... There are several systems for producing gear drives with no backlash. But, without using one of these methods, there will be gear lash. Some gear motors...
... Yeah, this is definitely my feeling on them, too. If I hadn't seen how well steppers can do with the Gecko 201 drives, I would still be an ardent stepper...
... They drive DC brush servo motors from a variable-width pulse train provided by my universal PWM controller or other source of PWM pulses. This is a true...
This list is for the discussion of CNC and related topics including CAD, CAM, EDM, & DRO. The list focuses on the construction of home shop CNC machines along...
CAD_CAM_EDM_DRO@yahoo...
May 1, 2004 10:38 am
72363
Does that mean the the PWM controller would be used in place of a Gecko/etc drive or work with the Gecko/etc drive? Jess ... From: "Jon Elson"...
It 'replaces' the Gecko/etc. Think of it as just variable power-to the motors. The more power the faster the motors run. Feedback comes from the encoders and...
Patrick J
patrick@...
May 1, 2004 12:09 pm
72365
... steppers... ... seen how ... an ardent ... Gecko 201, ... still go ... computer. ... bargains ... without knowing ... going from ... can be ... slot ... ...
I had my X axis loose a bunch of steps but the drive didn't fault. Upon further examination if I spin the motor by hand it won't fault. Can I assume the drive...
... The PWM controller and some number of PWM amps replace the Gecko or other servo drive. The Universal PWM Controller connects to the computer through the ...
... Does it still work in closed loop mode, ie. the motor resists being turned manually when the drive is enabled? I'm guessing it is not resisting movement,...
... I would also suggest checking real well for bad connections, all over, as that'll make it do what he describes, before assuming that anything in ...
... being turned ... Hi Jon yes. instead of faulting and shutting down the drive it looses power momentarily then reengages. My X axis screws are connected...
Tighten it up or rebuild it to give less slop between encoder and motor. Max is 128 before it gives and error. Vince ... From: "tig415" <tig416@...> ...
I've been a bit slow on my project. This is what I've come up with for my machine. The wooden mock up before I start cutting metal for my Z support is...
Does anyone actually have Mach 2 running a lathe with the threading working? I have an Emco compact 5, can I use the stock spindle encoder as it is or do I...
The once per rev count should work. If you used the multiple counts per rev section you would need to make one of the slots 2x the size of the others for so...
Hi, I am looking to retrofit a busy-bee milling machine: http://busybeetools.ca/cgi-bin/picture? &NETID=0345350502040532429&NTITEM=B1976 First off, would you...
... the ... different ... that ... old ... In T-CNC you can put in pretty much any step rate you want although the PC may not keep up. the opening data screen...
Hi Gregory, Just a thought, why not put the angled support for the vertical on the BACKSIDE, this way you won't loose as much of the throat (Y). Alan KM6VV...
Well the angle is due to the fact that I want to mount this thing to a piece of 18"x24" granite. The foot will give a good base to mount it with. The XY...
Hi! I'm a "newbie" at this too.. just designing my own retrofit for a very simillar sized machine. I can let you know a few things I've found out...(and if...
Though I would ask since I'm still learning. How are you accurately setting zero for Z. I drive down and us a visual method, with a light behind the cutter...
You can use a piece of paper between the tool and the part. Move the paper back and forth while lowering the tool. When the tool grabs the paper you will be...
What I am doing, is a process of setting up a "portable" home switch in series with my normal limit/home switches. This switch will be set to some "known" Z...
Create a simple electrical circuit - constant known thickness plate, put on top of the work(or at known z position), with cable attached. Attach another cable...
