Easily convert rotary motion to reciprocating motion. The topic is a part of the theory of machine stream that deals with the study of. For the love of physics walter lewin may 16, 2011 duration. View application of cam and follower ppts online, safely and virusfree. The greatest distance or angle through which the follower moves or rotates 25. Cad cam cim ebook pdf ppt download faadooengineers. Cam and follower the bumps on a cam are called lobes. Types of cam follower flat ended this cannot be used for concave profiles.
However, the manufacturing of cams is expensive and the wear effect due to the. Misumi offers free cad download, short lead times, competitive pricing, and no minimum order quantity. The accuracy of the output or the follower will depend on the cam and follower being in contact at all times. Follower driven in a cam follower pair, the cam normally. A cam is a rotating machine element which gives reciprocating or oscillating motion to another element known as follower. We will discuss the differential method for finding relation between the angular velocity of a cam and the linear velocity of a follower. Real life example key phrases our cam and follower by. The unit can be installed and maintained without concern for installation space, thereby boosting operating e. Cam follower with grease nipple a hex wrench can be used to. The video explains the entire construction and working of a cam and follower. Solidworks animation of a basic cam follower mechanism. A circle drawn from the cam center and passes through the pitch point is called pitch circle stroke. This allows significant reductions in processing and assembly manhours by avoiding alignment with the cam groove and precise machining of the. 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.
Softer or harder materials may result in decreased life, particularly under high loads. 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. Study on the camfollower contact sae international. It wears slower than a knifeedge follower, since the points of contact move across the surface of the follower. Cam rollers are also known as cam followers or track followers and are a specialised form of roller or needle bearings which is designed to follow tracks or cams in a linear motion system. Mcgill offers the broadest range of cam follower bearings in the marketplace. A cam follower, also known as a track follower, is a specialized type of roller or needle bearing designed to follow cam lobe profiles. Tushar kiran et al analysis and simulation of cam follower mechanism using polynomial cam profile 214 int. Cam mechanisms are widely used because with them, different types of motion can be possible. Cam follower roller bearings stud type track follower. Nut, washer, and grease nipple are available as accessories. Cam and follower design basics design of cam profiles.
Disc cam with reciprocating follower having knife edge. The relevance and role of cams in modern machine systems has made their continuous study necessary and. Cam a mechanical device used to transmit motion to a follower by direct contact. The following picture shows three followers which stay in contact with the cam as it rotates. In other words, the contact is unique and occurs at a single point. In a cam follower pair, the cam normally rotates while the follower may translate or oscillate. Ppt cam and follower powerpoint presentation free to. Simulation model of cam follower mechanism with 345 polynomial cam profile. It allows you to mate a cylinder, plane, or point to a series of tangent extruded faces, such as you would find on a cam. The objective of this analysis is the dynamic study, which is divided into kinematic and kinetics for both flat faced and offset roller follower in translating motion. The square cam illustrated has four lobes, and lifts the follower four times each revolution. Mcgill camrol cam follower bearings ahr international.
Ppt cam and follower powerpoint presentation free to view id. Analysis and simulation of cam follower mechanism using. Mcgill is the one source solution for all your cam follower needs. Driver member cam driven member follower frame to support the cam and guide the follower application. Cam and follower lecture free download as powerpoint presentation. Sara g, arissa l, serenidy m, salma r wms pltw period 3 types of cam and followers flat follower roller follower pointknife follower curved shoe follower. Terms used in cam and follower theory of machine youtube. Learn fundamental concepts and terminology learn how to. Mcgill cf 34 sb flat cam follower inch camrol cf series, 0. Animation showing the combined translational and oscillatory motion of a barrel cam.
A cam is a solid body and its shape in conjunction of followers type defines a movement that can be too difficult or even impossible to reproduce with others mechanisms. If i were you, i would create a zero offset surface thicken surface offset 0 on the cam faces and extend it on the sides. Thrust disk type cam followers these bearings have special resin thrust disk washers superior in wear and heat resistance between the. The cam and the follower have a line contact and constitute a higher pair. Motion of the follower as the cam rotates the follower moves upward and downward. Camfollower report final me 4201 machine design lab. The velocity of any cam follower can be calculated using the deferential method provided you have the equation relating the angular. The cams in a car engine have a single lobe they will move. Type of cams, type of followers, displacement, velocity and acceleration time curves for cam profiles. A camfollower mate is a type of tangent or coincident mate. Me 4201 machine design lab section 3 group 4 experiment 4camfollower experiment jordan gautreau khalil hamed dallas amond michael mannino abstract a camfollower system is a very simple mechanism used to control and convert one type of motion to another type of motion. Cams are mechanical devices that convert rotary oscillating or linear motion into a linear or reciprocating motion to carry out useful work. Cam followers with urethane roller, crowned, with hex.
Cam follower nominal life the basic static load rating c 0 refers to the static load with constant direction and magnitude, under which the calculated contact stress in the center of the contact area between the roller and the raceway under the maximum load is 4000 mpa. Base circle is the smallest circle, drawn tangential to the cam profile. What is cam and follower types of followers explained with. What are the applications of different types of cam. Cam and followers are mainly used to transfer rotory motion cam into reciprocating of oscillating motion of follower. 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. Often used on conveyor belts and process transfer lines, cam rollers allow the smooth and even distribution of loads. Accuracy cam followers are manufactured with the dimensional tolerances shown in table 4. 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. 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. The cam follower is a compact bearing with a highrigidity shaft and a builtin needle bearing. Cfhab a cam follower where precision adjustment of the position is easily performed by turning the stud, as the mounting shaft and head sections of the stud are eccentric by 0.
The cam and follower is a device which can convert rotary motion circular motion into linear motion movement in a straight line. Trace point is a point on the follower, trace point motion describes the movement of the follower. This article will discuss the calculation method of the velocity of cam follower. Most suitable as a guide roller for cam mechanisms and linear motion of automated machines and dedicated machines. A free powerpoint ppt presentation displayed as a flash slide show on id. It is normally connected with a prime mover, which rotates it. Pitch curve is the path generated by the trace point as the follower is rotated about a stationery cam. Cam and follower free download as powerpoint presentation. The driver is called the cam and the driven member is called the follower. A cam is a mechanical device used to transmit motion to a follower by direct contact. Cam followers are often used on conveyors, process transfer lines, such as those used int industries such as.
Cam and follower constraint in inventor is fulfilled by transitional constraint. Next, create transitional constraint between the follower moving face and the cam zero offset face transition face. Experimental study of engine camfollowers enrico ciulli 1, bruno piccigallo 2, dagoberto vela 1department of mechanical, nuclear and manufacturing engineering, university of pisa, italy email. Presentation on cam an followers linkedin slideshare. By rotating the cams in the figure below, the bars will have either translational or oscillatory motion. Cam and follower the linear cam moves backwards and forwards in a reciprocating motion. Norton, design of machinery introduction to cam design. Ppt mechanism powerpoint presentation free to download. A familiar example is the camshaft of an automobile engine, where the cams drive the push.
1295 1349 535 379 1490 144 916 711 879 1274 862 1272 339 1336 936 991 218 160 873 785 811 1248 22 1111 199 1104 213 331 1466 547 1098 391 1214 1324 1109 1228 540 1095 1453 1257 1007 650 902 1393 45 288 944