In the selection lists set the permissible deviation from the required working stroke of the spring 6. Design belleville springs inventor autodesk knowledge network. Jul 21, 2009 belleville disc spring stack design calculator this calculator aids in designing preferred stack arrangements for your design. Belleville disc springs share many of the same characteristics as a general washer. These washers have had all set removed during the manufacturing process.
When spring rate varies with deflection, it is called a nonlinear springnonlinear spring. A belleville washer is a type of spring shaped like a washer. Developments such as the internal combustion engine, turbine and jet systems, nuclear power, oil and gas. Spring design pdf custom spring download spring engineers. Alternatively, two washers stacked in series will yield double the deflection of single. Two washers stacked in parallel will yield double the load of a single washer for the same deflection. Flat load for sds springs refer to din specification for tolerances. Iis manufactures belleville washer in imperial as well as metric sizes. The story of the disc spring although the disc spring has found a wider application during the last few decades, it is still an old established machine component.
The slight or aggressive conical shape gives the washer a spring characteristic and action. At belleflex technologies, we provide 247 support to keep your operation running smoothly. A belleville spring is a conical shaped disc that will deflect flatten at a given rate. Belleville spring washer equation and calculator engineers edge. The excel workbook can be used to calculate the loaddeflection curves of any belleville spring. Disc spring sftaf, din 2093 spring force ff sh o deflection sh characteristic for one spring at dynamic load, cup height should only be used for 0.
If space is extremely limited and the load is high, belleville washer springs can be considered. Belleville credited as the inventor of the belleville spring. Using the above information, select the configuration of disc springs that is. This is particularly true for small arms applications where spring space is limited and where the impact type loading is inherent in weapon function. Belleville washers are typically used as springs where the spring action is used to apply a preload or flexible quality to a bolted joint. The fatigue life of a disc spring is directly related to the magnitude of stresses developed in the part as it cycles. I set up a spreadsheet using the belleville spring equations from roarks, and some similar equations from the sae spring handbook. If slope is constant, it is a linear spring, and y f k where. For actual tolerances for a specific part, contact us.
Disc springs are conical washers with elastic properties. Key bellevilles offers free proprietary belleville calculator design software to help our customers in the belleville design process. Design and finite element analysis of h tool steel. It is the frusto conical shape that gives the washer its characteristic spring. Belleville spring technical notes disc spring tech notes. This spring disc was subsequently termed a belleville washer after the name of its originator. Belleville washers provide a very high spring force for short movement and have a high energy storage capacity. Belleville washers are a unique type of compression spring. Learn about spring types, their application and our fullservice custom spring design services. This calculator aids in designing preferred stack arrangements for your design. Material spring steel commercial 1074 certified to astma684. Our stock range includes disc springs to din 2093 and din 6796 specifications, bearing preload disc springs, medium and light duty serrated safety.
Designed as per americal standar in imperial units. Century spring custom disc spring manufacturing mw industries maryland precision spring location is a leader in custom, precision disc springs and belleville washers, having designed and manufactured thousands of custom disc springs for a range of unique applications. Special cases of ht the shape of the loaddeflection diagram for a belleville. So, a 2312 stack or, since addition is commutative, a 3221 stack gives a spring constant of 37 that of a single washer. Disc springs are used singly, or in stacks, to achieve a desired load and travel.
These springs provide high load capabilities in limited space, and through variations in stacking they can be adjusted to provide either larger deflections or. In particular, numerical simulations have been carried out for a preliminary design of the belleville washer, using a commercial finite element software and a. With 90 years of innovation, hk metalcraft brings precision engineering and performance manufacturing to every washer, gasket, and custom stamped metal part we. Some of the important design considerations in spring work are outlined here. Disc spring catalog belleville washer catalog mubea disc. Designing of belleville spring washer the design of. The midnineteenth century saw the conception of a conical shaped spring disc. The total spring coefficient for this group of belleville washers is calculated as below. A belleville spring is a conical shaped disc that will deflect flatten at a given spring rat e when subjected to an axial load fp figure 1. Belleville washer, belleville washers, manufacturers, suppliers. Din 2093 disc springs tolerances belleville springs. Disc springs are conicallyshaped, washertype components designed to be. Browse by imperial or metric units for your convenience. If you have additional questions or require assistance, please contact.
Select the appropriate standard and type of spring. For those familiar with excel, we offer a fullyautomated workbook that includes our catalog. This spring design principle corresponds to the disc spring in use today. These springs are illustrated below, leaf springs, which are illustrated below in a typical wheeledvehicle application, can be designed to have progressive spring rates. Belleville spring, disc spring, and conical compression washer are all names for the same type of spring. Although the disc spring has found a wider application during the last few decades, it is still an old established machine component.
Belleville springs has been trading in the spring industry for over 40 years and is a leading uk manufacturer and stockist of disc springs and belleville washers who export their products worldwide. It is important when designing springs to adhere to proper procedures and design considerations. A belleville spring or washer is formed into a conical or cone shaped geometry. The original inventor is not known, but more than years ago on 26. This paragraph serves for automatic design finding of a belleville spring of satisfactory dimensions. The tool presents both an optimal design using a belleville spring taken from a catalogue and an optimal custom design. Bellevilles are conical in shape and are designed to be loaded in the axial direction. They are also referred to belleville washers or spring washers. This rate is usually very high relative to a coil spring, which makes a belleville an excellent candidate where large loads must be delivered through a short movement. Either a single spring or a stack of springs can be used. We produce belleville disc springs, compliant to din. The calculation of the force of a disc spring is based. Belleville disc springs gardner spring tulsa oklahoma.
The diagram shows how the spring characteristic is influenced by the ratio between cup height and material thickness hot. The belleville spring, created in the mid 19th century, is named after julian f. Excel belleville spring calculatorradigan engineering. Select the spring size from the use the singledisk spring dimensions pulldown list. Disc springs have become indispensable in a host of applications. On the placement area, click axis and start reference to place the spring. In the design of belleville washers, one of the main considerations is that of keeping the final stress at a safe and reasonable level. Handbook for disc springs industrial and bearing supplies. Belleville washer, belleville washers, din 6796, manufacturers, suppliers, belleville washer catalog, belleville washer calculator, belleville washer design guide, belleville washer dimensions, belleville washer installation, disc spring washer, belleville washer specifications, belleville spring design, belleville washers theory, din 6796 pdf, din 6796 specification, din 6796 standard, din. Pdf optimal catalogue selection and custom design of. Search lee springs inventory of belleville washers by part number or by specifications.
There are two belleville calculator programs currently available to key bellevilles customers. Belleville washers disk springs considerations prior to the spring design process. The main characteristic of these elements is the capacity for offering very high forces in reduced spaces, improving what we would obtain with another type of springs. Disc spring calculator tool please follow the instructions below for using mubea disc springs calculator tool. We have computerized design program to assist our customers or their spec. Belleville washers engineering data belleville washer stacking example. An illustrative example is presented to highlight the benefits of using such. Iis belleville washers are designed specifically for heavy duty bolted section such as bus bars, transformers, rectifiers, heat exchangers, transmission etc.
Belleville spring washers are especially suited for applications requiring high loads in small spaces. Tolerances of disc springs to din 2093 manufactured by belleville springs. A disc spring sometimes called a belleville washer after the inventor consists primarily of a convex disc supported at the outer periphery by one force and an opposing force on the center of the disc. Disc spring catalog belleville washer catalog mubea. Belleville disc washer springs learn about lee spring. Solon manufactures a wide variety of springs and washer sizes that meet different tolerance requirements. Full list of tolerances for stock din 2093 disc springs. The advantage of a disc spring is that it generates high force in a very short spring length and with. Spring engineers experience and history guarantees professional commitment to all of our customers. Spring rate every spring configuration has a spring rate, k,defined as slope of its forcedeflection curve. Performance considerations a similar device is a wave washer. Metal stampings belleville spring washers hk metalcraft. By stacking them in parallel, load bearing characteristics are enhanced. The belleville name comes from the inventor julien belleville who in dunkerque, france, in 1867 patented a spring design which.
Nov 12, 20 the excel workbook can be used to calculate the loaddeflection curves of any belleville spring. Belleville washer, belleville washers, manufacturers. Large online inventory with specifically sized prestressed disc springs available. A spring stack can consists ot either s ngle spnngs or spring sets, disc springs are availate with or without contact flats. Design belleville springs inventor autodesk knowledge. Search lee spring s inventory of belleville washers by part number or by specifications. For loaddeflection tolerance information for other parts, please contact.
This spring disc was subsequently termed a belleville washer after the. Insert standalone spring on the ribbon, click design tab spring panel belleville. This spring rate is usually very high, allowing the spring to produce very large loads in a very small space. Disc springs are often stacked to enhance performance characteristics. Disc spring, belleville washer disc springs, belleville.
Information about this ratio can be found in the dimension. Crown height actually should not exceed 40% of material thickness. Precision disc spring catalog pdf mw industries, inc. Start by entering your desired spring measurements in the yellowhighlighted boxes and then select one of the material options from the dropdown menu in d12. It is the frustoconical shape that gives the washer its characteristic spring. When stacked in series, greater deflection or travel is achieved. Nov 09, 2011 belleville disc springs are critical components. Belleville disc springs conical disc springs are ideal for applications where a large load is required in a small space. Designed to maintain a high load at the bolt joints stacks. A single belleville washer has a specific load for a given deflection. In a belleville washer, the ratio of material thickness to rim width is held to about one in five. The belleville name comes from the inventor julien belleville who in dunkerque, france, in 1867 patented a spring design which already contained the principle of the disc spring. Determine the fully loaded condition of the disc spring.
On the dimensions group box, select the spring from the spring type pulldown list. When referring to bellville disc spring design, certain. The excel workbook is unprotected so its easy to add, edit, or tweak the material. By combining them in varying sequences, each size gives numerous loadcarrying possibilities. Foreword the midnineteenth century saw the conception of a conical shaped spring disc. This may be specified by a length of travel or an additional load that will be exerted on the disc spring.
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