New Product Info
ABSSAC Machined Springs(Jan 11,2012)
The maachined spring product available from ABSSAC Limited is a formidable package. For those engineers familiar with the traditional wound spring format we are offering a new way of looking at both performance and attachment.
Whilst we all agree that traditional wire wound springs have numerous bonifide applications, the very nature of how they are manufactured can limit their reliability and performance in the more demanding or high duty cycle spring applications. Machined springs, as many of our existing customers have found, are more useful than you may first think!
The designs are limited only by your imagination.
As with its wire wound brother, all types of spring format such as, compression, extension, torsion, lateral translation and lateral bending springs are available in the machined format. However, from this point the similarities between wound and machined springs stop. Machined springs can provide very precise, linear deflection rates because virtually all-residual stresses are eliminated. As a result, there are no internal stresses to overcome before deflection occurs, which can be the case in the wire wound spring. In addition to this we can offer multiple start spring coil configurations.
The most common configuration is the single start spring, which consists of a single continous coil element, which starts at one end and terminates at the other end, much like its wire wound counterpart. However, we can uniquely offer a double start or indeed triple start spring which has two or three interwined continuous coil elements. In effect, this puts multiple independent helixes in the same cylindrical plane, which provides a totally enhanced spring performance.
Repeatability-Reliability.
With the machined spring, perpendicularity, parallelism, lateral bending, axial and torsional rates can be guaranteed.
Precision Elasticity.
The advantages of Multiple start spring elements are beneficial because they not only provide redundant elastic elements should a failure occur, but a failed element (coil) will be physically trapped by the remaining one and in many cases will allow the albeit reduced function of the spring design to still operate. Another multi-start benefit applies to compression and tension springs, as when compressed (or extended), single start springs provide a reaction force plus a moment. On multiple start flexures, all internal moments are resolved within the spring itself, which translates into excellent compression or extension parallelism. There is no tendency for the spring to squirm when deflected, and no restraint is necessary to resolve the free moment. Double and triple start variants make the loading points irrlevant on the radius of the spring but increase the accuracy of parallelism.
Integration of multi parts.
Once the working dynamics of the spring are calculated and agreed we can then look at the method of attachment. In many cases the machined spring incorporates other parts of the working mechanism into the single part, such as flanges, gears, splines etc., making the final item more reliable.
The maachined spring product available from ABSSAC Limited is a formidable package. For those engineers familiar with the traditional wound spring format we are offering a new way of looking at both performance and attachment.
Whilst we all agree that traditional wire wound springs have numerous bonifide applications, the very nature of how they are manufactured can limit their reliability and performance in the more demanding or high duty cycle spring applications. Machined springs, as many of our existing customers have found, are more useful than you may first think!
The designs are limited only by your imagination.
As with its wire wound brother, all types of spring format such as, compression, extension, torsion, lateral translation and lateral bending springs are available in the machined format. However, from this point the similarities between wound and machined springs stop. Machined springs can provide very precise, linear deflection rates because virtually all-residual stresses are eliminated. As a result, there are no internal stresses to overcome before deflection occurs, which can be the case in the wire wound spring. In addition to this we can offer multiple start spring coil configurations.
The most common configuration is the single start spring, which consists of a single continous coil element, which starts at one end and terminates at the other end, much like its wire wound counterpart. However, we can uniquely offer a double start or indeed triple start spring which has two or three interwined continuous coil elements. In effect, this puts multiple independent helixes in the same cylindrical plane, which provides a totally enhanced spring performance.
Repeatability-Reliability.
With the machined spring, perpendicularity, parallelism, lateral bending, axial and torsional rates can be guaranteed.
Precision Elasticity.
The advantages of Multiple start spring elements are beneficial because they not only provide redundant elastic elements should a failure occur, but a failed element (coil) will be physically trapped by the remaining one and in many cases will allow the albeit reduced function of the spring design to still operate. Another multi-start benefit applies to compression and tension springs, as when compressed (or extended), single start springs provide a reaction force plus a moment. On multiple start flexures, all internal moments are resolved within the spring itself, which translates into excellent compression or extension parallelism. There is no tendency for the spring to squirm when deflected, and no restraint is necessary to resolve the free moment. Double and triple start variants make the loading points irrlevant on the radius of the spring but increase the accuracy of parallelism.
Integration of multi parts.
Once the working dynamics of the spring are calculated and agreed we can then look at the method of attachment. In many cases the machined spring incorporates other parts of the working mechanism into the single part, such as flanges, gears, splines etc., making the final item more reliable.
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