See all design to learn to design and assemble the parts. 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. Jan, 2017 in this article,design procedure for knuckle joint and cotter joint were explained in a detailed manner with the help of videos stay safe and healthy. As seen in the assembly the knuckle joint has main four parts. A cotter is a flat wedgeshaped piece of steel as shown in figure. Cotter joints are the joints made with the help of cotter. Mechanical joints may be temporary or permanent, most types are designed to be disassembled. In knuckle joint the two views of which are shown in fig. In the whole assembly the cotter is the part with least material and easy to replace, hence for this economical and practical reason cotter is kept weakest, so that it can be replaced on failure. A cotter joint is a simple and compact connection and is easily assembled and disassembled. Cotter joints may be used in areas subject to corrosion during operation, resulting in difficulty in turning rusty bolts and nuts of threaded connections. A colour monitor with highest 32 bit colour display and with screen resolution 1024 by 768 pixels. 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. Cut section of socket and spigot joint 3272012 2 hareesha n g, dsce, blore78.
The joint which is shown is generally used for connecting to rod or shaft which is in the. Basically, cotter joint is used in which there is no angular displacement between two rod o the other hand the knuckle joint is used in which there is necessity of angular displacement for e. Chapter 7 cotter and knuckle joints machine design. View ats5 types of keys, cotter and knuckle joints 1.
Knuckle joint design is one of important and easy topic in the subject design of machine elements. Design procedure of cotter joint, socket and spigot joint design. Gib and cotter joints are used for rods of square or rectangular cross section. Cotter joint cotter and knuckle joints are fasteners used to connect two roads transmitting axial force. Design of knuckle joint with bending failure of knuckle pin. Ppt knuckle joint powerpoint presentation free to view. Cotter joint is used to connect two rods subjected to axial tensile or compressive loads. Dimensions can be determined using these empirical relations and the strength equations can be then used as a check.
What is difference between knuckle joint and cotter joint. When there is a requirement of a small amount of flexibility or angular moment, knuckle joint is used. Sleeve and cotter joint is a type of joint used to typically connect two similar coaxial cylindrical rods. Jul 03, 2015 sleeve and cotter joint, socket and spigot joint and knuckle joint drawn by r. P load on the joint or pull acting on rods, d diameter of the rod, d1 outer diameter of socket,d2 diameter of spigot or inside diameter of socket, d3 outside diameter of spigot collar,d4 diameter of socket collar, t1 thickness of spigot collar, a distance from the end of the slot to end of spigot, c thickness. Cotter joint a cotter joint is used to connect rigidly two coaxial rods or bars which are subjected to axial tensile or compressive forces. A cotter joint is used when no relative motion is permitted between the rods joined by the cotter. What are the practical application of cotter joint. 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. A cotter joint is used to connect two coaxial rods, which are subjected to either axial tensile force or axial compressive force. To create the knuckle joint assembly as a 3d solid model using catia v5 software. 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. The cotter contacts the two rods through frictional contact force.
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. A key joint is used to transmit a positive drive bw two rotating parts whereas a cotter joint is used to transmit axial pull or push bw to rods and they do not rotate. Cotter joint is widely used to connect the piston rod and crosshead of a steam engine, as a joint between the piston rod and the tailor pump rod, foundation bolt etc. 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. The cotter is inserted in a transverse direction to the rods. Cotter joint is a flat wedge shaped piece of steel. Cotter joints use a transverse wedge with cylindrical or conical surfaces, and a longitudinal wedge. For making the joint, the eye end of the rod is aligned into the fork end of the other and then the pin is inserted through the holes. Like the concept on the cotter pin nice job 22 jul 2011 11. There is always axial or linear line of action of load. What is the defference between key and cotter answers. Cotter joint is used to connect two rods or components which are subjected to tension or compression. A mechanical joint is a section of a machine which is used to connect one or more mechanical part to another. Cotter and knuckle joint part 1 mechanical engineering.
It contains a sleeve and two wedge shaped tapered cotters. The knuckle joint assembly consists of the following major components. Cotter joint has mainly three components spigot, socket and cotter as shown in figure 9. 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. Prof, dayananda sagar college of engg, blo slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. It is a mechanical joints which is used to become a fixed attaches to something or holds something in. May 01, 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. It is uniform in thickness but tapering in width, generally on one side only. This document is highly rated by mechanical engineering students and has been viewed 250 times. 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.
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 socket cotter spigot. Cotter joint piston tension physics free 30day trial. Cotter and knuckle joints, computer aided machine drawing camd of vtu syllabus prepared by hareesha n gowda, asst. Mar 27, 2012 cotter and knuckle joints hareesha n g dept. Gib is likely a cotter but with two gib heads at its ends. Cotter joint article about cotter joint by the free dictionary. Design of various types of riveted joints under different static loading conditions, eccentrically loaded riveted joints. Please wash your hands and practise social distancing. Knuckle joint cotter joint 1 it takes only tensile load it takes tensile as well as compressive load. Sir, what do you mean by fs in the knuckle joint assembly drawing. Cotter and knuckle joint cotter and knuckle joints 431 1. Keys, cotter and unit 5 key, cotter and knuckle knuckle. It is also used to connect a rod on one side with some machine part like a crosshead or base plate on the.
This is used to connect rigidly two rods which transmit motion in the axial direction, without rotation. View notes cotter and knuckle joint from none at lovely professional university. Some standard proportions for dimensions of the knuckle joint are taken as. 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. The function of rivets in a joint is to make a connection. Apr 29, 2020 chapter 7 cotter and knuckle joints machine design, mechanical engineering mechanical engineering notes edurev is made by best teachers of mechanical engineering. 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. In this joint, one end of the rod is formed into an eye and the other into a fork double eye. Sleeve and cotter joint, socket and spigot joint and knuckle joint drawn by r. Sleeve and cotter joint, socket and spigot joint and knuckle.
Jul, 2017 chapter 7 cotter and knuckle joints machine design, mechanical engineering mechanical engineering notes edurev notes for mechanical engineering is made by best teachers who have written some of the best books of mechanical engineering. Dec 30, 2017 may 01, 2020 cotter and knuckle joint part 1 mechanical engineering notes edurev is made by best teachers of mechanical engineering. The video will explain the cotter joint with help of animation,as well as animation of its all parts. Hello dosto, mera name h ankit ras aur le k aaya hu mechanical guru ka ek aur latest episode aur ajj hum baat karenge. Joints types of joints temporary joint semi permanent joint. 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 document is highly rated by mechanical engineering students and has been viewed 1586 times.
Knuckle joint design procedure problems and questions assembly drawing of knuckle joint knuckle joint assembly drawing sectional front top view mechanical drafting md machine drawing sleeve and cotter joint socket spigot knuckle joint drawing you solved 2 shear loading of bolt given the knuckle joint machine drawing btau305 sunil. Video lecture on design procedure of cotter joint, socket and spigot joint from design of cotter joint, knuckle joint,levers and offset links. Design of knuckle joint from design of cotter joint. The subject of this project is the modeling and analysis of cotter joint. The cotter is usually made of mild steel or wrought iron. It is tapered on one side or on both sides so that it can be driven into the rectangular slots provided in the rods. A knuckle joint is used to connect two rods which are under the action of tensile loads. Here is the diagram showing the exploded view of knuckle joint. 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. View ats5 types of keys, cotter and knuckle joints1. A cotter is a tapered piece of flat, mild steel connecting two coaxial rods.
Figure 315, page 102, bhandari socket cotter spigot front view top view side. A gib is used along with the cotter to make this joint. 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. These joints may be subjected to tensile or compressive forces along the axes of the rods. 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. 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. It is capable of transmitting ies2002 a twisting moment b an axial tensile as well as compressive load. Cotter and knuckle joints understanding engineers gallery. 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. 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.
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