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 cotter passes through slots made in two coaxial parts and thus prevent the relative motion between them. Misumi offers free cad download, short lead times, competitive pricing, and. Mechanical forging presses with knuckle joint partspecific motion characteristics.
Cotter joints may be used in areas subject to corrosion during operation, resulting in difficulty in turning rusty bolts and nuts of threaded connections. The design procedure for knuckle joint was explained in. Tractor trailer is useful equipment used in agriculture field or construction for carrying heavy goods. Cotter joints use a transverse wedge with cylindrical or conical surfaces, and a longitudinal wedge. Cotter joint a detachable joint that is fastened or adjusted by a wedge. Jul 03, 2015 computer aided machine drawing lab file. A free powerpoint ppt presentation displayed as a flash slide show on id. Knuckle joint introduction, parts and applications. Failure of cotter in shear considering the failure of cotter in shear as shown in fig. Sleeve and cotter joint, socket and spigot joint and knuckle joint drawn by r. Cut section of socket and spigot joint 3272012 2 hareesha n g, dsce, blore78. This permits design of the motion characteristics in accordance with the requirements of the parts to be.
Jan 07, 2017 cotter joint with sleeve auto cad tutorial satheesh p. Applications of cotter joint joint between the piston rod and the cross head of a steam engine. A cotter joint is used when no relative motion is permitted between the rods joined by the cotter. Images are taken from version 2 me, iit kharagpur research paper. Mar 01, 2016 video lecture on design procedure of cotter joint, socket and spigot joint from design of cotter joint, knuckle joint,levers and offset links chapter of design of machine for mechanical. There is always axial or linear line of action of load. Video lecture on design procedure of cotter joint, socket and spigot joint from design of cotter joint, knuckle joint,levers and offset links chapter of design of machine for mechanical. These joints may be subjected to tensile or compressive forces along the axes of the rods. Dimensional calculations of knuckle joint assembly by using c programming for academic problem purpose article pdf available january 2018 with 7,834 reads how we measure reads. Knuckle and ballandsocket joints indian institute of. View notes cotter and knuckle joint from none at lovely professional university. For large press forces, the gearbox with drive shaft, compact drive, and main motor is designed as a separate subassembly.
The variou s proportions of the joint as per empirical relations are. Square key of side d4 each and length l is used to transmit torque t from the shaft of diameter d to the hub of a pulley. The cotter is usually made of mild steel or wrought iron. The knuckle joint is a type of joint which is used in steering system in between the steering rod and pinion of the.
Joint between the piston rod and the tail and pump rod foundation bolt 8. An eye is formed at one end of the rod while a fork is formed at other end of rod. It is also used to connect a rod on one side with some machine part like a crosshead or base plate on the. Sleeve and cotter joint, socket and spigot joint and knuckle. 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. A mechanical joint is a section of a machine which is used to connect one or more mechanical part to another. Cotter and knuckle joint cotter and knuckle joints 431 1. Cotter a cotter is a flat wedge shaped piece of rectangular cross section and its width is tapered either on one side or on. Cotter and knuckle joints authorstream presentation. This knuckle joint is a part of my auto card project i have edited lots of shapes some are approximately value in diagram. 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. Question for cotter and knuckle joint 1 free download as word doc. Knuckle joint is used to connect two rods whose axes either coincide or intersect and lie in one plane, which are subjected to transmit axial tensile force on other hand cotter joint is used to connect two coaxial rods, which are subjected to either axial force or axial compressive force. Reinstall the outer knuckle to the ball joint studs.
A design procedure of cotter joint cotter joint introduction before going into detailed steps to design and find dimensions of cotter joint, it is necessary to understand clearly the various components, their functions and assembly of cotter joint. Download chapter 4fdesign of socket and spigot cotter joint. The low chamfer angle of the wedge assures tightness of the joint and provides selfbraking, which prevents the wedge from falling out. In this article,design procedure for knuckle joint and cotter joint were explained in a detailed manner with the help of videos. Design of various types of riveted joints under different static loading conditions, eccentrically loaded riveted joints. Now in that class we have designed what is known as knuckle joint that is the. 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. A knuckle joint is used to connect the two rods which are under the tensile load when there is requirement of a small amount of flexibility or when angular movement is necessary. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. The design procedure for knuckle joint was explained in this article. Explore the constraint window in inventor and assemble the ballandsocket joint. Download notes as on 622015 chapter wise zip click here download merged pdf 2nd mst all in one file click here.
Enlarged diameter of each rod by empherical relationship. How to convert pdf to word without software duration. Cotter joint is a flat wedge shaped piece of steel. A knuckle joint is a mechanical joint used to connect two rods which are under a tensile load, when there is a requirement of small amount of flexibility, or angular moment is necessary. A cotter is a flat wedge shaped piece of rectangular crosssection and its width is tapered either on one side. Pdf dimensional calculations of knuckle joint assembly by. This increases the bearing area and permits drilling while making the slots.
This pin is secured in its place by the means of split pin. Misumi offers free cad download, short lead times, competitive pricing, and no minimum order quantity. Very high tightening force due to wedge action, which prevents loosening of parts in service. If the cotter pin holes dont line up with a slot in the castle nut, tighten the nut further until the cotter pin can be installed. Mechanical joints may be temporary or permanent, most types are designed to be disassembled. Cotter joint with sleeve auto cad tutorial satheesh p. Using a drill press, bore a hole down the centre of the knuckles, to take a snugfitting brass hinge pin. Select multiple pdf files, and combine them into a single pdf document with the click of a button. Mar 27, 2012 cotter and knuckle joints hareesha n g dept. Since the cotter is in double shear, therefore shearing area of the cotter 2 b t and shearing strength of the cotter 2 b t equating this to load p, we have p 2 b t from this equation. Cotter joints are the joints made with the help of cotter. 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. The enlarged ends of the rods butt against each other with a common sleeve over them. Cotter joint with sleeve auto cad tutorial youtube.
It is capable of transmitting ies2002 a twisting moment b an axial tensile as well as compressive load. Cotter and knuckle joints understanding engineers gallery. May 08, 2017 the cotter is usually made of mild steel or wrought iron. The knuckle joint is a type of joint which is used in steering system in between the steering rod and pinion of the steering gear, as the line of the action axis of both the mechanical parts are intersecting and lies in different planes, so it is. Nov 29, 20 the variou s proportions of the joint as per empirical relations are. What is the difference between cotter joint answer sahil knuckle joint is used to connect two rods whose axes either coincide or intersect and lie in one plane, which are subjected to transmit axial tensile force on other hand cotter joint is used to connect two coaxial rods, which are subjected to either axial force or axial compressive. Knuckle joint can be classified into a large number of types based on its size, shape, specification, application and other criteria. During transportation variable stresses act on knuckle joint which causes failure of joint. A hinged joint in which a pin fastens the ends of two rods, one of which has an eye that fits between the two perforated projections of the. Keys, cotter and unit 5 key, cotter and knuckle knuckle. Design cotter joint free download as powerpoint presentation. The link drive system of the mml2 developed by schuler can be made very flexible during the design of the press. Ppt knuckle joint powerpoint presentation free to view. The parts and assembly of the knuckle joint and ballandsocket joint are shown below.
Cotter joint cotter and knuckle joints are fasteners used to connect two roads transmitting axial force. The cotter is locked in position by means of a screw as shown in fig. Assemble the knuckle joint and clamp it between two stout battens to keep both components perfectly aligned. Cotter gets locked because of the frictional force of the contacting surfaces. 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. Torque the upper and lower ball joint nuts to 70 ftlbs 95 nm.
Outside diameter of eye or forkmm thickness of each eye. The knuckle joint is used to connect two rods under tensile load. Cotter pin disambiguation, a pin or wedge used to fix parts rigidly together cotter farmer, the scots term for a peasant farmer formerly in the scottish highlands cotter surname, a surname including a list of people with the name cotter, arkansas, united states. 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. Knuckle joints, check out the variety of configurable, knuckle joints for industrial applications. Following are the three commonly used cotter joints to connect two rods by a cotter. A hinged joint in which a pin fastens the ends of two rods, one of which has an eye that fits between the two perforated projections of the other. Chapter 4edesign of rivets for eccentrically loaded joints.
Some standard proportions for dimensions of the knuckle joint are taken as. It is a kind of hinged joint between two rods, often like a ball and socket joint. Scribd is the worlds largest social reading and publishing site. Dimensions can be determined using these empirical relations and the strength equations can be then used as a check. Sleeve cotter joint pdf the working of the cotter and sleeve and cotter and gib are shown below. What are the practical application of cotter joint.
Sleeve and cotter joint, socket and spigot joint and. Cotter joint article about cotter joint by the free. A knuckle joint may be readily disconnected for adjustments or repairs. The knuckle joint assembly consists of the following major components.
Knuckle joint 3272012 5 hareesha n g, dsce, blore78. Now this kind of cotter joint is known as a socket and spigot type cotter joint. Sleeve cotter joint pdf the working of the cotterandsleeve and cotterand gib are shown below. Manufacturers usually have a model number for each type of knuckle joint they manufacture. Knuckle joint machinecut joint woodworking archive. Instructions the parts and assembly of the cotter joint is. The design procedure for knuckle joint is made to calculate. Cotter joints are used to connect two rods, subjected to tensile or compressive forces along their. The joint allows a small angular moment of one rod relative to another. The eye fit inside the fork and a pin is passed through both the eye and fork.
Pdf dimensional calculations of knuckle joint assembly. You have each chapter of your pdf book as separate files, and you want to merge them into one file. Cotter joint a cotter joint is used to connect rigidly two coaxial rods or bars which are subjected to axial tensile or compressive forces. Design procedure of cotter joint, socket and spigot joint.
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