I'm working with a client who wants me to mill some fixtures that require 3D milling. ?He can provide any of the file types that Solid Works outputs. ?I've been using Cut2D, but Cut3D seems to be optimized for carvers rather than shop machinists. ?I need a 3D CAM program that is cheap and easy to use. ?Suggestions? ?thanks much, rex

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Did you mean to use "+"?

Rick

On Mar 19, 2015, at 7:41 PM, ptegler ptegler@... [mach1mach2cnc] <mach1mach2cnc@...> wrote:

# of pulses per motor revolution + lead screw threads per inch + any gear ratio between motor and screw = pulses per inch
Mach3 then has a calibration to test that accuracy under CONFIG MOTOR TUNING.
You set a pule total the enter the actual measured distance moved and the system adjusts.
...rinse and repeat

ptegler

On 3/19/2015 10:17 PM, gas_dir@... [mach1mach2cnc] wrote:

I am NEW to CNC and am struggling.

Can someone tell me the number of steps to use in the motor tuning on Mach 3.

I am using a 1/2 10 acme lead screw. with Nema 23 motors

Thanks in advance for your help,

Kevin

--
Paul Tegler ptegler@...

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I am NEW to CNC and am struggling.

Can someone tell me the number of steps to use in the motor tuning on Mach 3.

I am using a 1/2 10 acme lead screw. with Nema 23 motors

Thanks in advance for your help,

Kevin

I am NEW to CNC and am struggling.

Can someone tell me the number of steps to use in the motor tuning on Mach 3.

I am using a 1/2 10 acme lead screw. with Nema 23 motors

Thanks in advance for your help,

Kevin

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?

Hello dear mates,
I need some help in tuning steppers in mach turn controlling a CNC lathe, when I rum Mach mill, and after a precise calibration process, the steppers work just fine in such a great tune and good speed without stall (3000 mm/m), but when I run mach turn and fill in the tuning page the same values the steppers only make loud noise and not running smoothly, even if I change the acceleration and velocity to lower values..

I use:
- Windows 7 Ultimate
- Mach3 Version 3.043.066

?any ideas?!

-- 
-hanermo (cnc designs)

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?

Hi Spencer,

If they say it should output 220V with 110V input then it should.

When you’re doing the measurement, are you measuring the voltage between any two phases of the output? (You should).

?

According to the manual PD144 is the motor rpm at 50Hz. At 50Hz your motor does 3000rpm.

?

/Henrik.

---

Fr?n: mach1mach2cnc@... [mailto:mach1mach2cnc@...]
Skickat: den 16 mars 2015 18:09
Till: mach1mach2cnc@...
?mne: Re: [mach1mach2cnc] Re: Spindle control

?

?

i talked to the guy at auto tech who has the same setup on a machine of his own. he said that the 110 volt input inverter does put out 220 volts but i think that is not true. i get 129 volts on the true RMS meter on the AC setting. it is my understanding that this should read high not low. don't want to risk killing the scope unless i have my real voltage divider or high voltage probe.

i think that some of the parameters are not what they seem using strange numbers instead of what would be intuitive. i went through all the parameters and set them to what the support guy said and think i am getting more power from the motor. i really have no idea what might have been the important change if any. i set the motor parameters as follows? 141? 220 142 high as possible, 7 on my inverter 143? 2 (2 pole motor) and PD144 at 3000 this is supposed to be max speed which is supposed to be 24000 but 3000 seems to be the correct setting???

i loaded the spindle by pressing a block against the spindle nut. i did this before and think i was not able to get more than 1.1 amps showing on the display. i had broken a bit when trying various feed speeds and it seemed that the motor had very little power. now with the parameters as above, i can get three amps and the inverter does not go into protection. when i broke the bit it went into protection mode and shut off, requiring a power cycle to reset and i can't imagine that the load was very high. it is possible that some fluke sent an impossible move that instantly loaded the spindle but it did not sound like that. i think that something in the settings caused protection to trip at some very small current load.

anyway, whether i am getting 220 volts at the motor really does not matter as long as the thing cuts well. when i get the nerve i am going to creep the feed speeds up using an old bit that i don't mind breaking and see how the motor sounds.

maybe it is better to experiment with high speed steel bits instead of carbide?

On 3/16/2015 8:47 AM, 'Henrik Olsson' henrik@... [mach1mach2cnc] wrote:

--

Best regards, Spencer Chase
67550-Bell Springs Rd.
Garberville, CA 95542 Postal service only.
Laytonville, CA 95454 UPS only.
Spencer@...

(425) 791-0309

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?

Spencer,

Exactly what type of inverter did you get for your motor/spindle, do you have a link?

?

Andy and Brendon,

Thanks!

Turns out they’re not quite as rare as hen’s teeth but still not very common as far as I can see. I looked at the Eaton Moeller website and the only ones I found there was for 115V single phase input. Drives Direct EBAY store did have a couple of larger (>2HP) ones capable of stepping up the voltage from 230V to 400V. But again, this is not something your normal type inverter can do, it has to be specifically designed for it – and most aren’t.

?

?

/Henrik.

---

----Original message----

Hi Henrik:

?

I have a 1.5hp drive that takes 120VAC single phase and puts out 240VAC 3-phase. It is an Eaton Moeller MMX11AA4D8F0-0.

?

Andy Wander

--

Best regards, Spencer Chase
67550-Bell Springs Rd.
Garberville, CA 95542 Postal service only.
Laytonville, CA 95454 UPS only.
Spencer@...

(425) 791-0309

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?

Spencer,

Exactly what type of inverter did you get for your motor/spindle, do you have a link?

?

Andy and Brendon,

Thanks!

Turns out they’re not quite as rare as hen’s teeth but still not very common as far as I can see. I looked at the Eaton Moeller website and the only ones I found there was for 115V single phase input. Drives Direct EBAY store did have a couple of larger (>2HP) ones capable of stepping up the voltage from 230V to 400V. But again, this is not something your normal type inverter can do, it has to be specifically designed for it – and most aren’t.

?

?

/Henrik.

---

----Original message----

Hi Henrik:

?

I have a 1.5hp drive that takes 120VAC single phase and puts out 240VAC 3-phase. It is an Eaton Moeller MMX11AA4D8F0-0.

?

Andy Wander

--

Best regards, Spencer Chase
67550-Bell Springs Rd.
Garberville, CA 95542 Postal service only.
Laytonville, CA 95454 UPS only.
Spencer@...

(425) 791-0309

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henrik- they are available- but way more expensive

			7? HP 220V to 415V 3 PHASE DIGITAL INVERTER CONVERTER in Business, Office & Industrial, Metalworking/ Milling/ Welding, Lathes | eBay
				Preview by Yahoo

?

--

Best regards, Spencer Chase
67550-Bell Springs Rd.
Garberville, CA 95542 Postal service only.
Laytonville, CA 95454 UPS only.
Spencer@...

(425) 791-0309

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?

Hi,

If you feed the VFD 120VAC there's no way it'll output more than 120VAC. There might be special versions available that is capable of stepping up the voltage but I've personally never run across one.

The VFD takes the AC input and rectifes it, then it generates three pahse sine(ish) output by PWM. It can't output a voltage higher than what's at the input.

For measuring the output with a DMM, read the following app note from FLUKE:

IF you decide to measure the VFD output with a scope then please be VERY (VERY!) careful. Ideally you want a high voltage differential probe for doing such measurements.

/Henrik.

15 mars 2015, Spencer Chase lists@... [mach1mach2cnc] skrev:

?

Jeremy,

I figured there was little difference. Just mentioned that the main point of the article was setting the min voltage or whatever to be sure the fan came on, which is not necessary with the water cooled motor.

I am trying to get the max power from the motor and have conflicting information re the 110 volt input VFD. One place asys it outputs 220 volts three phase and another (the nameplate) says it puts out 110 volts three phase.

I think there may be some extra parameters or different settings for the 110 volt input inverter but there does not seems to be a manual for it nor is it included in the 220/330 volt manual.

the motor is working very well, just want to make it better. if the thing stalls it destroys expensive bits. i don't want to reduce feed speeds to a crawl just to prevent this. maple is not the easiest thing to route. 90% might cut at one speed and then another piece will have crazy hard grain. i'm sure i'll break a few more cutters before i get this right.

On 3/15/2015 6:24 AM, jeremywillson@... [mach1mach2cnc] wrote:

?

Spencer
There is absolutely no difference between the air cooled version and the water cooled version of the spindle except that you need to connect an external water pump and water supply to the water cooled variety.
This is completely independant of the the VFD control for that spindle and has zero bearing on the VFD's PD settings for the spindle.
That whole thread is to do with Huanyang VFDs and their associated spindle requirements.

--

Best regards, Spencer Chase
67550-Bell Springs Rd.
Garberville, CA 95542 Postal service only.
Laytonville, CA 95454 UPS only.
Spencer@...

(425) 791-0309

--

Best regards, Spencer Chase
67550-Bell Springs Rd.
Garberville, CA 95542 Postal service only.
Laytonville, CA 95454 UPS only.
Spencer@...

(425) 791-0309