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Type: Posts; User: damunk

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  1. Thread: ROD end bearing

    by damunk
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    ROD end bearing

    rod ends have a ball bearing that can give movement in all direction

    is there such rod end bearing that restricts its movement to 180 degree movement i.e up and down

    but not left and right.
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    Re: choosing the correct thickness belt

    true i can imagine that
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    What’s fascinating is how you can turn the...

    What’s fascinating is how you can turn the pulleys by hand and with certain easy lift a weight via the lead screw.

    What is the science / mechanism behind that.?

    I am intrigued that what appear...
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    Re: choosing the correct thickness belt

    When you finish with a calculation of 100N belt tension. Is this the force you have worked out that is acting on the belt.
    So for example if the belt was rated at 80N; it would snap straight away.?
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    Re: choosing the correct thickness belt

    i cant wait to delve into it while having my shake.

    a final question. is a 1300N belt strong enough providing it is aligned and tensioned correct; based on the figures above.

    also when i...
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    Re: choosing the correct thickness belt

    you have any links to vids or web where i can learn more about this. ive seen alot of pulley rope physics classes but not pulley/belt drive stuff
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    Yes ball screw and the pulley on that is 50mm in...

    Yes ball screw and the pulley on that is 50mm in diameter.
    Yes about second up and then a second down
    That equates to 400mm per second

    Edit/ and yes I have limited the speed to that otherwise...
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    Keep getting stuff wrong. It’s around 400m/s so...

    Keep getting stuff wrong. It’s around 400m/s so it’s like between half a second to a second up and then down so like you said 2 seconds . So fast enough for the milk shake lol. If you can work it out...
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    Re: choosing the correct thickness belt

    so like 10 cycles in a minute which is like 6 seconds
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    Re: choosing the correct thickness belt

    the motor inertia is :

    Torque coefficient(N.m/A)
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    Re: choosing the correct thickness belt

    we are nearly there. i am able to reduce the accleration in what is called "smoothing" which is the smoothing of the profile to provide less "jerk"

    anyhow; the pitch of the screw is 20mm which is...
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    Re: choosing the correct thickness belt

    The max speed is 0.4Mper second and there is hardley any viberation in the leadscrew that is 25mm thick. short lead screw so that is a bonus.
    the acceleration is instant. 400mm/s instant...
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    Re: choosing the correct thickness belt

    pete, thank you for your reply. ;

    1) you are using a belt to lift a weight? yes 40kg (EDIT: but via pulleys and leadscrew)
    2) are you using the leadscrew and driving the screw with a belt? YES ...
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    choosing the correct thickness belt

    how much kg can a 1000Fanm(N) tension member loading lift at speeds of up to 0.5M per second using a lead screw. (2500rpm)

    Is there any formulas out there work out the correct belt to use on a...
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    T5 belt strength

    Which of these is the stronger belt; KELVER VS STEEL

    Is there a way to get a company to put more steel cords into a belt?

    does anyone know of any alternate; belt width must be 15-16mm width.
    ...
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    Re: HUGE noise from nema23 and very hot TB6600

    */


    //Pins definitions
    #define forward 11 // button forward pin
    #define reverse 12 //button reverse pin
    #define stepPin 3 // STEP+ pin
    #define dirPin 2 // DIR+...
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    Vlod. There will be hardly any load on it at all....

    Vlod. There will be hardly any load on it at all.
    And it is an experiment so I don’t want to spend any more Than I have done YET.

    I went from gbrll nema 17 to tb6600 nema 23 on advice therefore...
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    Re: HUGE noise from nema23 and very hot TB6600

    This is the code I am using;

    /* Example sketch to control a stepper motor with TB6600 stepper motor driver and Arduino without a library: continuous rotation. More info:...
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    Re: HUGE noise from nema23 and very hot TB6600

    Is there a major disadvantage if I do it with adruino? is adriuno and TB6600 board able to run 24 hours 5 days?
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    Re: HUGE noise from nema23 and very hot TB6600

    Because I am a newbie and don't know much and also I wanted to add a DELAY of 60 seconds after every limit switch activation.

    So I could get a geared DC motor as powerful as a 3A nema motor and...
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    Re: HUGE noise from nema23 and very hot TB6600

    Vlod, it worked great right off the bat thanks!

    I am trying to achive as follows;

    I have a ballscrew and would like it to go clockwise until it hits a limit switch then reverses direction;...
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    Re: HUGE noise from nema23 and very hot TB6600

    I just got another driver and the resistance on the 200K setting showed that the new unit shows resistance values between all A+ A-, B+ B- and VC/GND
    The old unit shows zero readings therefore...
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    Re: HUGE noise from nema23 and very hot TB6600

    can i ask if outputs were dead from tb6600 then how was the motor able to draw power from it to heat up.?
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    Re: HUGE noise from nema23 and very hot TB6600

    i left the tb6600 on for a couple of minutes turned it off. put it on 200 ohms. and had one probe on the coil outputs and other probe on either GD and VC.
    There was zero reading.
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    Re: HUGE noise from nema23 and very hot TB6600

    ive done gbrrll but with nema17; motor not big enough so bigger drivers like tb6600 could drive nema 23 which was perfect for me

    the motor has 4 wires ; 2 + 2 paired all good; checked resistance...
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    HUGE noise from nema23 and very hot TB6600

    Hi guys,

    I set up my nema23 stepper motor 2.8A using a TB6600 driver/Adruino board as per link: https://mytectutor.com/tb6600-stepper-motor-driver-with-arduino/


    TB6600 Stepper Motor Driver...
  27. Re: A general G-Coding question in regards to a ballscrew

    lol i managed to program g-code to make it go left to right and home, reset zero , time delay, that stuff is easy.

    and on the gbrl controller it allows connection to limit switches.

    i just...
  28. Re: A general G-Coding question in regards to a ballscrew

    Would this one do itl its alot cheaper it says on it. time delay.
    what about those limit a and limit B input switching.
    ...
  29. Jim Those look a lot more user friendly than the...

    Jim
    Those look a lot more user friendly than the gbrll controller which you need laptop trigged to it.

    So basically on the controller you shown for single axis when it hits limit switch it...
  30. Okay so I plan to have a limit switch on either...

    Okay so I plan to have a limit switch on either side but I don’t want the limit switch to stop the motor. I would like the ball nut to reverse direction when it hits a limit switch after a 5 second...
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