Cotter joint is a flat wedge shaped piece of steel. A cotter joint is a simple and compact connection and is easily assembled and disassembled. Contrary to this, permanent joints are intended to stay in fixed position for longer duration. Cut section of socket and spigot joint 3272012 2 hareesha n g, dsce, blore78. Cotter joints are the joints made with the help of cotter. 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. Clamp cylinder with magnetic field resistant auto switch. Advantages of knuckle joint the following are the advantages of knuckle joint. Cotter joint has mainly three components spigot, socket and cotter as shown in figure 9. 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.
Cotter joints are used to connect two rods, subjected to tensile or compressive forces along their axes. For making the joint, the eye end of the rod is aligned into the fork end of the other and then the pin is inserted through the holes. X and y are jointly continuous with joint pdf fx,y e. The knuckle joint assembly consists of the following major components. In knuckle joint the two views of which are shown in fig. Knuckle joint definition of knuckle joint by medical. Mechanical joints may be temporary or permanent, most types are designed to be disassembled. Following are the three commonly used cotter joints to connect two rods by a cotter.
Design of temporary unit 2 design of temporary connections connections structure 2. A gib is used along with the cotter to make this joint. M6 without tap m6 with tap m6 without tap m6 with tap symbol description part no. Cotter and knuckle joint cotter and knuckle joints 431 1. Reconnect the strut and ball joint tighten the nut and install the new cotter key. Such joints are permanent in nature and cannot be dismantled without breaking assembled parts. The following are some of the commonly used cotter joints. The cotter is locked in position by means of a screw as shown in fig. Gib and cotter joints are used for rods of square or rectangular cross section. It has socket end,spigot end and cotter as main parts.
Difference between temporary joining and permanent joining. Cotter joint a detachable joint that is fastened or adjusted by a wedge. There is always axial or linear line of action of load. Looking for downloadable 3d printing models, designs, and cad files. In the above definition, the domain of fxyx,y is the entire r2. The cotter is usually made of mild steel or wrought iron. Ppt knuckle joint powerpoint presentation free to view.
A cotter is a flat wedge shaped piece of rectangular crosssection and its width is tapered either on one side. Single knuckle joint m6 without tap single knuckle joint m6 with tap double knuckle joint m6 without tap double knuckle joint m6 with tap note 1 ia and ya are equivalent to the conventional models. Remove the tire ball joint located under the axle, attached to the lower control arm use pliers or grips, rip out cotter bin unbolt the nut use a ball. Knuckle joint part 1 mechanical engineering notes edurev pdf. Keys, cotter and unit 5 key, cotter and knuckle knuckle. Some standard proportions for dimensions of the knuckle joint are taken as. The low chamfer angle of the wedge assures tightness of the joint and provides selfbraking, which prevents the wedge from falling out. Joint probability density function joint continuity pdf. In this joint, one end of the rod is formed into an eye and the other into a fork double eye. For example two rods may be joined coaxially and when they are pulled apart they. Cotter joint is used to connect two rods or components which are subjected to tension or compression. View notes cotter and knuckle joint from none at lovely professional university.
Dimensions can be determined using these empirical relations and the strength equations can be then used as a check. Ch12 contents contents cotter and knuckle joints c h a. It contains a sleeve and two wedge shaped tapered cotters. Cotter and knuckle joints understanding engineers gallery. Knuckle joint definition, a joint forming a knuckle. Knuckle joint is yet another to join rods to carry axial force.
Sleeve cotter joint pdf the working of the cotterandsleeve and cotterand gib are shown below. A colour monitor with highest 32 bit colour display and with screen resolution 1024 by 768 pixels. These joints may be subjected to tensile or compressive forces along the axes of the rods. 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. Ckg1ackp1a ckg1bckp1b ckcy04 ckcya04 ckg1cckp1c weight basic weight includes the switch mounting rod. Solidworks tutorial sketch knuckle joint in solidworks. Before going into detailed steps to design the dimensions of the knuckle joint, it is essential to get oriented with all its components and their functions.
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. Cotter joint article about cotter joint by the free. A mechanical joint is a section of a machine which is used to connect one or more mechanical part to another. Note 2 knuckle pin, cotter pin and flat washer are provided as a standard for y and ya. These joints are not suitable where the members are under rotation. 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. What are the applications of sleeve and cotter joint answers. Also check the sway bar bolts they are cheap to replace and. Single knuckle joint double knuckle joint a knuckle pin, cotter pins, flat washers are equipped as a standard. Design of gib and cotter joint for strap end of a connecting rod. To create the knuckle joint assembly as a 3d solid model using catia v5 software. Basically, cotter joint is used in which there is no angular displacement between two rod o the other hand the knuckle joint is used in which there is necessity of angular displacement for e. Instructions the parts and assembly of the cotter joint is. Appropriate slots are cut in the sleeve and in the cylindrical rods.
Two random variables x and y are jointly continuous if there exists a nonnegative function fxy. In the whole assembly the cotter is the part with least material and easy to replace, hence for this economical and practical reason cotter is kept weakest, so that it can be replaced on failure. Here is the diagram showing the exploded view of knuckle joint. Sleeve and cotter joint is a type of joint used to typically connect two similar coaxial cylindrical rods. What are the practical application of cotter joint. That is just a pinjoint and not exactly a knuckle joint. Cotter joint a cotter joint is used to connect rigidly two coaxial rods or bars which are subjected to axial tensile or compressive forces.