The enlarged ends of the rods butt against each other with a common sleeve over them. Analysis of knuckle joint of various materials using cae tools. A knuckle joint is understood to be a hinged joint in which. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. Joint probability is the likelihood of two independent events happening at the same time. The suitable design is proved through the probabilistic analysis of the design parameters and material properties of the model. Periasamy abstract the aim of the present project is to study the stresses in knuckle joint using analytical method. Allowable stresses are 100 nmm2 in tension, 70 nmm2 in shear, 150 nmm2 in crushing.
Automated design and modelling of knuckle joint yaswanth peddireddy1 s. Following are the three commonly used cotter joints to connect two rods by a cotter. What is the difference between cotter joint answer sahil knuckle joint is used to connect two rods whose axes either coincide or intersect and lie in one plane, which are subjected to transmit axial tensile force on other hand cotter joint is used to connect two coaxial rods, which are subjected to either axial force or axial compressive. Knuckle joint is named so because it is free to rotate about the axis of a knuckle pin. The taper varies from 1 in 48 to 1 in 24 and it may be increased up to 1 in 8, if a locking device is provided. A cotter joint is a simple and compact connection and is easily assembled and disassembled. Now this kind of cotter joint is known as a socket and spigot type cotter joint. A mechanical joint is a section of a machine which is used to connect one or more mechanical part to another.
A cotter is a flat wedgeshaped piece of steel which is used to connect rigidly two rods which transmit motion in the axial direction tensile or compressive forces without rotation. This permits design of the motion characteristics in accordance with the requirements of. Threaded fasteners bolted joints including eccentric loading, knuckle joints, cotter joints. Threaded fasteners bolted joints including eccentric loading, knuckle joints, cotter joints welded joints. Design of various types of riveted joints under different static loading conditions, eccentrically loaded riveted joints. The allowable stresses are 65 mpa in tension, 50 mpa in shear and 83 mpa in crushing. The knuckle joint is a type of joint which is used in steering system in between the steering rod and pinion of the steering gear, as the line of the action axis of both the mechanical parts are intersecting and lies in different planes, so it is. Very high tightening force due to wedge action, which prevents loosening of parts in service. A knuckle joint is used to connect two rods which are under a tensile load. Failure of cotter joint may causes accident, so it is necessary to design cotter joint to. Cut section of socket and spigot joint 3272012 2 hareesha n g, dsce, blore78. Design procedure of cotter joint, socket and spigot joint.
This study changes the existing material made of gcd45 to al6082m and recommends the lightweight design of the knuckle as the optimal design technique to be installed in small cars. Knuckle and ballandsocket joints engineering design, iit. Pdf dimensional calculations of knuckle joint assembly by. Design of solid and hollow shafts based on strength, rigidity and critical speed keys. It is specially designed to withstand tensile loads. Design a knuckle joint to connect two mild steel b. Sleeve cotter joint pdf the working of the cotterandsleeve and cotterand gib are shown below.
Structural optimization of a knuckle with consideration of. Pdf transient analysis and optimization of a knuckle joint. Knuckle joint pin starting ansys 6 the main utility window can be broken up into three areas. All the above parts can be visualized if you take a look at the exploded view shown below. Pdf design of machine elements third edition maharshi pilaka.
Design and analysis of knuckle joint stress mechanics. When there is a requirement of a small amount of flexibility or angular moment, knuckle joint is used. A knuckle joint is used to connect the two rods which are under the tensile load when there is requirement of. Now, the cotter will rest against this part so therefore, there is a chance. The parts and assembly of the knuckle joint and ballandsocket joint are shown below. Design a knuckle joint to connect two mild steel bars under a tensile load of 25 kn. Coaxial holes are provided in the fork end, eye end and. Abstract weight reduction is now the main issue in automobile industries. Here is the diagram showing the exploded view of knuckle joint. In a sleeve and cotter joint, the cut slots are always made a little bit wider than the width of the cotters in order to promote wedging action of the cotters over the slots. A knuckle joint is a mechanical joint used to c onnect two rods which are under a tensile load, when there is a requirement of small amount of flexibility, or angular moment is necessary. Cotter joint article about cotter joint by the free dictionary.
A free powerpoint ppt presentation displayed as a flash slide show on id. Cotter joint a cotter joint is used to connect rigidly two coaxial rods or bars which are subjected to axial tensile or compressive forces. Design of knuckle joint a knuckle joint is used to connect two rods which are under the action of tensile load, when small amount of flexibility or angular moment is necessary. Jun 26, 2017 4b engineers whtsapp group for 2020,2021,2022 pass out students 4b engineers whtsapp group 2019 pass out stu. This permits design of the motion characteristics in accordance with the requirements of the parts to be. The joint allows a small angular moment of one rod relative to another. The locking device may be a taper pin or a set screw used on the lower end of the cotter.
Reliability is defined as the probability that a system or product will successfully. Let a be the event it rains today and b be the event that it rains tomorrow. Mechanical forging presses with knucklejoint partspecific motion characteristics. Some standard proportions for dimensions of the knuckle joint are taken as. Mechanical forging presses with knuckle joint partspecific motion characteristics.
As seen in the assembly the knuckle joint has main four parts. A knuckle joint is a mechanical joint used to connect two rods which are under a tensile load, when there is a requirement of small amount of flexibility, or angular moment is necessary. A cotter is a flat wedgeshaped piece of steel as shown in figure4. Ppt knuckle joint powerpoint presentation free to view. There is always axial or linear line of action of load.
A cotter is a flat wedge shaped piece of rectangular crosssection and its width is tapered either on one side or both sides from one end to another for an easy adjustment. Unit 2 design of temporary design of temporary connections. The link drive system of the mml2 developed by schuler can be made very flexible during the design of the press. Designing and building furniture you have to consider a lot. View notes ch12 from mechanical 403 at anna university chennai regional office, coimbatore. Here, catia v5 software is used to create components of knuckle joint. Design of gib and cotter joint for strap end of a connecting. Design of temporary unit 2 design of temporary connections connections structure 2. Study and analysis of knuckle joint with the replacement of material by using teflon. Contents contents cotter and knuckle joints c h a p t e r n 431 12 cotter and knuckle joints 1. The procedure to generate double eye is given below. Cotter and knuckle joints understanding engineers gallery. Nov 07, 2009 cotter joint a cotter joint is used to connect rigidly two coaxial rods or bars which are subjected to axial tensile or compressive forces.
The inclusion of the design of other joint other than cotter joints such as knuckle joints. Knuckle joint is a type of mechanical joint used, to connect two intersecting cylindrical rods, whose axes lie on the same plane. Mar 27, 2012 cotter and knuckle joints hareesha n g dept. Cotter and knuckle joint cotter and knuckle joints 431 1. The rods connected by this joint are subjected to tensile loads. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Jul 17, 2016 a cotter is a flat wedgeshaped piece of steel which is used to connect rigidly two rods which transmit motion in the axial direction tensile or compressive forces without rotation. Before going into detailed steps to design the dimensions of the knuckle joint, it is essential to get oriented with all its components and their functions. Cotter and knuckle joint cotter and knuckle joints 431 1 introduction 2 types of cotter joints 3 socket and spigot cotter joint 4 design of socket and. Study and analysis of pin of knuckle joint in train 1ravindra s. Ch12 contents contents cotter and knuckle joints c h a. Department of mechanical engineering government college of. Now in that class we have designed what is known as knuckle joint that is the.
Design and analysis of automobile leaf spring using ansys. What are the practical application of cotter joint. Flow arrangements and temperature distributions in transfer type of heat. Design of gib and cotter joint for strap end of a connecting rod. Study and analysis of pin of knuckle joint in train.
Dimensions can be determined using these empirical relations and the strength equations can be then used as a check. It permits some angular movement between the cylindrical rods. Joint probabilities can be calculated using a simple formula as long as the probability of each event is. Cotter joints may be used in areas subject to corrosion during operation, resulting in difficulty in turning rusty bolts and nuts of threaded connections. Knuckle joint introduction, parts and applications. Ch12 contents contents cotter and knuckle joints c h a p t. These joints are used for different types of connections. Be able to apply design knowledge for design of cotter joint and knuckle joint etc and. This joint permits misalignment of the rods and may take compressive load if it is guided. Design and topology optimisation of a steering knuckle joint using fea pilla. Mechanical joints may be temporary or permanent, most types are designed.
The knuckle joint is a type of mechanical joint which is used to connect two rods or bars when a small amount of flexibility or angular moment is necessary. The rods connected by this joint are subjected to tensile loads, although if the rods are guided, they may support. In this article, i am going to publish the detailed design procedure for knuckle joint. The knuckle joint assembly consists of the following major components. Hidden regular variation is a submodel of multivariate regular variation and facilitates accurate estimation of joint tail probabilities. Tech student 2assistant professor 1,2department of mechanical engineering 1,2srm university, kattankulathur, india abstract this papers shows the methodology of developing an. Video lecture on design procedure of cotter joint, socket and spigot joint from design of cotter joint, knuckle joint,levers and offset links chapter of design of machine for mechanical. Cotter joints use a transverse wedge with cylindrical or conical surfaces, and a longitudinal wedge. A knuckle joint is designed for increasing the capacity to withstand load.
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