My name is IH Han. I have been deep-diving in the CNC DIY world with great pleasure since retired from an automobile technology co.. Videos & communication will be shared regarding below in this channel.
Focus area - CNC machine design & fabrication - Servo motor & CNC control system - PLC related to CNC controller - Technical /mechanical animation
Short-term plans - Wrapping up the 1st CNC milling machine build (including ongoing video series sharing) - Upgrading (Re-building) this machine to an "Industrial version" - CNC related system build
Long-term plan - "Technology (fabrication) for every moving mechanism as my intention"
I will be trying to share all information as far as I can so as them to be enjoyable and helpful for you. Looking forward to your continous attention and support!
The spindle is not so powerful but having RPM 22,000 and the spindle sound in video is accelerated x1.4 in "manual spindle control" session in order for shortening total running time. From next I will pay some more heed to the speed in video! Thank you~
Thank you for your "basic" inquire (: Do you wanna know total required expenses or number of parts? Anyway~ Total material cost was paid about $2,000 - Frame (inc. steel plates Sq. steel tube) : $390 - Epoxy : $110 - Electrical parts : $800 - Drive units : $590 - Hardware : $70 - Others : $40 Total number of parts are about 150 inc. hardware classification according to the BOM.
Actually China made were used almost in my machine(; In case non-China made used expense beyond twice should have been paid even in my country I suppose!
2.3 : Mist cooling, tool changer : Not in my machine. Planning to install them in the next project of up-grading (rebulding with a "industrial version spindle and motor etc.) the existing machine Thank you~
Sorry, I have no cad model on this project as my cad ability was not enough covering whole machine design yet. FYI, animation is not from cad model but just computer animation.
I've been checking every day to see if you have a new video. This is one of the best DIY VMC builds i've seen on RU-vid. I can't think of anything i would do differently, keep up the great work. I'm looking at doing a CNC conversion of a mill i have at work and this infomation is very helpful.
Thank you! I am so delighted with your comment. You must be a big supporter for me I am sure! As a next project, I am planning to rebuild my machine for up-grading to an "industrial version" with new spindle, motor, controller replaced and frame assembly reinforced a lot etc. Keep watching that process please~
2 Gas springs on both side are giving reaction force (120N x 2=240N) to the spindle head to balance it's weight 23Kg (about 240N). They make spindle head unit move freely against gravity. You can see the scheme and calculation of it in video at 24:41
@@cncforall12it's a great idea. Would there not be extra load out on the stepper motor as its working against the compressed gas? Is there any reason why you didn't opt for a counter weight instead? Thanks for documenting your work, great job 👍
Appreciate your watching, subscribing! I think there will be no limitation in the size of the machine. Up to big size of the industrial milling machine or machine center could be made with this process! For your reference, I am planning to up-grade my machine as a next project in switching current spindle & motor unit (2.2 Kw / 23Kg sum) to heavy-duty spindle & industrial type servo motor (3.8 Kw / total about 50Kg sum) with extra frames and reinforcements added in column. Current axis strokes (400 / 220 / 262 x / y / z-axis) will be also increased to 410 / 247 / 382. Expect to watch that process~
@@3dp_edc Sorry. As I have just started this project first time, I have no website yet. I have plan of setting up soon. If you have got something to communicate with me, use my e mail, hvioih01@gmail.com. Thanks~
Your question is not perfect clear but let me give my comments. Adopting steel tubes (tank steel?!) cut by several pieces and assembled by bolting has couple of reasons. First, pieces of steel tubes could be handled by hand. Second, combination of tubes could make future design updates enable by adding additional tubes and reinforcements as design demand. Actually as they are made at home (workshop) not in plant, one piece of bulk frame could not be made. This would be a basic reason actually. Reason of adopting stepper motor is that I didn't have enough technical knowledge for the servo motors in CNC machine at that time. But I am on preparing upgrade my machine with servo motors. Related information will be uploaded in order. Below, I copied portion of explanation comment of "Part#1, Frame build" already uploaded in RU-vid. Please refer to it. Thank you~ 1. Design contents of the Frame 1) Overall dimension : 436 X 570 x 830 (W x L x H) ** Machine drive unit stroke : 400 / 220 / 262 (x / y / z axis) 2) Law material : Steel tube 100 x 100, thickness 2.0 3) End plates (Th.8.0) with tap nuts or Closing plates (Th.1.6) for both end of tubes 4) Nut plates (Th.5.0 or 8.0) inside of tube for fixing hang-on parts 2. "Bricklaying" ("Lego brick masonry") concept Each Frame assembly (Base, Column) has mainly 4 sets of frame. 2 Main frames each side and 2 Spacer frames in between them with 130mm long bolts for connection. * Total 64 bolts are used for entire Frame assembly. * Every frames are filled with Epoxy concrete (w/gravel and sand) inside. 1) Merits - Frames avoided heavy metal work (casting, milling etc.) in parts fabricating - Lower weight, so as to be handled by hand, without help of crane. * Highest weight of Column 9.6Kg in Frames - Easy future design change (upgrade, rebuild for enhancing the capacity) by adding frames and reinforcements as needed. 2) Risk - Difficulties of dimensional accuracy control of the assembly with this concept, several times accuracy check and adjusting had been done through the frame building to final assembling of driving parts (Linear block, ball screw etc.)
No. My machine was designed by manual as my CAD skill is not enough to cover the whole machine design. Animations in video are just the animation I drew!
Sorry for the late response ! Appreciate your thankful comment but answering to your question was not easy(; Actually as I am not a professional, in order to get needed information I was using RU-vid and Google. User manuals and electrical circuits for CNC controller in Google was userful in building my machine~
Sorry for the late reply! Chain with Inside dimension 7x15 HxW and bending radius R15 was applied in-between the vertical gap 50mm of y-Base plate and x-axis unit brace plate . As only two wires (one is the x-axis motor shield wire Dia 5.2, the other is the limit switch wire D 4.0) are went through the chain, area capacity was no problem. But as the chain size was so small, it sometimes went off the route due it's small distortion~
Hello ~ First, appreciate your liking my project! But sorry I'v got no electric data to be shared - I have only manual drawings for my machine. By the way, I have tried to include whole the design contents and processes as far I can in my videos, so I believe you can get design concept enough so as you to make similar machine as mine from my videos. When you need some more detail information, please let me know. Thank you.
z-axis : stepper motor NEMA34 / 12Nm y-axis : NEMA34 / 8.5Nm x-axis : NEMA24 / 4.0Nm ** NEMA34 / 8.5Nm for all 3 axes would be the optimal solution in my machine I think. ** There was a little worrying about the small size of x motor as it was decided to be packaged in between x-base plate and work plate. It is running well now but feels a little low power, would have been better with 12Nm. ** Tell me which component you would like to know more?
I thought wrong that it is an appendix (just collection of videos for detail) so only video is enough, no sound is needed. But it seems awkward actually! Sorry for giving inconvenience~
Video editing skill is getting better and easier(:. By the way, interesting! the concept of yours and mine are so similar (e.g. frames made from cutting square steel tubes etc.) even though we didn't have any talk before designing~ And the level of completion of yours is much higher than mine (Face milling, grinding the hang-on item mating area on frames). So, I suppose we can share further technical dialog some more. Thanks~
I'v learned SPM=Special purpose machine from you and then Google(:. Thank you. My machine is not very special but the frames which was uploaded in part#1 video would be something special I think. It has several part frames and they are combined mainly by bolts so that each parts could be handled by hand not by crane at home and the total assembly could be easy to be design updated by modifying the parts or adding extra parts. By the way, are you asking more upload part to part? Total 6 videos already uploaded and next ones to be. I'v been trying to include every part to parts as far as I can. You can refer to them. Thanks~
@@cncforall12 sir am very interested to you are machine building video great and you completed this session and in future you will build spm for me learning sir now am going to interview machine building and automation you are video very helpful full thank you 🙏
I forgot, was negligent that point when painting them. Should not be good for rigidity but also accuracy. Paint will be removed on the spindle mating surface. Thank you
Suppose you mean too much gravel and sand ratio compared to epoxy?! I had altered it at that time and with the ratio I selected I remember reasonable "viscosity" for filling and expected it to give better damping performance (esp. for low frequency) with that epoxy granite not only for providing stiffness of the frames. Will recheck it in next building with your thanks opinion.
@@cncforall12 mineral casting is not simple for building metalworking machines. measurements show different value at lifetime, it change geometry if used wrong proportion and had no heating process
