Can you me understand this mechanism?

  • Thread starter Thread starter nickjmi
  • Start date Start date
  • Tags Tags
    Mechanism
AI Thread Summary
The discussion focuses on the mechanism that converts circular motion into rectilinear motion using a waved-wheel or cam. The cam rotates around a fixed shaft, causing a follower wheel to move up and down along its profile. This vertical movement is then transferred to an upright bar via an oscillating lever. The mechanism is compared to valve systems in combustion engines, although it features a simpler cam profile. Clarifications are sought regarding the cam's rotation, motion transfer, and the function of additional elements in the system.
nickjmi
Messages
3
Reaction score
0
TL;DR Summary
Can you explain me how does it work?
Can you explain me how does it work?

Circular into rectilinear motion. The waved-wheel or cam on the upright shaft communicates a rectilinear motion to the upright bar through the oscillating rod.

i've not understood this explanation

Cattura.JPG
 
Last edited by a moderator:
Engineering news on Phys.org
Cattura.JPG
 
Welcome, nickjmi :cool:

The waved-wheel or cam on the upright shaft rotates around its shaft, which cannot slide up or down.
The follower wheel follows (up and down) the profile of the edge of the waved-wheel or cam.

That up and down movement is transferred to the upright bar via the oscillating lever.
That is basically the mechanism of the valves driven by a rocking arm in combustion engines, only that the type of cam is different and the its profile less complex.

camshaft-operation.gif
 
Lnewqban said:
Welcome, nickjmi :cool:

The waved-wheel or cam on the upright shaft rotates around its shaft, which cannot slide up or down.
The follower wheel follows (up and down) the profile of the edge of the waved-wheel or cam.

That up and down movement is transferred to the upright bar via the oscillating lever.
That is basically the mechanism of the valves driven by a rocking arm in combustion engines, only that the type of cam is different and the its profile less complex.

View attachment 262413
Thanks, correct me if I'm wrong...
I think that the cam rotates so the follower is forced to go up and down...

If what I've written is correct, I've not understood:

1How does the cam rotate?
2How does the motion is transferred from the follower to the shaft which goes up and down?
3What is the function of the elements of the left?

Thanks ;)
 
nickjmi said:
Thanks, correct me if I'm wrong...
I think that the cam rotates so the follower is forced to go up and down...

If what I've written is correct, I've not understood:

1How does the cam rotate?
2How does the motion is transferred from the follower to the shaft which goes up and down?
3What is the function of the elements of the left?

Thanks ;)
1) This type of cam is called face cam or end cam. Power from a motor or engine is transferred to it through a rotating shaft, which axial movement is restricted by bearings.

2) It is a simple lever mechanism, which fixed pivot is located midway.

3) I can't understand this question.

Please, watch this video:

 

Thread 'Race car suspension Class'

Posted June 2024 - 15 years after starting this class. I have learned a whole lot. To get to the short course on making your stock car, late model, hobby stock E-mod handle, look at the index below. Read all posts on Roll Center, Jacking effect and Why does car drive straight to the wall when I gas it? Also read You really have two race cars. This will cover 90% of problems you have. Simply put, the car pushes going in and is loose coming out. You do not have enuff downforce on the right...
View full post »

Thread 'Cantilever help'

I'm trying to decide what size and type of galvanized steel I need for 2 cantilever extensions. The cantilever is 5 ft. The space between the two cantilever arms is a 17 ft Gap the center 7 ft of the 17 ft Gap we'll need to Bear approximately 17,000 lb spread evenly from the front of the cantilever to the back of the cantilever over 5 ft. I will put support beams across these cantilever arms to support the load evenly
View full post »
Thread 'Physics of Stretch: What pressure does a band apply on a cylinder?'

Thread 'Physics of Stretch: What pressure does a band apply on a cylinder?'

Scenario 1 (figure 1) A continuous loop of elastic material is stretched around two metal bars. The top bar is attached to a load cell that reads force. The lower bar can be moved downwards to stretch the elastic material. The lower bar is moved downwards until the two bars are 1190mm apart, stretching the elastic material. The bars are 5mm thick, so the total internal loop length is 1200mm (1190mm + 5mm + 5mm). At this level of stretch, the load cell reads 45N tensile force. Key numbers...
View full post »

Similar threads

My weird geneva mechanism doesn't work. Looking for suggestions
Replies
3
Views
2K
Designing a Geneva Mechanism: Overcoming Challenges
Replies
5
Views
3K
Understanding the mechanical advantage of a Pneumatic linkage system
Replies
1
Views
1K
How Can Innovative Wheelchairs and Mobility Solutions Meet Client Needs?
Replies
23
Views
2K
Question about the mechanism of a fishing rod
Replies
7
Views
2K
B I don't understand exactly how the propagation of light works
Replies
17
Views
3K
Vibration and Modal Analysis: Adding massless springs to a shaft
Replies
6
Views
2K
Mechanism for height adjustment of rotating body
Replies
9
Views
4K
Can Circular Motion Be Transformed Into Sinusoidal Oscillatory Motion?
Replies
1
Views
2K
Automotive Steering Force, Determining the Lever Arm
Replies
9
Views
1K

Hot Threads

Recent Insights

Back
Top