Clutch design calculations pdf

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. All aspects of the available 2012 vehicle were reconsidered and either refurbished or redesigned for optimal performance, including the engine, transmission, front and rear end suspension systems, and the body as described in the project report design and optimization of a fsae vehicle. International journal of innovative research in science, engineering and technology vol. The clutch is activated either with a clutch pedal or with an electrohydraulic or electormechanical final control element. Temperature rise in clutch and design, analysis and fabrication of cooling system for clutch. In clutch design, the effect of this force must be considered in writing the equations of static equilibrium. In these devices, one of the shafts is typically driven by a motor or pulley, and the other shaft is driving another device. W total spring force n r 1 r o external radius of friction m r 2 r i internal radius of friction m. Determine stopping torque required if wheels are 36 inches in diameter. For designing of the diaphragm spring, 3d modelling software used is catia v5. You dont usually have a bending issue or a shear strength issue. Clutch c is shown here as having the steepest characteristic in the torque range.

The dog clutch studied is being used in the transfer case of trucks having four wheel drives. Before starting work on the design of any machine, get thoroughly familiar with what the machine is intended to accomplish and what special requirements or limitations must be considered. It is evident that the result of calculations cannot be a complete design. For example, initial calculations may have indicated that a certain size motor was required, but in designing the. Clutches theory of machines engineering reference with. Finite element analysis and optimal design of automobile clutch diaphragm spring, wookhee nam, choonyeol lee, young s. Parametric study of a dog clutch used in a transfer case. One of the earliest of these is the cone clutch, which is simple in construction and quite powerful. However, they are usually identified by their mode of actuation. The deflection of the diaphragm clutch can be reduced by introducing a strap plate. Handbook for chain engineering design and construction. This design change produced lesser losses compared to the original design and showed. Clutches are useful in devices with two rotating shafts. In a drill, for instance, one shaft is driven by a motor and the other is driving a drill chuck.

For a given dimension, the torque transmitted by cone clutch is higher than that of a single plate clutch. Design and analysis of diaphragm spring of a single plate. Thefootpedalispresseddown,thusthrowingtheclutchout. This project finds the stresses, deformations and frequencies in failure region during operation. The clutches are entirely selfcontained, and do not require additional bearing support. The design of single plate clutch is done for force motors new vehicle and is drawn by using theoretical calculation results. Raptor cone crusher cone of learning pdf 49972 cone cup boxing cone drills raptor 700 cone clutch design calculations pdf ims 12 gas drill point holder cone iso 40 dynamic cone penetration test yamaha raptor 660 2003 660 raptor z raptor summary hustler raptor wiring hustler raptor sport hustler raptor wiring diagram 2003 660 raptor. Bevel gear calculations 0bevel gears bevel gear v drives tooth profiles gear blank dimensions formulae for the determination of the external forces strength of teeth rules for the examination of the tooth profile by the graphic method example of spiral bevel gear design 6 oerlikon cycloid spiral bevel gear calculations design features. Introduction a clutch is a mechanical device that engages and. International journal of innovative research in science.

The clutch lets the driver control power flow between the engine and the transmission or transaxle. How to calculate the torque capacity of a clutch x. An energybalance in a slipping clutch can be stated as the power dissipated in the clutch equals the net rate of heat rejected from the clutch plus the rate of heat storage in the clutch. Clutch torque as a function of the release travel figure 10 illustrates the three fundamental clutch torque curves a b c, which all lead to the same maximum clutch torque with the same release travel. Cone clutch is used to transfer higher torque than same size of plate clutch due to greater contact area. This also al lows some flexibility in optimizing the power source as the design precedes. Design and analysis of diaphragm spring of a single plate dry. Department of automobile engineering, anna university, madras institute of technology ampus, indiac rahulmitautomobile. Dog clutch calculations dog clutch calculations morris9791 mechanical op 17 dec 09 08. A case study on design of a flywheel for punching press. Structural analysis of multiplate clutch request pdf. Load type static, slight impacts, service life 20,000 hours.

Also in this work efficient and reliable design of mechanical clutch is find out. The clutch design is unique, incorporating an independent camcage assembly installed alongside the offset ball cage. Wet clutch modelling techniques design optimization of clutches in an automatic transmission masters thesis in the automotive engineering manoj kumar kodaganti venu department of applied mechanics division of dynamics chalmers university of technology goteborg, sweden 20 masters thesis 20. A clutch is a device used to connect or disconnect a driven component from a prime mover such as an engine or motor. Study the design aspects and function of wet type multi. An accurate clutch torque control is required, which necessitates a good knowledge of clutch friction characteristics.

Determine torque per brake, assuming there are 10 sets of brakes. The clutch is intended for general starting of the automobile from rest, disconnecting the engine form the transmission in order to shift gears, and for avoiding the effect of large dynamic loads on the transmission which appear in transient conditions and on moving on different types of roads the friction clutch design, besides allowing for the main requirements minimum clutch weight. Mathematical modelling of temperature rise in clutch and. Design and analysis of friction clutch plate using ansys. Mechanical design prn childs, university of sussex clutches and brakes mechanical design 2. In this chapter we will present a complete design of a onespeed gearbox driven by a belt transmission and driving a chain transmission. The wet clutch is one of the part of transmission system in which with its design aspects efficiency will be improved. Design and fabrication of gear box full report download. Jan 19, 2018 for the love of physics walter lewin may 16, 2011 duration. Design and structural analysis of single plate friction clutch. Mechanics and machine design, equations and calculators. Clutches and brakes a truck has total weight of 40,000 lb and is traveling 60 mph. A modified design has been suggested, but further study and analysis needs to be done to checks its feasibility. Following are the components used in the cvt, primary clutch o fix pulley o movable pulley o spider o cam o follower o primary spring secondary clutch o pulleys.

Modal analysis of the clutch plate by changing circle diameter and applying two types of materials. The optimization was carried out by reducing the number of discs in each clutch and brake and increasing the size of the discs so that there is no compromise in torque capacity. Uniform pressure theory uniform wear theory bearing. Torque converters run at efficiencies anywhere from 095% depending on win, wout, and tin and tout.

Positivecontact clutches characteristics of positivecontact clutches no slip no heat generated cannot be engaged at high speeds sometimes cannot be engaged when both shafts are at rest engagement is accompanied by shock shigleys mechanical engineering design squarejaw clutch fig. However, the present calculations will make it possible to design the dimensions very fast several hours, including the basic concept of the designed solution and including the basic optimization. Using advanced calculation and design methods enable us to create the best design for the application, saving space, reducing weight, and minimizing cost through the use of the proper materials and production technology. The function of clutch is to engage and disengage the. Design and analysis of friction clutch plate using different materials 1 kunchala brahmaiah, 2 o hemalatha 1 pg scholar, department of mech, muffakhamjah college of engineering and technology, road no. For example changing from a forged to a deep drawn lever. Chapter 10 automotive clutches, transmissions, and transaxles. Dog clutch teeth are basically short, fat, cantilevered beams. This clutch is used where high torque to be transfer at low rotating speed. Torques and forces on clutches and brakes for the cone clutch shown, determine the torquetransmitting capacity based on the following parameters. Nov 11, 2019 the diaphragm spring design can be optimized to reduce its weight. Advantages and disadvantages of cone clutch advantages. The engineer can th en proceed with the design of the modules and elements that will transmit and utilize the power.

A gearbox, also known as a gear case or gear head, is a gear or a hydraulic system responsible for transmitting mechanical power from a prime mover an engine or electric motor into some form of useful output. Design and fabrication of gear box full report download gearbox. A concept was developed using a face spline to connect driving and driven members. Special knowledge of noise emission analysis and vibration engineering our laboratory has the capabilities to carry out many different testing possibilities including microscopy, metallography, evaluation of mechanical properties, chemical. Make freehand sketches of various ways the machine might be constructed, at the same time making any preliminary calculations which might be required to. D, department of mech, muffakhamjah college of engineering and technology. Feb 18, 2004 conveniently gathering formulas, analytical methods, and graphs for the design and selection of a wide variety of brakes and clutches in the automotive, aircraft, farming, and manufacturing industries, clutches and brakes. Industrial clutch and brake selection general guidelines. It also suggests design modifications to improve the life time of the clutch plate. So all you really need to worry about is surface contact fatigue and fretting. The performance of brake is similar to that of clutches except the clutches connect one moving part to another moving part, where brake connects a moving part to a frame. The main function of the clutch is to initiate the motion or increase the velocity of the vehicle by transferring kinetic energy from the. Thelow gear is then thrown in, and thefootpedal slowly re leased. In addition, torque can be transmitted with this fit alone, thus making handling simple.

Parametric study of a dog clutch used in a transfer case for. Cone clutch design, advantages and disadvantages mecholic. Dog clutch calculations transmission, driveline, hybrid. Simple handling the oneway clutch series has the clutches press fit tightly into the housing inner diameter, so that there is no need for a fixing device in the axial direction. Process design of compressors project standards and specifications page 2 of 47 rev. A flat clutch is a special case of a conical clutch with an included angle of 180o.

This article gives you all information about this clutch working, application and advantages and disadvantages. Clutches rely on mechanical or electromagnetic action for torque transmission. The clutch is of the single plate type and both sides of the plate are effective. Sep 06, 2017 in this channel all information related to mechanical field i. For example, initial calculations may have indicated that a. The test program has not explored the durability of the clutch for longterm full power engaged running, or for exposure to. Before understanding the operation of a clutch, you must first become familiar with the parts and their functions. Advantages of the disk clutch include the more effective heatdissipation surfaces, the favorable pressure distribution.

The design features, the production features and the calculation of the manufacturing and inspection dimensions for a pair of oerlikon cycloid spiral bevel gears are given in the early part of this chapter. In this paper, we design a multi plate clutch by using empirical formulas. Please start with the tutorial for shaft calculation to see how to introduce geometry and supports for single shafts. Design and selection, second edition simplifies calculations, acquaints engineers with an expansive range of application, and assists in the selection of parameters for. Normally the trucks with four wheel drive option will be running in rear wheel drives and the. A good design would concentrate as much frictional material as possible in. Clutch is one of the essential components in automobiles. Testing also showed that the clutch is capable of longterm overrunning with oil flows down to. This gradually forces the spider into the flywheel,due. Parametric study of a dog clutch used in a transfer case for trucks summary this thesis work consists of an investigation of design changes of a dog clutch. Md16 clutches and brakes university of northern iowa. The pseudorigidbody model prbm, rigidbody replacement synthesis, forcedeflection analysis, compli. Figure 6 consider a rotating shaft with a disc at the end that presses up against another so that rotation is transmitted from one to the other by friction.

Calculation of a two stage gearbox this tutorial shows the usage of mesys shaft calculation with systems of parallel shafts. To calculate the torque capacity of the clutch well have a look at the geometry of the clutch friction disc. Within the area of the friction surface we are going to represent an elementary area dx, at the distance x from the center. Small axial force is required to keep the clutch engaged. A familiar application is the use of a clutch between an engines crankshaft. The purpose of this program was to design, fabricate, and test a positiveengagement clutch consistent with the requirements of the hlh main engine overrunning clutch. Clutches, brakes, coupling, and flywheels clutches, brakes, couplings, and flywheels are a group of elements. The brake design calls for it to be able to stop in 400 feet. Jan 06, 20 an axial clutch is one in which the mating frictional members are moved in a direction parallel to the shaft.

Transmitted power output 10 kw, electric motor speed 1450 min, required output speed 30 min. The clutch is the first drive train component powered by the engine crankshaft. Dear experts, is there a standard available for the design dog clutch teeth and calculating the strength of same. Industrial clutch and brake selection general guidelines 1. The clutch has the same overall dimensions of the metric bearing. To determine the appropriate size of a clutch or brake it is first necessary to determine what operational specifications are required. Mechanical design prn childs, university of sussex aims a clutch is a device that permits the smooth, gradual connection of two shafts rotating at different speeds. For the love of physics walter lewin may 16, 2011 duration. A forked lever is used to disengagement of the clutch. For example, when a car is stopped at a traffic light, the engine still applies power to the input shaft, but the brakes and transmission prevent the output shaft from rotating. The kk clutch consists of a standard metric ball bearing combined with cams. Along with this we have introduced a compliant clutch.