A surfacing weld is a weld applied to a surface, as opposed to making a. 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. As a design engineer, for a good bolted joint design, for a given loading conditions and materials of the abutments, you have to basically select the following design. 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.
In a socket and spigot cotter joint, one end of the rods say a is provided with a socket type of end as. Cotter joints use a transverse wedge with cylindrical or conical surfaces, and a longitudinal wedge. Spigot inc, an international digital marketing company. Dec 21, 2017 design of socket and spigot cotter joint 1. An introduction to the analysis and design of bolted connections. This type of joint allows the bone to move in a 360 anglewith more freedom than other joints. The end of the rod which goes into a socket is also called spigot. Held together by ligaments and tendons two main ball and socket joints. Mechanical joints may be temporary or permanent, most types are designed to be disassembled. This increases the bearing area and permits drilling while making the slots. Figure 1 shows the details of the parts of an socket and spigot cotter joint. The cotter is locked in position by means of a screw as shown in fig.
At4 spigot, nato reporting name for 9k111 fagot, a russian antitank missile. 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. Now this is in the form of a rod and the other part which is has. Spigot and socket joint, joints in water supply pipes. Class xii sample question paper 201819 time allowed. Socket and spigot cotter joint solid works part design. Sleeve and cotter joint, socket and spigot joint and knuckle joint drawn by r. We shall learn that there are three cotter joints for connecting the circular rods. Design of gib and cotter joint for strap end of a connecting rod. Or they could have a bivariate joint gaussian pdf, or something in between as henning makholm points out. Design procedure of cotter joint, socket and spigot joint design. A mechanical joint is a section of a machine which is used to connect one or more mechanical part to another. These joints may be subjected to tensile or compressive forces along the axes of the rods. Download as ppt, pdf, txt or read online from scribd.
Explain the design process for knuckle joint with neat sketch. Notes for design of machine elements dme by alok kumar nanda, engineering class handwritten notes, exam notes, previous year questions, pdf free download. Chapter 7 cotter and knuckle joints machine design. Spigot is formed on one of the rods and socket is formed on the other. Design of spigot and socket cotter let p load carried by the rods, d diameter of the rods, d. They act like the bumpers between a boat and a dock and are found where tendons, bone, muscle, ligaments, or skin lay on top of one another and move. Joint between the slide spindle and the fork of the valve mechanism. A cotter is driven tightly through the slots in the rods which are kept slightly mis aligned.
Spigot, the male end of a pipe designed to be connected with a spigot and socket joint. Socket and spigot cotter joint is used to connect circular rods. Following are the three commonly used cotter joints to connect two rods by a cotter. Shoulder and hip joints ball and socket ball and socket joint. Make sure the ends stay free of debris and bedding during this operation. In fact, the joint pdf given there is zero in the second and fourth quadrants. Assemble these parts correctly, and then draw the following views using scale 1. A ball and socket joint enarthrosis, spheroidal joint is a joint in which the ballshaped surface of a bone fits into the cuplike indentation of another bone. All the parts of the joint are made from same material with following allowable stresses. Cotter joint has mainly three components spigot, socket and cotter as shown in figure 9. When cotter is inserted in slot through socket and spigot and pressed by means of hammer, it becomes tight due to wedge action. Spigot and socket joint pipes are joined and sealed using either a rolling rubber or a sliding rubber ring respectively. The socket and the spigot are provided with a narrow rectangular slot.
Yes practical joint between the piston rod and and the cross head of the steam engine. Can the joint pdf of two random variables be computed from. 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 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. Permissible shear stress for the cotter material, and. 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 joint is made by caulking in spun yarn jute and then filling the remainder of the joint space by molten lead and then thoroughly caulking the lead. Spigot, an individual projecting microscopic tube in a spiders spinneret. To understand the design steps let take a question and solve it step by step. A cotter joint is a temporary fastening and is used to connect rigidly to coaxial shafts which are subjected to axial tensile or compressive forces.
So the spigot is here this part is spigot this one. In some cases they are extensions of the synovial membrane of a joint. Cotter joint is used to connect two rods or components which are subjected to tension or compression. It is uniform in thickness but tapering in width, generally on one side. 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. It is usually used in connecting a position rods to the cross head of a reciprocating steam engine, strap end of connecting rod etc. Appropriate slots are cut in the sleeve and in the cylindrical rods. Socket and spigot cotter joint sleeve and cotter joint. There are 371 suppliers who sells spigot and socket joints on, mainly located in asia. Sleeve cotter joint pdf the working of the cotter andsleeve and cotter and gib are shown below. Let p load carried by the rods, d diameter of the rods, d1 outside diameter of socket, d2 diameter of spigot or inside diameter of socket, d3 outside diameter of spigot collar, t1 thickness of spigot.
Design procedure of cotter joint, socket and spigot joint design of machine duration. Design of cotter joint animation step by step procedure. This allows tension of the gasket to be evenly distributed. An application in a meat manufacturing company it is the common prac tice, that a production process ends up with more than one final prod ucts. Design of gib and cotter joint for strap end of a connecting. Socket and spigot cotter joint and its design engineers. 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. Cotter and knuckle joint cotter and knuckle joints 431 1. Once the required joint gap is achieved, keep the jointing force on for around 15 to 20 seconds. It contains a sleeve and two wedge shaped tapered cotters.
The examples of tapered keys are a taper sunk key b. Cotter a cotter is a flat wedge shaped piece of rectangular cross section and its width is tapered either on one side or on. You can buy five 10mm cotter pin joints that contains 5 cotter pins and 10 fibre board disks enough for 5 joints, eg two arms, two legs and one head. A mechanical joint is a part of a machine which is used to connect one. Design a socket and spigot joint to resist a tensile load of 28kn. Notes for design of machine elements dme by alok kumar. The cotter is usually made of mild steel or wrought iron. Video lecture on design procedure of cotter joint, socket and spigot joint from design of cotter joint, knuckle joint,levers and offset links. The joint allows a small angular moment of one rod. Design of cotter joint bending strength of materials. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. The socket and spigot cotter joint is shown in fig. In this case one end of the first rod is enlarged in diameter to some.
Let p load carried by the rods, d diameter of the rods, d1 outside diameter of socket, d2 diameter of spigot or inside diameter of socket, d3 outside diameter of spigot collar, t1 thickness of spigot collar. 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. View notes cotter and knuckle joint from none at lovely professional university. 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. Sleeve and cotter joint, socket and spigot joint and. The molten lead solidifies quickly and makes the joint water tight. 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. Spigot and socket jointcotter joint rods, having axial tensile or compressive forces are connected by cotter joints. Design of spigot and socket cotter let p load carried by the rods, d diameter of the rods, d1 outside diameter of socket, d2 diameter of spigot or inside diameter of socket, d3 outside diameter of spigot collar, t1 thickness of spigot collar, d4 diameter of socket collar, c thickness of socket collar, b mean width of cotter, t thickness of cotter, l length of cotter, a distance from the end.
Jan 10, 2015 bolted joint design calculation example for joint in tension properly designed bolted joint is extremely important for striking the balance between the cost and life of the joint. 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. The top countries of suppliers are india, china, from which the percentage of spigot and socket joints supply is 1%, 99% respectively. Sleeve cotter joint pdf the working of the cotter and sleeve and cotter and gib are shown below. Socket and spigot cotter joint and its design engineers gallery. Design procedure the dimensions for a socket and spigot cotter joint may be obtained by considering the various modes of failure 1 failure of the rod in tension the rod may fail in. Cotter joints may be used in areas subject to corrosion during operation, resulting in difficulty in turning rusty bolts and nuts of threaded connections. The lateral bearing edges of the cotter and the bearing slots are generally made semicircular instead of straight fig. Cotter joint article about cotter joint by the free dictionary. The products that result from the same production process are termed as joint products or byproducts. Design of cotter joints with socket and spigot, with a gib. Socket and spigot cotter joint the socket and spigot cotter joint is shown in fig. Design procedure of cotter joint, socket and spigot joint. Design and draw a neat sketch of spigot rod for the cotter joint.
Socket end of rod a fits over the spigot end of rod b 2. Design of socket and spigot joint free download as powerpoint presentation. Design of socket and spigot joint bending mechanics. Design a socket and spigot joint to resist a tensile load of 28 kn. 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. Ppt cotter joint powerpoint presentation free to view. Instructions the parts and assembly of the cotter joint is. A cotter joint is a simple and compact connection and is easily assembled and disassembled. 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. In our syllabus the assembly and disassembly of cotter joints for circular and square rod are there. All the parts of the joints are made from same material with following allowable stresses. 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 collar the spigot is put inside the socket and the cotter is driven through the slots in socket and spigot ends.
The effect of stress concentration due to the slot is neglected. Spigot fits inside the socket and the cotter is passed through both the socket and the spigot. Cotter joints can be quickly assembled as well as disassembled. Cotter joint these types of joints are used to connect the end of a rod or bar to a shaft. Ball and socket joint simple english wikipedia, the free. Mar 30, 2017 socket and spigot cotter joint is connecting two rods in such a way that it can transfer axial compression or tensile load. Design a cotter joint subjected to a tensile load of 35 kn and a compressive load of 40 kn. Spigot and socket joint definition and meaning collins. What are the applications of socket and spigot cotter joint. State the different applications of the cotter joint. Cotter joints are used to connect two rods, subjected to tensile or compressive forces along their. The permissible crushing stress is x times the permissible tensile stress for the material of spigot where x 1. Knuckle joint only sectional front view is in our syllabus. The end of the bar has a hole in it and it is called a lug.
Procedure for the spigot and cotter joint to understand the design steps let take a question and solve it step by step. A set of 10mm cotter pin joints enable your creation have moving arms, legs and head. What are the practical application of cotter joint. This ensures tightness of the joint in operating condition and prevents loosening of the parts socket and spigot cotter joint notation used. State the different applications of the knuckle joint. A wide variety of spigot and socket joints options are available to you, such as plastic. Sleeve and cotter joint is a type of joint used to typically connect two similar coaxial cylindrical rods.
Assemble these parts correctly and then draw its following views to scale 1. Rods may be of different cross sections like circular or square. A socket is formed by expanding the end of one rod in which the spigot end of the other rod is inserted. Design a cotter joint subjected to a tensile load of 35 kn and a. Diameter of spigot or inside diameter of socket, d. Muttagi, slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 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. If the allowable stresses in tension, compression and shear for the socket, rod and cotter be t.
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