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IndustryArena Forum > CNC Electronics > Granite Devices > Videos of servos/steppers in action
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  1. #1
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    Videos of servos/steppers in action

    This is a thread where everyone is free to post their videos showing machines controlled by VSD drives in action. Here is couple from me:

    ---------

    This video demostrates VSD-E drives drives controlling a laser diode characterization instrument.

    The video demostrates VSD-E's automatic homing function at power-up. While doing homing motion to left, drive gently detects mechanical stop of axis (no mechanical limit switches are needed). After axis end has been reached, drive continues to opposing direction and searches encoder index pulse for most precise homing.

    The machine has 2 axis, both in same direction and stacked. The upper linear stage has short travel and higher mechanical precision for microscope camera movement. The lower stage (long travel) has a 150W BLDC servo motor and upper stage has a small 10W DC servo.

    [ame="http://www.youtube.com/watch?v=pGnR1M4GH5Q"]YouTube - Servo axis homing with VSD-E drive[/ame]

    ---------

    This is same machine as above but this video shows some operation and jogging of machine from PC.

    All motion control (accel & decel ramps, velocity control, torque limiting, axis travel limiting) are done internally in VSD drives. PC sends only simple move commands to drives thru USB bus.

    [ame="http://www.youtube.com/watch?v=jrLgFcVvx2U"]YouTube - Servo motor control with VSD-E[/ame]

    Comments & new videos are greatly appreciated

  2. #2
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    Smile hello

    Quote Originally Posted by Xerxes View Post
    This is a thread where everyone is free to post their videos showing machines controlled by VSD drives in action. Here is couple from me:

    ---------

    This video demostrates VSD-E drives drives controlling a laser diode characterization instrument.

    The video demostrates VSD-E's automatic homing function at power-up. While doing homing motion to left, drive gently detects mechanical stop of axis (no mechanical limit switches are needed). After axis end has been reached, drive continues to opposing direction and searches encoder index pulse for most precise homing.

    The machine has 2 axis, both in same direction and stacked. The upper linear stage has short travel and higher mechanical precision for microscope camera movement. The lower stage (long travel) has a 150W BLDC servo motor and upper stage has a small 10W DC servo.

    YouTube - Servo axis homing with VSD-E drive

    ---------

    This is same machine as above but this video shows some operation and jogging of machine from PC.

    All motion control (accel & decel ramps, velocity control, torque limiting, axis travel limiting) are done internally in VSD drives. PC sends only simple move commands to drives thru USB bus.

    YouTube - Servo motor control with VSD-E

    Comments & new videos are greatly appreciated
    I contact you for your VSD -E drive
    I make a mail in this week to ask you informations before buy it
    I think it's great drives :-)
    I want to install a Smooth Stepper
    I contact you on the week because it's not easy for me to write in english, I need a little time :-)
    I have a workshop in FRANCE, i make parts bikes with CNC Mill but I want to use servo motors for speed
    Regards
    François CHARLOT
    my mail : CFrancoischarlot@aol.com

  3. #3
    Nice Idea, I tried a Youtube search a couple of weeks ago while I was researching your drives, it nice to see them working.

  4. #4
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    Here is another one. This is a video showing fast 3D CNC milling. The servo drives used in this machine are our older drive models (VSD-A's).

    The video has been recorded by one of our customers and has been published with his permission.

    [ame="http://www.youtube.com/watch?v=fHdyy9ylLNE"]YouTube - CNC mill with VSD-A drives[/ame]

  5. #5
    Sorry please delete this post wrong topic.

  6. #6
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    Here is a new one. It shows a linear servo motor in action:

    [ame="http://www.youtube.com/watch?v=BhcZBr38Kmc"]YouTube - Linear servo motor[/ame]

  7. #7
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    Here's a short clip of the first cut with this machine, running VSD-XE drives (80Vdc version).

    [ame="http://www.youtube.com/watch?v=Isg5vljnYug"]YouTube- First cut.AVI[/ame]

    Sorry it's not more exciting. The cutter is definitely not for plastics, being 4 flute and coated - but does an ok job except for the very tip leaving a bit of a mess... I'll work on something better

    Best regards,

    Jason
    Attached Thumbnails Attached Thumbnails First cut.JPG  

  8. #8
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    Nice videos!

    That linear servo is amazing! It'll probably be another 10 years before we can take our pick of linear servos on ebay (from decommissioned equipment). Unless new prices drop dramatically...

    Jason, is your machine purpose-built for PCB routing? It looks great! Nice idea to use such huge linear rails, eliminating the need for pairs of rails and all the associated alignment!

  9. #9
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    Very nice Jason!

    --

    Linear servo might be practical to hobbyists as linear motor is probably the easiest motor to build as DIY. It is just made out of standard magnets, iron and coil. I have built one my self and it worked.

    The hardest parts are the design (there are hobbyists that have done FEM simulations and designed RC motors) and making really tight winding of coils to maximize available force.

    Or maybe one could just buy the "forcer" (coils) part from some manufacturer and make magnet track as DIY to save some amount of cash.

  10. #10
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    Quote Originally Posted by damae View Post
    Jason, is your machine purpose-built for PCB routing? It looks great! Nice idea to use such huge linear rails, eliminating the need for pairs of rails and all the associated alignment!
    Hi Damae, my apologies for not replying sooner! The machine wasn't built with any particular purpose in mind, the goal was high accuracy and repeatability for small parts machining. I'm very happy with it

    Xerxes, thank you for your kind words!

    Best regards,

    Jason

  11. #11
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    Smile Another video!

    Here's a slightly better video of our VSD-XE powered mill. Cutting acrylic again, this time with a much more appropriate cutter!
    [ame="http://www.youtube.com/watch?v=92SRZ4kmIQU"]YouTube- Vacuum table test[/ame]
    Feedrate is 160 ipm, 1/8" single flute cutter, DOC 1/8" at 20,000 rpm.

    The pulse smoothing feature in GDTool is giving us really nice smooth curves and a great finish - the edges of the shape in the third photo are quite transparent.

    Best regards,

    Jason
    Attached Thumbnails Attached Thumbnails IMG_5669 2.JPG   IMG_5685 2.JPG   IMG_5683 2.JPG  

  12. #12
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    Thanks for the video, very cool! Your machine really seems to cut shiny edges :-)

    I assume you also used brushless servos on this mill.

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