers
Hood
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N4NV
398
Re: Just got a lathe to retrofit
«
Reply #171 on:
January 04, 2009, 08:49:35 PM »
Maybe I missed something. I just read through the installation manual for the Allen Bradley Ultra 3000 drive and I don't see how you are controlling them from Mach. What is your setup for controlling the drives?
Vince
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Hood
25,835
Carnoustie, Scotland
Re: Just got a lathe to retrofit
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Reply #172 on:
January 04, 2009, 08:55:56 PM »
They accept analogue(both Torque or Velocity mode) and also Follower mode which includes step/dir, step up/ step Down or Encoder.
I use in follower (Step/Dir) mode but may switch to Follower (Encoder ) as the SS can now do that however at the moment I am not sure if there are any benefits as it runs great with Step/Dir.
Hood
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N4NV
398
Re: Just got a lathe to retrofit
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Reply #173 on:
January 04, 2009, 09:06:25 PM »
So you wire your step and direction wires from your BOB to CN1 pins 4 and 6? It's that simple?
Vince
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Chaoticone
5,624
Precision Chaos
Re: Just got a lathe to retrofit
«
Reply #174 on:
January 04, 2009, 09:10:33 PM »
A little more to it than that, but it isn't bad.
Brett
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Hood
25,835
Carnoustie, Scotland
Re: Just got a lathe to retrofit
«
Reply #175 on:
January 04, 2009, 09:13:47 PM »
Yes but I actually have differential inputs as the BOB I have puts the step dir out as that if I want, so I use pins 4,5,6,7 on CN1. You can however just connect them up single ended.
Hood
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Hood
25,835
Carnoustie, Scotland
Re: Just got a lathe to retrofit
«
Reply #176 on:
January 04, 2009, 09:19:48 PM »
As Brett says you can do all sorts of other things and can have up to 8 digital inputs, 4 digital outputs, 2 analogue I/O and then the relay output as well. These outputs can be configured to almost any function you could think of
Very nice drives and very configurable especially the indexing ones as they allow you to do a gated Index homing which is extremely accurate
Also they would be excellent for toolchangers as they can index to 64 preset positions with only 6 inputs.
Hood
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N4NV
398
Re: Just got a lathe to retrofit
«
Reply #177 on:
January 04, 2009, 09:20:31 PM »
So what BOB had differential outputs for step and direction?
Vince
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Hood
25,835
Carnoustie, Scotland
Re: Just got a lathe to retrofit
«
Reply #178 on:
January 04, 2009, 09:24:19 PM »
CNC Building Blocks but afraid they are not made any more. Would think it easy enough to do it yourself with either a differential chip thingy, sorry getting late and brain has stopped remebering the proper terms
or even a ready made one of the type that US Digital use for their encoders to turn them into differential encoders.
Hood
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zarzul
232
Wyoming, USA
Re: Just got a lathe to retrofit
«
Reply #179 on:
January 05, 2009, 05:08:50 PM »
I can get you a chip number if you need it still. I had to do the differential driver for my Kollomorgen driver also. It is fairly simple, step & direction in to differential step/dir out.
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