Table of Contents
What is a radial plate cam with knife edge follower?
The ‘radial cam’ is a rotating plate or disc with an outer circumference shaped to produce a required movement (usually linear) to a ‘follower’ which is held against it.
What is a knife edge follower used for?
The Knife Edge Follower: This is the simplest type, is not often used due to the rapid rate of wear. When it is adopted, it is usually for reciprocating motion, running in slides and there is considerable side thrust, this being a component of the thrust from the cam.
What is the difference between a cam and a follower?
Followers move vertically to the axis of the cam when the cam moves in a reciprocating motion. The follower is a part of a machine that follows the cam that is either oscillating or reciprocating in motion. In brief, a driver member is a cam, while a driven member is known as the follower.
What does a radial cam do?
A radial cam converts a rotational motion into a translational motion of the follower. The displacement of the follower is determined by the cam’s profile. This Demonstration generates a cam profile starting from a displacement diagram defined by a set of locators.
What is the difference between roller follower and knife edge follower?
Advantages of roller follower over knife edge follower a) Roller follower has less wear and tear than knife edge follower. b) Power required for driving the cam is less due to less frictional force between cam and follower.
Which cam is also known as radial cam?
Disc cam
Explanation: Disc cam is also known as radial cam. This cam is also generally referred as plate cams. These cams are cut-outs of flat metal plates. The follower moves on a plane which is perpendicular to the camshaft axis.
What is a radial follower?
Explanation: When the motion of the follower is along an axis passing through the centre of the cam, it is known as radial follower.
How many types of radial cam are there?
It has two types one is concave surface and other is convex surface type. A circumferential cut is made on the periphery of the cam for the rotation of the follower.
Why a roller follower is preferred to a knife edge follower?
The contact end of the follower is roller and rolling motion exist between Cam and follower. At high speed operation, knife edge follower works in a non smooth manner causing higher wear and chatter. That’s why roller follower are higher preferred.
What is plate cam?
Disc or plate cam The most commonly used cam is the cam plate (also known as disc cam or radial cam) which is cut out of a piece of flat metal or plate. Here, the follower moves in a plane perpendicular to the axis of rotation of the camshaft.
What is the difference between cam and follower?
The follower is a part of a machine that follows the cam that is either oscillating or reciprocating in motion. In brief, a driver member is a cam, while a driven member is known as the follower. There is always a frame that supports the cam and guides the follower.
What are the advantage of roller follower than knife edge follower?
Answer: Advantages of roller follower over knife edge follower a) Roller follower has less wear and tear than knife edge follower. b) Power required for driving the cam is less due to less frictional force between cam and follower.
What is difference between cam and follower?
What is a mushroom follower?
mushroom follower (flat-foot follower) A type of cam follower with a flat surface. Access to the complete content on Oxford Reference requires a subscription or purchase. Public users are able to search the site and view the abstracts and keywords for each book and chapter without a subscription.
Which type of follower motion is preferred for high speed and why?
Hence for the high-speed engine, the cam follower should move with Cycloidal motion.
What are the limitations of knife edge follower?
Limitations of knife edge follower are: Excessive wear due to small area of contact between cam & follower surfaces. 2. In this follower a considerable thrust exists between the follower and guide.
What is a radial cam?
In radial or disc cams the shape of the working surface (profile) is such that the followers reciprocate in a plane at right angles to the axis of the cam as shown in Figure 1.49 (a). It is called radial cam because the motion of the followers obtained is radial (Figure 1.49). A differently shaped radial cam is also shown in Figure 1.49 (b).
What is a knife-edge follower?
An example of a knife-edge follower is given in the figure. It is having a sharp edge, i.e., knife edge, making contact with the cam. We can expect a higher frictional resistance and wear for these types of cams. And the system has considerable side thrust also.
How does a follower move in a disc cam?
In this case the path of the groove, which causes motion to the follower, constrains the follower to move upward and downward. In radial or disc cams the shape of the working surface (profile) is such that the followers reciprocate in a plane at right angles to the axis of the cam as shown in Figure 1.49 (a).
When was the first cam follower made?
A cross-sectional view of a stud type cam follower. The modern stud type follower was invented and patented in 1937 by Thomas L. Robinson of the McGill Manufacturing Company. It replaced using a standard bearing and bolt. The new cam followers were easier to use because the stud was already included and they could also handle higher loads.