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Thread: DIY- CNC Embroidery Machine

  1. #801
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    Default Re: DIY- CNC Embroidery Machine

    Well, you have already this servo motor from Melco machine. You said, you have the drive too. This would be the opportunity to make an experiment with this motor. If you're afraid to destroy it , you can buy cheap stepper motor NEMA 17 and TB6600 drive.
    Here you can see how it looks
    CNC Nema17 Hybrid Stepper Motor DC12V 2 Phase 4000G cm 4 Lead 1 8 Degree US SHIP | eBay
    Single Axis TB6600 DC12 45V Two Phase Hybrid Stepper Motor Driver Controller | eBay
    If you like the drive with the case ( it's the same TB6600) then:
    Single Axis 4A TB6600 Stepper Motor Driver Controller 9 42V Micro Step CNC | eBay
    You're gonna need DC power supply too. Maybe you have it already. That drive and motor can run from 12-36 VDC ,

    Once, you connect everything to MACH3, you're gonna explore CNC
    Besides this, the BOB you have is good to connect diverse stepper or servo motors ( and some other things eg. switches, relays etc). Imagine the parallel port cable for PC. It has usually up to 25 wires. The BOB is going to brake all of them out and lead them where they belong. You're gonna send some data using only (probably) three wires for each motor .This way using BOB, you're gonna simple connect your motor to the PC.



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    Quote Originally Posted by kiefer View Post
    Well, you have already this servo motor from Melco machine. You said, you have the drive too. This would be the opportunity to make an experiment with this motor. If you're afraid to destroy it , you can buy cheap stepper motor NEMA 17 and TB6600 drive.
    Here you can see how it looks
    CNC Nema17 Hybrid Stepper Motor DC12V 2 Phase 4000G cm 4 Lead 1 8 Degree US SHIP | eBay
    Single Axis TB6600 DC12 45V Two Phase Hybrid Stepper Motor Driver Controller | eBay
    If you like the drive with the case ( it's the same TB6600) then:
    Single Axis 4A TB6600 Stepper Motor Driver Controller 9 42V Micro Step CNC | eBay
    You're gonna need DC power supply too. Maybe you have it already. That drive and motor can run from 12-36 VDC ,

    Once, you connect everything to MACH3, you're gonna explore CNC
    Besides this, the BOB you have is good to connect diverse stepper or servo motors ( and some other things eg. switches, relays etc). Imagine the parallel port cable for PC. It has usually up to 25 wires. The BOB is going to brake all of them out and lead them where they belong. You're gonna send some data using only (probably) three wires for each motor .This way using BOB, you're gonna simple connect your motor to the PC.
    All the research I have done shows clear instructions for connecting stepper motors but nothing for servo motors. Any advice? Do you know of any tutorials or videos? My X and Y motors have 6 wires.



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    Default Re: DIY- CNC Embroidery Machine

    Stepper drive is a universal drive for many different stepper motors. There is input for PULSE ans DIRECTION. If you connect these to the BOB - you're free to go. The stepper motor( if connected to the power) will rotate.
    The servo motor has (almost) always matching drive. It means, the motor has unique connector to connect it to the drive. To connect the drive to the BOB is similar procedure like a stepper drive. If the motor doesn't have the connector ( just the wires),
    then you have to find out which wire is for the power, encoder etc.( out of my experience - not easy job.) . Before you disconnect the motor from your machine, study the connection.



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    Default Re: DIY- CNC Embroidery Machine

    Quote Originally Posted by kiefer View Post
    Stepper drive is a universal drive for many different stepper motors. There is input for PULSE ans DIRECTION.....
    Also, there may be a minimum pulse width for the "Step" pulse and a given polarity.
    ... Before you disconnect the motor from your machine, study the connection.
    Taking good close-up pictures prior to disassembly can also help re-construction.



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    Default Re: DIY- CNC Embroidery Machine

    Here is the spec sheet I found for my encoders for X and Y motors...
    DIY- CNC Embroidery Machine-encoder-jpg



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    Default Re: DIY- CNC Embroidery Machine

    Please help me clarify...what type of driver will I need to use my servo motors?



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    Default Re: DIY- CNC Embroidery Machine

    First, I'm not specialist about this matter ( just self taught hobby machinist). I explained that every servo motor is paired to specific servo drive. If you have matching servo drive, this is the answer. Servo motor is very specific matter. I have to say - there is no shortcut.



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    Default Re: DIY- CNC Embroidery Machine

    One would need to separate the servo motors into their category of brushed and brushless, as often evidenced by the number of wires used to drive them.
    You would need some idea of the voltage and currents required to drive them to full capacity, without overloading them. It's the current that determines the torque. It's the motor tuning that becomes motor specific in the closed-loop driver..



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    Quote Originally Posted by kiefer View Post
    First, I'm not specialist about this matter ( just self taught hobby machinist). I explained that every servo motor is paired to specific servo drive. If you have matching servo drive, this is the answer. Servo motor is very specific matter. I have to say - there is no shortcut.
    So would I be better off buying new stepper motors and drivers to replace the servo motors? The servo driver seems to be integrated to the motherboard.


    Attached Thumbnails Attached Thumbnails DIY- CNC Embroidery Machine-screenshot_2016-05-06-07-25-53-1-a  


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    Default Re: DIY- CNC Embroidery Machine

    This doesn't look like a servo drive! You said that you have something like this:
    Melco EMC 6 Brushless DC Motor Speed Control Driver P N 34438502 | eBay
    On the picture above - this is a servo drive. Do you have three pieces like this? Who ever made a motor, they make matching servo drive. The same motor & drive might be used for many different applications.
    Like I said, it's not easy job to find out data about specific servo, but it is not impossible as well.
    You can use any stepper or servo for your machine, but you have to consider size and mounting brackets.



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    Quote Originally Posted by kiefer View Post
    This doesn't look like a servo drive! You said that you have something like this:
    Melco EMC 6 Brushless DC Motor Speed Control Driver P N 34438502 | eBay
    On the picture above - this is a servo drive. Do you have three pieces like this? Who ever made a motor, they make matching servo drive. The same motor & drive might be used for many different applications.
    Like I said, it's not easy job to find out data about specific servo, but it is not impossible as well.
    You can use any stepper or servo for your machine, but you have to consider size and mounting brackets.
    There is only 1 speed control drive and its for the z axis (needle motor)I think its because its a brushless motor.

    Here is a link to the XY controller for Melco emc6...this is definately in my machine connected to the main board.
    http://pages.ebay.com/link/?nav=item...023184&alt=web



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    Default Re: DIY- CNC Embroidery Machine

    Quote Originally Posted by kiefer View Post
    This doesn't look like a servo drive! You said that you have something like this:
    Melco EMC 6 Brushless DC Motor Speed Control Driver P N 34438502 | eBay
    On the picture above - this is a servo drive. Do you have three pieces like this? Who ever made a motor, they make matching servo drive. The same motor & drive might be used for many different applications.
    Like I said, it's not easy job to find out data about specific servo, but it is not impossible as well.
    You can use any stepper or servo for your machine, but you have to consider size and mounting brackets.
    Do you guys see any issues connecting this brushless driver to the BOB?


    Attached Thumbnails Attached Thumbnails DIY- CNC Embroidery Machine-20160506_223039-jpg  


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    Default Re: DIY- CNC Embroidery Machine

    Hello group, I want to build one also. Modern sewing machines use plastic gears and computer model for minimum material while design to last only a few years. Vintage full size Singers like model 15, 66, 201 not only last a lifetime but longer. Vintage domestic machines can handle wide range of threads. The Brother pe770 for around $600 are very finicky for type of thread. Also, I can get rebuilt Juki industrial machines self oiling for under 300 USD with new table and motor. One blog talked about the Juki designed for 24/7 operation for 12 years before replacement partly due to self oiling. The one video in this thread for unit in South America I've identified as using a modern knock-off of a Singer model 15 (these are made in China and the model 15) Model 15's have been widely copied throughout the world since their first mfg. over 100 years ago. I also saw a University project on the internet that used a 3/4 sized version of the model 66 which is the Singer model 99. So...it would be easy to buy a Brother pe770 but I would be very scared to become one of the people who turns it back into the factory for refurbishing. Many of the links I've found on the thread are either not functioning, incomplete, and/or not in English. Can anyone on the thread help me make a simple x-y embroidery machine that will take 5" X 7" hoops? I'd like to use it with an industrial straight stitch Juki machine or just as good a vintage Singer? I'm a retired Electronics Technician so have some of the background and with a little help would like to make this happen then put pictures and file downloads on the site. Very best regards from a newbie, Mike



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    Default Re: DIY- CNC Embroidery Machine

    Welcome to the this thread, ke6cvh. The current discussion is using a commercial embroidery machine but modified to use Mach3 and some program by khalid to generate g-code for the Mach 3 controller. The development of using a regular sewing machine has stalled mainly because no one has taken the time needed to "push the envelope" and the project was abandoned.
    One problem was that the speed (stitches per minute) was too low. Another member, kiefer I think suggested an alternate method that greatly improved the speed. So, far no other member has experimented further using a common sewing machine.
    Khalid was working on making a cheap servo motor controller to assure knowing the needle position so that the software could properly control the stitch lengths. Another aspect that khalid was working on was to control the motors using an Arduino platform so that a computer was not required. It was also assumed that a faster stitch speed could be achieved.
    Not all sewing machines are exactly the same so a solution for one machine may need to be altered for another machine.
    So, you are welcome to "pick up the torch" and see what can be accomplished. There are members here who may be of assistance but someone will need to do the "grunt" work.



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    Default Re: DIY- CNC Embroidery Machine

    hi koc62, Thanks for the reply and information. I did receive one reply via email from Hugo in Peru who built the machine using a Singer model 15. He has moved to more sophisticated software but I'm hoping to communicate with him about it. My thought is after looking at dedicated embroidery machines that are over $500 dollars and look to be mainly plastic that it would be worth my time to take a workhorse such as a Singer model 15, a modern knock off of one from China, or one of the zillion vintage Japanese knockoffs that were made and make the embroidery machine. I saw a project where someone used NEMA 17 motors. I'm assuming this would be the correct power motor to not spend excess money but get a strong/reliable system but please correct me if a smaller size motor would be appropriate. Wouldn't it be better to use an Arduino even better than that a Rasberry Pi? I see kits on Ebay. This is where some expertise can give me some recommended direction to go on the project. My goal would be to use something that could be almost universally repeated with commonly availabe kit parts. I see people hacking scanners but that does not seem to be the route. Best regards, Mike



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    Default Re: DIY- CNC Embroidery Machine

    I don't think that embroidery requires much needle power so plastic gears may just be suitable. If you were sewing jeans then yes a stronger machine is required. Since I haven't built an embroidery machine I don't have the experience to say that plastic gears are bad. But, yes, a normal Singer sewing machine should do just fine.
    The nema17 motors may be OK for driving the hoop as the hoop doesn't weigh much.

    The microprocessor power will be determined by what commands you require from it, and the memory usage. At this point it is too early to say. The suspicion is that an Arduino MEGA could do the job, but the desired feature will verify if my guess is incorrect. Someone just has to start small and work out the details as they go.
    I was working on using the existing 80 watt sewing machine motor, rather than replacing it with a DC servo motor. Some members here didn't like that approach. My main idea was to use as much of the original machine as possible before throwing other parts at it. An experimental approach was my starting position and it still needs further work to see if it should be abandoned. But summer days are here and other projects bumped this one for now.



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    Default Re: DIY- CNC Embroidery Machine

    Hi, You are correct that the plastic gears are suitable. However, they are designed to wear out and many times end up causing problems after some usage over a short time. I will be hoping to put embroidery into heavy material as I'd like to embroider pockets of heavy duty cargo shorts is my primary goal if successful and everything else will be "gravy" such as monograming stuff that the kids always misplace like hand towels that are constantly carried around. So for my application I'd like to use the semi-industrial vintage machines that are easily available for a song. We have 6 year old triplets (1 boy and 2 girls) so are constantly going through stuff that is normally not normal "wear and tear" so monograming would be nice as well. I've been researching how to make cargo shorts that are extreme duty. I didn't want to go off topic but another goal possibly more important than the embroidery machine is regarding a CNC pattern cutter that maybe should become a different thread. I purchased a 5' x 10' speedmonkey CNC plasma table with spindle option to change from plasma to router. There is a company in Germany that makes a vibrating cutter that will fit into a 43mm spindle but would also need a vacuum table and some type of bristles to allow that. I'm not sure if a lower power laser is more suitable of single pass cutting denim and if so how much power as CO2 is going to be very bulky. I can move that discussion to a new thread if there is interest on that. Best regards, Mike



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    Default Re: DIY- CNC Embroidery Machine

    Hello group, My thought for a teamwork approach is to come up with an x-y embroidery hoop control that can be added to a simple straight stitch sewing machine that will allow the benefits of not relying on proprietary stovepipe software but instead allow mach3 (or mach4) to control a multi-axis stepper kit that is commonly available and motor. Modifications to sewing machine should be able to be done easily. This "baby step" I feel should follow the KISS principle in that parts should be available, a list of where to get from suppliers then freely available software.

    After completion of that goal then IMHO should be the "bells and whistles" for expansion or later improvement. Later improvement could follow some of the features of commercial embroidery machines such as thread outage detection and ability to go back in program to redo missed stitches then resume. Also I saw one persons design goal was a light to indicate when color changes are to take place.

    Another future goal may be to take advantage of a 5 axis kit to allow multiple sewing heads which will make a DIY version of multiple color/needle capability. The width is not limited so much on a CNC axis so multiple heads are a real possibility. I've already seen one project where two sewing machines in parallel were run to get two projects done off the same controller. This should be feasable at a future stage. Lastly, I saw one post where discussion of lengthening the throat could be done.

    Again, that could follow a simple KISS project completion that allows beginners to get the basic functionality and then later expand to more functions that are currently only available with machines in the 6k-12k range. Baby steps are my recommendation with guaranteed success in stages.

    Best regards,
    Mike



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    Default Re: DIY- CNC Embroidery Machine

    Another concern may arise as to who would use our contraption? If you want someone other than yourself to do the embroidery then what preliminary setup would they put up with and if it requires technical knowledge to understand the process..
    When my wife started getting interested in embroidery she bought a low-end sewing/embroidery machine and started with some free embroidery designs that created way too many small threads that had to be trimmed (i.e cut with a scissor). It was enough frustration to realize that embroidery was not for her, unless the machine would also cut the thread when starting another pattern of the same colour. Another issue she experienced was frequent thread breaking, thus having to "baby sit" the process even more. Eventually, in order to continue an embroidery hobby, she bought a "higher-end" model that took care of most, if not all, her frustration issues for a hobby version of machine.
    It is one thing to create a proof of concept unit (the fun part) but another to make a practical, reliable working unit that someone can reasonably enjoy using. A low cost kit may work for many, until someone wants it even cheaper.



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    Default Re: DIY- CNC Embroidery Machine

    Hi koc62, Thanks and I was also pondering the automatic thread cutting portion. To cover an automatic thread breakage sensing I wonder if a roller that has a V groove in it would allow the thread to be looped one time around it and not causing any real extra resistance. Maybe an optical encoder type scheme would be on the roller's side and when the wheel stopped moving the program would know the thread is no longer causing it to move either because machine is paused/stopped or thread is broken. For the bobbin portion it would be more difficult to sense (more on that portion later). For the automatic thread cutter portion that required a button to be pushed they came along with the first touch and sew units it seems which also was after the vintage singers that were built like tanks. Here is a link from a 1959 patent where his device, no. 10 in the drawing, could be added to a conventional machine of that day. If there was a signal from the program that initiated an electromechanical relay or solenoid type device I wonder if the function could then be performed by adding to the existing feet and made available for purchase? For sensing the bobbin I started to wonder about the old VS, vibrating shuttle, machines and if it would be possible to feed from an external spool into the VS or if there could be some type of encoding on the bobbin with an optical sensor added which may be the best route. Here is the link for the 1959 patent for thought. I believe if we add the automatic cutter and a thread breakage sensing as a baseline it would be much more user friendly along with a light with switched buzzer capability for pauses to tell the home operator it is time to change colors or fix a broken thread. Along with that the ability to back up the program to start again where it had a problem may or may not be needed if the thread sensor was quick enough to pause the machine before the thread ran out at the needle or bobbin. Link below. Best regards, Mike Patent US2999473 - Automatic thread cutting attachment for sewing machines - Google Patents



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