Cam and Follower | Definition , types , Nomenclature Of Cam
- DEFINITION. Cam is a mechanical element which is used to deliver the reciprocating or oscillating motion to another machine element known as follower.
- CAM NOMENCLATURE. Cam profile: Cam profile is outer surface of the disc cam. ...
- CLASSIFICATION OF FOLLOWERS. Types of followers are as follow. ...
What is the difference between Cam and follower?
Cam and Follower. The Cam and the follower have a line contact and constitute a higher pair. Higher pair: When the motion between the two elements is partly turning and partly sliding, then the pair is known as a higher pair. The cam is usually located on shafts and rotates at the uniform speed, whereas the follower motion will be based on ...
What is the difference between a follower and a driver?
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 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 cam-follower mechanism?
A high pairing mechanism is known as a cam and follower. For the smooth operation of a cam-follower mechanism, it is imperative that the follower should move smoothly without requiring much input power, meaning the follower should not jam during its movement.
What is an example of a cam follower?
A cam follower is a component that is intrinsically tied to a cam. Cams exist in many applications–dishwashers, sprinklers, etc. –but the most well-known example is that of a camshaft in a car. The goal of a cam is to convert rotary motion to linear motion.
What is a cam in mechanics?
Cams are mechanical devices used to convert the rotation of a shaft into simple or complex reciprocating linear motion. They can be sliding or rotational pieces in a mechanical linkage.
What are the types of cam and followers?
1. (A) According to type of shape (1) Radial or Disc cam (2) Cylinrical cam (3) Translation or Wedge cam (4) Conjugate cam (5) Globoidal cam (6) Spherical cam Types of cams… 2. (1) Radial or Disc cam In radial cams, the follower reciprocates or oscillates in a direction perpendicular to the cam axis.
What is cam and its types?
There are two types of Head Cams. First is Single Head Cam and the second is Multiple Head Cam. Cam is Rotating about minor axis or respect to Follower.
Where is a cam used?
As well as many of the consumer products we have in our homes, CAM is used in aerospace and defence, shipbuilding, the automobile and train industries and the machine tool industry.
Where is a cam and follower used?
The cam and follower mechanism is widely used for operating the inlet and exhaust valves of internal combustion engines. They are used in wall clocks and the feed mechanism of automatic lathe machines. They are also used in paper cutting machines and weaving textile machinery.
What are the 4 types of cam?
Cams and followersCircular. Circular cams use an off-centre pivot to cause the follower to move up and down. ... Pear. Pear cams are called this as they have the shape of a pear. ... Snail or drop. Snail or drop cams have the appearance of a snail shell. ... Heart-shaped or constant velocity.
What is cam diagram?
Cam diagrams in Motion Sizer are used to model the movement of a servo axis, which follows the motion of a virtual line shaft. The angle of this line shaft is described by φ. You can define segments for each cam diagram that correspond to the different sequences of motion that your axis performs.
What are the advantages of cam and follower?
Cam and Follower Advantages: Cam and follower bearing are that they always distribute evenly, regardless of the configuration of the unit. A wide range of linear motions is available from cams and followers. Cam follower can absorb more shock than normal and can reduce distortion. They are highly versatile.
What are the types of follower?
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 is the full meaning of cam?
computer-aided manufacturing1 computer-aided manufacturing.
What material is cam and follower?
The camshaft or camshaft lobes are made from a malleable cast iron and the cam followers are made from a carbonitrided 52100 or 4130 steel to provide excellent wear resistance equivalent to diamond-like coatings at greatly reduced cost.
What does cam stand for?
CAMAcronymDefinitionCAMCameraCAMComputer-Aided ManufacturingCAMCamshaftCAM7179 more rows
What are the three types of cam?
What are the different types of CAM?Acupuncture.Ayurveda.Homeopathy.Naturopathy.Chinese or Oriental medicine.
What is a cam angle?
A Cam Angle Sensor is used to determine each cylinder providing a signal to determine the cylinder. This signal becomes a base signal in an electronic fuel injection system for fuel injection control and ignition timing control.
How much does a camshaft cost?
Replacing a camshaft is an expensive repair that usually costs anywhere from $700 to $3,000 depending on the vehicle. However, the average cost is between $1,250 and $1,500 for most makes and models. Some of the most expensive jobs may cost well over $4,000.
What Are Cam And Follower?
Cam follower is components that are internally attached to a cam. Cams exist in many applications dishwashers, sprinklers, etc.—but the most famous...
What Is Cam?
When two links are joined either along a line or at a point, it is called a high pair. Two such high pairing mechanisms will be incorporated in the...
Types of Cam:
#1. Disc or Plate Cam #2. Cylindrical Cam #3. Translating Cam #4. Radial Cam #5. Wedge Cam
What Is a Follower?
The follower is a translating or oscillating mechanical member that follows the movement of the cam. It may touch the surface profile of the cam or...
Types of Follower:
#1. Linear Follower #2. Oscillating Follower #3. Knife-Edged Follower #4. Roller Follower #5. Flat Face Follower
Cam and Follower Nomenclature:
#1. Trace Point #2. Base Circle #3. Pitch Curve #4. Prime Circle
Cam and Follower Working Principle:
It serves a general force X direction and serves as a common force Y direction and two normal force balancing Cocking moment, the moment due to the...
Application of Cam and Follower:
There are lots of applications of cams and followers as mentioned below: These are used in wall clocks. They are used in the feed mechanism of auto...
What is cam follower bearing?
Cam follower bearings, also known as track followers, can come in a variety of designs but are usually made with an extra thick outer ring. This design allows cam follower bearings to handle high radial loads while accepting extreme shock loads without the risk of fracturing a softcore part, depending on the application.
Why is it important for a cam follower to move smoothly?
For the smooth operation of a cam-follower mechanism, it is imperative that the follower should move smoothly without requiring much input power, meaning the follower should not jam during its movement.
What Is a Follower?
The follower is a translating or oscillating mechanical member that follows the movement of the cam. It may touch the surface profile of the cam or may be spring-loaded. It may have a uniform velocity or a uniform acceleration speed. With the help of trailing motion, complex output motion can be obtained.
What happens when a cam rotates based on the profile of the cam?
If this cam rotates based on the profile or shape of the cam, the follower will have translational motion along with this prismatic pair between the fixed link and the follower. So in the uniform rotational motion of this cam, there will be an oscillation of the follower along with the guide.
What is translating cam?
A translating cam is a type of cam in which the cam can rotate in a horizontal plane. The follower is also attached, in which the motion is interrupted with the help of a spring. Sometimes groove cams are used in which follower motion is achieved without the use of a spring.
What is a disc cam?
The disc or plate cam is a type of cam in which the follower moves radially from the center of rotations of the cam. This cam is very popular due to its simple design & compactness, which can be fitted in remote locations. Disc or plate cams have applications in IC engines and machine tools.
What is a translational follower?
If the follower has linear motion , we call it a translational follower. Now for a translating follower, i.e., the axis of that prismatic pair passes through the cam center; we call it radial translating. We call this a radially translating follower when the follower axis passes through the center of the camshaft.
What is the difference between cam and follower?
Cam is the driver in the cam and follower mechanism, which reciprocates or rotates . The follower is the driven component, which oscillates or reciprocates. The ultimate aim of the cam and follower mechanism is to get the desired motion for the follower.
How to build a cam and follower?
Here we discuss the manufacturing technique used for producing cam and follower.
What is a follower?
The component which gives the desired motion in the mechanism is the follower. The motion of the follower is the output in the cam follower mechanism.
Why is the roller follower preferred over the knife-edge follower?
The roller follower is preferred over the knife-edge follower to reduce the friction, hence the wear of the follower.
What is a Cam?
Cam is the driving component in the mechanism, making sure that the follower follows the desired motion.
What are the two forces that are involved in cam follower?
There are mainly two forces acting in cam follower mechanism, normal force and frictional force.
What is spring loaded cam?
Spring-loaded: The contact between cam and follower is enabled using a pre-loaded spring.
What is the cam and follower mechanism?
A Cam is a rotating machine element which gives reciprocating or oscillatory motions to another element known as the follower.
Which pair of a cam and follower has a line contact?
The Cam and the follower have a line contact and constitute a higher pair.
What is a cylindrical cam?
Cylindrical Cam. In cylindrical cam, the follower will be reciprocated or oscillates in a direction parallel to the cam axis. The follower rides in the groove at its cylindrical surface. Check the schematic representation of the Cylindrical cam with both the reciprocating follower and the oscillating follower below.
What is radial cam?
In radial Cams, either the follower reciprocates or oscillates in a direction perpendicular to the cam axis. All the cam and follower mechanisms that we have discussed in the above section comes under the Radial or Disc cams. One example for the Radial Cam is again shown below
What is the spherical follower?
When the contacting surface of the follower is of spherical shape, then the follower is called the spherical follower. The schematic representation of the spherical follower is shown below.
Why is there excessive wear on a knife edge cam?
Due to the very small contacting area for the follower on the cam , there will be excessive wear. In this knife-edge follower, there will be a considerable amount of side thrust exists in between the follower and the guide.
What is a roller follower?
Roller Follower. When the contacting end of the follower is a roller, it is called as the roller follower. The schematic diagram of a roller follower is shown in the below figure. Roller Follower. Between the roller and the follower, there will be a rolling contact, so the wear will be greatly reduced. In roller follower also there will be side ...
Why Need Cams and Followers?
In the department of mechanical engineering, the cam and follower mechanism represents an important role in achieving uniform distribution of forces in a single machine element.
Where Cams and Followers Used?
Cam and follower are used in the i.c engine to close and open the outlet valve and intake valve.
What is Followers?
The follower is a rotating or oscillating element of a machine that follows the movement of the cam by direct contact. When a cam travels in reciprocating movement, the follower moves parallel on the cam axis.
What is a cam in a machine?
The cam is a rotating part that provides reciprocating or oscillating motion to the follower by direct contact. This part is essentially used to change the movement from the rotary to linear. It is a part of a machine, that is a revolving electric wheel or a shaft that hits a lever at several points on its circular path.
What is snail drop cam?
The snail drop cam is used for example in a mechanical timekeeping clocking-in clock so that the daytime advance system could run at exactly midnight and involve a follower for more than 24 hours by the cam in a spiral path.
Why is a roller follower used?
The roller follower is essentially used in high-speed operations because it holds smooth contact with the surface. It has less wear and tear than the other followers.
What is a cylindrical cam?
In cylindrical cam, it consists of a groove in a cylindrical surface and the follower moves on a cylindrical surface parallel to the axis of the cylinder. 5. Heart-shaped Cam. The heart-shaped cam seems like an asymmetric heart.
Why use cam follower?
Cam-follower can be used to get varieties of linear motions when applied to a machine. Due to the fact that the thickness of cam-follower is high compare to bearings, they tend to absorb a higher amount of shock. This helps to increase the mechanical efficiency of a machine component.
How does a cam follower work?
This means where is cam there must be follower and vise versa else they are useless. A cam is a mechanical component that rotates in circular or eclipse about the minor axis of a follower .
What is the difference between a follower and a driver?
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. There is always a frame that supports ...
What is a cam in a machine?
A cam is a rotating element that offers reciprocating or oscillating motion to a follower which an element of the machine by direct contact. A cam can also be said to be a mechanical member used to impart desired motion to a follower by direct contact.
What is the base circle of a cam profile?
Base Circle – It is the smallest circle of a cam profile drawn from the center of rotation of the cam.
What type of cam has no contour?
A disk or plate type of cam has no regular contour to transmit a specific motion to the follower.
Why is a wedge cam angled?
A wedge cam has an angled flat regular contour so that a specific motion can be imparted to the follower.
What is a cam in physics?
A cam may be defined as a machine element having a curved outline or a curved groove, which, by its oscillation or rotation motion, gives a predetermined specified motion to another element called the follower .
What is the principle of cam profile?
The fundamental principle in designing the cam profiles is still inversion, similar to that that for designing other cam mechanisms, ( e.g., the translating follower cam mechanism ). Normally, the follower oscillates when the cam turns. This means that the relative motion between them is a combination of a relative turning motion and a relative oscillating motion. Without changing this feature of their relative motion, let the cam remain fixed and the follower performs both the relative turning motion and oscillating motion. By imagining in this way, we have actually inverted the mechanism.
What happens when a cam turns through one motion cycle?
When the cam turns through one motion cycle, the follower executes a series of events consisting of rises, dwells and returns. Rise is the motion of the follower away from the cam center, dwell is the motion during which the follower is at rest; and return is the motion of the follower toward the cam center.
What is offset follower?
Offset follower: The center line of the follower does not pass through the center line of the cam shaft. The amount of offset is the distance between these two center lines.
What is plate cam?
Plate cam or disk cam:#N#The follower moves in a plane perpendicular to the axis of rotation of the camshaft. A translating or a swing arm follower must be constrained to maintain contact with the cam profile.
What is a cylindrical cam?
Cylindrical cam or barrel cam ( Figure 6-5a ):#N#The roller follower operates in a groove cut on the periphery of a cylinder. The follower may translate or oscillate. If the cylindrical surface is replaced by a conical one, a conical cam results.
Is the weight of the follower system sufficient to maintain contact?
The weight of the follower system is sufficient to maintain contact.
