Different types of follower motions – The follower during its travel may have one of the following motions:- Uniform velocity, Simple harmonic motion, Uniform acceleration and retardation, Cycloidal motion.
What are the three types of motion of the follower?
Cam follower systems are designed to achieve a desired oscillatory motion. (a) Uniform velocity. (b) Modified uniform velocity. (c) Uniform acceleration and deceleration. (d) Simple harmonic motion. (e) Cycloidal motion. Click to see full answer. Also, what are the motion of the follower?
What is a follower mechanism?
Follower Mechanism: A follower is a mechanical component concerning which, the Cam rotates in an oscillatory or circular motion. Follower inhibits the push and pulls of the Cam. A follower is used to transfer the motion to the required machine part. The Follower rotates in an oscillating or circular arc.
What is a follower in a cam?
A follower is a rotating or oscillating element of a machine that follows the motion of the cam by direct contact. A follower is a mechanical component concerning which, the Cam rotates in an oscillatory or circular motion. Follower inhibits the push and pulls of the Cam.
What is reciprocating motion of a follower?
As the cam rotates, the follower rises and falls in a process known as reciprocating motion. The motion of the follower is restricted to a pre-determined pattern by a guide. The follower maintains contact with the cam through the force of gravity or by a spring.
What type of motion does the follower move in?
reciprocatingA cam and follower mechanism is a profiled shape mounted on a shaft that causes a lever or follower to move. Cams are used to convert rotary to linear (reciprocating) motion. As the cam rotates, the follower rises and falls in a process known as reciprocating motion.
What are the three types of follower motion?
Motion of the Follower : Simple harmonic motion, 3. Uniform acceleration and retardation, and 4. Cycloidal motion.
What are the different types of follower motions used in cam follower mechanism?
Following are the types of followers, which are described below,According to the shape of the follower. Roller follower. Knife edge follower. ... According to the movement of the follower. Reciprocating follower. Oscillating follower.According to the line of movement of the follower. Radial follower. Offset Follower.
Which motion of follower is best?
Hence for the high-speed engine, the cam follower should move with Cycloidal motion.
What are different types of followers?
Types of follower according to Shape1) Knife-edge Follower.2) Roller Follower.3) Flat-faced Follower.4) Spherical Follower.1) Translatory motion type follower.2) Oscillatory motion type follower.1) Radial Follower:2) Offset Follower:
What are the various types of followers?
Types of Follower:Knife edge follower.Roller follower.Flat-faced follower.Spherical follower.Radial follower.Offset Follower.
What is a roller follower?
The Roller Follower is a compact and highly rigid bearing system. It contains needle bearings and is used as a guide roller for cam discs and straight motion. Since its outer ring rotates while keeping direct contact with the mating surface, this product is thick- walled and designed to bear an impact load.
How does an oscillating follower work?
They are also of two types. In the first type, a groove is cut on the surface of the cam and roller and has a positive oscillating motion. The other has a cylinder as the working surface. In this type of cam, the spring-loaded follower translates into a cylinder rotating along the parallel axis.
How many times does the follower move up and down with one revolution of the crank?
The follower goes up and down once in one revolution of the crank. This means when the crank spins all the way around once, the follower will go up and down once.
Which type of follower motion is preferred for high-speed applications *?
cycloidal followerWhy is cycloidal follower best suited in high-speed applications? The cycloidal cam profile is best suited for high-speed applications because the successive derivatives of the function, ie. velocity, acceleration, and jerk are continuous functions rather than step functions, throughout the motion.
What is Cycloidal motion?
In geometry, a cycloid is the curve traced by a point on a circle as it rolls along a straight line without slipping. A cycloid is a specific form of trochoid and is an example of a roulette, a curve generated by a curve rolling on another curve.
In which of the following follower motion have uniform velocity?
1 Uniform velocity This motion is used where the follower is required to rise or fall at a constant speed, and is often referred to as straight-line motion. Part of a uniform-velocity cam graph is shown in Fig.
Friday, August 1, 2008
Cam follower systems are designed to achieve a desired oscillatory motion. Appropriate displacement patterns are to be selected for this purpose, before designing the cam surface.
Types of follower motion
Cam follower systems are designed to achieve a desired oscillatory motion. Appropriate displacement patterns are to be selected for this purpose, before designing the cam surface.
How many types of motion are there?
4 Types of Motion. As per physics and mechanics, there are mainly 4 types of motion, i.e. Rotary Motion: A special type of motion in which the object is on rotation around a fixed axis like, a figure skater rotating on an ice rink.
What are some examples of objects that can have multiple types of motion at one point of time?
Name the motion possessed by these objects- blades of an electric fan in motion, a spinning top, hands of a clock. vehicle on a straight road, the earth around the sun and pendulum of a wall clock.
What is oscillatory motion?
Oscillatory motion is simply elaborated as the repeated motion that an object does by repeating the same movement again and again. Oscillatory motion would keep on moving forever when there is an absence of friction but in our real world, the motion eventually stops by coming to equilibrium.
What is rotational motion?
Rotational motion can be defined as when an object moves along its axis and all the parts of it move for a different distance in a given period of time. Thus, if an object is under rotational motion all of its parts will move different distances in the same interval of time.
What is the term for the motion that does not repeat itself after a period of time?
For example- Movement of the earth. On the other hand, the motion which does not repeat itself after regular intervals of time is known as Non-Periodic Motion .
What is circular motion?
When an object is constantly moving in circular a path it is called circular motion. It circular motion, the speed of the object should be constant. Few examples of circular motion are- Movement of the earth on its axis, a bicycle or a car moving on a circular track of park, the motion of the moon around the earth etc.
What is non uniform motion? What are some examples?
Examples of non-uniform motion are- a man walking on the road, a freely falling body, a train moving at various speed limits, etc. Non-Uniform Motion.
What is a follower in a machine?
A follower is a rotating or an oscillating element of a machine that follows the motion of cam by direct contact. If a cam moves in reciprocating motion the follower moves in vertically respect to the axis of the cam. This part of the machine is mainly following the cam which can be reciprocating or oscillating in motion.
What is the mechanism of cam and follower?
In Printing Machinery, the mechanism of Cam and Follower helps the screen to be printed. The push helps to take the position where the printing will be done and the pull helps to print on that. In Textile Types of machinery, the mechanism of Cam and Follower helps to stitch clothes by a push and pull to move the Maku.
What is the mechanism that moves links?
In mechanical engineering, engineers often use a higher pair links mechanism that is renowned as Cam and Follower Mechanism . This pair of higher links are used to move links spontaneously or periodically.
What is the role of cam follower?
Cam follower mechanism plays a significant role as it utilized to drive a minute machine component seamlessly. Central locks and ordinary lock systems are also developed by incorporating the mechanism of cam and follower.
Why is the follower used in high speed?
This type of follower is mainly used in high-speed operation because it has a smooth contact with the surface. This type of follower has less wear and tear as compared to the other followers.
Can cam follower absorb shock?
Moreover, due to higher thickness as compared to other bearings Cam follower mechanism can absorb a higher amount of shock that increases the mechanical efficiency of a machine component.
Is cam and follower a mechanical engineering?
Cam and follower mechanisms are not a small part of mechanical engineering. Therefore, precision and patience are required to implement the mechanism in practice. At first, the user should aware of the links and pairs before understanding the conception of cam and follower.
Cam and Follower
A cam and follower mechanism is a profiled shape mounted on a shaft that causes a lever or follower to move. Cam and follower are used to convert rotary motion into linear (reciprocating) motion. As the cam rotates, the followers rise and fall in a process known as reciprocating motion.
Cam and Follower Terminology
When we study about cam follower mechanism, some common terminology like a prime circle, base circle, pressure angle, etc. are used to describe a cam.
What is Cam Mechanism?
A cam is a rotating or sliding piece in a mechanical linkage, which is used in particular to convert a rotary motion into a linear motion. It is often part of a rotating wheel (e.g. an eccentric wheel) or a shaft (e.g. a cylinder with an irregular shape) that hits a lever at one or more points on its circular path.
Types of Cam according to follower movement
In these category types of the cam is classified as per the movement of follower. The movement of follower is depending upon the cam profile for this; cams are also classified according to follower movement.
Types of Cam according to the constraint of the follower
For proper functioning of the cam and follower mechanism, it is important to keep the surface contact between the cam profile and the follower at all times of rotation and any motion. For this, spring force, gravitational force, or positive drive are used in the cam and follower mechanism.
What is the Follower Mechanism?
A follower is a rotating or oscillating element of a machine that follows the motion of the cam by direct contact.
Types of Follower
There are different types of surface contact between cam and follower and according to surface contact they are classified as follows:
What is follower motion?
A follower is a translating or oscillating mechanical member that follows the motion of the cam. It can touch the surface profile of the cam or can be spring-loaded. It can have uniform velocity or can have uniform acceleration motion. Complicated output motion can be achieved with the help of the follower motion.
What is a knife edge follower?
If the follower has just a knife-edge with the cam then we call it a knife-edge follower. the knife-edge is only theoretical because knife-edge follower is never used because of the very high wear rate. Contact-stress will be extremely high
What is the trace point of a roller follower?
Trace point: Tracepoint is a point on the follower, which describes the follower movement. For roller follower, it is the centre of the roller. So the tracepoint is the roller centre, which means the movement of the follower will be described in terms of the motion of this roller centre.
How many links does a wedge cam have?
Wedge cam has a four-link mechanism, first is the fixed link, the cam which looks like a wedge is the other link. It depends on the profile of this wedge, as this cam oscillates in the horizontal direction, the follower will oscillate along the vertical direction along with this prismatic pair or this guide.
What is the common normal between the roller and the cam?
The common normal between the roller and the cam is passing through the roller center and normal to the cam profile. If we neglect the friction, the force that the cam exerts on the rollers is along this common normal. So this is the direction of the force between the cam and the roller in the absence of friction.
What is the smallest circle that can be drawn with the cam center as the center and tangential to the pitch
This circle has a centre at the cam-shaft axis and tangential to the pitch curve. This circle is called the prime circle. If base circle radius is Rb and Rr is roller radius, then the prime circle radius is Rp = Rb + Rr.
Which direction does a normal force act?
A normal force acts in the X direction and a normal force acts in the Y direction and these two normal forces balance the cocking moment, the moment due to this force Fn.
