It is the surface area of a cam where follower touches. Pdf development of ball point type follower with single ball. Cam follower are classified into two main types stud types and yolk types. Knief edge follower, roller follower, spherical follower, flat. How cam and follower mechanisms work bright hub engineering.
The working of both convex and concave types surfaces is same but applications are different. Cam mechanisms are widely used because with them, different types of motion can be possible. The thk cam follower is a compact and highly rigid bearing complete with or without a shaft. 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. In a cam follower pair, the cam normally rotates while the follower may translate or oscillate. Types of cam and followersbasic of theory of machine. Explain what a cam is, how it is used, and the typical types of cams identify force closed and form closed followers and explain the benefits and limitations of each describe the primary types of cam motion programs introduction to cam design source. Various types of cam follower are used for different types of applications. May 02, 2020 the mechanism for cam and the mechanism for follower depend upon each other so that the main mechanism of cam and follower. The mechanism for cam and the mechanism for follower depend upon each other so that the main mechanism of cam and follower.
This type of follower can be used with a steep cam motion and does not jam. Pdf on dec 29, 2017, y lethwala and others published development of ball point type follower with single ball groove type cam find, read and cite all. Types of the cam follower types and features cam follower with grease nipple model cfab speci. Norton, design of machinery introduction to cam design.
Cf 12v uur table 1 types and model numbers of cam followers type shape stud with a hexagon socket stud with a driver groove with a tapped hole for greasing. Eccentric cam follower models cfhab, cfha specification table1922. As a result, the manhours for machining and assembly can significantly be reduced because it is unnecessary to align the cam follower with the cam groove and machine the mountinghole area with precision. Types of cams and followers august 20, 2018 admin 2 comments. Once a suitable output motion is defined, the profile of the cam itself can be generated, often through special software. It contains roller bearings and is used as a guide roller for cam mechanisms or linear motion. The software includes numerous combinations of follower types e. The cam converts rotary motion of one element into reciprocating linear motion or into oscillatory motion. High load capacity by designradial gap is smaller than within the general needle roller bearings, alleviating impact load and increasing. Design of cam and follower system using basic and synthetic. Appropriate displacement patterns are to be selected for this purpose, before designing the cam surface. Table 1 type of cam followers type metric cf series heavy duty type cam followernucf miniature cfs series inch series standard type cam follower cf high carbon steel made solid eccentric stud type cam follower cfes eccentric type cam follower cfe stainless steel made high carbon steel. A teaching tool for design and analysis of cam and follower.
Aug 20, 2018 it has two types one is concave surface and other is convex surface type. The cams are usually rotated at uniform speed by a shaft. The driver is called the cam and the driven member is called. Scfs series cam follower assembly plaincylindrical stud type concentric screwdriver slot full complement needle bearings regreasable additional notes for lubricated threads, use half the maximum clamping torque value shown. B10011 high performance series for steelmaking and rolling equipment catalog.
B2011 bearings and related products for continuous casting machines catalog. A cam is a mechanical device used to transmit motion to a follower by direct contact. Types and model numbers of the cam follower the cam follower is divided into several types as indicated in table 1. Cams theory of machines engineering reference with. A cam follower, also known as a track follower, is a specialized type of roller or needle bearing designed to follow cam lobe profiles. In this type, as the cam rotates, the follower reciprocates or translates in the guides. Types of cam and followers basic of theory of machine a cam is a rotating machine element which gives reciprocating or oscillating motion to another element known as follower. The cam is assumed to rotate at a constant speed and the follower raises, dwells, returns to its original position and dwells again through specified angles of. Type of cams, type of followers, displacement, velocity and acceleration time curves for cam profiles. Learn fundamental concepts and terminology learn how to. One analyzes four types of cam mechanisms find, read and cite all the research. For cam followers, the types shown in table 1 are available. Cams are classified according to the direction of displacement of the follower with respect to the axis or oscillation of the cam.
Cam arrangements can be found in power generation, wastewater treatment, recreation, automation, and metal processing sectors, among many others. Cam and follower mechanism and their types mechanicalmaster. Cam and follower definition and types explained with images. Cam followers skf cam followers studtype track rollers are designed to run on all types of tracks and to be used in cam drives, conveyor systems, etc. 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. The cam is the driver member and the follower is the driven member. The mechanism of cam and follower is essential in the engineering field and has many different functions to the different machines. The cam and the follower have a line contact and constitute a higher pair. Skf cam followers studtype track rollers are designed to run on all types of tracks and to be used in cam drives, conveyor systems, etc. Standard type cam followers these are the basic type bearings in cam follower series. 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. Crowned cam followers effectively reduce corner loading in rotary cams and turntables. Obviously, the follower begins and ends the cycle at the same position. They are based on either needle or cylindrical roller bearings.
Disc or radial cams in these the working surface of the cam is shaped that the reciprocation or oscillation of the follower is in a plane at right angles to the axis of the cam. The cam and follower mechanism are widely used in automobile industry. B2021ex drive shafts for steel and industrial application. Dec 11, 2019 the cam is usually located on shafts and rotates at the uniform speed, whereas the follower motion will be based on the shape of the cam. Pdf the paper presents an original method to determine the efficiency of a mechanism with cam and follower. A circumferential cut is made on the periphery of the cam for the rotation of the follower. The follower is pivoted at a suitable point on the frame and oscillates as the cam makes rotary motion. In hydraulic systems, the main mechanism is cam and follower mechanism. In printing machinery, the mechanism of cam and follower helps the screen to be printed. The cam follower is a compact bearing with a highrigidity shaft and a builtin needle bearing. Cams can provide unusual and irregular motions that may be impossible with the other types of mechanisms. A1916 a hexagonal socket is provided on both stud ends, and a grease nipple for greasing is tted.
Check the schematic representation of the cylindrical cam with both the reciprocating follower and the oscillating follower below. The cam has a very important function in the operation of many classes of machines, especially those of the automatic type, such as printing presses, shoe. Scfs series cam follower assembly a b c d f fl sd sl t. Identify force closed and form closed followers and explain the benefits and limitations of each. Cams theory of machines engineering reference with worked. A follower is a mechanical component concerning which, the cam rotates in an oscillatory or circular motion. The follower is known as a radial follower if the line of. Excellent rotational performance designed for outer ring revolution. Mar 18, 20 introduction of cams and types of cam and followers. A a hexagonal socket is provided on both stud ends, and a grease nipple for greasing is. A cam follower is a bearing that incorporates needle style rollers between a stud and a thick outer ring. Overview the typical functions of a cam follower are to provide antifriction support of linear movement or to follow the surface of a cam. What are the applications of different types of cam followers. Some of the applications of cam and follower are discussed below.
Clevis mounting provides support on both sides of the cam follower and permits use of a high strength pin. Mar 24, 2019 cam and follower combination belongs to the category of higher pairs. Introduction of cams and types of cam and followers. Their outer roller is slightly curved in a crown shape to keep the follower centered on misaligned or nonflat surfaces. Description of the cam follower p 5 featuresofthecamfollower 1. Disc cam with reciprocating follower having knife edge.
What are the applications of different types of cam. As you already know that these cam and the follower mechanisms were used for operating the inlet and. Coding for other cam follower and yoke roller types optional features seals cylindrical o. Types of follower motion 2 rotating oscillating translating. The follower shown in figure 4 c is a flatfaced follower. Iko designs and manufactures a broad selection of cam followers to meet the diverse needs of applications including machine tools, industrial robots, electronic parts production and office automation equipment. A flatfaced follower consists of a follower that is formed with a large, flat surface available to contact the cam.
It is a popular type of cam follower provided with a driver groove on the head of the stud. Therefore, lubrication and mounting from both directions is possible. What is cam and follower types of followers explained. So let us find some of the information related to cam and follower to know more about it. Cam and follower combination belongs to the category of higher pairs. Outer ring seal side plate stud mavin the webstore. Cam and followers are mainly used to transfer rotory motion cam into reciprocating of oscillating motion of follower. Cam and follower design basics design of cam profiles and. Various types are lined up in cam follower series, including the caged type, full complement type, shield type, sealed type, type with crowned outer ring, type with. 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. Cam and follower is a type of assembly, both works together in any machine element. Automated types of machinery, cam and follower are used in different parts which are automated in motion. Nov 16, 2014 ira chaleffs styles of followership 2003 proposes four distinct follower types. Scfs series cam follower assembly a b c d f fl sd sl t xh.
In that case, the mechanism is dependent on the fluid pressure. With its outer ring rotating whilst keeping contact with the mating surface. Most suitable as a guide roller for cam mechanisms and linear motion of automated machines and dedicated machines. Cam followers 3 cam followers cam followers are available in two types. Models with stud diameters ranging from 3 to 30 mm are prepared, and are suitable for a. 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. Instead of an inner ring, they have a threaded solid stud pin.
However, a roller follower can possibly jam during steep cam displacements. Feb 03, 2016 however, a roller follower can possibly jam during steep cam displacements. Ira chaleffs styles of followership 2003 proposes four distinct follower types. In the cam follower with seals, a special thrust washer is employed for the sliding surface inside the bearing to improve heatseizure resistance. Cam is a mechanical element which is used to deliver the reciprocating or oscillating motion to another machine element known as follower. In cylindrical cam, the follower will be reciprocated or oscillates in a direction parallel to the cam axis. B20121 cylindrical roller bearings for multiroll mill backup rolls catalog. Cam and follower design basics design of cam profiles.
The follower system revolves with respect to the center line of the vertical shaft. It has two types one is concave surface and other is convex surface type. The camrol cam follower from mcgill was designed to withstand the intermittent shock, loading. The follower arm swings or oscillates in a circular arc with respect to the follower pivot. This mechanism is very important in modern day engineering to incorporate a system with controlled movement. The cam is usually located on shafts and rotates at the uniform speed, whereas the follower motion will be based on the shape of the cam. The follower rides in the groove at its cylindrical surface. The wheel creates rotational motion when the water is falling down, this wheel is directly connected to a bar, which is also connected to a cam and follower. The driver is called the cam and the driven member is called the follower. However, the manufacturing of cams is expensive and the wear effect due to the.
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