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