Types of cam and follower mechanism pdf merge

Follower driven in a cam follower pair, the cam normally rotates while the follower may translate or oscillate. This mechanism is very important in modern day engineering to incorporate a system with controlled movement. Cam mechanism is a case of a higher pair with line contact. Cam follower introduction a cam follower mechanism is a. Jan 17, 2014 this video explains the concept of cam and follower mechanism used in an engine, with the help of a live example that shall prove to be helpful for engineering students. Analysis and simulation of cam follower mechanism using. The follower shown in figure 4 c is a flatfaced follower. Cam devices are versatile, and almost any arbitrarilyspecified motion can be obtained. Traditionally, many basic forms of motion curves have been developed or applied to cam follower mechanisms, including simple polynomial curves and. The grabcad library offers millions of free cad designs, cad files, and 3d models. Various types of cam follower are used for different types of applications. Cam and follower combination belongs to the category of higher pairs. Most suitable as a guide roller for cam mechanisms and linear motion of automated machines and dedicated machines.

Patel me scholar, department of mechanical engineering, north maharashtra university, jalgaon abstract the objective of this paper is to modelling design and analysis of a cam and follower. However, the manufacturing of cams is expensive and the wear effect due to the. This paper presents a method for designing of a radial cam on the worksheet of mathcad including the calculation of followers displacements, values of its velocities and accelerations, the optimization of the contour of a cam by choosing the. Cam and follower mechanism and their types mechanicalmaster. Cam follower roller bearings, stud type inch and metric. Learn fundamental concepts and terminology learn how to. Cam follower mechanism plays a significant role as it utilized to drive a minute machine component seamlessly. The general kinematic pair of a cam mechanism intechopen. Hexagonal hole eccentric collar mcgill add suffix add suffix add suffix add prefix ina skf iko thk add suffix uu remove suffix r add suffix a ntn add suffix add suffix smith add suffix s add suffix c add suffix b add suffix e. The cam and follower mechanism is widely used for operating the inlet and exhaust valves of internal combustion engines.

One of the major applications of cam mechanism is valve actuation of internal combustion ic engines. Pdf an optimum design of cam mechanisms with roller follower. Learn vocabulary, terms, and more with flashcards, games, and other study tools. G student department of mechanical engineering 1, ambajogai, maharashtra, india 1 email.

Numerical analysis of planar cam follower mechanisms. Pdf in this paper, proper lumpedparameter models of cam systems are discussed as suitable tools for design. Rbc roller cam followers needle roller cam followers lbf. The paper deals with a configuration of a cam mechanism with a fla t follower that is. Mar 07, 20 i make this video by using the 3d via composer. The contact strain of the surface of the contact areas of the said type of. Design of camfollower mechanism using vap function in the. The analysis of cam follower mechanisms, however, is lesser known and not introduced in undergraduate textbooks, even though it is a practical tool.

Pdf a formclosed camfollower mechanism for a breath. The accuracy for this system is depended upon the cam and follower being in contact at all times. In this work an attempt is made to change the flat face of follower to a curved face follower, so that the required point contact. This paper seeks to provide a systematic and straightforward approach for the numerical analysis of planar cam follower mechanisms. A camfollower forms higher pair as they have point contact at the junction. The driver is called cam and driven is called follower. Pdf a computational approach for cam size optimization of. Coding for other cam follower and yoke roller types optional features seals cylindrical o.

The cam accepts an input motion rotary motion or linear motion and imparts a resultant motion linear motion or rotary motion to a follower. Camshaft is the brain of the engine must include cam lobes, bearing. Cam and followers are the example of higher pair due to the line contact between them. This work deals with the follower response determination for a given prescribed cam motion for single dof cam mechanism. Cam and follower mechanism types and functions mechtics. The sources of impact in cam follower mechanisms could be the result of. The output accuracy of the system corresponds to the motion of the follower. Type of cams, type of followers, displacement, velocity and acceleration time. A flatfaced follower consists of a follower that is formed with a large, flat surface available to contact the cam. Kinematic and dynamic study of camfollower mechanism of.

As an example let us combine the parabolic motion curve blended with the. The driver is called the cam and the driven member is called the follower. Apr 01, 2018 a cam is a mechanical member which impart desired motion to the follower by direct contact. Example of cam action concept and definition of cam. Optimization of cam follower mechanism to increase mechanical efficiency mr. Keywords vap function, harmonic function, displacement law, cam follower mechanism, pressure angle. The transformation of one of the simple motions, such as rotation, into any other motions is often conveniently accomplished by means of a cam mechanism a cam mechanism usually consists of two moving elements, the cam and the follower, mounted on a fixed frame. On the runningin behavior of camfollower mechanism. The current cam and follower mechanism in four stroke internal combustion engine employs a flat follower. The follower is known as a radial follower if the line of.

Consequently, this type of follower is used when quick motions are required. Cam and follower design basics design of cam profiles and. A cam is a mechanical device used to transmit motion to a follower by direct contact. Cam and follower definition and types explained with images. The cam and follower mechanism are widely used in automobile industry. Tushar kiran et al analysis and simulation of cam follower mechanism using polynomial cam profile 214 int. An optimum design of cam mechanisms with roller follower for combined effect of impact and high contact loads. A formclosed camfollower mechanism for a breath simulator machine 3 3. From now we will term cam and follower mechanism as cam. Introduction of cams and types of cam and followers. A cam follower, also known as a track follower,1 is a specialized type of roller or needle bearing designed to follow cams.

Cam may be rotating or reciprocating while a follower may be rotating, reciprocating and oscillating. Design of cam and follower system using basic and synthetic. When the motion of the follower is along an axis which is passing through the centre of the cam, then these types of followers comes under the radial followers. The basic purpose of using the cam follower is converting the rotary motion of the cam to the translating or oscillatory motion of the follower. An optimum design of cam mechanisms with roller follower for. Cam followers come in a vast array of different configurations, however the most defining characteristic is how the cam follower mounts to its mating part. A cam follower, also known as a track follower, is a specialized type of roller or needle bearing designed to follow cam lobe profiles. The main purpose of the work presented in this paper was to study the kinematic and dynamic of motion characteristics of the cam follower mechanism of the cutting file machine. Cam mechanisms are one of the basic objects in the design of. Analytical kinematic analysis of cam mechanisms in mechdev.

Mar 18, 20 cam is a very important topic in the kinematics of machines or theory of machines. Solved problems based on cam profiles engineering tutorials. The cam is the driver member and the follower is the driven member. Operationally, it is categorized as a nonconformal contact where the imposed load acting on a relatively small contact area causes the pressure across the lubricant film to drastically increase to the extent that the elastic deformation in the contacting surfaces becomes significant. Pdf cam mechanisms are integral parts of many products.

Erdman and sandor 1997 illustrate the three types of cam design functions in. Cam and follower mechanism in engine theory of machines. This type of follower can be used with a steep cam motion and does not jam. This analysis is an important step for fixing an optimum size of a cam and. Cam and follower is a type of assembly, both works together in any machine element. Cams can provide unusual and irregular motions that may be impossible with the other types of mechanisms. A cam follower roller bearing also called track follower is a specialty roller bearing designed to follow tracks or cams and in a wide range of linear motion systems. Analysis and usage of cams and their followers engineering essay. 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.

Cam is a mechanical member for transmitting a desired motion to a follower by direct contact. Simulation model of cam follower mechanism with 345 polynomial cam profile. The use of a cam and follower mechanism is prevalent in industrial machines. Feb 03, 2016 a cam is a rotating or sliding piece in a mechanical linkage that drives a mating component known as a follower. Pdf the problem in the design of a cam is the analyzing of the. From a functional viewpoint, a cam and follower arrangement is very similar to the linkages. Model cfhra eccentric cam follower with hexagon socket spherical outer ring. Here we are presenting some solved problems based on cam profiles. Here follower response by two methods are presented first one is using johns. The abovementioned knife edge follower, roller follower and flatfaced followers are the radial follower. Introduction cams are widely used in many types of machines because. The follower is pivoted at a suitable point on the frame and oscillates as the cam makes rotary motion. Application of cam and follower types of cams types of cam followers concept and definition.

Optimization of cam follower mechanism to increase mechanical. The cam converts rotary motion of one element into reciprocating linear motion or into oscillatory motion. In this type, as the cam rotates, the follower reciprocates or translates in the guides. The cam follower mechanism designed with the vap function has smaller follower accelerations, as well as lower pressure angles than the one with harmonic function. You can see an application of the cam follower in another article here about the internal combustion engine.