Cotter joint a cotter joint is used to connect rigidly two coaxial rods or bars which are subjected to axial tensile or compressive forces. Gib and cotter joints are used for rods of square or rectangular cross section. The cotter is usually made of mild steel or wrought iron. Keys, cotter joints and pin joints machine drawing. Knuckle joint, cotter joint and turn buckle the article contains the questions and answers related to the design of joints including knuckle joint, turn buckle and cotter joint.
It is also used to connect a rod on one side with some machine part like a crosshead or base plate on the. Chapter 7 cotter and knuckle joints machine design. The parts and assembly of the knuckle joint and ballandsocket joint are shown below. Design procedure of cotter joint, socket and spigot joint design of machine duration. Knuckel joint is designed to allow certain motion or angle between two shafts even if they are in action, whereas cotter joit is design to facilitate the aligned shafts that rotate in same directions. This is used to connect rigidly two rods which transmit motion in the axial direction, without rotation. Video lecture on design procedure of cotter joint, socket and spigot joint from design of cotter joint, knuckle joint,levers and offset links. A mechanical joint is a section of a machine which is used to connect one or more mechanical part to another. Procedure of knuckle joint from design of cotter joint, knuckle joint,levers and offset links chapter. Apr 09, 2020 chapter 7 cotter and knuckle joints machine design, mechanical engineering mechanical engineering notes edurev is made by best teachers of mechanical engineering. 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. Explore the constraint window in inventor and assemble the ballandsocket joint. Adjustable screwed joint for round rods turn buckle.
The knuckle joint is a type of joint which is used in steering. Bolt connections column shoes and anchor bolts duration. Gib is likely a cotter but with two gib heads at its ends. A knuckle joint may be readily disconnected for adjustments or repairs. Cotter and knuckle joints understanding engineers gallery. In this article, i am going to publish the detailed design procedure for knuckle joint. Knuckle joint can be classified into a large number of types based on its size, shape, specification, application and other criteria. A cotter is a flat wedge shaped piece of rectangular cross section and its width is tapered either on one side or on both sides from one end to another for an easy adjustment. 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 force. A knuckle joint is used to connect two rods which are under a tensile load. Question for cotter and knuckle joint 1 free download as word doc.
Cotter joint design procedure failure animations youtube. Cotter pin joints are the traditional joint s used in teddy bear making, usually a set of 5 joint s are required for each teddy bear. Cotter a cotter is a flat wedge shaped piece of rectangular cross section and its width is tapered either on one side or on. Dimensions can be determined using these empirical relations and the strength equations can be then used as a check. Design a knuckle selection from machine design book. Cotter pin joints, teddy bear supplies, christie bears ltd. There is always axial or linear line of action of load. Key cotter and knuckle joints 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. The joint which is shown is generally used for connecting to rod or shaft which is in the. A shaft always carry upon at some other part like gear or pulley. Rods, having axial tensile or compressive forces are connected by cotter joints.
A cotter is a flat wedgeshaped piece of steel as shown in figure. A cotter joint is used to connect two coaxial rods, which are subjected to either axial tensile force or axial compressive force. When there is a requirement of a small amount of flexibility or angular moment, knuckle joint is used. Knuckle joint a knuckle joint is a pin joint used to fasten two circular rods.
Jul 03, 2015 sleeve and cotter joint, socket and spigot joint and knuckle joint drawn by r. In our syllabus the assembly and disassembly of cotter joints for circular and square rod are there. This document is highly rated by mechanical engineering students and has been viewed 1585 times. The member will pretense how you will get the knuckle joint engineering.
We shall learn that there are three cotter joints for connecting the circular rods. Mar 06, 2017 hello dosto, mera name h ankit ras aur le k aaya hu mechanical guru ka ek aur latest episode aur ajj hum baat karenge. The pin joint has a little more flexibility as compared to a cotter joint and is used to join two rodsshafts that. This document is highly rated by mechanical engineering students and has been viewed 249 times. The function of rivets in a joint is to make a connection. A socket is formed by expanding the end of one rod in which the spigotend of the other rod is inserted. Keys, cotter and unit 5 key, cotter and knuckle knuckle. What are the practical application of cotter joint. Sleeve and cotter joint, socket and spigot joint and knuckle. Dec 30, 2017 apr 11, 2020 cotter and knuckle joint part 1 mechanical engineering notes edurev is made by best teachers of mechanical engineering.
Design procedure of cotter joint, socket and spigot joint. Sir, what do you mean by fs in the knuckle joint assembly drawing. Very high tightening force due to wedge action, which prevents loosening of parts in service. Cotter and knuckle joint part 1 mechanical engineering. The project gutenberg ebook of woodwork joints, by william fairham this ebook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. Some standard proportions for dimensions of the knuckle joint are taken as. 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. Sleeve and cotter joint, socket and spigot joint and. Here is the diagram showing the exploded view of knuckle joint.
Unlike in cotter joints, the pin in a pin joint is not drivenin with a force fit, but is inserted in the holes with a clearance fit. Our single packs will be sufficient for 1 bear 5 joints our 10 joint packs will be sufficient for two bears our 50 joint packs will be sufficient for ten bears. They have completed modeling and analysis by using advanced modeling software system catia and. Knuckle joint introduction, parts and applications.
Scribd is the worlds largest social reading and publishing site. 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. Modeling and analysis of cotter joint ijert journal. Cotter joint these types of joints are used to connect the end of a rod or bar to a shaft.
Mechanical joints may be temporary or permanent, most types are designed to be disassembled. Knuckle and cotter joint free download as word doc. 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. A cotter joint is useful for joining two rodsshafts that are axial for the transmission of motion from one shaft to other. Joints types of joints temporary joint semi permanent joint. Cotter joint cotter and knuckle joints are fasteners used to connect two roads transmitting axial force. Sleeve cotter joint pdf the working of the cotter and sleeve and cotter and gib are shown below. Mar 27, 2012 cotter and knuckle joints hareesha n g dept. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. 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. 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. Sleeve cotter joint pdf the working of the cotter andsleeve and cotter and gib are shown below. 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 more others. Cotter joint is used to connect two rods or components which are subjected to tension or compression.
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. The pin is held in position, by me ans of a taper pin or. 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. The video will explain the cotter joint with help of animation,as well as animation of its all parts. Machine drawing what are the types of cotter, how to draw cotter joint, how to make a pin joint, how is a knuckle joint constructed, and how is a knuckle joint drawn. Rods may be of different cross sections like circular or square. Cotter and knuckle joint cotter and knuckle joints 431 1. A cotter is driven tightly through the slots in the rods which are kept slightly mis aligned. Knuckle joint only sectional front view is in our syllabus. Ppt knuckle joint powerpoint presentation free to view. These joints may be subjected to tensile or compressive forces along the axes of the rods. Following are the three commonly used cotter joints to connect two rods by a cotter.
Front and top view of knuckle joint evangelinterior. This joint permits misalignment of the rods and may take compressive load if it is guided. These joints are used for different types of connections. Chapter cotter and knuckle joints chapter objectives design a cotter joint for a given load to be transmitted, after assuming allowable stresses in cotter and rods.
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. Christie bears limited office 5, pyle enterprise centre, village farm industrial estate, village farm road, pyle, bridgend, cf33 6bl tel. What is the defference between key and cotter answers. 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. Single knuckle joint double knuckle joint double knuckle joint. What is difference between knuckle joint and cotter joint. You may copy it, give it away or reuse it under the terms of the project gutenberg license included with this ebook or online at. Mohair bear making supplies limited cotter t pin joints.
May 08, 2017 the cotter is usually made of mild steel or wrought iron. A gib is used along with the cotter to make this joint. Cut section of socket and spigot joint 3272012 2 hareesha n g, dsce, blore78. The knuckle joint assembly consists of the following major components. 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. Sleeve and cotter joint, socket and spigot joint and knuckle joint drawn by r. Cotter gets locked because of the frictional force of the contacting surfaces. As seen in the assembly the knuckle joint has main four parts. It is a mechanical joints which is used to become a fixed attaches to something or. Cotter joint with a gibcotter joint with a gib gib and cotter joints are used for rods ofgib and cotter joints are used for rods of square or rectangular cross section.
Design procedure of cotter joint, socket and spigot joint design. View notes cotter and knuckle joint from none at lovely professional university. 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. It includes the various applications of the joints and also the comparison of the joints. Manufacturers usually have a model number for each type of knuckle joint they manufacture. 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. Clevis pin and snap ring cotter pin for 40 are attached.
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