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Type: Posts; User: raychar1234

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  1. Nema24 3NM Hybrid Servo HBS57S + 60HBM30-1000 problem

    Hello guys,

    1) When no step pulse inputs and motor is in stationary, it will have small vibration sound emitting out and small ossicalation. These occurs every time to time after a short period of...
  2. Replies
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    Re: Single Board computer for LinuxCNC

    SSD is better in read/write, speed and storage method than SD card ....And, seem someone can run well Mesa 7i96 on Raspberry PI 4?, I really want to use this SBC instead?!
  3. Replies
    6
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    2,393

    Re: Computer to run Linux CNC

    Thanks for the information, I am on the final step to settle the use of Linux CNC in my new built milling machine. And soon to purchase a MESA card as well. I hope I can handle all the stuffs as what...
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    6
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    2,393

    Re: Computer to run Linux CNC

    By the way, does anybody know if Linux CNC support touch screen operation?
  5. Replies
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    2,393

    Computer to run Linux CNC

    Hello,

    Can the following spec. SBC (computer) run Linux CNC with Mesa card connected (likes 7i76ED)?

    Khadas VIM Basic:
    >Amlogic A311D-x4 2,2Ghz
    CortexA73, x2 1.8Ghz Cortex A53
    >Gigabit...
  6. Replies
    26
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    7,576

    Re: Epoxy Granite Portal Machine

    Thanks for the information. There is a picture of my CNC milling machine that is under building.431020
  7. Replies
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    7,576

    Re: Epoxy Granite Portal Machine

    I have not much experience in using timing belt.. just using a long XL type one for gantry X-axis drive...but only last for 2 years time(broke). Now in my new machine I plan to use much stronger HTD...
  8. Replies
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    7,576

    Re: Epoxy Granite Portal Machine

    what concern is the noise that comes from the hitting of gear tooth of fast rotating small gear with timing belt tooth, ..don't know ..has not yet enough experience?1
  9. Replies
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    7,576

    Re: Epoxy Granite Portal Machine

    Just similar as you, I prepared precision parts for several years which were bought from ebay which include 4 pieces THK KR33 and 1 piece NSK linear actuators with some small size linear rails. No...
  10. Replies
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    7,576

    Re: Epoxy Granite Portal Machine

    If by stepping up gear 4/1 to reach 12000rpm on spindle, with using the timing belt, will there be too much noise? But if changing to v-belt? will there be slipping problem and rigid tapping not be...
  11. Re: Holding brake needed on a 4/5th axis when using a harmonic drive?

    Does anyone use epoxy as substrate for the linear rail to sit on? .. like for 15mm/20mm rails.If it is of 1mm thickness, it is difficult for so thick of it to fill all well. So, the method will like...
  12. Re: Holding brake needed on a 4/5th axis when using a harmonic drive?

    After tightening the bolts, will the precision get worse? Because epoxy which now acts as the underneath material is not so hard as steel. When it sustains the localized strong forces at those...
  13. Replies
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    4,339

    Re: Chinese Ebay 4th axis Harmonic Drive

    I have the same 4th axis long time ago ~4 years. Also have this problem when just bought, but not as serious as yours. The manufacturer uses old harmonic drive in it...
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    624

    Re: Spindle motor

    Hello, Mactec54, knew that, but its existing price is double!! Not really get your meaning of 120V/240V,1.5kw and VFD input issues. I guess it is 4 poles motor other than the usual one 2 poles?
  15. Replies
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    624

    Re: Spindle motor

    Hello guys,
    if i purchase a more power vfd spindle of 3kw one instead of my original planned 1.5kw one. Will the torque of of it be now sufficient to cut steel when i turn its speed down to...
  16. Replies
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    Re: Epoxy granite in metal frame.

    Yes, I can and will properly do them like that. And as all steel tubes already cut before I posted last time, I need to modify their lengths slightly to suit. Even so, instead of square 100x100mm end...
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    16,623

    Re: Epoxy granite in metal frame.

    In my building router machine, 100x100x4mm steel tubes are used for the frame. I still don't know how weird it will be after the arc welding that I will do. Firstly, I am a poor welder. Another...
  18. Re: Best belt drive ever! (If I do say so myself)

    In my building gantry router cnc machine, 3 axis are through the timing belt drive connections to the ballscrews. No solid solution to the little non-synchronization between gantry drives or backlash...
  19. Re: 24,000, 30,000 or 40,000 RPM - Jianken Spindle

    Yes, this is an option. But, in seldom case if you want do high spindle speed small size cutter cutting on steel for some details works after rough cutting on the same steel workpiece. Changing...
  20. Re: 24,000, 30,000 or 40,000 RPM - Jianken Spindle

    Many diy guys who like me want to have their medium size milling machine or router can do high speed engraving as
    well as slight cutting on steel material. Even a rigid machine construction is...
  21. Replies
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    8,103

    Re: New spindle motor - Servo or Induction?

    Sorry guys, it has two versions, seems I posted a wrong link which is a VFD one and the following is the correct servo one.:...
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    8,103

    Re: New spindle motor - Servo or Induction?

    Thanks for all guys valuable advice. Especially that I am now realized the importance of cooling fan that existed in the industrial spindle motor and of which it is not existed in axis-driven motors....
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    8,103

    Re: New spindle motor - Servo or Induction?

    Hello Spumco and everyone

    My required cutting performance spec. is quite similarly as yours. And I am quite confused some time about the case of using a servo motor that is for driving ballscrew ...
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    Re: Types of spindle motor to use

    So gearing them up is unavoidable. With using tooth timing belt will produce noise, people will use fine v-grooves type belt instead. However,
    after thousands steps run, slipping between belt and...
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    Re: Types of spindle motor to use

    Hello,

    Can I use the following motor for the spindle of my small milling/router machine use. (as wanting to have the rotation position control too).
    Thinking that it is axis motion drive...
  26. Replies
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    Types of spindle motor to use

    Hello guys,

    As many motors and controllers are out there on market, I am really confused to how to select a proper one for my
    spindle motor. By the way, I also want to have the control of the...
  27. Replies
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    2,141

    Re: Y-axis dual screw synchronization

    For the homing purpose of two leadscrews in gantry machine. Which type of switch is suitable in aspect of precision: mechanical level arm or Hall sensor type as shown in the attachment.
    The costs...
  28. Replies
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    2,141

    Re: Y-axis dual screw synchronization

    Understand. But what will happen if one of switch fails, one of the leg will continue move while another one is stationary?
    If the gantry structure(let's say a thin extrusions) is not strong enough...
  29. Replies
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    2,141

    Re: Y-axis dual screw synchronization

    Using linear actuators are easily for me to build. One in middle is doable but two are more strong especially when machine cutting head moves to leftmost or rightmost positions during cutting. ...
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    Re: 5 axis cnc design

    Firstly, you must ask yourself, what kind of things or products you want your cnc machine to make? For myself, ten years ago, I planned to do plastic prototype first and, later on, I changed my mind...
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