Socket and spigot joint assembly and sectional views for more machine drawing videos. View notes cotter and knuckle joint from none at lovely professional university. 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. Instructions the parts and assembly of the cotter joint is. A cotter joint is one that is used to hold parts that might turn, as in an axle or a drive shaft. Design procedure of cotter joint, socket and spigot joint design. There are several different types of joints in the human body. Spigot and socket jointcotter joint rods, having axial tensile or compressive forces are connected by cotter joints. Spigot inc, an international digital marketing company. A spigot or tap or faucet is a valve for controlling the release of a gas or liquid. Spigot joint article about spigot joint by the free dictionary. Sep 18, 2017 socket and spigot joint assembly and sectional views for more machine drawing videos.
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. Socket and spigot cotter joint the socket and spigot cotter joint is shown in fig 2. Examples of sizes mm joint assembly stretch the seal onto the spigot and position against the shoulder. Cotter joint these types of joints are used to connect the end of a rod or bar to a shaft. Shearing away of socket if dw spigot end cotter joint modes of failure. To understand the design steps let take a question and solve it step by step. At4 spigot, nato reporting name for 9k111 fagot, a russian antitank missile. Flexlok joint is cast of ductile iron and is accurately machined to accommodate the ball of the adjoining pipe.
Design of cotter joint animation step by step procedure. These joints are not suitable where the members are under rotation. Modeling and analysis of cotter joint ijert journal. A thickness of the cotter by the emperical relationship. 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. The socket and the spigot are provided with a narrow rectangular slot. Design a socket and spigot joint to resist a tensile load of 28kn. A cotter is essentially a tapered piece of mostly the same material as that of the shaft. Appropriate slots are cut in the sleeve and in the cylindrical rods. A socket is formed by expanding the end of one rod in which the spigot end of the other rod is inserted. Cotter joints use a transverse wedge with cylindrical or conical surfaces, and a longitudinal wedge. Spigot, the male end of a pipe designed to be connected with a spigot and socket joint. Cotter joint is also called as socket and spigot joint. The socket and spigot cotter joint is shown in fig 2.
Aug 04, 2015 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. Cotter joint a cotter joint is used to connect rigidly two coaxial rods or bars which are subjected to axial tensile or compressive forces. The cotter is locked in position by means of a screw as shown in fig. The flexlok joint gasket recess in the socket is designed and manufactured to. The applications of the sleeve and cotter joint is the joint between the piston rod and crosshead of the engine. The seal must sit evenly against the spigot shoulder. Chapter 7 cotter and knuckle joints machine design. Nov 07, 2009 design procedure for the spigot and cotter joint to understand the design steps let take a question and solve it step by step. In this article, i will be explaining about cotter joint in a detailed way. Socket and spigot cotter joint and its design engineers. Cut section of socket and spigot joint 3272012 2 hareesha n g, dsce, blore78.
A cotter is driven tightly through the slots in the rods which are kept slightly mis aligned. 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. A cotter is a flat wedge shaped piece of rectangular crosssection and its width is tapered either on one side or both sides from one end to another for an easy adjustment. Ppt cotter joint powerpoint presentation free to view. Design of socket and spigot cotter joint linkedin slideshare. The buckle or a coupler is a mechanical joint used to connect two members which are subjected to tensile loading which require slight adjustment of length or tension under loaded conditions. What are the applications of socket and spigot cotter joint. Spigot and socket joint, joints in water supply pipes. 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 joint at the apex of the neck is a pivot joint. Figure 315, page 102, bhandari socket cotter spigot front view top view side. 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 of socket and spigot joint bending mechanics.
Spigot is formed on one of the rods and socket is formed on the other. 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. These joints may be subjected to tensile or compressive forces along the axes of the rods. The design procedure for cotter joint is made to calculate. 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 and socket joint cotter joint rods, having axial tensile or compressive forces are connected by cotter joints. There are a three types of cotter joint 1 socket and spigot cotter joint 2 sleeve and cotter joint 3 gib and cotter joint. Equalize the stress in the seal by lifting and releasing at a few points. Socket and spigot joint part design, assembly and drawing of all parts with solidworks. Video lecture on design procedure of cotter joint, socket and spigot joint from design of cotter joint, knuckle joint,levers and offset links. The grabcad library offers millions of free cad designs, cad files, and 3d models. See all design to learn to design and assemble the parts in diff ways and methods. Cotter and knuckle joint cotter and knuckle joints 431 1. 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.
This hole is for a cotter pin it looks similar to a bobby pin for the hair, that helps to keep the wheel on while the wheel is turning. Cotter joints can be quickly assembled as well as disassembled. In this case one end of the first rod is enlarged in diameter to some. Types of cotter joints socket and spigot cotter joint sleeve and cotter joint gib and cotter joint.
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 of socket collar, b,t,l width, thickness and length of cotter. Mar 27, 2012 cotter and knuckle joints hareesha n g dept. Cotter joint article about cotter joint by the free dictionary. Cotter and knuckle joints understanding engineers gallery. Design of gib and cotter joint for strap end of a connecting rod. Design procedure of cotter joint, socket and spigot joint. It contains a sleeve and two wedge shaped tapered cotters.
Rods may be of different cross sections like circular or square. For example, on a childs wagon, the axles have a hole in each outside end. What are the practical application of cotter joint. 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 drawings of socket, spigot, and cotter are studied. Sleeve cotter joint pdf the working of the cotter andsleeve and cotter and gib are shown below. One of these is called a ball and socket joint, which is a subtype of. A diameter of the spigot on the basis of tensile stress. Cotter the taper of usually 1 in 24 is provided for following two taper side reasons. 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. Dec 21, 2017 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. Cotter joint is used to connect two rods or components which are subjected to tension or compression. Socket and spigot cotter joint autodesk inventor part.
In a socket and spigot cotter joints, one end of the rods is provided with a socket type of. Design of gib and cotter joint for strap end of a connecting. The molten lead solidifies quickly and makes the joint water tight. 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. The locking device may be a taper pin or a set screw used on the lower end of the cotter. The draw of the cotter is generally taken as 2 to 3 mm when all the parts of the joint are made of steel, the following proportions in terms of the diameter of the rod d are generally adopted d11. Knuckle joint definition of knuckle joint by the free. 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. Following are the three commonly used cotter joints to connect two rods by a cotter.
A cotter joint is a simple and compact connection and is easily assembled and disassembled. Lubrication of the socket or spigot is not required. Design a cotter joint subjected to a tensile load of 35 kn and a compressive load of 40 kn. The socket and spigot cotter joint is shown in fig. Sleeve and cotter joint is a type of joint used to typically connect two similar coaxial cylindrical rods. Spigot fits inside the socket and the cotter is passed through. The assembly of socket and spigot joint was created as per the drawing specification. Spigot and socket joint pipes are joined and sealed using either a rolling rubber or a sliding rubber ring respectively. A wide variety of spigot and socket joints options are available to you, there are 394 suppliers who sells spigot and socket joints on, mainly located in asia. Failure of spigot in tension across the weakest section. It consist of 1 spigot 2 socket 3 cotter application. The 3d models of socket and spigot joint parts socket, spigot, cotter are created using autocadcatia. Ball and socket joint, in vertebrate anatomy, a joint in which the rounded surface of a bone moves within a depression on another bone, allowing greater freedom of movement than any other kind of joint.
Cotter joint contains has mainly three components 1. Cotter joint has mainly three components spigot, socket and cotter as shown in figure 9. It is most highly developed in the large shoulder and hip joints of mammals, including humans. Socket and spigot cotter joint is used to connect circular rods. The end of the bar has a hole in it and it is called a lug. Design a cotter joint subjected to a tensile load of 35 kn and a. Join the grabcad community today to gain access and download. The following are some of the commonly used cotter joints. No, the only examples of ball and socket joints i can think of in the human body are the shoulders and hips. The thick wall and bell section provides superior strength to minimize the stresses resulting from installation and service conditions. It consists of central hexagonal nut called coupler and tie rod having righthand and lefthand threads. Spigot and socket joint definition and meaning collins. 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.
A cotter joint is a temporary fastening and is used to connect rigidly two coaxial rods or bars which are subjected to axial tensile or compressive forces without rotation. 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. All the parts of the joints are made from same material with following allowable stresses. Examples of this form of articulation are found in the hip, where the round head of the femur ball rests in the cuplike acetabulum socket of the pelvis. Scribd is the worlds largest social reading and publishing site. A set of 10mm cotter pin joints enable your creation have moving arms, legs and head. Muttagi, slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Cotter joints are used to connect two rods, subjected to tensile or compressive forces along their axes. 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.
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