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  1. #25
    Registered wireb's Avatar
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    Spent most of this weekend building up a PC for EMC2 and getting the drivers matched to the motors. Since I had everything up and running dragged the cable over into my shop and hooked up the X to see some initial movement.


    [nomedia="http://www.youtube.com/watch?v=YR8uQhA_15o"]YouTube - Junkbox 18x7x7 first movements[/nomedia]

    Next up make the sensor "flags" so I can button up the X axis and start mounting the Y and the table.

    Attached Thumbnails Attached Thumbnails junkbox 18x7x7-img_0207-jpg   junkbox 18x7x7-img_0208-jpg  


  2. #26
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    Forgot to attach the sensor drawing. Left flag is shaped weird due to lead screw nut bearing block is in the way.

    Attached Thumbnails Attached Thumbnails junkbox 18x7x7-x_sensors-jpg  


  3. #27
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    Fought a crashed hard drive most of last weekend so did not make much progress but did get the outline of the sensor flags machined out. Hopefully next weekend I can finish them up and get the final assembly on the X done.

    Attached Thumbnails Attached Thumbnails junkbox 18x7x7-img_0211-jpg   junkbox 18x7x7-img_0213-jpg  


  4. #28
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    Wow great looking machine! Can’t wait to see how your spindle performs.

    Eric



  5. #29
    Registered wireb's Avatar
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    Hopefully it will but there is a reason it is the last part I am going to build

    But before those issues set in I need to get the X, Y, Z mounted and wired. Then at least I can strap a dremal / rotozip to it and be useful if needed.



  6. #30
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    Are those steppers or servos? It was hard to tell.

    Eric



  7. #31
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    Standard 125oz-in 1.8 deg steppers (Parker Compumotor brand) I had gotten a matched set of Zeta drivers and motors so going to use those to start with. My experience with the little bit of playing on the X is there is plenty of force and holding torque. (I can lean on it and it still moves back and forth)



  8. #32
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    Got a little more done over the weekend and the X is all buttoned up for now. Currently working on mounting the wire ladder to the bottom of the X to Y adapter plate.

    Attached Thumbnails Attached Thumbnails junkbox 18x7x7-img_0255-jpg   junkbox 18x7x7-img_0256-jpg   junkbox 18x7x7-img_0258-jpg   junkbox 18x7x7-img_0259-jpg  

    junkbox 18x7x7-img_0260-jpg   junkbox 18x7x7-img_0261-jpg  


  9. #33
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    Made some more progress the other weekend and got the Y bolted up to the X total skew end to end of the Y was less than a thou so happy about that.

    The X is weak side to side. With that big of a table mounted on it turned all the way out there is some obvious tip / rocking on the X slide. Note sure if I can tighten it up or not. But for what I want to do it may not matter.

    Attached Thumbnails Attached Thumbnails junkbox 18x7x7-img_0294-jpg   junkbox 18x7x7-img_0295-jpg   junkbox 18x7x7-img_0299-jpg   junkbox 18x7x7-img_0300-jpg  

    junkbox 18x7x7-img_0301-jpg   junkbox 18x7x7-img_0302-jpg  


  10. #34
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    Well winter has returned to MN so time to move back to basement projects.

    Started dusting off the CNC mill parts (Drywalled the basement over the summer so there is dust everywhere....) and got some work done on the controller plate and EPO box.

    2 SSR are the base of the EPO box. SSR #1 (right) is a 25A unit (fused at 15A) and supply power to the X, Y, Z controllers, duplex outlet (Will plug my motor / extruder power supply in here when I build it), and supplies power to SSR #2. SSR #2 is a 10 A unit (fused at 5A) and just supplies power to the A controller so I can turn off power to it when the A axis is removed. Worst case my controllers will draw 4A but with the stepper motors I have the max draw per the manual is 1.2A so no issue running them all off one power cord.

    The big red / black umbilical will get cut down to the last green zip tie (where it first touches the floor) and terminated in a 50 pin D shell to connect to the interface card. For the life of me I cannot find where I put my 50 pin D shells so had to order a new one . So the rat nest will live on for a bit until I get my parts order in.

    On the table end of the project I am stuck until I figure out what I am doing with the way covers. Once I have them figured out I can finish mounting the table and Y axis cable tray.

    Attached Thumbnails Attached Thumbnails junkbox 18x7x7-img_1127-jpg   junkbox 18x7x7-img_1138-jpg   junkbox 18x7x7-img_1139-jpg   junkbox 18x7x7-img_1144-jpg  



  11. #35
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    Got a little more done this weekend. DB50 is wired up and the plate is installed in the cabinet. Also picked up some plumbing parts to build my display swing arm for the touch screen.

    Attached Thumbnails Attached Thumbnails junkbox 18x7x7-img_1148-jpg   junkbox 18x7x7-img_1149-jpg   junkbox 18x7x7-img_1150-jpg  


  12. #36
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    Merry Xmas and happy new years!

    Well got some work done over break and got my touchscreen and keyboard arm built and mounted. Also hooked up the PC and got VNC and the touchscreen working. Currently running the latency test in EMC2.

    Next up need to finish my wiring plan and start work on the breakout card design. Originally was going to run the entire card off the PC power supply. New plan is to run the PC side off the PC power supply then opto-isso the machine side and run off a separate 12V / 5V supply (have a small stash of old wall warts and I know I have a few combo supplies that end in a DIN5 in there I can use) I think I am going to design the logic and buffers to handle a 2MHz max signal rate (max my drivers can take) even though the PC looks to have a 35kHz max step rate...

    Attached Thumbnails Attached Thumbnails junkbox 18x7x7-img_1151-jpg   junkbox 18x7x7-img_1156-jpg   junkbox 18x7x7-img_1159-jpg   junkbox 18x7x7-img_1162-jpg  

    junkbox 18x7x7-img_1169-jpg   junkbox 18x7x7-img_1170-jpg   junkbox 18x7x7-img_1171-jpg   junkbox 18x7x7-img_1168-jpg  



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