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 synovial joints are the most common type of joint because this joint helps us to perform a wide range of motion such as walking, running, typing and more. Spigot and socket joint pipes are joined and sealed using either a rolling rubber or a sliding rubber ring respectively. The end of the rod which goes into a socket is also called spigot. As a result, each joint has particular training needs. The low chamfer angle of the wedge assures tightness of the joint and provides selfbraking, which prevents the wedge from falling out. Cotter joints can be quickly assembled as well as disassembled. Spigotandsocket joint article about spigotandsocket. Mechanical joints may be temporary or permanent, most types are designed to be disassembled. A mechanical joint is a section of a machine which is used to connect one or more mechanical part to another. Design procedure of cotter joint with 3d visualization of different type of failures in different parts of joint. Previous article cotter and knuckle joints understanding.
They are considerably more economical to make and install than flanged joints. 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. We shall learn that there are three cotter joints for connecting the circular rods. If you have to make many joints or mass produce a product, it is a good idea to test different joint solutions in. 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.
Sleeve and cotter joint is a type of joint used to typically connect two similar coaxial cylindrical rods. Sleeve cotter joint pdf the working of the cotterandsleeve and cotterand gib are shown below. Design of socket and spigot joint free download as powerpoint presentation. Design procedure of cotter joint, socket and spigot joint design of machine.
The sliding rubber ring is installed using a soft soap lubricant. The cotter is usually made of mild steel or wrought iron. A cotter is driven tightly through the slots in the rods which are kept slightly mis aligned. Socket and spigot joint assembly and sectional views for more machine drawing videos. Which of the following is not a part of cotter joint. Failure of the rod spigot in tension p area x tensile stress. These joints may be subjected to tensile or compressive forces along the axes of the rods. Cotter joint a detachable joint that is fastened or adjusted by a wedge. Gib and cotter joint design procedure for the spigot and cotter joint. 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. In this case one end of the first rod is enlarged in diameter to some. Each joint or series of joints has a specific function and is prone to predictable levels of dysfunction. In a socket and spigot cotter joint, one end of the rods say a is provided with a socket type of end as.
If you have very long joints, it can be a good idea to make the arcs longer. Mcmastercarr is the complete source for your plant with over 595,000 products. Design procedure of socket and spigot cotter joint youtube. Cotter and knuckle joints understanding engineers gallery. Spigot is formed on one of the rods and socket is formed on the other. Results are provided for both a joint where the joint members are in continuous contact along the full length of the joint and for a joint with intermediate contact relief. Appropriate slots are cut in the sleeve and in the cylindrical rods. Cotter joint is used when the members are subjected to which type of stresses. Neiko 02486a black complete impact universal joint socket swivel set, 3 ares 700733piece impact universal joint set 14inch, 38inch and universal joint set, joint adapter ratchet socket, universal sleeve manual maxpower 3piece universal joints 14, 38 and 12 industrial grade spicer. Cotter joint is used to connect two rods or components which are subjected to tension or compression. Example joint between piston rod and cross head of a steam engine. Cotter joint article about cotter joint by the free. Socket and spigot cotter joint and its design engineers. Joints between the piston rod and the cross need of the steam engine.
Couplings i unprotected flange coupling having socket and spigot arrangement. An even tighter fit can be achieved with the third solution. Rods may be of different cross sections like circular or square. It consist of 1 spigot 2 socket 3 cotter application. 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.
Sleeve and cotter joint, socket and spigot joint and knuckle joint. Cotter joint has mainly three components spigot, socket and cotter as shown in figure 9. Next article sleeve and cotter joint and its design. Rod joints i cotter joints for circularrods socket and spigot joint ii cotter joints for roundrods sleeve and cotter joint iii cotter joints for square rods gib and cotter joint 3. Socket and spigot cotter joint is connecting two rods in such a way that it can transfer axial compression or tensile load. It has socket end,spigot end and cotter as main parts. Cbse class 12th engineering graphics syllabus aidlo. China spigot and socket joints manufacturers select 2020 high quality spigot and socket joints products in best price from certified chinese expansion joint manufacturers, ductile iron pipe suppliers, wholesalers and factory on. What are the practical application of cotter joint. Sleeve and cotter joint, socket and spigot joint and. Joints used in pipes water conveyance water engineering. It is not at all suitable to connect rotating shafts which transmit torque.
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. Remove the tire ball joint located under the axle, attached to the lower control arm use pliers or grips, rip out cotter bin unbolt the nut use a ball. 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. The bellandspigot ends allow for some angular deflection at the joint and provide easy assembly and fitup in the. Cotter joint is used to connect two rods subjected to compressive or axial tensile loads. 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. 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 of bolted and welded joints design of shafts. Lecture 3 numerical problem on simple truss by method of joints duration. 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.
This jointbyjoint idea has really taken on a life of its own, one i certainly didnt envision. It contains a sleeve and two wedge shaped tapered cotters. Spigot and socket jointcotter joint rods, having axial tensile or compressive forces are connected by cotter joints. Tierod and pipe joint i turnbuckle ii flange pipe joint 4. Aim design and drawing of cotter joint function a cotter joint is. In a socket and spigot cotter joints, one end of the rods is provided with a socket type of end and the other end of the rod is inserted into a socket the end of the rod which goes in to a socket is also called spigot. A socket is formed by expanding the end of one rod in which the spigotend of the other rod is inserted. The spigot end typically has the same outer diameter as the pipe and is usually fitted into another joint called a bell or socket. The mechanical pipe joint is formed as the pipe spigot is inserted into the bell socket and the gland is axially attached to the bell socket so that the restraining gasket is held between.
China spigot and socket joints, spigot and socket joints. The socket and spigot cotter joint is shown in fig 2. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Spigot and socket joint definition and meaning collins. Spigot fits inside the socket and the cotter is passed through.
Types of joints classification of joints in the human body. This joint is an economical means of joint restraint for buried joints with working pressures up to 400 psi. Synovial joints are flexible, movable, can slide over one another, rotatable and so on. Welded joints bellandspigot lapwelded joints bellandspigot lapwelded joints are available for all pipe diameters. A cotter joint is a simple and compact connection and is easily assembled and disassembled. Together, these two elements form what is commonly known as a bell and spigot joint. The various design equations for cotter joints design were put.
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