Mechanical joints may be temporary or permanent, most types are designed to be disassembled. Socket and spigot cotter joint and its design engineers. Use a propane burner with a large burner head to heat the cement mortar inside the spigot end. Analysing the base of precast column in socket foundations. Spigot inc, an international digital marketing company. The allowable for the steel used in the joint are 60mpa in tension. The force is uniformly distributed in different parts. Latest machine design questions and answers pdf free download 1. The joint is made by caulking in spun yarn jute and then filling the remainder of the joint space by molten lead and. Design of socket and spigot joint bending mechanics. 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. Restrained socket joints 9 restrained socket joints 9.
Because of the wedging design utilized, the force between the spigot and the socket of the joint is essentially constant at any given pressure thrust regardless of the tightness or looseness of the joint fit or the joint deflection. A socket foundation connection is defined as rough when shear keys, responsible by the load transfer between the column and socket, are executed in the internal socket walls and on the precast column along the embedment region. Unit vi shafts design of solid and hollow shafts for strength and rigidity design of shafts for combined bending and axial loads shaft sizes bis code. These two specimens had smooth interfaces at the internal faces of the socket.
The normal lead, in a worm having multiple start threads, is given by a ln b ln. Coupler joint nipple joint union joint socket and spigot point integral and screwed flanged joints hydraulic joint and expansion joint. Spigot is formed on one of the rods and socket is formed on the other. Spigot and socket jointcotter joint rods, having axial tensile or compressive forces are connected by cotter joints. Poisson distribution, geometric distribution, normal distribution, uniform distribution, gamma distribution, beta distribution, weibull distribution, joint distribution of two. A spigot or tap or faucet is a valve for controlling the release of a gas or liquid spigot may also refer to. An experimental program with two fullscale specimens was carriedout. Now this kind of cotter joint is known as a socket and spigot type cotter joint.
The shear plane in case of bolts should a be across threaded. Spigot, the male end of a pipe designed to be connected with a spigot and socket joint. In this paper the consideration of the combined effect of buckling load and contact stress on the ball and socket joints have been taken, epically on the stress distribution in the contact area. The top countries of suppliers are india, china, from which the percentage of spigot and. Cotter joint has mainly three components spigot, socket and cotter as shown in figure 9. Design of socket and spigot cotter joint the socket and spigot cotter joint is shown in. Cotter joint new free download as powerpoint presentation. Design of keys stresses in keys cotter joints spigot and socket, sleeve and cotter, jib and cotter jointsknuckle joints. Assemble these parts correctly and then draw its following views to scale 1.
The socket and the spigot are provided with a narrow rectangular slot. Aim design and drawing of cotter joint function a cotter joint is. Besides explaining the fundamentals of the tools and techniques necessary to facilitate design calculations, the text includes extensive data on various. Spigot and socket joint, joints in water supply pipes. Spigot, an individual projecting microscopic tube in a spiders spinneret. Muff couplings, flanged couplings, flexible coupling, oldhams coupling and universal coupling parallel and tapered sunk keys hollow and flat saddle keys feather key and pin key. The book provides a comprehensive survey of machine elements and their analytical design methods.
Function a cotter joint is used to connect one end of a rod is provided with a socket type of. This item 6 spigot x 5 socket pvc reducing bushing sched 40. So in most of the design handbook the normal distribution taken is triangular over. 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. Spigot joint article about spigot joint by the free. Design of keys stresses in keyscotter jointsspigot and socket, sleeve and cotter, jib and cotter jointsknuckle joints. Rods may be of different cross sections like circular or square. To understand the design steps let take a question and solve it step by step.
Cotter joint is used to connect two rods or components which are subjected to tension or compression. Explain the design procedure of socket and spigot cotter joint. It is required to design a cotter joint to connect two steel rods of equal diameter. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. A wide variety of socket joint pipe options are available to you, such as equal, reducing. Bhandari, design of machine elements, tata mcgraw hill book co. Tricky machine design multiple choice questions and answers pdf.
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. There are 371 suppliers who sells spigot and socket joints on, mainly located in asia. Gib and cotter joint socket and spigot cotter joint p load carried by the rods, d diameter of the rods, d 1 outside diameter of socket, d 2 diameter of spigot or inside diameter of socket, d 3 outside diameter of spigot collar, t 1 thickness of spigot collar, d 4 diameter of socket collar, c thickness of socket collar, b mean width of cotter, t thickness of cotter, i length of cotter, a distance from the end of the slot to the end of rod, t permissible tensile. Design a socket and spigot joint to resist a tensile load of 28 kn. 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. Do you even understand what joint distribution and joint pdf are. The computeraided design cad files and all associated content posted to this. A mechanical joint is a section of a machine which is used to connect one or more mechanical part to another. Spigot, an individual projecting microscopic tube in. Socket and spigot repair collars for the repair of leaking socket joints on cast and ductile iron pipe.
Cut through the pipe using an angle grinder or pipe cutter with a disc suitable for steel and cement mortar. Sleeve cotter joint pdf the working of the cotterandsleeve and cotterand gib are shown below. 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. What are the practical application of cotter joint. The bearing stud is tapered and threaded, and fits into a tapered hole in the steering knuckle. Muttagi, slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Part modeling of socket end which is a part of cotter joint prof a. A ball joint consists of a bearing stud and socket enclosed in a casing. Feb 16, 20 design procedure of cotter joint, socket and spigot joint design of machine duration. Design procedure of cotter joint, socket and spigot joint design of machine duration.
Amazon warehouse great deals on quality used products. Spigot joint article about spigot joint by the free dictionary. They are used on virtually every automobile made and work similarly to the ball and socket design of the human hip joint. Sleeve cotter joint pdf the working of the cotter and sleeve and cotter and gib are shown below. Muff couplings, flanged couplings, flexible coupling, oldhams coupling and universal coupling parallel and tapered sunk keys hollow and flat saddle keys. Cotter and pin joints socket and spigot joint gib and cotter joint sleeve and cotter joint and knuckle joint. Show percentage area covered under various specification limits. A backing ring is used inside the pipe joint when making a a butt weld b fillet weld. Design model and recommendations of columnfoundation.
Cotter joints can be quickly assembled as well as disassembled. Cotter joint is used to connect two rods subjected to axial tensile or compressive loads. Design of welded joints for various loading conditions in torsion, shear or direct loads, eccentrically loaded joints. Machine design is a text on the design of machine elements for engineering undergraduates of mechanical, production and industrial disciplines. The two rings are pulled together by tightening the nuts at the end of each stud, this in turn pulls the joint together, the gasket then forms a tight seal around the socket stopping the leak. Forsheda 140 lamell sliding rubber seal permits installation with very little force as there is lubricant enclosed within the seals sliding layer, thus there is no friction between. 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 socket and spigot cotter joint is shown in fig. Aug 31, 2014 a gib of cotter joint b sleeve and cotter joint c spigot socket cotter joint d knuckle joint e universal coupling. Details 01 mechanical engineering design, design method, aesthetic and ergonomics consideration in design material properties and their uses in design manufacturing considerations in design.
Failure occurs when the maximum normal stress is equal to the tensile yield strength. Mar 31, 20 part modeling of socket end which is a part of cotter joint prof a. The effect of mechanical combined contact stress with. This research is motivated by the lack of information and guidelines on the behavior of column bases in the embedded region. Design of socket and spigot joint free download as powerpoint presentation. This paper analyzes the behavior of the base of a precast column in the socket foundation with smooth interfaces. The distribution of bearing pressure will be similar to that as shown in fig.
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 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. Tricky machine design multiple choice questions and. Following are the three commonly used cotter joints to connect two rods by a cotter. Cutting steel water pipe pe coated, cement mortar lined steel water pipe a. Check the shear strength of the key against the normal strength of the shaft. Model and recommendations for the design of rough socket. All the parts of the joint are made from same material with following allowable stresses. Because of the wedging design utilized, the force between the spigot and the socket of the joint is essentially constant at any given pressure thrust regardless of the tightness or looseness of the joint fit. Design of spigot and socket cotter joint, gib and cotter joint and knuckle joint.
The enlarged end is called socket or bell whereas the normal end is called spigot. Design a cotter joint subjected to a tensile load of 35 kn and a compressive load of 40 kn. Unit vi shafts design of solid and hollow shafts for strength and rigidity design of shafts for combined bending and axial loads shaft sizes. Spigot fits inside the socket and the cotter is passed through both the socket and the spigot. 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. Mec first semester course details scheme of instruction. A wide variety of spigot and socket joints options are available to you, such as plastic. Spigot and socket joint cotter joint rods, having axial tensile or compressive forces are connected by cotter joints.