View notes cotter and knuckle joint from none at lovely professional university. 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. Sleeve and cotter joint, socket and spigot joint and knuckle joint drawn by r. Tierod and pipe joint i turnbuckle ii flange pipe joint 4. See all design to learn to design and assemble the parts in diff ways and methods. Figure 1 shows the details of the parts of an socket and spigot cotter joint. A cotter joint for connecting two rods along which tension or compression act is made with ends of the rod especially made. Socket and spigot cotter joint and its design engineers gallery. 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 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. Design procedure of cotter joint, socket and spigot joint design of machine video lecture on design procedure of cotter joint, socket and spigot joint. Keys, cotter and unit 5 key, cotter and knuckle knuckle. Design procedure of cotter joint, socket and spigot joint design.
Each rod is subjected to an axial tensile force of 50 kn. One rod end carries a spigot the end to be inserted while the other rod end is finished in form of a socket. Socket and spigot cotter joint is used to connect circular rods. The socket and the spigot are provided with a narrow rectangular slot.
The cotter is locked in position by means of a screw as shown in fig. Socket and spigot cotter joint, sleeve and cotter joint, and gib and cotter 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. In a socket and spigot cotter joint, one end of the rods say a is provided with a socket type of end as. This video explains design procedure of socket and spigot type of the cotter joint. Material of two rods and cotter is steel 30 c8 s yt 400nmm2, s yc 2 s yt and s sy 0. The top countries of suppliers are india, china, from which the percentage of spigot and socket joints supply is 1%, 99% respectively. The variou s proportions of the joint as per empirical relations are. Design of machine elements 8th edition solution manual. Mar 27, 2012 cotter and knuckle joints hareesha n g dept.
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. Socket and spigot joint design of machine duration. A socket is formed by expanding the end of one rod in which the spigot end of the other rod is inserted. Tyton type socket spigot push fit joints socket and spigot joints tyton are assembled with a rubber gasket as shown in the above detail. A typical push fit rubber gasket has a hard heel and a soft bulb. There are a three types of cotter joint 1 socket and spigot cotter joint 2 sleeve and cotter joint 3 gib and cotter joint. Which of the following is not a part of cotter joint. There are 371 suppliers who sells spigot and socket joints on, mainly located in asia. The cotter has uniform thickness and the width dimension is given a slight taper. To understand the design steps let take a question and solve it step by step. Design of socket and spigot joint free download as powerpoint presentation. A cotter is driven tightly through the slots in the rods which are kept slightly mis aligned. Cotter joint article about cotter joint by the free dictionary.
It contains a sleeve and two wedge shaped tapered cotters. 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. Also in our syllabus there is only one cotter joint for joining square or rectangular rods and it is called. The cotter is usually made of mild steel or wrought iron. 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.
Cotter joint cotter joints with socket and spigot ends for circular bars slots are wider than the cotter. Design of socket and spigot cotter joint part number name of part 1 shaft or rod 2 socket 3 spigot 4 cotter 5 socket collar 6 spigot collar mr. Here is the diagram showing the exploded view of knuckle joint. Spigot and socket joint, joints in water supply pipes. Following are the three commonly used cotter joints to connect two rods by a cotter. 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 is also called as socket and spigot joint. Cotter joints can be quickly assembled as well as disassembled. Assemble these parts correctly, and then draw the following views using scale 1. A cotter joint is temporary joint and used to connect two coaxial rods or bars which are subjected to axial tensile and or compressive forces. Cotter pulls the rod and socket tightly together clearance must be provided for adjustment. Design of cotter joint free download as powerpoint presentation. When the cotter is inserted into the slot, the central portion of cotter comes in contact with spigot and the spigot gets pushed into the socket till the.
Ppt cotter joint powerpoint presentation free to view. Chapter 7 cotter and knuckle joints machine design. Sep 18, 2017 socket and spigot joint assembly and sectional views for more machine drawing videos. Joint between piston rod and crosshead of steam engine 2. Socket and spigot cotter joint solid works part design. The heel is inserted into the groove for retaining the gasket, when the spigot enters the socket, the bulb gets compressed and does the sealing. It consist of 1 spigot 2 socket 3 cotter application. Mechanical joints may be temporary or permanent, most types are designed to be disassembled.
A cotter joint is a simple and compact connection and is easily assembled and disassembled. Cotter joint 1 cotter joint fig 01 assembled cottered joint 2 cotter joint modes of failure tension failure fig 02 steel spigot breaking in tension outside the joint 3 tension failure cotter joint modes of failure 4 tension failure cotter joint modes of failure fig 07 socket breaking in tension across slot 5 cotter joint modes of failure. Cotter joint has mainly three components spigot, socket and cotter as shown in figure 9. Sleeve and cotter joint is a type of joint used to typically connect two similar coaxial cylindrical rods. In a socket and spigot cotter joint, one end of the rods say a is provided with a socket type of end as shown in fig. Rods may be of different cross sections like circular or square. The factor of safety for rods, spigot end and socket end is assumed as 6 while for cotter. Scribd is the worlds largest social reading and publishing site. The socket and spigot cotter joint is shown in fig 2.
The ball and socket joint or spheroid joint is a type of synovial joint in which the ballshaped surface of one rounded bone fits into the cuplike depression of another bone. Cotter joints may be used in areas subject to corrosion during operation, resulting in difficulty in turning rusty bolts and nuts of threaded connections. Cotter joint a cotter joint is used to connect rigidly two coaxial rods or bars which are subjected to axial tensile or compressive forces. Various examples of carrying out the invention are illustrated by the accompanying drawings, each of which is a sectional view of the joint. Cotter and knuckle joints understanding engineers gallery.
Design a socket and spigot cotter joint to connect two steel rods of equal diameter. Spigot joint article about spigot joint by the free dictionary. 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. The end of the rod which goes into a socket is also called spigot. This increases the bearing area and permits drilling while making the slots. Appropriate slots are cut in the sleeve and in the cylindrical rods.
Class xii sample question paper 201819 time allowed. Sir, what do you mean by fs in the knuckle joint assembly drawing. By clicking the link, you can find the additional book to read. Sleeve cotter joint pdf the working of the cotter andsleeve and cotter and gib are shown below. One of the rods is formed into a socket by enlarging its end while the other rod, called spigot end is formed with enlarged diameter and an integral. If the allowable stresses in tension, compression and shear for the socket, rod. Spigot and socket joint definition and meaning collins. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Cut section of socket and spigot joint 3272012 2 hareesha n g, dsce, blore78.
Cotter joints are used to connect two rods, subjected to tensile or compressive forces along their. A cotter joint is a temporary fastening and is used to connect rigidly two co. What are the applications of sleeve and cotter joint answers. A cotter joint for connecting two rods along which tension or. Sleeve and cotter joint, socket and spigot joint and. Socket and spigot cotter joint and its design engineers. Spigot and socket joint pipes are joined and sealed using either a rolling rubber or a sliding rubber ring respectively. As seen in the assembly the knuckle joint has main four parts. The distal bone is capable of motion around an indefinite number of axes, which have one common center. What are the applications of sleeve and cotter joint. Cotter joints use a transverse wedge with cylindrical or conical surfaces, and a longitudinal wedge. Restrained socket joints 9 restrained socket joints 9. 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.
Spigot and socket jointcotter joint rods, having axial tensile or compressive forces are connected by cotter joints. Spigot is formed on one of the rods and socket is formed on the other. Socket and spigot cotter joint assembly i front view, upper half in section a drawing the upper half portion of socket and spigot arrangement, clearance on both sides of cotter and 4mm clearance between inner walls b drawing the lower half portion of socket and spigot arrangement c drawing the cotter d drawing the hatching lines 7 3 2. Sleeve cotter joint pdf the working of the cotter and sleeve and cotter and gib are shown below. Socket and spigot cotter joint the socket and spigot cotter joint is shown in fig. Design procedure of cotter joint, socket and spigot joint. The sliding rubber ring is installed using a soft soap lubricant. Socket and spigot cotter joints in a socket and spigot cotter joint, one end of the rods is provided with a socket type of end as. Pdf as a vent to pull off it is not provided in this website. For example two rods may be joined coaxially and when they are pulled apart they should not. Ppt knuckle joint powerpoint presentation free to view. Shearing away of socket if dw spigot end cotter joint modes of failure.
There is no point of mentioning collar alone in a cotter joint. This document is highly rated by mechanical engineering students and has been viewed 1585 times. Double shear failure of collar of socket by cotter pt2td4d1e find the value of e from the above equation emperically e0. Now, let us learn more about the sleeve and cotter joint rzqordghgiurpzzz vwxglhvwrgd\ frp. Instructions the parts and assembly of the cotter joint is. Spigot and socket joint assignment help, spigot and socket joint homework help, joints in water supply pipes tutors.
A wide variety of spigot and socket joints options are available to you, such as plastic. A mechanical joint is a section of a machine which is used to connect one or more mechanical part to another. Cotter joint socket and spigot joint it is used to connect two coaxial rods under the action of axial tensile or compressive loads. Prestressed concrete structures questions and answers. Socket and spigot cotter joint sleeve and cotter joint. Design a cotter joint subjected to a tensile load of 35 kn and a compressive load of 40 kn. Design of socket and spigot joint bending mechanics. Cotter joint is used to connect two rods or components which are subjected to tension or compression.
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