Reference Articles 1 - 30 of 30
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SPRING PERFORMANCE - Processing Effects on Residual Stress
From: MW IndustriesDescription: The goal of this paper is to address three key questions. First, what are residual stresses? Second, what causes them? And third, are they good or bad in terms of performance of springs? ...
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Creating More Force with a Constant Force Spring
From: Vulcan Spring & Mfg. Co.Description: A common practice for mounting Constant Force Springs is to utilize two or more springs to gain more force in a small space. This might be required if the diameter or width of a single spring exceeds ...
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Power Springs and Pre-Stressed Power Springs (Conpower®)
From: Vulcan Spring & Mfg. Co.Description: Power Springs are formed by winding strip material on an arbor and into a case or retaining ring. Power springs store and release torque through a central arbor or through the case that it is ...
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Glossary of Spring Manufacturing Terms
From: MW IndustriesDescription: In addition to the definitions below (for a plain text version, click here), also see the "Frequently Asked Questions" for questions relating to spring design and manufacturing. Active coils Those ...
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MW Industries Frequently Asked Questions
From: MW IndustriesDescription: This FAQ covers a wide range of questions relating to spring design and manufacturing. ...
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How to Design Your Own Springs
Description: In depth details, nomenclature and information on the load deflection formula developed by J. Almen and A. Laszlo and published in the Transactions of the American Society of Engineers May 1936 ...
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Spring Design Analysis Program - Download Excel
Description: Contact Rolex Company for achievable manufacturing tolerances for piece part and/or stack load tolerance requirements and especially for availability of materials needed to meet specific design ...
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Analysis of Volatile Organic Compounds in Soil Samples by EPA Method 8260 with The Stratum PTC and Solatek 72 Multimatrix Autosampler (.pdf)
From: Teledyne InstrumentsDescription: Purge and Trap concentration (P&T) along with Gas Chromatographic (GC) analysis is a widely used method for the analysis of Volatile Organic Compounds (VOCs). This methodology was developed to achieve ...
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Active Coils in a Spring
From: Newcomb Spring Corp.Description: The active coils are what make a spring a spring. We normally refer to the coils that open in an extension spring, the coils that deflect or close in a compression spring and the coils that twist or ...
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Compression Spring Solid Height
From: Newcomb Spring Corp.Description: The Solid Height of a compression spring is the height of the spring when all of the coils are brought together (stacked) by compression (load). Solid Height should only be specified when it is ...
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How Spring Design Affects Cost
From: Newcomb Spring Corp.Description: Often spring designs are more expensive and difficult to manufacture due to lack of space. Each type of spring presents its own challenges, however, adequate space for coils and spring diameters can ...
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Modulus of Elasticity
From: Newcomb Spring Corp.Description: Modulus of Elasticity is the measurement of stiffness and rigidity of spring material, or its elastic ability. The higher the value (modulus), the stiffer the material. Conversely, materials with ...
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Permanent Set
From: Newcomb Spring Corp.Description: Simply put, permanent set in a compression spring is a condition where the spring is deflected (compressed) and does not return to its original free length. This occurs when the material is deflected ...
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Spring Index
From: Newcomb Spring Corp.Description: The spring index is the relationship between the mean diameter and wire diameter. The equation is explained in this article. This is a very important relationship to consider for manufacturing ease ...
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Spring Rate - What Is It & How Do I Determine Spring Rate?
From: Newcomb Spring Corp.Description: Spring rate is the change in load per unit of deflection - this article explains spring rate and provides instructions about how to determine rate. ...
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Spring Tolerances vs. Block Tolerances
From: Newcomb Spring Corp.Description: One of the least understood facets of spring design is specifying the proper tolerance to various dimensions of the spring. Sometimes the person engineering and/or drafting a new spring will disregard ...
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Squareness of Compression Springs
From: Newcomb Spring Corp.Description: Squareness of a compression spring refers to the perpendicularity of the spring to its own axis. A spring that is "square" will exert more uniform loads, which may be needed in critical applications. ...
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Types of Ends on Helical Compression Springs
From: Newcomb Spring Corp.Description: There are basically four (4) types of ends on Helical Compression Springs: closed & ground, closed & not ground ends, open & ground ends and open & not ground ends. This article describes the types of ...
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Active Coils in a Spring
From: Newcomb Spring Corp.Description: The active coils are what make a spring a spring. We normally refer to the coils that open in an extension spring, the coils that deflect or close in a compression spring and the coils that twist or ...
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Determining Right Hand or Left Hand Spring Wind Direction
From: Newcomb Spring Corp.Description: The direction of wind of a spring can be determined by simply holding it in your hand with your fingers placed around the outside of the body and your thumb pointing straight up. If the last coil ends ...
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How to Measure a Spring's Initial Tension
From: Newcomb Spring Corp.Description: Measuring the amount of initial tension in an extension spring can be tricky and an often misunderstood process for those unfamiliar with spring manufacturing. Sometimes incoming inspectors will ...
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How to Measure a Spring's Initial Tension
From: Newcomb Spring Corp.Description: Measuring the amount of initial tension in an extension spring can be tricky and an often misunderstood process for those unfamiliar with spring manufacturing. Sometimes incoming inspectors will ...
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Initial Tension - What Is It?
From: Newcomb Spring Corp.Description: One of the least understood elements of spring design is initial tension in extension springs. So often designers will guess at the amount of force necessary to overcome this one time load, or they ...
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Leaf Spring Force and Pressure Measurement
From: Tekscan, Inc.Description: The I-Scan® pressure measurement system is an extremely verstaile tool for leaf spring applications. Because of the sensor's unique, thin design (> 0.1mm thick), measurements can be made quickly ...
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Measuring Initial Spring Rate and Initial Tension
From: Lee Spring CompanyDescription: Extension springs are springs which absorb and store energy by offering resistance to a pulling force. Various types of ends are used to attach the extension spring to the source of the force. ...
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Overview of Compression and Extension Spring Tolerances
From: Lee Spring CompanyDescription: Spring manufacturing, as any other production process, is not exact. It can be expected to produce variations in such spring characteristics as load, mean coil diameter, free length, and relationship ...
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Soft Light Pressure Compression Springs
From: Lee Spring CompanyDescription: The Lee Spring catalog has always offered springs with relatively low spring rates or workable (maximum) loads. But often, the offered diameters (outside or inside) were too small to accommodate the ...
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Twin Plant News Bazz Houston Revisited
From: Bazz Houston CompanyDescription: The past decade or so has seen an ever increasing number of large organizations shift manufacturing operations to lower cost countries. The scale of this movement has not abated. Few small companies, ...
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Understanding Compression Spring Ends
From: Lee Spring CompanyDescription: Extension Spring Ends ...
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Air Spring: Rate of Force Rise - Air Spring Characteristic
From: Airpot CorporationDescription: Damping direction and starting position of the piston combine to affect the rate of force rise. In an air dashpot, at the beginning of the stroke, the piston will quickly travel a finite distance with ...
