HOW TO DRAW THE CAM PROFILE II ROLLER FOLLOWER II SIMPLE HARMONIC MOTION
Вставка
- Опубліковано 9 гру 2024
- A CAM, with a minimum radius of 25 mm, rotating clockwise at a uniform speed is to be designed to give a ROLLER FOLLOWER, at the end of a valve rod, motion described below :1. To raise the valve through 50 mm during 120° rotation of the cam ;
2. To keep the valve fully raised through next 30°;
3. To lower the valve during next 60°; and
4. To keep the valve closed during rest of the revolution i.e. 150°
The diameter of the roller is 20 mm and the diameter of the cam shaft is 25 mm.
Draw the profile of the cam when the line of stroke of the valve rod passes through the axis of the cam shaft. The displacement of the valve, while being raised and lowered, is to take place with SIMPLE HARMONIC MOTION. Determine the maximum velocity and maximum acceleration of the valve rod during rise and return of follower when the cam shaft rotates at 100 r.p.m.
you have helped me to understand what my lecturer doesnot have ♥️♥️👏🏻👏🏻👏🏻
Thanks Dear....
All the Best...
Thank you so much sir :-) it's really helpful 👍
Most welcome!
All the best....
THOUGH THIS NUMERICAL WAS TAKEN FROM R. S KHURMI BOOK, PAGE -789, EXAMPLE 20.3....BUT YOUR EXPLANATION SKILL IS TOO GOOD SIR 🙏, THANKS FOR THIS VEDIO 🙂
Dear Das Thanks for the Appreciation....
All the Best....
kitaab ko ghol ke pegaye ho kya bhai itni badi book mein se itni chota question yaad hai
25 mm and 20 mm are the diameters, not radius.. plenty of mistakes in just one question
Thank you sir. This was really helpful for me.
Thanks dear...
All the best......
Would you please recheck the equation for maximum acceleration mentioned in the video?
for acc, is it s^2 or s?
yes it is s^2
@@TECHCAD no only S /2 is not be taken in square
Why the diameter of the cam shaft is given in the problem ?
It's given to find out the prime circle diameter.
Please, forgive me, but I did not understand the formulas of max. velocity and acceleration. Could you explain from where they derive, I mean all passages to them? Thanks
What us n and n² in the calculation of velocity and accelaration ? What value did u take?
Dear
N is the RPM of the cam shaft and as per the question it is 100. hope u got it
The small n is actually pi
Thanks alot for this
Why there is always six equal section in displacement?
Dear Aman
U can also go for the more equal divisions that is more than six or also we can take less than six.
But main thing is it should be equal divisions. but as practice six equal divisions is appropriate to draw the profile of the CAM. that is why six is selected. u can also go for another figure like seven ,eight or more.
@@TECHCAD ok thanks 👍
Cam Raduis or Diameter 25 kaise ?
Dear it is given in the question, Pls read the first line.
Any book you can recommend
Theory of Machines by R.S. Khurmi.
Whatvis small n last formula?
That's not n, that's pi
Isnt the angle of rise 120? Why have you used 60
Dear i have taken all angles correct,120 is the rise or outstroke angle and 60 is the return angle.
pls see carefully..
Thankyou so much sir
great sir ...
Thanks Dear
Thanks, and very helpful
Dear
All the Best...
How can we take 36 cm
It is more than a steel scale and more big than a book
How to draw 36 cm line in a book
you can take 360=18 cm or even less scale..
I take 36 cm just to explain the importance of scale factor...
@@TECHCAD if i take 18 cm....i have to take that 50 cm as 25 cm cm ..offset or raise in roller or i can take 50 cm also
sir isn't the return angle 60 degree while calculating for velocity and accelaration
Yes Siddarth..It is 60 degree
It is clerical error only....
@@TECHCAD yes sir the answer remains same
Can you send me the formula for desent and ascent...because of blur I can't see the formula
Well done
Thanks Dear...God bless u...
Thanks sir
All the best
👍👍👍