It has uniform thickness and the width dimension is given a slight taper. Aug 31, 2014 a gib of cotter joint b sleeve and cotter joint c spigot socket cotter joint d knuckle joint e universal coupling. Cotter pulls the rod and socket tightly together clearance must be provided for adjustment. The dimensions for a socket and spigot cotter joint may be obtained by.
Cotter joint cotter joints with socket and spigot ends for circular bars slots are wider than the cotter. Jun 03, 2017 a gib of cotter joint b sleeve and cotter joint c spigot socket cotter joint d knuckle joint e universal coupling. Knuckle joint, cotter joint and turn buckle the article contains the questions and answers related to the design of joints including knuckle joint, turn buckle and cotter joint. Cotter joint is used to connect two rods or components which are subjected to tension or compression. Sleeve and cotter joint, socket and spigot joint and.
Design of gib and cotter joint for strap end of a connecting rod. Unit v keys, cotters and knuckle joints design of keys stresses in keys cotter joints spigot and socket, sleeve and cotter, jib and cotter joints knuckle joints. Appropriate slots are cut in the sleeve and in the cylindrical rods. The cotter passes through slots made in two coaxial parts and thus prevent the relative motion between them. 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. This is due to the fact that, the cost of cotter is less as compared to socket and spigot.
Determine the thickness of a 120 mm wide uniform plate for safe continuous. Design and draw a neat sketch of spigot rod for the cotter joint using the following data. It is uniform in thickness but tapering in width, generally on one side. The socket and the spigot are provided with a narrow rectangular slot. This ensures tightness of the joint in operating condition and prevents loosening of the parts socket and spigot cotter joint notation used. Material of two rods and cotter is steel 30 c8 s yt 400nmm2, s yc 2 s yt and s sy 0.
The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. 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. 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. This cavity or slot is kept slightly out socket and spigot joint front view 32 3 r 50 o 24 3 o24 o30 o66 8 28 40 90 4 40 28 10 r a front view full in section left side view roda socket cotter collara collarb spigot rodb socket and spigot joint fig 4.
Cotter joint these types of joints are used to connect the end of a rod or bar to a shaft. Why the cotter in the cotter joint is kept as weakest part. All the parts of the joint are made from same material with following. Design of gib and cotter joint for strap end of a connecting. A cotter is a rectangular cross section of uniform thickness and varying width with one of its longer sides.
Socket and spigot cotter joint is used to connect circular rods. Sep 18, 2017 socket and spigot joint assembly and sectional views for more machine drawing videos. Hence, if at all there is a failure, cotter should fail instead of socket and spigot. 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. Ppt cotter joint powerpoint presentation free to view. It includes the various applications of the joints and also the comparison of the joints.
A cotter joint is used to connect one end of a rod is provided with a socket type of end and the other end of the rod is inserted to a socket. A cotter joint for connecting two rods along which tension or compression act is made with ends of the rod especially made. One rod end carries a spigot the end to be inserted while the other rod end is finished in form of a socket. 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. Rods may be of different cross sections like circular or square. The assembly of socket and spigot joint was created as per the drawing specification.
This document is highly rated by mechanical engineering students and has been viewed 1592 times. They are used on virtually every automobile made and work similarly to the ball and socket design of the human hip joint. Exploded view of cotter joint mainly cotter joint is manufacture by using deformation process. Cotter joint free download as powerpoint presentation. Machine design mechanical engineering multiple choice. When the cotter is hammered, the rods are drawn together and tightened. Slots are provided in the spigot and socket ends to accommodate the cotter. Ppt knuckle joint powerpoint presentation free to view. Sleeve cotter joint pdf the working of the cotter andsleeve and cotter and gib are shown below. The end of one rod is forged in the shape of a socket and the other in the shape of a spigot refer fig 21. The permissible stress for carbon steel under static loading is generally taken as a 20003000 kgpm2 b 30004000 kgcm2 c 40004500 kgcm2. Cotter joint has mainly three components spigot, socket and cotter as shown in figure 9. 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. Winner of the standing ovation award for best powerpoint templates from presentations magazine.
Spigot is formed on one of the rods and socket is formed on the other. A metal is either hot or cold, is plastically deform into desire shape. May 11, 2020 chapter 7 cotter and knuckle joints machine design, mechanical engineering mechanical engineering notes edurev is made by best teachers of mechanical engineering. It is required to design a cotter joint to connect two steel rods of equal diameter. The woodru cylindrical disc having segment key is capable of tilting in a r curvature as the disc from which.
Gib and cotter joint socket and spigot cotter joint. Design of cotter joint socket and spigot joint it is used to connect two coaxial rods under the action of axial tensile or compressive loads. A socket is formed by expanding the end of one rod in which the spigot end of the other rod is inserted. The assembly consists of inserting the spigot end into the socket end and putting the cotter into their common slot. Design a socket and spigot cotter joint to connect two steel rods of equal diameter. The shear plane in case of bolts should a be across threaded. Explain the design process for spigot and socket cotter joint with neat sketch. Unit vi shafts design of solid and hollow shafts for strength and rigidity design of shafts for combined. The slots in the spigot rod and in socket are made slightly larger then the cotter with one side straight and the other side tapered. The molten lead solidifies quickly and makes the joint water tight. Design a cotter joint subjected to a tensile load of 35 kn and a. Socket and spigot cotter joint autodesk inventor part. Socket and spigot cotter joint for 20mm dia shaft 3d cad.
Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. The dimensions for a socket and spigot cotter joint may be obtained by considering the. Design of socket and spigot cotter joint linkedin slideshare. The cotter has uniform thickness and the width dimension b is given a slight taper. What are the practical application of cotter joint.
Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Modeling and analysis of cotter joint ijert journal. Design of socket and spigot joint free download as powerpoint presentation. The factor of safety for rods, spigot end and socket end.
Restrained socket joints 9 restrained socket joints 9. Cotter joint a cotter joint is used to connect rigidly two coaxial rods or bars which are subjected to axial tensile or compressive forces. Following are the three commonly used cotter joints to connect two rods by a cotter. Spigot and socket joint definition and meaning collins. See all design to learn to design and assemble the parts in diff ways and methods. 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 as shown in fig 8. The computeraided design cad files and all associated. Nov 29, 20 spigot and socket cotter joint this type of joint is used for round rods. The effect of stress concentration due to the slot is neglected. Types of cotter joints following are the three commonly used cotter joints to connect two rods by a cotter. 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. Socket and spigot cotter joint and its design engineers. Design of various types of riveted joints under different static. Socket and spigot cotter joint for 20mm dia shaft socket and spigot cotter joint for 20mm dia.
A cotter joint for connecting two rods along which tension. Cotter joints can be quickly assembled as well as disassembled. The shear plane in case of bolts should a be across. Muttagi, slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Chapter 7 cotter and knuckle joints machine design. Axial load 30 kn tensile stress 50 nmm 2 2crushing stress 90 nmm 2and shear stress 35 nmm. Spigot and socket jointcotter joint rods, having axial tensile or compressive forces are connected by cotter joints. Unit v keys, cotters and knuckle joints design of keys stresses in keyscotter jointsspigot and socket, sleeve and cotter, jib and cotter jointsknuckle joints. The construction of a cotter joint, used to connect two rods a and b is shown in fig. 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. Nov 22, 2017 a gib of cotter joint b sleeve and cotter joint c spigot socket cotter joint d knuckle joint e universal coupling. Design of cotter joint bending strength of materials. Determine the thickness of a 120 mm wide uniform plate for safe continuous operation. Typical applications involve screw jack,fly press, c clamp,testing machines, lead screw of lathe machine and many other machine tool applications.
A cotter is driven tightly through the slots in the rods which are kept slightly mis aligned. Socket and spigot cotter joint the socket and spigot cotter joint is shown in fig. A key attached movement is known as feather turning moment and also permits key being a sliding fit in the key 6. Spigot and socket joint pipes are joined and sealed using either a rolling rubber or a sliding rubber ring respectively. Power screw design machine design notes,procedures,problems. Muttagi, slideshare uses cookies to improve functionality and performance, and to provide. The socket and spigot cotter joint is shown in fig. Permissible shear stress for the cotter material, and. Design and analysis of knuckle joint by using fea the most commonly used types of cotter joints are. Spigot and socket joint cotter joint rods, having axial tensile or compressive forces are connected by cotter joints. A ball joint consists of a bearing stud and socket enclosed in a casing. Mechanical engineering machine design important mcq pdf all. Socket and spigot cotter joint and its design engineers gallery.
Joint between piston rod and crosshead of steam engine 2. Instructions the parts and assembly of the cotter joint is. Keys, cotter and unit 5 key, cotter and knuckle knuckle. Spigot and socket cotter joint this type of joint is used for round rods. The ends are normally made by forging and rectangular hole is also created. Design a typical cotter joint to transmit a load of 50 kn in tension or. The spigot of a cotter joint has a diameter d and carries a slot for cotter.
Sleeve and cotter joint, socket and spigot joint and knuckle joint drawn by r. The socket and spigot cotter joint is shown in fig 2. Sleeve and cotter joint is a type of joint used to typically connect two similar coaxial cylindrical rods. The factor of safety for rods, spigot end and socket. Cotter joint has mainly three components spigot, socket and cotter.
Bolted joints design of bolts with prestresses design of joints under eccentric loading locking devices both of uniform strength, different seals. When cotter is inserted in slot through socket and spigot and pressed by means of hammer, it becomes tight due to wedge action. The lateral bearing edges of the cotter and the bearing slots are generally made semicircular instead of straight fig. The 3d models of socket and spigot joint parts socket, spigot, cotter are created using autocadcatia. Design of cotter joint cotter joint is also called as socket and spigot joint. A backing ring is used inside the pipe joint when making a a butt weld b fillet weld c sleeve weld d socket weld e tube weld. The end of the bar has a hole in it and it is called a lug. The end of the rod which goes into a socket is also called spigot. A cotter is driven tightly through the slots in the rods which are kept. Design of socket and spigot joint bending mechanics. Cotter joint the cotter joint offers the following advantages. 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. Each rod is subjected to an axial tensile force of 50 kn.
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 cotter joint pdf the working of the cotter and sleeve and cotter and gib are shown below. Spigot and socket joint, joints in water supply pipes. The drawings of socket, spigot, and cotter are studied. Key points to remember a power screw is a device which is used to convert rotary motion into translatory motion and thereby transmitting power. In a socket and spigot cotter joint, one end of the. It contains a sleeve and two wedge shaped tapered cotters. Design a socket and spigot joint to resist a tensile load of 28 kn. The assembly and dismantling of parts of the cotter joint is quick and simple.
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