It is usually used in connecting a piston rod to the crosshead of a reciprocating steam engine, a piston rod and its extension. According to the classic definition by bill inmon see. 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. It contains a sleeve and two wedge shaped tapered cotters. Since t e weakest section of t e spigot is t at section. These joints are not suitable where the members are under rotation. Cotter joint piston tension physics free 30day trial. The example design problems and solution techniques are spelled out in detail. They require ease stitching to mold the cap to introduction to sleeves sleeves are both functional and design elements of a garment. Classification of cross sections, bending, shear, serviceability limit states 7. It is considered as the best method for collecting requirements. Nov 2003, apr2008, apr 2009 material is saved in welded joints and hence the machine element will be light if. For analysis, it is intended to design the model of knuckle joint in cad software. 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, foundation bolt etc.
Design of cotter joint bending strength of materials. All parts of the joint are made of the same material with the following allowable. A cotter joint is a simple and compact connection and is easily assembled and disassembled. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Let p load carried by the rods, d diameter of the rods, d1 outside diameter of sleeve, d2 diameter of the enlarged end of rod, t thickness of cotter, l length of cotter, b width of cotter, a distance of the. It does not mention outgassing problems caused by the relatively high vapor pressure of these metals. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. The fastener manual was intended primarily for aeronautical applica. The design stresses may be taken as 75 mpa in tension, 60 mpa in shear and 150 mpa in compression. Gtu paper analysis new syllabus chapter 1 design against. Following are the three commonly used cotter joints to connect two rods by a cotter.
Most mechanical joints are designed to allow relative movement of these mechanical parts of the machine in one degree of freedom, and restrict. 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. Design and draw a neat sketch of spigot rod for the cotter joint using the following data. Assemble the parts correctly and then draw the following views to a scale 1. Cotter joint has mainly three components spigot, socket and cotter as shown in figure 9. The following are some of the commonly used cotter joints. A free powerpoint ppt presentation displayed as a flash slide show on id. Joint pdf calculation example 1 consider random variables x,y with pdf fx,y such that fx. A textbook of machine design khurmi gupta bdd studocu. Design of gib and cotter joint for strap end of a connecting rod.
Cotter joint part designing and assembly in creo parametric 2. An introduction to the analysis and design of bolted connections. See all design to learn to design and assemble the parts in diff ways and methods. Mar 05, 2018 the career today youtube channel provide videos of various mechanical engineering courses, 6th to 12th class subjects and latest job information, career guide, exam strategies etc. X and y are jointly continuous with joint pdf fx,y e. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. The low chamfer angle of the wedge assures tightness of the joint and provides selfbraking, which prevents the wedge from falling out. 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. Why are welded joints preferred over riveted joints. Mechanical joints may be temporary or permanent, most types are designed to be disassembled. In this type of joint, a sleeve or muff is used over the two rods and then two cotters one on each rod end are inserted in the holes provided for them in the sleeve and rods. Socket and spigot cotter joints in a socket and spigot cotter joint, one end of the rods is provided with a socket type of end as. Cotter joint article about cotter joint by the free.
Flange coupling, swivel bearing, foot step bearing, socket and spigot joint, sleeve and cotter joint, knuckle joint, claw coupling, gib and cotter joint, bench vice, machine vice, pipe vice, drill jog, milling fixture, lathe toolpost, tool head of shaping machine. It is a kind of hinged joint between two rods, often like a ball and socket joint. Sleeve and cotter joint and its design engineers gallery. 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. It is required to design a knuckle joint connect two circular rods subjected to. The career today youtube channel provide videos of various mechanical engineering courses, 6th to 12th class subjects and latest job information, career guide, exam strategies etc. Material, factor of safety and manufacturing method are given for each machine element. It is required to design a knuckle joint connect two circular rods subjected to an axial tensile force of 50 kn. May 2014 socket and spigot cotter joint sleeve and cotter joint gip and cotter joint 7. The joint is made by removing metal from rod ends to create flat surfaces of depth of half the diameter of the rod as shown in figure 2.
Knuckle joint at one end of the rod the single eye is formed and double eye is formed at the other end of the rod. Sometimes, a sleeve and cotter joint is used to connect two round rods or bars. Design of gib and cotter joint for strap end of a connecting. A mechanical joint is a section of a machine which is used to connect one or more mechanical part to another. A cotter joint is a temporary fastening and is used to connect rigidly two co.
Since the sleeve end is in double 8 design of a gib and cotter joint for strap. Appropriate slots are cut in the sleeve and in the cylindrical rods. If the sleeve cap height is increased above the standard fitted sleeve, the cap will extend above the normal shoulder line. Autocad mechanical practice drawings pdf free download. Knuckle joint is a joint between two parts allowing movement in one plane only. Ppt cotter joint powerpoint presentation free to view. This article explains sleeve and cotter joint with its exploded view, assembled view advantages. In a socket and spigot cotter joints, one end of the rods is provided with a socket. Sleeve and cotter joint autodesk inventor part design and. Sleeve cotter joint pdf the working of the cotter and sleeve and cotter and gib are shown below. Or they could have a bivariate joint gaussian pdf, or something in between as henning makholm points out.
Anuj gupta introduction 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. Cotter joint a cotter joint is used to connect rigidly two coaxial rods or bars which are subjected to axial tensile or compressive forces. Introduction to sleeves wild ginger fashion design and. In the above definition, the domain of fxyx,y is the entire r2. Winner of the standing ovation award for best powerpoint templates from presentations magazine. In fact, the joint pdf given there is zero in the second and fourth quadrants. Fundamentals of structural design part of steel structures. Joint probability density function joint continuity pdf. Safety of structures, limit state design, codes and specifications for the design 5.
The guide includes general design guidelines for the various joint parameters, an analytical design methodology, a description. In cotter joint clearance is also provided between cotter and slots to allow driven cotter to draw two parts together cotter is tapered a to withstand back movement due to impact load b due to taper shape, it is easy to remove cotter and dismantle the joint c for having perfect assembly of this joint when cotter is inserted in slot through. Dimensions can be determined using these empirical relations and the strength equations can be then used as a check. Cotter joint is used to connect two rods or components which are subjected to tension or compression. Design procedure for sleeve and cotter joint the career.
Sleeve and cotter joint is a type of joint used to typically connect two similar coaxial cylindrical rods. The applications of the sleeve and cotter joint is the joint between the piston rod and crosshead of the engine. The knuckle joint is a type of joint which is used in steering system in between the steering rod and. Cotter joints use a transverse wedge with cylindrical or conical surfaces, and a longitudinal wedge. Axial load 30 kn, tensile stress 50 nmm2, crushing stress 90 nmm2 and shear stress 35 nmm2 10 3. It is not used for connecting shafts that rotate and transmit torque. Design procedure for sleeve and cotter joint subscribe you tube channel prime course link. Other products, such as steel rod ends, steel yoke ends and pins, cotter pins and coupling nuts commonly are provided generically as carbon steel. Design the joint and specify the dimensions of its components. Design a typical cotter joint to transmit a load of 50 kn in tension or compression.
Dimensions of a sleeve and cotter joint in terms of diameter of the rods d fig 4. 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. Design steps are given for all important machine elements. For example, the joinery used to build a house is different from that used to make puzzle toys, although some concepts overlap. 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. Aug 31, 2014 a gib of cotter joint b sleeve and cotter joint c spigot socket cotter joint d knuckle joint e universal coupling. Emphasis on the materials, properties and analysis of the machine element. However, some are intended for specific modeling tools, and hints have been provided in those cases. Unit 2 design of temporary design of temporary connections. Sometimes, a sleeve and cotter joint as shown in fig. That is just a pinjoint and not exactly a knuckle joint. The rods are coaxial and a small amount of angular movement between their axes is permissible. Buckling of webs, lateraltorsional stability, torsion, combination of internal forces 8.
Two random variables x and y are jointly continuous if there exists a nonnegative function fxy. Jad reduces the amount of time required to develop systems since it eliminates process delays and misunderstandings and improves system quality. Some of the parts are a bit more challenging than others, but none of them are meant to be difficult. Design a sleeve and cotter joint to resist a tensile load of 60 kn. Download as ppt, pdf, txt or read online from scribd. Cotter joint a detachable joint that is fastened or adjusted by a wedge. What are the practical application of cotter joint. There are many situations where two parts of machines are required to be restrained, for example two rods may be joined coaxially and when these rods are pulled apart they.
The spigot of a cotter joint has a diameter d and carries a slot for cotter. The shear plane in case of bolts should a be across threaded. Sleeve and cotter joint autodesk inventor part design. The example shows how design problems reed reiteration. The force of tension to be carried by the joint is 8000 n. 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. Background and motivation collecting requirements is an inherently difficult problems.
Cotter joint article about cotter joint by the free dictionary. All parts of the joint are made of the same material with the following allowable stresses. They require ease stitching to mold the cap to introduction to sleeves sleeves are both functional and design elements of. Cotter joints may be used in areas subject to corrosion during operation, resulting in difficulty in turning rusty bolts and nuts of threaded connections. Design of cotter joint free download as powerpoint presentation. Higher caps with more ease are more difficult to sew. Jad helps to avoid the requirements from being too specific and too vague, both of which cause trouble during implementation and acceptance. Can the joint pdf of two random variables be computed from. Design a cotter joint subjected to a tensile load of 35 kn and a. A design guide was developed for bolted composite structural joints. Barrett march 1990 the manual describes various platings that may be used for corrosion control including cadmium and zinc plating. Some standard proportions for dimensions of the knuckle joint are taken as. An introduction to the analysis and design of bolted.