G0602 CNC Threading Tests
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- Опубліковано 7 лют 2025
- This is the 27th video in the series as I progress through my Grizzly G0602 CNC lathe Conversion. Now that the conversion is complete I'm running the Lathe through some tests to she how she performs. In this video I will be Threading I want to see if the Tachometer and Proximity sensor I got off E bay $14 Puts out a index signal sufficient enough for Mach3 to use for threading. I have not seen or read anywhere where this type of sensor was used so I was a little concerned that it may not work but for $14 I was willing to find out. The conventional method is using a disc with a single slot or notch mounted to the spindle. I think this is a cleaner installation and you cant beat the Price plus you get a LCD readout. You can pick one up here : www.ebay.com/it...
Make sure you purchase the Type Proximity sensor that senses a Magnet you can Identify it by the end of the sensor it will be metal all the way to the end. If it senses metal it will have a 1/4" plastic tip at the end. Those type did not work since the spindle is a big chunk of metal. LOL
I will try to document and illustrate the process and hopefully put out information that others may have missed. Thanks for watching , Please subscribe, and feel free to comment,
Sam
In the next video I will continue to run some tests on the G0602 CNC
.
Disclaimer. I am not a professional. My videos are intended to
document my progress . I express no warranty as to the accuracy reliability or safety of the information provided here. By using any of the information provided in this video you acknowledge that I am not responsible or liable for injury or damage to property. Electricity is Dangerous proceed with caution follow all local regulations in your area. Visit the website at www.cnc4xr7.com
Awesome! There is nothing quite like watching a CNC Lathe creating a thread, I never get tired if seeing that. No watching the thread dial, no changing of gears, create both standard or metric threads. Doesn't get much cooler than that. Great work.
William Hardin I have to tell you I'm still amazed at what these machines can do. Always hated changing gears and threading setups timing the dial on every pass etc. this is so nice you can go from 1/4-20 , to 10-24, to M12 x 1.5 in the time it take to go to get a drink of water. No more saying I really need 10- 24 but since I'm set up on 1/4 20 I'll use that situation.
Mach 3's trajectory planning is incredible in regards to threading. I had very similar experiences as you just showed. I appreciated the fact that you cranked the speed up mid job to check the ability to follow. That looked like something I would do just prior to breaking a part or tool ;-)
Excellent series btw. Too bad your Mach 3 set ups werent around when I started. On the other hand. Thanks to those who did provide what I needed. There is a learning curve.
+CncObsession Thanks Yea I wanted to demonstrate that the Proximity sensor was really working I did it early so the threads weren't trash and it was Aluminum so no worries in regards to tooling. There is definitely a learning curve expensive too. LOL I have many Endmills to prove it on my X2 several that never made a cut LOL
Thanks for the link Sam. I'm going to get this little lathe running sooner or later. I've already got a guy that wants to buy it, but I'm not sure I'll see it once it's running again. lol
Your welcome Happy New Year!
Thanks Glenn Yea she worked just fine.
Nice work.. well so the proof it does work... I wasn't sure up front..
I do think that you should prevent changing the speed, as it seems to finish it cut before changing the feed.. (don't know if that's the way all machines work.) But that does mean I't would not keep up if the rpm's change due to heavy cut's.. Maybe something to test out on a bigger round stock..
Anyhow, congratzz ! and thanks for sharing.
RoboCNC Frees- & Graveerwerk Thanks, And thanks for posting your video and sharing the Idea. We now have a answer. I wouldn't change speeds on the fly normally this was just for the benefit of the video. The change in rpm's were around 640 I don't think the change in rpm's from heavy cuts will be significant enough to cause a problem But as far as the Index signal goes there will be a change weather you use a Proximity sensor or a Disc set up from heavy cuts.
Congrats Sam, that's awesome.
I was worried the proximity sensor would not be accurate enough for threading but it's great.
Beautiful results, I'm impressed.
Yea so far so good.
Best regard.
Thank you for sharing your progress, although it was years ago for others it was only yesterday.
Do you have a video where you explain the configuration with mach3?
Thank you for your time, attention and valuable response.
Greetings from Colombia.
Blessings in these difficult times.
Hi Jamie, there are many video's check out my playlist for Mach3
That's pretty amazing! Thanks for the great video's!
hello, Sam, I wish you a happy new year 2018, good luck for your project, thank you again for your very informative video .... andré in France ...
Hi Andr'e Happy New Year to you as well, Your very welcome!. And I made need some luck to get all this stuff finished.
In this video the 6:25 minute you show the diagram of part of Project then
I wonder how you get these diagrams of your projects?
yourself doing?
or if you pay someone to do?
Ciro Shirakura Yes,
the wiring diagrams were drawn by me using a Electrical CAD program just for wiring schematics.
what kind of coolant are you runing there??? it looks very clean. .
fireblade639 I'm running Kool mist 77 per recommended mix ratio 4 Oz per gallon
Do you have any regrets on this lathe? Watching your videos makes me want one. I have a Jet 14x40 already. If you were in my shoes would you convert that 14x40 or buy a little 0602? Thanks for the great videos and the time.
+Unorthodox Fabrication
No Regrets, So far it's been almost a year since the conversion. there are a couple things I would change. I would go full cnc right from the start with spindle control ( instead of the POT) and I would go with maybe a 1 1/2 HP motor the 1 HP is OK but I have stalled it taking deep cuts.
The G0602 is a Great Base for conversion I think its big enough and it doesn't have a lot of frills in stock form so your not paying for extra features your just going to remove. I have a small 7" lathe so if I need to turn something quick I use it.
It's hard to tell someone Not to buy another Tool LOL!
If it were me I know I would use both so I would say If you have the space and the extra $1300 go with the G0602 and leave the Jet as is. But the Jet would make a awesome CNC lathe.
Sorry I know that wasn't much Help. Be Safe Sam
Thanks for the input. I will buy another then(not that I have the space). I have owned 2 of the jet 9x20's and never used them because my larger lathe was all tooled up.
I am still on the g0704 conversion.. 1.5 years now. If I was any slower I would asked to be put out of my misery. I have a VMC in my garage I have not made a single chip with yet, and I am still worried about building another machine.
Thanks again for the great videos, it motivates me to make more videos too.
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can you please tell why you didn't use PM10x30/22V lathe or even the G4003 ?
the PM10x30 has direct mount chuck and more safe for reverse threading..! also the G4003 is more accurate on the spindle bore!
how much your run-out in your spindle index?
you did great job!
Oz
+Ozy Ozy Thank you,
both of those are great Lathes Two reasons I did not go with the PM 10 x 22/30 $$ and It has a DC motor I knew I wanted a 3 Phase motor and VFD. The G04002 0r G04003 are Awesome lathes a lot of the features with that lathe would have been removed with the conversion the D-1 chuck would be nice along with the 12 ' swing. But it all came down to $$ I completed the whole conversion for less than the G04003 would cost.
So far so good on the G0602 spindle run out for me is a no Issue.
Be Safe,
Sam
+CNC4XR7 thank you for your quick responding.... I will fallow all your steps for converting my new lathe, I am about to get PM10x30 will add some metal tubes somehow on the bottom to make it heavier as it's longer than 10x22 so it need more mass..
I think for 10x22 should be around 700lb and for 10x30 should be around 800lb but for PM10x30 only 500lb not good mass!
quick question please;: can I use Double Shaft steppers? so that I can use the lathe manually when I need to practice on machining! as I am very new to this..I know you removed the compound, so how can be used manually if it can?
thank you for sharing all these videos..keep up the good work!
OZ
+Ozy Ozy Yes you can use Dbl Shaft steppers for Manual machining. I think the Pm 10 30 is a good machine I just did not like the DC motor. The head stock looks a little Narrower as well maybe 1". I did like the Cross slide slots and the Spindle chuck mount. I assume you need the Extra Length?
Be Safe,
Sam
+CNC4XR7 I think the G0602 is 1" spindle bore too!
I will end up changing the DC motor with some 2 phase 240V once but for now I can learn CNC with that motor,,,,, I heard that the DC motor have enough torque on low speed! so that will be good for threading:)
I know I am very confused here but I may change my all plan and go get the G0602 and just deal with the threaded spindle! and short bed !
thank you
Oz
+Ozy Ozy I think If you need the 30" go with the PM 10 30 both are 1" bore the threaded spindle is a drag but unless your going to be doing Instant reverses its not really a problem. if your going to convert to 240V Might as well use a VFD and a 3 Phase motor and Have variable speed. then CNC spindle control as well. The extra $700 in price goes a long way on a conversion. My 2 cents Be Safe,
Sam
looking good. why dont you have Mach3 control the spindle speed?
Matthew Prestine Ah yes spindle speed control, I started off with this build to try and show stage by stage how I converted my Grizzly lathe I thought that most people will do the conversion in stages so thats what I have done. Stage one add the VFD 3 phase motor Variable speed, Stage 2 CNC, Stage 3 is full CNC and that will be the next step Spindle control. If your new to machining having the Potentiometer is nice so you can vary the speed on the fly.
CNC4XR7 Makes sense, I haven't followed the entire conversion or its relative steps so it wasn't apparent to me. Been machining for years, LinuxCNC user though.
Matthew Prestine I tried to do the conversion and put out information others missed so its fairly in depth.
But full cnc will be soon. thanks,
Sam
CNC4XR7 It is a very impressive conversion, that is for sure.
Matthew Prestine Thanks Much Appreciated!
what happens if u turn the spindle off ?.. mine keeps trying to cut . I thought it would stop the z and x axis altogether .
Cant say I ever tried to just turn off the spindle. sorry
ps : ive never done it while cutting . only with nothing in the chuck . :)
I can give it a try next time i'm on the G0602 thats interesting for sure. I have adjusted the speed to see if it would stay in time and mach3 does do that so at Zero speed I would think it would stop but it may default to your min. pulley speed not sure.
hi sam, wots your thoughts on mach 3 ? i run it on my lathe and mill, only problems i ever have are ones i make, wot are your thoughts please ? thanks daniel
+Daniel Kitson I think it works great I have had weird things happen a few times but a reboot will clear them up other times it was self inflicted or I thought there was a problem and it was me. LOL I use it on my Mill and Lathe
be Safe Sam
Best regards Can yopu tell hoe configurate mach3 for threading? thanks.
deimosjuf
what do you need help with
i have c10 bob and c3 index card wit a 69mm disk with 1 slot the c3 shows me the rpm but a does not cut threading (the pitch is not correct) Is necesary the limits for thrading I don´t understant the index debuonce.Thanks for the help and forgive me for my bad english.
deimosjuf
it may be better if you email me . cnc4xr7@gmail.com does mach3 and your lcd rpm agree with each other?
in mach3 under configure/ ports pins/ spindle setup special features make sure you check use spindle feedback in sync modes and also spindle speed avg.
Very nice conversion you've done there. What control and CAM software are you using? I'm having bad times with SolidCAM+Mach3 combo, especially with the feed per rev mode. The post processor I've found doesn't work correctly.
I have a couple videos on Post processors. take a look. I use Fusion 360 with a generic Fanuc post processor.
However Mach3 does not use all the same G commands.
Make sure your code includes G95 for CSS if it's not outputted in the Code it will not run it default is G94
That's good to know. Did you make any modifications on the Fanuc post processor?
suat korkmaz
Yes it will not output g95 so you have to edit the gcode
No matter what I try I can't get it start threading. Spindle revs, index reading is good but that's all. The axes doesn't move. I edited the code bellow and added G95 (I'm not sure where to add tho) but it didn't help.
%
(10MM_SCREW.TAP)
N1 T0101
N2 G0 X10. Z10.
N3 G97 S300 M3
N4 G0 X14. Z4.84 M8
N5 (--------------------------)
N6 (TH-TURN-ON-SOLID1 - THREAD)
N7 (--------------------------)
N8 G97 S300
N9 G0 X14. Z4.84
N10 G76 P000000 Q100 R100
N11 G76 X8.16 Z-25.16 P920 Q100 F1.5
N12 G97 S300
N13 G1 X10. F0.05
N14 Z-25.16
N15 G0 X14.
N16 Z4.84
N17 G97 S300
N18 G92 X8.16 Z-25.16 F1.5
N19 G0 X10. Z10.
N20 M30
%
I suggest you use the thread wizard and take a look and see how it outputs the Gcode.
will look something like this
G0 G40 G18 G80 G50 G90
G00 G53 X2 Z0.3
T909M6
G00 X0.892
G00 Z0.1
G00 X0.867
M03 S400
M08
G76 X0.845 Z-1 Q1 P0.05905118 J0.001 L15 H0.001 I29 C0.025 B0.0001 T0
M9
M5
M30
Also refer to this: www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjP1NWak4DXAhVhyoMKHZZcCagQFggoMAA&url=http%3A%2F%2Fwww.machsupport.com%2Fwp-content%2Fuploads%2F2013%2F02%2FMach3_Threading.pdf&usg=AOvVaw3rf1Z4N_9dSDgWwaTq10eJ
Thank you very much for the answer.
Ciro Shirakura Are you in need of this type software?
So good!
Thank you!
I wonder what your name ?
And thank you very much.
+Ciro Shirakura
Sam,
And your very welcome
Wow, cool! Now I know where to get bolts. LOL
Yeaaaaaa! Righhhhtt!
I'm so sorry I could not understand your answer
+Ciro Shirakura you can download the software Here tinycad.en.softonic.com/
And you could make left hand threads just as easily!
+ExtantFrodo2
Yes you can! , :-)
Would you do a vid of set up and cutting of left hand threads to clue some of in ? Great vids by the way , you have the calm to be a future instructor .
I will try and work that in there are a lot of stuff I have planned for the G0602 just busy with the PM at the moment.
Your wiring drawing does not show how you get spindle speed into Mach3. I have a similar set up and can get spindle speed in the little RPM screen but no signal goes into Mach3. When I remove the little tachometer screen and go directly into my Gecko board I get numbers in Mach all over the place.
+Dennis Facer Hi Dennis,
My Wiring for the Tach should be in the link: www.dropbox.com/s/mxc6ehji8riioyu/G0602%20CNC%20Stage%20Three%20.png?dl=0
Does the Gecko board allow for a 5v input? if so this wiring should work.
The Gecko board says signal voltage of 3.3 to 5 required. I have a 12 volt power source for my sensor. Someone said I need to wire a resistor into the circuit to get the signal down to 5 volts. Right now something is getting to Mach3 as I have a read out that varies from actual rpm to 1, and is never stable for any number for more than a few seconds. I have changed every setting I can think of in Mach3 so I am convincing myself this is a hardware problem. Thanks.
+Dennis Facer
Did you splice into the signal wire coming out of the sensor one end goes to the display the other to the BOB.
Check the voltage on that wire with the sensor blocked and Unblocked ARE you in the Range 3.3-5V/
IF so then you should be fine as far as the signal.
First of all thank you for your time. Where brown is +, blue is - and black is the signal I get the following readings:Brown to blue 12 volts steadyBrown to black 4.75 to 6.3 fluctuatingBlue to black 14.85 to 16.3 fluctuatingBlack to ground 11.28-9 pretty steadyBrown to ground +.13 to -3.0 fluctuatingBlue to ground 3.9 to 6.5 fluctuatingAll of these readings with a program running and no tachometer in the circuit. If I put the tach in the circuit mach3 locks in a reading of 13, actual RPM about 150. I am not sure what these readings reveal. Also I am not sure what you mean to take a reading with the sensor blocked and unblocked.Thank you!
+Dennis Facer
pages.ebay.com/link/?nav=item.view&alt=web&id=171846091886
This is the tach and sensor I'm using. I purchased some stronger magnets from Home Depot. There called super magnets same diameter as the one that came with the sensor just stronger.
My signal wire is yellow if I rotate the spindle until the sensor is made I get a 4.8v signal hi and then low. V.
The LCD display helps me drop the voltage down below 5 v without the display connected I would need a resister.
Massive amounts of deflection on the part. I don't think this os the way for precision
Yes it was .25 inch aluminum stock and the very first time threading.
Please send it to me.
And thank you.
Ciro Shirakura Link sent by PM