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Cams | Followers | Types of Cams | Types of Followers | Cams Working | Followers Working | Basics
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Cams and followers are mechanical components used in various machines and mechanisms to convert rotary motion into linear or reciprocating motion. Here's some information about cams, followers, and how they work:
Cams:
A cam is a rotating or sliding component that imparts a predetermined motion to a follower.
Cams are typically used to control the timing or motion of other mechanical components in a machine.
The shape of the cam determines the type of motion that will be transmitted to the follower.
Cams can be categorized into various types based on their shape and purpose.
Types of Cams:
Disk or Plate Cam: This type of cam is a simple circular disk with a profiled edge. It imparts a reciprocating or oscillating motion to the follower.
Cylindrical or Barrel Cam: A cylindrical cam has a groove cut into its surface, and the follower rides inside this groove. As the cam rotates, it imparts a reciprocating or oscillating motion to the follower.
Heart-shaped or Pear-shaped Cam: These cams have a shape resembling a heart or a pear. They are used to achieve variable or non-uniform motion in the follower.
Snail or Drop Cam: This type of cam has a spiral-shaped groove. As the cam rotates, the follower moves up or down along the spiral path.
Followers:
A follower is a component that follows the contour or profile of a cam, transmitting the motion imparted by the cam.
The follower can have different types of motion, such as sliding, oscillating, or rolling, depending on its design and purpose.
The follower can be directly connected to the machine component that needs to be actuated or controlled.
Types of Followers:
Knife-edge Follower: It has a sharp edge that slides along the cam profile. This type of follower is simple and commonly used in applications where precision is not critical.
Roller Follower: This follower consists of a roller or wheel that rolls along the cam profile. The roller reduces friction and allows for smoother motion.
Flat-faced Follower: It has a flat surface that slides along the cam profile. This type of follower is suitable for applications where high contact forces are required.
Spherical Follower: This follower has a spherical end that maintains contact with the cam profile. It provides self-alignment capability and reduces wear.
Cams Working:
When a cam rotates, its profile or contour imparts a specific motion to the follower. As the cam rotates, the follower moves according to the shape of the cam profile. The follower can experience sliding, rolling, or oscillating motion depending on its type. This motion is then transmitted to other machine components, enabling them to perform their intended functions.
Followers Working:
The follower follows the contour of the cam, maintaining contact with the cam profile. As the cam rotates, it imparts motion to the follower. The follower, depending on its design, may slide, roll, or oscillate along the cam profile. This motion is transmitted to the connected machine component, allowing it to move or perform a specific action.
It's important to note that the specific working mechanisms of cams and followers may vary depending on the design and application. Different combinations of cam and follower types can be employed to achieve desired motions and functionalities in various machines and mechanical systems.
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