Arduino Indexer Part 2 ( See Metal Casting at Home Part 64 for Part 1)
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- เผยแพร่เมื่อ 15 มิ.ย. 2024
- This is part 2 of my Arduino indexer build. Part one was shown as • Metal Casting at Home ...
This will enable any number of divisions to be indexed at the touch of a button.
The electronics and Arduino sketch were devised by Gary Liming and can be seen here. liming.org/millindex/
Products used
Stepper motor
www.omc-stepperonline.com/nem...
Plastic enclosure 158 x 90 x 60mm goo.gl/7isdfo
Arduino Uno and LCD shield goo.gl/5viGqE
Motor driver goo.gl/wYhQKo
Rocker switch goo.gl/WuzS5R
Push button switch goo.gl/5m4aGU
4 pin connector goo.gl/Pwm3U7
The socket part of the connector should really be on the enclosure with the plug on the motor but this is a super little connector and as the motor is only 3.2 volts there is no danger of shock
I could supply a casting for the toothed pulley if anyone wants one. - แนวปฏิบัติและการใช้ชีวิต
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I love the scientific approach. You're a freaking hero. Actually more educational and enjoyable than lectures I've had about this.
Really nice and useful. It's amazing to see all the places and folks using Arduinos. Great video!
Arduino and Electronics as well, you Sir never cease to amaze. Thanks for sharing.
Thanks for including links to the sketch and parts used. I like this project!
Fabulous project. It will be most interesting to see how it works in practice. Thank you for sharing.
nice job showing how to properly solder and assemble the cable connector.
Good skills and workmanship.
Myfordboy, you are definitely a man for all seasons, and reasons. I would like to build one, but I am sure the electronics would be beyond this unlearned 65 yr old brain of mine. Just an analog guy living in a digital world. See you in part 3.
I'd love all of your machining videos, and NC arduino conversion, very educational,I hope these channel to stay on air forever. thanks guys out there and God bless
Anxious to see it in action!
well that looks a nice thing. very impressed as always
I thought about doing something like this, but manual index the finer increment wheel with another wheel mounted on the side. I enjoying seeing ppl modify these spindexers and i always get ideas for them
Congratulation for 100 000 subscribers! And for all great films! ;)
Absolutely amazing! Very well done!
I love this build , Works perfect ! Thumbs up ..
Ficou um trabalho perfeito. Parabéns! Rio RJ Brasil
You are doing very nice things Congratulations to friends
Really cool project, you could totally turn it into an welding rotary table too!
Excellent. I have the same Arduino set up ( TB6600 rather TB 6560 stepper driver ) for my sherline rotary table. Just waiting to tidy everything up and make it look respectable.
Wow, we are going to another level.
love your vids...no prattle and just get on with it ! perfect keep it up..........we are learning !
Excellent work. I don't know why people don't do this more. Indexes like in this video, rotary tables, etc are perfect for stepper motor control. The components are cheap and the microcode is readily available on the Internet, like for free.
JRoque250 do it and sell them. its that easy. the problem is its all too diy. for it t be mass consuption it should an all in one solution, something that already comes with alm pre assembled and the board should be custom to be cheaper and better. Its not hard to do but no ome at the indexers factories seems.to care to do it.
Impressive, I know very little about CNC, but I think I'm about to learn very quickly. Thank you for posting
I am dipping my toes into CNC at the moment. New project on the way.
This circuit specifically is not an arduino with GRBL, meaning CNC, is just an arduino with a little program that you basically put in the arduino, buy the screen with puish buttons and works, So, is easier than uploading gcode for cnc. You can just use it. Try buying the electronics, is very easy yo implement. Cheers!
Super !
Beau montage !
Et vive Arduino !!!
Georges
Great !
Beautiful editing!
And Vive Arduino !!!
Georges
dude this is next level stuff !
Hi top job and love the videos any chance of a video on your tapping machine from the little I could see it seems impressive Thanks again.
They say you can't teach an old dog new tricks but what do they know. Lovely videos as always. Many thanks, very interesting and motivating.
P.s 1 I can't wait to see a video with the new tool mounted on your Raglan miller.
P.s 2 I'm looking for a Dore Westbury MK2, in case you know anyone having one for sale.
do you have a direct link to the software I'm having a heck of a time finding it and I went through all the digital machinist
Nice work!
You are my hero, dude!
That's just awesome. !!!
Excellent Work
Awesome! By professional trade i must tell you the motor takes the male plug and the controler the female.
Will you make a dust cover for belt and pulleys?
may be accurate enough for robot arm not as good for dividing cutting gear on milling machine but I am wandering how industrial digital divider was constructed
Nice job as usual, you could have been a surgeon! I'll bet ten percent (maybe more) of your subscribers would like to do that build. Is it a purchasable kit?
Very nicely done. I must build this. I have a small dividing head, but this has many useful features. Thanks
Repeatability? If you command it to make, say 10 full 360 degree turns does it appear to return to same place? I am thinking of using this design for an end mill sharpener.
I have tried it with the 36 hole index plate. I set the controller to index 36 places and yes every hole lined up.
Inspirational.
That four pin connector is back to front the pins should be on the stepper and the socket should be on the live supply i.e. The controller .
Yes I know it's only low voltage but short those pins and its goodby to the stepper driver , I have modded a RT. for the same job and for use as a 4th axis both of these run at 50vdc
You need a free plug and a fixed socket
By the way I do enjoy your videos and provide a good resource for the beginner to model engineering
love this.
Hi. I made a similar rotary indexer for a small CNC project. I certainly don't have the skills you have to cast my own pulleys, so it wasn't elaborate. One thing I discovered the hard way (and might help you avoid heartache down the line) is that relying on the stepper motor to travel exactly to the same location each time with a direct-drive setup is nearly impossible. It will always be a fractional radian off. We discovered that this was because if you didn't hold power on the stepper motor after it moved..the motor would (imperceptibly) settle back in between it's stators. It was maddening trying to figure this out at first, but made sense once we had a good think on it. The motor would get unbelievably hot if we held power to it during operation so we went with a planetary gear drive and a stepper motor. The planetary was directly driven by the stepper and allowed us extreme precision over radial movement. Plus the gearbox would not allow the motor to relax in between it's stators once power was dropped from the motor. Anyway..hope that helps you in some way if you run into this problem! Thank you for your videos.
Thanks for the tip.
Sounds like you need a servo with an encoder instead of a stepper motor to solve this issue. But the planetary gear idea sounds interesting.
It was also 11 years ago. It works and is still working. :-)
Hallo Gents. we have a CNC CO2 laser cutting machine that use the same stepper motort-pully-belt setup. Between any steps the motors are always powered. not sure if the current is lowered/limited to reduce overbheating but they don get rather hot. This method ensures quite accurate locating and movements. I have stoped and restarted project many times over and it will cut exaclty the same pattern over the last cut every single time without deviations. Just thought its worth mentioning. ☺👍 fantastic job by the way! How strong/hard is the aluminum when cast in this way?
To some extent it depends on the alloy you use. I always cast with scrap so it is mystery alloy. When I think I need higher strength I use automotive cast. I also use a commercial degassing chemical. Extrusions seem to be the softest/weakest but still strong enough for this use. I started doing casting because of this channel. Very good. Turns out to be easier than I had expected.
No worries about the open loop?
nice job.
good jobs... Thanks
Neatly done. Regards
Nice build. Did you have to reconfigure the code for the number of teeth on your pulleys? Where did you get the belt and drive pulley?
Yes, you just need to alter a couple of numbers in the arduino sketch to suit any pulley ratio. Belt came from Ebay, I already had the small pulley.
Excellent!
great tool
मला आवश्यक्ता आहे या वर्कहेडची कृपया हे मिळवण्यासाठी काय करावे लागेल
Very nice.
Now, you will have to start a new series : Programming Arduino at home...
I have an Arduino© starter kit I should try this.
Thanks
Hi there, Excellent indexer I was wondering what you would charge for a kit like this ready to run please as I would be interested ? Please let me know as I want to use this to cut gears.
Thank you.👌👍
Sorry I do not want to make another.
very good
The best!
It's probably not too critical, but I'll recommend heat-shrink tubing over each terminal/wire if you ever need to dig back into that motor connector. Great vid, btw!
Those connectors usually come with a piece of tube that goes around all of the terminals like his piece of tape, the design of the connector means there is no chance of shorts between the terminals only with the case so heatshrink doesn't do much especially as the wires are strain relieved by the rear clamp.
+littlestworkshop I can also verify the connectors are fairly well separated from each other. The insulating tubing included with each often does not fall out when disassembling the connector, so it is possible that he and other don't even realize it is in there.
Dear friend, where ι buy this Module to do the same with me and give it motion to a stepper motor thanks ..
Under the video there is a list of all the parts used and links to the products.
I was looking on the website where the information for the set up of the arduino... and couldn't find the link to download the program that need to be loaded for this particular indexer!! would you care to comment about this aspect! may you have an idea where to go and get it? thanks in advance.
Follow the link I gave in the description below my video. liming.org/millindex/ It will take you to a web page owned by the author of the sketch. Click on the link to the digital machinist site Beneath the winter 2013 picture of the magazine cover click on DM8.4 Liming and you will get a download of the sketch.
Its v2.3 that you want.
What ratio does the 55 tooth pulley provide and how mant teeth are on the motor pulley? As I understand it the ratio has an effect on the programming of the Arduino in order to arrive at the correct number of steps....
You can use whatever ratio you want. There are lines in the Arduino sketch where you enter your ratio. I used 72 teeth for the large pulley as it can be easily cut on the indexer with the 36 hole plate. The small pulley has 10 teeth so ratio is 7.2:1.
Subscribed !
What size gear is on the stepper motor? Nice build.
10 teeth
I was wondering how many division's can you get with the NEMA stepper setup I have the 5c collet spin indexer as well I want to mod it too get anything in the 360 degrees minits and seconds as well
You can use micro steps to increase the number of steps and a higher reduction drive would increase the accuracy.
thanks I will look into this it seems like a grate idea .
Does the NEMA stepper-motor have enough torque to hold the index plate in place ?
Yes it does.
Anyway, as far as I understand, the locking bolt is still in place, so it's possible to lock the plate firmly if needed.
It's a big nema so it should have loads of holding torque. Depends if the driver can give it enough power.
+Sirus The reason I asked is because those wires don't particularly look like they can carry much current.
The holding torque of the motor is multiplied by the reduction ration of the pullies.
Здравствуйте! Аппарат получился хороший. Где можно скачать прошивку на устройстве оно, я хочу сделать? Ссылка с одной стороны не работает, он говорит, что сайт заблокирован. Спасибо!
Use the link on the description below the video. I have just checked it and it works fine for me.
Link opens and when the press Digital Machinist website. A window appears (This site has been blocked by the network administrator)
What to do?
myfordboy, what pitch belt have you used? and total reduction? I'd guess 30:1? These are questions a beginner in CNC will need answers to if looking to emulate your build. Also it appears to be NEMA 23 stepper correct? A very versatile handy build thank you.
The video was not meant to be a full instruction how to make it but to show what i have done.
The pitch of the belt is 0.2" and the ratio is 7.2:1 Stepper is Nema 23 but that just denotes the frame size. Different specifications are available.
Ah I see, then that would make sense. Thank You Cheers.
hello. good work. where are you buy the belt ?
thanks.
Ebay
Cool.
Any plans to make the stop controlled?
You mean the spindle lock? The stepper should hold without the lock but if i need it I can manual use the screw lock. It's not a tool that is used all the time.
myfordboy stepper had no enough power to hold a spindle.
I am building a similar Arduino controller for use with a small rotary table for gear cutting. I notice that you don't use a rotary encoder for feedback to insure that the stepper motor did not miss a step. Was that a concern? Have you ever had a positioning problem?
Thanks,
Jack
I am only using an Arduino sketch written by someone else who is credited in the video description. I am not clever enough to write my own. Positioning does not seem to be a problem.
Yes positioning was my concern. I was thinking of adding an encoder for feedback but maybe I don't need it (if that were the case it would simplify things). Thanks for your response.
Jack
I have another question for you. I'm not a machinist; I'm a retired software engineer and machining is a hobby. If I use a stepper motor for driving my rotary table I will never be able to come up with an even number of steps for every possible number of teeth in a gear (for example, if for some reason I wanted to make a 7 tooth gear).
My question is, if I use my rotary table for making gears, what is an acceptable angular tolerance for a general purpose gear?
Jack
I would not use the rotary table divisions for a gear. if you add a dividing attachment the error is reduced by 90 times if this is the ratio of the gearing. Same with this Arduino one, I f you have a larger reduction any error would be very small.
Your part 1 video pulls up as a windmill project.
No it does't
You can call this gadget your 15 minutes of frame. Because every step should net you 15 minutes of arc.
Ha ha! very good.
wiring schematic diagram ??
It's possible to used this motor on a Simracing wheel project ?
Nicolas Mahieu I am not familiar with what is needed for sim racing.
It you need a motor that can be indexed, yes it is.
Does it harm a NEMA stepper-motor to rotate it by hand?
No. In fact you can use it as a generator.
What type of sensor is used please give answer....
There is no " sensor", All the parts used are listed below the video.
which stepper motor did you use? Thanks
Nema 23 www.ebay.co.uk/itm/Nema-23-Stepper-Motor-1-9Nm-2-8A-4-wires-6-35mm-Shaft-DIY-CNC-Mill-Lathe-Router-/121684006516?hash=item1c54ee9674
Cool
Как всегда отличное видео. Где можно найти скетч на ардуино?
The details are in my description under the video.
myfordboy thanks
myfordboy thanks
👍👍👍
hi
i want to ask
if can replace the lathe motor to stepper motor ?
and what size i can used for that ?
thanks
No a steeper is not suitable as a lathe motor. You need a more powerful and faster motor.
thank you v much
what yours Suggestion for Hobby lathe
My Myford has a 1/3HP 1400rpm induction motor.
myfordboy thanks for yours advice
I appreciate that's
Have a great day
You can get steppers with that much power (and more), but they are extremely expensive. A bog-standard induction motor will serve you much better.
do you have any part numbers for the boards you used
Arduino and LCD shield goo.gl/GAwyP6
motor driver goo.gl/NhklOv
thanks. now my only question is the box. when i hit the link for the box to put the driver and display in. they have no holes in them. is there some push button switches that go in the holes i have to cut in the box?
i want to do this for the g0758 mill to raise and lower the head up and down.
You have to cut your own holes. You have to select the size you need.
I have added the links to other parts I used in the description below the video.
+myfordboy how many wats does that soldering iron have!
I think its 30. The element went last week and i had to throw it away.
AND THE SOLDER WHAT DIAMETTER WAS IT?
cPUSE I HATE A 60 WAT SOLDERING IRON AND STILL IT STRUGELS TO MELT 1.2 MM ROSIN CORE SOLDER 60/40
That damn tiny hardware!
How did you determine what size to make the Pulley?
This is a good question, maybe someone can advise here.
The pulley has 72 teeth, the pitch of the belt is 0.2" so the circumference of the pulley should be 72 x 0.2 =14.4. Divide by pi to get the diameter and the answer is 4.583, which is what i made it. However it turns out to be be too big and i had to reduce the diameter to 4.555 to get the belt to fit.
Anyone? Anyone?
Well thats a good starting point. I have the same indexer. Would like to do the same mod. Now I just have to find where to download the Arduino sketch. The Gary Liming blog is leading me down a rabbit hole. Hoping I'll find it somewhere in there.
Follow the link I gave in the description below my video. liming.org/millindex/ It will take you to a web page owned by the author of the sketch. Click on the link to the digital machinist site Beneath the winter 2013 picture of the magazine cover click on DM8.4 Liming and you will get a download of the sketch.
Its v2.3 that you want.
myfordboy Apparently the belt/pulley has two diameters - top of tooth and bottom of tooth. It seems that calculation and/or manufacturers tables are required to find the correct diameter. I speak from a position of complete ignorance :)
Found it! Thanks much!
Interesting, but the code to put in Arduino where do I find it?
The link to the code is shown in the description under the video liming.org/millindex/ Email me if you have problems finding it.
Found project reference 8.4. OK !!
myfordboy n
Well spin indexers are not really cheap enough to justify home brew for what you can buy from China these days. Until you get into 5” and larger or swiveling models where the expense significantly gets higher it’s hard to justify as cool as it is to make ones own. My 4th axis indexer weighs 60lbs plus. My 5c spin indexer weighs 8-10lbs at best. Rigidity is definitely going to be different. I spent another $160 for my 5” and it sits horizontal, vertical, or any degree between and cane with a tailstock made of near solid cast ductile iron. And I’m cheap.
Good video, but a lot of noise on the background
muito bom
Nice project, but why not build a bearing block from scratch instead of modifying a nice indexer? Also, those wires coming out of the stepper are still not going to like being exposed like that.
That indexer costs less than a couple of decent quality pillow block bearings.
I was suggesting that he manufacture those, given his propensity for such things
He already had the indexer (which is a cheap chinese thing) and it can still be used manually when required. There is nothing wrong with what he has done with the cables, they are protected from wear and properly strain relieved.
Will it have a Brake?
NuttyforNissan if the belt is stiff enough it shouldnt need one, that srepper motor should be more than strong enough.
indexers usually have locks.
Laharl Krichevskoy Indexer has both brake and lockin pin. Even cleated belt not solid enough to do machine work on a gear. This project just speeds process.
Doc Pedersen
the motor has far higher resolution than the indexing plate does. Each motor step is 15 minutes of arc. Which makes for 1,400 discrete stops in 360 degrees. So there's that.
The locking screw on the top of the indexer can still be used if necessary.
Here is a link to an arduino based gear hobbing fixture that you may find interesting. th-cam.com/video/fMY8zUs3bZI/w-d-xo.html
I have not dealt with myself again Arduino..I have not dealt with myself again
I was going to listen to your video, then I remembered you don't talk.
Look I really don't want to criticize you you obviously have skill and an Innovative mind but to me you've taking the simplest of all accessories that are available to the home hobbyist and made the over-complicated. Turning this crank is so easy and setting the pin I don't see where automating this is going to give you nothing but headaches
I think you are missing the point.
How would you index say 95 positions with the spin indexer? You can only index numbers that divide into 360. It's easy to miscount holes even with a proper geared dividing head, been there, done that. With this device you can index any number of positions at the touch of a button.
myfordboy I like your videos I think you're a very talented guy but I'm not sure I agree with this approach If This Were Me I would make a rotary tool with a very high Precision bearing and not use this Chinese made spin indexer. I understand you have unlimited positions now only limited by the . 5 Micron pitch of the stepper motor. You're probably a lot more on the ball with regards to this topic than I am so perhaps I am missing something else. It doesn't seem like the spin indexer itself has any use whatsoever in this model other than a means to hold a 5c collet. Perhaps I'm dead wrong I'll watch the video again
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