Design of cotter and knuckle joint pdf calculator

A knuckle joint is designed for increasing the capacity to withstand load. It is uniform in thickness but tapering in width, generally on one side only. Cut section of socket and spigot joint 3272012 2 hareesha n g, dsce, blore78. Final dimension from theoretical calculation of knuckle joint. How to calculate forces coming on knuckle calculations steering how to calculate forces coming on knuckle. When there is a requirement of a small amount of flexibility or angular moment, knuckle joint is used.

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. In existing design of knuckle, which has very less weight, but at the time of race a steering arm has separated from the knuckle due to low strength of knuckle and high strength of bolted joint as shown in figure 2. Design of temporary unit 2 design of temporary connections connections structure 2. Mar 01, 2016 video lecture on design procedure of knuckle joint from design of cotter joint, knuckle joint,levers and offset links chapter of design of machine for mechanical engineering students. Shows a model of double eye having same dimension of theoretical model. Assume there is no clearance or slack but in actual, knuckle pin is loose in forks to permit angular moment of one with respect to other, so it is. Cotter joint is widely used to connect the piston rod and cross head of the steam engine, so as a joint between the piston rod and the tailor pump rod, foundation bolt etc. Knuckle joint introduction, parts and applications. A knuckle joint is used to connect the two rods which are under the tensile load when there is requirement of a small amount of flexibility or when angular movement is necessary. Ch12 contents contents cotter and knuckle joints c h a p t. The mechanics of different joints are also well understood, so the detailed design of the joint can then be done deterministically consider a three legged chair, and its interface with the ground. Design of cotter joint to connect piston rod and crosshead. Cotter and knuckle joint cotter and knuckle joints 431 1.

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. Following are the three commonly used cotter joints to connect two rods by a cotter. Manufacturers usually have a model number for each type of knuckle joint they manufacture. Design of various types of riveted joints under different static loading conditions, eccentrically loaded riveted joints. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. A cotter joints is a flat wedge link piece of steel of rectangular cross section which is inserted through the rods at high angle to their axes. Margin or marginal pitch m failures of a riveted joint 1.

Explore the constraint window in inventor and assemble the ballandsocket joint. A knuckle joint is used to connect two rods which are under a tensile load. The link drive system of the mml2 developed by schuler can be made very flexible during the design of the press. The enlarged ends of the rods butt against each other with a common sleeve over them. This permits design of the motion characteristics in accordance with the requirements of the parts to be. Determine the size of bolts, if the maximum allowable tensile stress in the bolt material is 60 mpa. 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. Now this kind of cotter joint is known as a socket and spigot type cotter joint. Design procedure of knuckle joint design of machine youtube. In cotter joint clearance is also provided between cotter and slots to allow driven cotter to draw two parts together cotter is tapered a to withstand back movement due to impact load b due to taper shape, it is easy to remove cotter and dismantle the joint c for having perfect assembly of this joint when cotter is inserted in slot through. Dimensional calculations of knuckle joint assembly by using c programming for academic problem purpose article pdf available january 2018 with 7,834 reads how we measure reads. Jan 07, 2018 lever design process, hand and foot lever designs, cotter and knuckle joints, thickness of cotter, slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The procedure to generate double eye is given below. Knuckle joint assembly drawing sectional front top view mechanical drafting md knuckle joint design procedure problems and questions assembly drawing of knuckle joint knuckle joint assembly drawing in hindi easy way important for polytechnic engineering student machine drawing sleeve and cotter joint socket spigot knuckle joint drawing you machine.

The usual designers assumption of loading is shown in part c. 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. Study and analysis of pin of knuckle joint in train 1ravindra s. Some standard proportions for dimensions of the knuckle joint are taken as. The maximum permissible stresses are 55 mpa in tension. Cotter and knuckle joints 61 introduction 62 design of cottered joints a tension failure of the rods at diameter d b tension failure of the rod across slot c tension failure of the socket across the slot d shear failure of the cotter e shear failure of the rod end g crushing failure of the rod or the cotter. Study and analysis of pin of knuckle joint in train. Knuckle joint by harsha vardhan punna s guided by dr. Video lecture on design procedure of knuckle joint from design of cotter joint, knuckle joint,levers and offset links chapter of design. While steering an arm pulls knuckle towards a car for turning, so it should. Dimensional calculations of knuckle joint assembly by using c programming for academic problem purpose article pdf available january 2018. Cotter a cotter is a flat wedge shaped piece of rectangular cross section and its width is tapered either on one side or on.

Abstract weight reduction is now the main issue in automobile industries. Spigot and socket joint cotter joint rods, having axial tensile or compressive forces are connected by cotter joints. Machine design by rs khurmi contains 32 chapters and total 1251 pages. Knuckle joint can be classified into a large number of types based on its size, shape, specification, application and other criteria.

So in most of the design handbook the normal distribution taken is triangular over this surface. 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. A pin in a knuckle joint carrying a tensile load f deflects somewhat because of the loading resulting in the distribution of reaction and load shown in part b of the figure. Design procedure of cotter joint, socket and spigot joint. Design and draw a knuckle joint for a load of 100 kn.

Design of gib and cotter joint for strap end of a connecting rod. Design and topology optimisation of a steering knuckle joint using fea pilla. Lightweight and optimized design of steering knuckle is proposed to use for a baja sae india off road racecar. Each rod is subjected to an axial tensile force of 50 kn. 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. Rods may be of different cross sections like circular or square. 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.

Paper open access related content analysis of steering. A cotter joint is a temporary fastening and is used to connect rigidly two. Analysis of knuckle joint of various materials using cae tools. Design of machine elements i notes dme 1 unit 6 cotter. Design and analysis of knuckle joint stress mechanics. After the design of cotter joint, the modeling of cotter joint is done by using 3d software. Nagpur abstract the current paper presents the problem of the failure of the knuckle pin in a railway coupling due to shearing.

Designing and building furniture you have to consider a lot. The cotter is usually made of mild steel or wrought iron. Knuckle joint pin starting ansys 6 the main utility window can be broken up into three areas. The parts and assembly of the knuckle joint and ballandsocket joint are shown below. Cotter joints can be quickly assembled as well as disassembled. From the above results and discussion, knuckle joint was design for 50kn axial load by theoretical calculation.

A free powerpoint ppt presentation displayed as a flash slide show on id. Knuckle joint is yet another to join rods to carry axial force. How to calculate forces coming on knuckle baja tutor. View notes cotter and knuckle joint from none at lovely professional university. Mechanical design of machine elements design of temporary and permanent joints a bracket, as shown in figure, supports a load of 30 kn. Ppt knuckle joint powerpoint presentation free to view. Cotter joint is a flat wedge shaped piece of steel. As seen in the assembly the knuckle joint has main four parts. Most mechanical joints are designed to allow relative movement of these mechanical parts of the machine in one degree of freedom, and restrict movement in one or.

Design of cotter joint bending strength of materials. 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. A design procedure of cotter joint cotter joint introduction before going into detailed steps to design and find dimensions of cotter joint, it is necessary to understand clearly the various components, their functions and assembly of cotter joint. Design of cotter joint free download as powerpoint presentation. Butt joint a butt joint with single cover butt joint b butt joint with double cover butt joint important terms used in riveted joints 1.

Cotter joint a cotter joint is used to connect rigidly two coaxial rods or bars which are subjected to axial tensile or compressive forces. Pdf dimensional calculations of knuckle joint assembly. Dimensions can be determined using these empirical relations and the strength equations can be then used as a check. Pdf machine design by rs khurmi pdf mechanical geek. Result shows how much stress develop in knuckle joint is done.

Periasamy abstract the aim of the present project is to study the stresses in knuckle joint using analytical method. Due to the failure in knuckle in terrain vehicle after some instances, it has to be modified for better performance. The knuckle joint assembly consists of the following major components. As a common practice for plate thickness greater than. Design and draw a knuckle joint for a load of 100 kn answers. Pdf dimensional calculations of knuckle joint assembly by. The rods connected by this joint are subjected to tensile loads, although if the rods are guided, they may support. Unitii design under static loading simple elements like cotter and knuckle joints a. Cotter joints are the joints made with the help of cotter. Failure of cotter joint may causes accident, so it is necessary to design cotter joint to withstand under tension without failure the effective design of mechanical device. Johnsons formula, critical load, for one end fixed and other. Cotter, knuckle joints and lever design linkedin slideshare. Sorry for mistake in this lesson ajnan has discussed in detail about bending of knuckle pin. After modeling on catia v5r19, we will analyze cotter joint on software named as ansys v15.

Looking for downloadable 3d printing models, designs, and cad files. For analysis, it is intended to design the model of knuckle joint in cad software. A cotter is a flat wedgeshaped piece of steel as shown in figure4. Fbd shown in slide 4 has mistake i shown the left hand side force location wrong, its location will at half distance of t2. 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. Knuckle joint maximum bending stress calculator fx solver. Now in that class we have designed what is known as knuckle joint that is the fastener is a pin type. 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. Very high tightening force due to wedge action, which prevents loosening of parts in service. 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. 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. Nov 11, 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.

Cotter and knuckle joints are fasteners used to connect two. Unit 2 design of temporary design of temporary connections. After the design of cotter joint, the modeling of cotter joint is done by using catia v5r20. Mechanical forging presses with knuckle joint partspecific motion characteristics. We shall learn that there are three cotter joints for connecting the circular rods. Mar 01, 2016 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. Here is the diagram showing the exploded view of knuckle joint. Knuckle and cotter joint free download as word doc. Mar 27, 2012 cotter and knuckle joints hareesha n g dept. Threaded fasteners bolted joints including eccentric loading, knuckle joints. Knuckle and ballandsocket joints engineering design, iit. The knuckle joint assembly consist of following major components.

Design procedure of knuckle joint design of machine. Here, catia v5 software is used to create components of knuckle joint. Mechanical joints may be temporary or permanent, most types are designed to be disassembled. Cotter and knuckle joints understanding engineers gallery. In our syllabus the assembly and disassembly of cotter joints for circular and square rod are there. May 08, 2017 the cotter is usually made of mild steel or wrought iron. A mechanical joint is a section of a machine which is used to connect one or more mechanical part to another. Sleeve cotter joint pdf the working of the cotter and sleeve and cotter and gib are shown below. Procedure i calculate the diameter of each rod by eq. Design a cotter joint to connect two steel rods of equal diameter. In this article, i am going to publish the detailed design procedure for knuckle joint. The joint allows a small angular moment of one rod relative to another. Dme 1 pdf notes unit 6 topics covered dme 1 pdf notes of unit 6 are listed below.

It has socket end,spigot end and cotter as main parts. Design of various types of riveted joints under different static loading. A cotter joint is a temporary fastening and is used to connect rigidly two co axial rods or bars which are subjected to axial tensile or compressive force. Front and top view of knuckle joint evangelinterior. There is always axial or linear line of action of load. Well i always like books from rs khurmi, tom by rs khurmi pdf is also one of the good book from same author.