The camfollower mechanism plays an important role in applications such as internal. The software was applied in the design of cam profiles with selected follower and cam functions and the results obtained were found comparable with those obtained from numerical methods and existing software packages. 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. Oh, it would be nice if it a free trial was available. When the machine is running as you want, you can export the cam data for cam. Taylor synopsis a general background to the consideration of tribological factors in cam and follower design is presented as a prelude to the description of the development of computer software for the analysis of the lubrication of any cam and tappet form.
I also included new cam design software output that divides the curve segments up in 0. This may be easier to look at than the output i uploaded. Extreme operating environments, changing size requirements, hightemperature differentials, and caustic chemicals regal engineers respond with a complete selection of standard offerings and. Cad software for cam, mechanism and motion design, analysis and simulation. A general background to the consideration of tribological factors in cam and follower design is presented as a prelude to the description of the development of computer software for the analysis of the lubrication of any cam and tappet form. Cam and follower design basics design of cam profiles.
Cam and follower, motion, mechansims, machine mechanical. The bucket follower is 30mm in diameter, but a later version of the same engine has a 5mm shorter valve stem, placing the bucket follower lower by 5mm with a base circle radius increase of the same 5mm to compensate. 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. This cam follower is made of bearing steel treated with black oxide for. They are based on either needle or cylindrical roller bearings. Cams can provide unusual and irregular motions that may be impossible with the other types of mechanisms.
If a barrel cam is to run quietly while carrying a heavy load at speed, the curves must be very precise which requires specialized cam design software software which deals with things like acceleration. Using matlab or excel software a plot the follower svaj diagram, and b plot the cam shape, c plot the pressure angle vs the cam angle, and d plot the curvature. A heavysectioned outer race design to help withstand shock loading of cam follower operation. The remainder of the stud is not hardened resulting in a ductile stem that provides toughness. With mechdesigner, it is easy to design any number of mechanisms and cams in one model, then analyze, scrutinize and optimize all of them together, so that you can get the best machine performance. Calculate the pitch curve aa, that is, the trace of the pitch point in the inverted mechanism. 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. Animation showing the combined translational and oscillatory motion of a barrel cam. It is normally connected with a prime mover, which rotates it. The cam profile bb is a product of the enveloping motion of a series of rollers.
The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. A cylindrical cam or barrel cam is a cam in which the follower rides on the surface of a cylinder. The inner stud has inch threads manufactured to class 2 tolerances. A cam gear consists of a frame, a cam and a follower. Most suitable as a guide roller for cam mechanisms and linear motion of automated machines and dedicated machines. Assume a cycloidal motion to design the cam, and use a rollerend follower. Cam design equations replace graphics machine design. In the most common type, the follower rides in a groove cut into the surface of a cylinder. Then export dxf to cad or coordinate data to nccam software. Mcgill ccf2sb cam follower, crowned, sealed, inch, steel.
A camfollower mate appears in the featuremanager design tree as cammatecoincident or cammatetangent. The cam follower is a compact bearing with a highrigidity shaft and a builtin needle bearing. A teaching tool for design and analysis of cam and follower. Cam design cat cams has a large database of cam designs available, ready for grinding to suit your custom project. Design a v belt and pulley assembly with motion analysis in solidworks. Cam and follower are widely used for operating inlet and exhaust valve of i c engine. The follower is mated to all of the cam surfaces, allowing the follower to stay in contact with the cam as it rotates. The cam follower mechanism modelling is based on the kinematic and dynamic results. Norton, design of machinery introduction to cam design. Analysis and simulation of cam follower mechanism using. Camfollower types and data fields camfollower description buttons examples analytix cams presents you with two approaches to designing cams.
Request for material recommendation for cam and follower. Design, assemble and also analyse the motion of the cam and follower by using cad software. Cam design and mechanism analysis can be done quickly in an affordable, integrated solution, letting you work back from required endeffector motion to cam follower design or vice versa. Pdf camssoftware program to design and synthesis of cams. The motion of cam usually rotation is transformed into follower oscillation, translation, or a combination of both. Interactive cam mechanism design a cam is a mechanism for transforming one motion type to another. This is accomplished by keeping one or more followers in contact with the surface of a rotating cam.
At the end of the design, the cnc code for manufacturing the designed cam can also be produced through our webbased cam design system. Camtrax standard cam types include cylindrical cams, plate aka disk cams and linear cams. The cam is deigned for a roller follower which is set radially. The cam follower has a threaded studtype design for throughhole or threaded mounting, and a hexagonal hole on the flange end that provides greater holding power during mounting than a screwdriver slot. Request for material recommendation for cam and follower request for material recommendation for cam and follower john2004 mechanical op 23 mar 06 19. Objectoriented cam design through the internet springerlink. Figure 616 the trace point of the follower on a disk cam. This article will discuss the calculation method of the velocity of cam follower. The research results provide a basis for the design and application of this cutting device. Inner studs are induction heat treated in the roller path and flange surfaces only.
Model design and animinate the cam and follower by using design software. The impact force between the cam and oscillating follower is small, and the stability of mechanism can be effectively guaranteed. Selecting different motion synthesis is a snap with camtrax. Simulation and prototype experiments show that the motion performances of the cam cutting mechanism meet design requirements. In other words, the contact is unique and occurs at a single point. With analytix simulation software, you can optimize the camfollower. Followertocam with this method you can quickly and easily create cam profiles based on existing follower requirements. The name of the software package is cams and it is written in a program language delphi. Then export dxf to cad or coordinate data to nc cam software. We will discuss the differential method for finding relation between the angular velocity of a cam and the linear velocity of a follower. User friendly edit boxes allow for the complete input of motion types and their properties, along with the characteristics of the cam and its follower.
Cam design and mechanism analysis can be done quickly in an affordable, integrated solution, letting you work back from required endeffector motion to camfollower design or vice versa. The software tool has mainly been developed to enhance student learning, but it can readily be used to design and analyze cam mechanisms for industrial. Thus, cam follower mechanisms with a higher follower response rate can be designed using the polynomial profiles. Instead of an inner ring, they have a threaded solid stud pin. In this tutorial,weve tried to follow the standard procedure of designing a cam. Cam mechanisms are widely used because with them, different types of motion can be possible. The early design methods are discussed on the cam design history page, while currently used methods are described here. It has a curved or grooved surface which mates with a follower and imparts motions to it. What follows are diagrams for displacement, velocity and acceleration, as well as an animated simulation of the cam profile and the follower. These are used in feed mechanism of automatic lathe machine. The mechanism can be viewed from any side and the valve may be inclined at any angle. Thats the inverse of one cam follower running in a sinuous groove. Flat, plate, groove, conjugate, barrel, globoidal, ferguson, roller gear drives. However, the manufacturing of cams is expensive and the wear effect due to the.
Once a camfollower system is designed, animation of the camfollower system can be performed. Software for modeling cam and follower or servodriven packaging, assembly and textile machines, mechanisms with complex motion requirem mechdesigner, by psmotion, is machine design software for the modeling of packaging, assembly and textile machines. These cams are principally used to convert rotational motion to linear motion parallel to the rotational axis of the cylinder. Mcgill is the one source solution for all your cam follower needs. As developers of the first cam follower bearing, our engineering team leads the industry in cam follower design. Camtrax cam design software javelin store javelin technologies. Before you analyse contactforce and contactstress, you need to reconfigure the model so that is transfers the forces correctly between the cam and the follower. It can be designed to produce almost unlimited types of motioning the follower.
The create cartesian geometry for cam follower mechanisms is part of the 4sthead design software suite. Cam design software is fully integrated into mechdesigner you can model then let mechdesigner calculate the cam coordinates of just about every cam type, including. This concept is important in cam profile design and is called the trace point of follower. The most important deficiency of some of the early design methods is that they gave jump discontinuities in acceleration, i. Analytix cams mechanical engineering software saltire software.
1489 365 287 758 1615 894 1232 25 630 1364 1452 798 938 515 164 1584 1409 1465 626 532 767 1300 591 611 7 214 389 52 408 55 62 422 1003 881 300