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Ball Screw Drive Torque Calculation | Motor Selection Calculation
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- čas přidán 12. 08. 2024
- Ball Screw Drive Torque Calculation | Motor Selection Calculation
MasterClass series on Ball screw linear actuator Part 04
In this video you will lean, How to calculate driving motor torque for ball screw linear actuator.
on the basis of given axial force, ball screw lead size
and after calculation of motor toque we will select a servo motor on the basis of calculated torque and required motor speed.
Part 05: Coupling selection:
• Servo Coupling Selecti...
If you are a mechanical design engineer
I would recommend you to watch the complete series on Ball screw linear actuator design from start to end. • Machine Design Series ...
Downloadable CAD and datasheet link: drive.google.com/drive/folder...
#Machinedesign #Solidworks #Mechanical #Solidworktutorial #Mechanicalengineering #Pneumatics #Hydraulics #CAD #MASTERCLASS
#actuator #torque #servomechanism #servomotor
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Chapters
0:00 How do define motor specification.
1:14 Ball screw driving torque formula
3:30 Motor specification
Brother ..please can you make video on details of selection of hydraulics cylinder in spm.
Sure. Laksh, I'll bring Master Class series on the Hydraulic system with project example. Very soon. Where we will master Hydraulic cylinder selection, Hydraulic power pack sizing calculation. Also Hydraulic circuit design and valve selection
@@mastermechanicaldesign thanks a lot man ♥️
I love how you keep the bloobers - it humanizes you. Hey, new word for you to say :)
Thanks for all these videos in this series. I went down the design path for a system and now have a better understanding thanks to you
Hehehe thank you so much 😁
Thanks for series .
You welcome prince
😂😂😂instantaneous..😂😂 acha laga bro❤
Thank you. I did not read all the comments, but there is an error in the calculation process. The torque according to the numbers you used should be 1.35 Newton metres.
Yes there are some calculation mistakes, please keep up with me,
Very useful for motor selection
Thank you brother!
Esse he lecture chahiye bhaiya. Thank you.
Instteniosly 😂😂😂
Hahaha. Thank you Dev. If I can make you smile. its mean a lot to me.
Thank you, I found your videos very interesting, instantaneously! :-P
😆😆
Diameter of the ballscrew or other type of lead screw makes a difference as well. It's about the ramp angle of the threads.
Nice video!
Just one suggestion, you should add the acceleration as a parameter and use the inertia of the motor when selecting.
If you don't take the inertia into account you might end up with a system that will work but won't accelerate correctly (so you might never reach the maximim speed of the project, depending on the length of the actuator).
Hi, Thank you so much for your suggestion, Yes we should definitely consider MOI of all rotating elements (Ball screw + Coupling + Motor itself) during Torque calculations. I'll bring this calculation in dedicated motor selection series. Here I missed it, but I have considered double FOS.
Thanks for the series, There is mistake in Torque calculation T=680X10/(2000x3.14x0.8) = 1.35 N-m (Not 1.95 N-m). Please check
Hi Satya, Yes, please bear with me for example calculation mistakes, take the formula and put your own required values. Apart from calculation typing mistakes every thing is right 👍
Sir , can you please continue this how to calculate motor power as its missed in this part , i have seen your belt conveyor video , but still i want please make a video on this , it will clear many doubts.Thanks
Hi Charan, As we calculate the torque and speed in this video, We can calculate the power, Motor Power equal to Torque × angular speed.
As we have calculated in the conveyor.
Thanks for the useful video. Can you please make a video on shaft-hub connections? Like selection on size of key element in key-way connections on shaft and Cone press fits and so on? The calculation part is not available on CZcams and I am sure no one can explain better than you :)
Okay. Noted
why you chosen a servo motor without gears ? and what is the difference ? and what do you mean by servomotor without geras
Typo for the example: The result shown on screen is 1.95 Nm for the 680 N load example. The actual result with this equation and numbers is 1.35 Nm.
Hi Jemes, Yes in some of my videos, There are Typo errors, Just because I'm doing all the production work alone, now we have a cross check community. So errors have been minimised.
But there is no error in the definitions, concepts, and formulas 👍
nice
Thank you so much Ajin
Need video on servo motor selection.
Speed , torque , interia and all peramters we need to calculate before selecting motor..
Okay, noted. I'll bring a dedicated mini series on servo motors, but as it will take time.. Please keep patient. Thank you.
Hello! How could I determine the axial force for the ballscrew? Thanks for the videos, you're doing a great job!
You most welcome Luka, Ball screw axial force - Yes use the same formula. if you have defined motor torque, and Ball screw pitch then P which is axial force, this is your Ball screw maximum axial force.
@@mastermechanicaldesignThanks for the reply. I should've added that I have not defined the motor torque, nor I have some specifications about motor except it should be BLDC servo. Do you have any idea how should I continue?
Look first of all, as we all know ball screw is just like a gearbox, not producing any force or power itself. It all depends on motor torque. No matter its BLDC or servo motor, if motor torque will high. Ball screw axial force will be high.
Now how much torque?
So first make selection of ball screw and calculate the ball screw pitch . And there is video on it.
Then calculate you can either calculate ball screw axial force as per given motor torque or you can calculate required motor torque as per required axial force over ball screw, using same equation as in this video
@@mastermechanicaldesignThanks man, you've helped me a lot! Cheers!
What does the 2000 conversion factor on the bottom of the torque calculation convert?
This is actually 2*pi (if we use ball screw lead in meter) but as you are using "mm" unit for ball screw lead in this equation. This is why its 2*1000*pi
Don't ask me why we use 2*pi
"It's a long drive equation of mechanics physics"
I got something closer to 1.35(Nm)
Is the formula same for stepper motor also?
Yes Lokesh, this is formula for calculate the driving torque of ball screw system regardless of motor type, torque value will be same of all type of motors. 👍👍
Isn't moment of inertia also to be checked?
Yes, i have missed, please do consider MOI if Ball screws is heavy
Is the formula of torque applicable for rotary motors?
Rotary motor ? Or Rotory table ? This formula is for rotary motor
@@mastermechanicaldesign my design is rotary table with the use of rotary stepper motor. is the formula applicable for that?
😂😂😂 instantaneous..
🤣🤣🤣
Are u angrej brother?
😃 Good joke, No brother I'm Indian
Brother ball screw pitch take In meter not in mm .
No. Pitch has to be taken in mm, hence "2000" conversion factor is in this equation.
If you want pitch in a meter just change this factor to 2, best practices is pitch in mm this is why this equation is like this.
Typically in mm or tpi. I've never seen pitch in m in all I've spec'd out.
Instantaneous 🤣🤣🤣🤣
🤣🤣🤣 Mechanical
Nice but result is different ignore
Thank you, Yes there are some typos mistakes
Wrong calculation