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. Nptel video lectures, iit video lectures online, nptel youtube lectures. You can see an application of the cam follower in another article here about the internal combustion engine. Another part associated with the cam is called follower. This is a white plastic clip that resembles a tuning fork. Cam followers, roller followers select, configure, order. From now we will term cam and follower mechanism as cam. Computer integrated manufacturing cim encompasses the entire range of product development and manufacturing activities with all the functions being carried out with the help of dedicated software packages.
This is likely to prevent further damage to the mechanisms. In this type, as the cam rotates, the follower reciprocates or translates in the guides. Asok kumar mallik department of mechanical engineering iit kanpur. This enables student to learn various experiments of different mechanism like cam follower mechanism, gears, gear train etc. The contour of the working surface of the cam tracer point. Cam and follower mechanism types and functions mechtics. Analysis and simulation of cam follower mechanism using. Background and theory the cam follower experiment is a.
Before going to the actual design of cam profile, lets look at the basic terminologies. The cam follower is missing from the back of the cam lock causing disengagement of the actuator rod. Cam is a rotating element which provides an oscillation or reciprocatory motion to another part connected with the cam. The follower arm swings or oscillates in a circular arc with respect to the follower pivot. Application of cam and follower types of cams types of cam followers concept and definition. The cam and the follower have a line contact and constitute a higher pair.
Cam and follower mechanism and their types mechanicalmaster. The computer aided design and manufacturing notes pdf cad cam notes pdf file. Norton, design of machinery introduction to cam design. Computer aided design lecture series on computer aided design by dr. Introduction the cams are usually rotated at uniform speed by a shaft, but the follower motion is predetermined and will be according to the shape of the cam. Radial or disc cams a cam in which the follower moves radially from the centre of rotation of the cam is known as a radial or a disc cam fig. In this way students will understand the practical applications of. There are three major parts in the setup as shown below. Knief edge follower, roller follower, spherical follower, flat faced follower. Computer aided design nptel online videos, courses iit. When the flanks of the cam connecting the nose and base circles are of convex circular arc, such cams are referred as circular arc cams. What is cam and follower types of followers explained. If i try to mate anything else to the cam, it locks in the highest or lowest position. Cam and follower mechanism is a widely used method of motion transformation.
The data required for various functions are passed from one application software to another in a seamless manner. Thrust disk type cam followers these bearings have special resin thrust disk washers superior in wear and heat resistance between the. The cam shown is a pear shaped cam named after its shape. Cams and followers video lecture from chapter cams and followers in theory of machine for mechanical engineering students. Currently i am using wrap and then deboss to create the cam profile. The size of the base circle determines the size of the cam. I am trying to make a barrel cam and follower assembly. Analysis and usage of cams and their followers engineering. Module 10 lecture 2 kinematics of machines youtube. Cam introduction, classification of cam and follower based on different aspects, follower motion, derivation of velocity, acceleration and jerk for different cases, tangent cam. The follower is known as a radial follower if the line of. In a cam follower pair, the cam normally rotates while the follower may translate or oscillate.
If this clip is missing or broken, contact your purchasing dealer. Cam followers, roller followers misumi online shop select. It is normally connected with a prime mover, which rotates it. The universal cam follower is available in eccentric and crowned versions, and with standard and heavyduty studs. Explain what a cam is, how it is used, and the typical types of cams. This course is intended for second year diploma automotive technology students with emphasis on study of basics on mechanisms, kinematic analysis of mechanisms, gear drives, can drives, belt drives and study on governor mechanisms. What are the applications of different types of cam. A camfollower forms higher pair as they have point contact at the junction. The velocity of any cam follower can be calculated using the deferential method provided you have the equation relating the angular.
Whenever i try to mate the follower to the inner profile of the cam, the follower ends up crooked at certain points along the cam. It is the mechanical portion of amachine that has the function of transferring motion and forces from a power source to an output. These problems have been solved by many methods using graphical methods 1, 2, which take the effect of cam motion on the curvature of the cam profile and the amount of offset of the follower that need in a specific. Learn fundamental concepts and terminology learn how to. Introduction to mechanisms and kinematics basic definitions machines are devices used to accomplish work. As the cam continues to rotate the arm begins to rise as seen in diagram 4.
If you find any issue while downloading this file, kindly report about it to us by leaving your comment below in the comments section and we are always there to rectify the issues and eliminate all the problem. Computer aided design and manufacturing notes pdf cad cam pdf notes cad cam pdf notes file to download are listed below please check it latest material links. Computer aided kinematic and dynamic analysis of cam and follower. However, the manufacturing of cams is expensive and the wear effect due to the. How to download all of the lectures in pdf for a course in. Learn vocabulary, terms, and more with flashcards, games, and other study tools. One response to kinematics of the camfollower mechanism.
The cam drives the two tools positively away from the danger zone the plunger is moved to the left, and the workhead is moved upwards. A cam is a rotating machine element which gives reciprocating or oscillating motion to another element known as follower. Rotating cam, translating follower figure 68 simdesign translating cam. Cam follower with tapped greasing hole model cft b3. If there is a jam, the cam follower cannot return move with the cam. Cam follower mechanical engineering general discussion. D r s1 s1 stud diameter outer main dimensions diameter outer ring width threaded overall length shoulder height f d model no. Models with stud diameters ranging from 3 to 30 mm are prepared, and are suitable for a. A cam follower, also known as a track follower, is a specialized type of roller or needle bearing designed to follow cam lobe profiles.
Simulation model of cam follower mechanism with 345 polynomial cam profile. Comparison of cam and servomotor solutions to a motion problem. Slider crank mechanism is mainly used to convert rotary motion to a reciprocating motion or vice versa slider crank mechanism is composed of three important parts. Module 10 lecture 1 kinematics of machines youtube. This enables student to learn various experiments of different mechanism like camfollower mechanism, gears, gear train etc. Ta202a manufacturing processes ii mechanisms iit kanpur. Background and theory the cam follower experiment is a representation of a mechanical system in 4 which a cam is used to increase the mechanical efficiency of the system. A simple toy based on a cartoon character ed the handyman is controlled by a cam and follower.
Introduction of cams and types of cam and followers. As the cam rotates in an anticlockwise direction, the. Cams can be shaped in any number of ways and this is determined by the way the. With the rotation of the cam, the follower the shaft with the roller at bottom in the above picture gets oscillated or translated according to the profile of the cam. This article will discuss the calculation method of the velocity of cam follower. The point at the knife edge of a follower, or the center of a roller, or the center of a spherical face. 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.
One response to kinematics of the cam follower mechanism. Tushar kiran et al analysis and simulation of cam follower mechanism using polynomial cam profile 214 int. The follower system revolves with respect to the center line of the vertical shaft. In cam follower system the cam size minimization is one of the important topics in cam mechanism design. I have attached another file to understand the connection betwwen the cam and follower. Standard type cam followers these are the basic type bearings in cam follower series. The crank which is the rotating disc, the slider which slides inside the tube and the connecting rod which joins the parts together. Comparison of cam and servomotor solutions to a motion. Mechanical engineering kinematics of machines nptel. A cam is a mechanical member which impart desired motion to the follower by direct contact. Cam follower systems, synthesis of roller cams, cam profiles. Additionally, misumi offers a variety of cad data for free download. Generally, manual handling in industries has been reduced to the minimum. The grabcad library offers millions of free cad designs, cad files, and 3d models.
Cam mechanisms are widely used because with them, different types of motion can be possible. Follower driven in a cam follower pair, the cam normally rotates while the follower may translate or oscillate. You can find them according to your branch and subject in the below link national mission on education through ict this was initiated by iit madras. Join the grabcad community today to gain access and download.
A cam is a mechanical device used to transmit motion to a follower by direct contact. Introduction the controlled movement of parts or a controlled application of force is a common requirement in the industries. The last step of dynamic analysis of cam mechanism was to find out some forces which operate in spring and also in pin labeled as a point a when is the cam mechanisms in motion. Rotating camrotating follower figure 69 simdesign oscillating cam. Cam and follower free download as powerpoint presentation. Simple harmonics, constant velocity and acceleration types, displacement, velocity and acceleration of follower,cams with specified contours. The size and the course of force of spring and also the course of force of pin are shown in figure 10 and figure 11 4. You will find all pdfs and also as mp3 file for all video lectures which are in nptel. Madhusudan rao department of mechanical engineering,iit delhi. What are the applications of different types of cam followers.
Cams can provide unusual and irregular motions that may be impossible with the other types of mechanisms. Cam and follower design basics design of cam profiles and. If there is a jam, the camfollower cannot return move with the cam. The follower is pivoted at a suitable point on the frame and oscillates as the cam makes rotary motion. Example of cam action concept and definition of cam. These operations are performed mainly by using electrical machines or diesel, petrol and steam engines as a prime mover. These advantages include motion function flexibility, relatively compact size, straightforward design principles, and a large mechanical advantage. For example, the product data is created during design. Cam and follower definition and types explained with images.
What is cam and follower types of followers explained with. Proper design of cam and follower is required for perfect tuning between opening and closing of valves with cam shaft speed. Cam followers, roller followers misumi online shop. A cam follower, also known as a track follower,1 is a specialized type of roller or needle bearing designed to follow cams. A spring is, usually, used to maintain the contact between the cam and t he follower. Cams classification of cams and followers, nomenclature, description and analysis of follower motion, pressure. Research article cam follower mechanism simulation. Warranty ntn warrants, to the original purchaser only, that the delivered product which is the subject of this sale a will conform to drawings and specifications mutually established in writing as applicable to the contract, and b. More than 14 million products are available in our online shop. The smallest circle drawn, tangential to the cam profile, with its center on the axis of the camshaft. Mar 18, 20 a cam is a mechanical device used to transmit motion to a follower by direct contact. The driver is called the cam and the driven member is called the follower. Cam may be rotating or reciprocating while a follower may be rotating, reciprocating and oscillating.
Sep 16, 2017 cam and followers are mainly used to transfer rotory motion cam into reciprocating of oscillating motion of follower. Analysis and usage of cams and their followers engineering essay. Cam and followers are mainly used to transfer rotory motion cam into reciprocating of oscillating motion of follower. The cam transfers rotational motion into linear motion by rotating the cam by a shaft connected to an electric motor. Mar 24, 2019 cam and follower combination belongs to the category of higher pairs. This information provided by roller bearing company of america, west trenton, n. A familiar example is the camshaft of an automobile engine, where the cams drive the push. In the event of an emergency, use the unlocking method described above or contact hon customer service at 800. Cams cam a mechanical device used to transmit motion to a follower by direct contact. As the cam rotates in an anticlockwise direction, the follower falls diagram 2 and so does the arm of the toy. Cam and follower design basics design of cam profiles. Apr 01, 2018 a cam is a mechanical member which impart desired motion to the follower by direct contact. 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. Cam and follower are widely used in regulating, opening and closing of valves inlet and exhaust in the internal combustion engines.
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