Ndesign of socket and spigot cotter joint pdf from joints

How tight should a screw be, and how does that affect how much load it can. Cotter joint is used to connect two rods or components which are subjected to tension or compression. Mohair bear making supplies limited cotter t pin joints. 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. A cotter is a wedge shaped piece made of a steel plate. Design of spigot and socket cotter let p load carried by the rods, d diameter of the rods, d1 outside diameter of socket, d2 diameter of spigot or inside. Socket and spigot cotter joint and its design engineers gallery. Mainly used as the head joint, but can be used on all five joints for a totally floppy effect. To determine the number of joints to be restrained in a given situation, see thrust restraint design for ductile iron pipe published by the ductile iron pipe research association. Example joint between piston rod and cross head of a steam engine. Cotter pin joints these are the traditional form of teddy bear joint. Failure of cotter joint may causes accident, so it is necessary to design cotter joint to. 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. With decades of experience in the industry we supply more than just quality products but also the expertise and every day knowledge needed to help designers, specialist machine builders and product engineers with their projects and applications utilising components in.

Cotter joint has mainly three components spigot, socket and cotter as shown in figure 9. The various design equations for cotter joints design were put. The socket and spigot cotter joint is shown in fig 2. Durable screw joints made of special steel including those affected by. 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 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. The socket and the spigot are provided with a narrow rectangular slot.

A cotter joint is a simple and compact connection and is easily assembled and disassembled. Design of socket and spigot cotter joint linkedin slideshare. Sleeve cotter joint pdf the working of the cotter and sleeve and cotter and gib are shown below. The following are some of the commonly used cotter joints. A wide variety of spigot and socket joints options are available to you, there are 394 suppliers who sells spigot and socket joints on, mainly located in asia. Spigot and socket jointcotter joint rods, having axial tensile or compressive forces are connected by cotter joints. The end of the rod which goes into a socket is also called spigot.

Teddy bear joints, teddy bear supplies, christie bears ltd. If the allowable stresses in tension, compression and shear for the socket, rod and cotter. The cotter is usually made of mild steel or wrought iron. The permissible crushing stress is x times the permissible tensile stress for the material of spigot where x 1. Assume that about of the external load is felt by the. It is a mechanical joints which is used to become a fixed attaches to something or holds something in. The joint is made by caulking in spun yarn jute and then filling the remainder of the joint space by molten lead and then thoroughly caulking the lead. Oct 20, 2009 i believe safety joints lock into one position only, leaving no small parts to potentially cause a hazard. The distal bone is capable of motion around an indefinite number of axis, which have one common center. At4 spigot, nato reporting name for 9k111 fagot, a russian antitank missile. Cotter joint article about cotter joint by the free dictionary. The design of these types of joints are discussed, in detail, in the following pages.

Spigot, the male end of a pipe designed to be connected with a spigot and socket joint. Spigot joint article about spigot joint by the free dictionary. Rods may be of different cross sections like circular or square. 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. It is usually used in connecting a piston rod to the crosshead of a reciprocating steam engine, a piston rod and its extension as a tailor pump rod, strap end of connecting rod etc. This video explains design procedure of socket and spigot type of the cotter joint. So you can deliberatley make a bear with loose joints, so the arms swing around, or you can joint tight. Connection of piston rod to the crosshead of an engine, pump or compressor connection of a valve rod to its stem a rod connecting a steam cylinder to a base plate in a marine engine in a cotter. Socket end of rod a fits over the spigot end of rod b 2. Spigot is formed on one of the rods and socket is formed on the other.

Cotter joints use a transverse wedge with cylindrical or conical surfaces, and a longitudinal wedge. These joints are not suitable where the members are under rotation. 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. 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.

Spigot inc, an international digital marketing company. Ballandsocket joint, in vertebrate anatomy, a joint in which the rounded surface of a bone moves within a depression on another bone, allowing greater freedom of movement than any other kind of joint. A cotter is then driven tightly through a hole in order to make the temporary connection betw een the two 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. Excepting the 4mm 12mm joints that exclude the washers, each joint consists of two discs, one t headed cotterpin and two metal washers. These joints may be subjected to tensile or compressive forces along the axes of the rods. A socket is formed by expanding the end of one rod in which the spigotend of the other rod is inserted.

The ball and socket joint or spheroid joint is a type of synovial joint in which the ballshaped surface of one rounded bone fits into the cuplike depression of another bone. It has socket end,spigot end and cotter as main parts. Instructions the parts and assembly of the cotter joint is. In a socket and spigot cotter joint, one end of the rods say a is provided with a socket type of end as. 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. Following are the three commonly used cotter joints to connect two rods by a cotter. It enables the bone to move in many places nearly all directions. It is most highly developed in the large shoulder and hip joints of mammals, including humans. Muttagi, slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Design of gib and cotter joint for strap end of a connecting rod.

Spigot and socket joint, joints in water supply pipes. Design of socket and spigot joint bending mechanics. Design a cotter joint subjected to a tensile load of 35 kn and a compressive load of 40 kn. Cotter joints may be used in areas subject to corrosion during operation, resulting in difficulty in turning rusty bolts and nuts of threaded connections. Aim design and drawing of cotter joint function a cotter joint is. A socket is formed by expanding the end of one rod in which the spigot end of the other rod is inserted. Learn vocabulary, terms, and more with flashcards, games, and other study tools. I believe safety joints lock into one position only, leaving no small parts to potentially cause a hazard. The molten lead solidifies quickly and makes the joint water tight.

A rectangular hole is made in the socket and spigot. Combining the socket and welded pipe provides all of the benefits of the former, with the leak and corrosion benefits of the latter. Joints joints in the body wrist, shoulder, thigh can be compared with structures used in machines and simple devices hinge, ballandsocket, and sliding joints. To understand the design steps let take a question and solve it step by step. Spigot fits inside the socket and the cotter is passed through both the socket and the spigot. Fastener and joint design guide book section 1 define basic joint requirements external load types how loads are applied to a joint has a large impact concentric loads on the joints reliability. A set of 10mm cotter pin joints enable your creation have moving arms, legs and head. Watch next videos of design of cotter joint, knuckle joint,levers and. Sleeve cotter joint pdf the working of the cotterandsleeve and cotterand gib are shown below. Design procedure of cotter joint, socket and spigot joint design. Intooduction types of cotter joints following are the three commonly used cotter joints to connect two rods by a cotter. Spigot fits inside the socket and the cotter is passed through.

A cotter is driven tightly through the slots in the rods which are kept slightly mis aligned. Cotter joints cotter is a flat, wedgeshaped piece of steel cotter joint uses one or two cotters to connect two rods rigidly transmitting forces and motion, with no rotation of the rods applications. A spigot or tap or faucet is a valve for controlling the release of a gas or liquid. Cotter joints nut and bolts are more traditional and they give you more control on how tight or loose a joint is.

You can buy five 10mm cotter pin joints that contains 5 cotter pins and 10 fibre board disks enough for 5 joints, eg two arms, two legs and one head. Design procedure of cotter joint, socket and spigot joint. Cotter joint cotter joints cotter is a flat wedgeshaped. Universal joint socket best replacement universal joint. Design of gib and cotter joint for strap end of a connecting. Cotter and knuckle joints understanding engineers gallery. Cotter jointsnut and bolts are more traditional and they give you more control on how tight or loose a joint is. Gib and cotter joint design procedure for the spigot and cotter joint.

Spigot and socket joint definition and meaning collins. Your joints allow your body to move when your muscles contract. Joints between the piston rod and the cross need of the steam engine. Cotter joints can be quickly assembled as well as disassembled.