For accurate and consistent results, systems may therefore require appropriate fixtures that are inflexible, self-levelling, rotate freely, or allow frictionless containment. An exercised spring moves in small complex ways that affect measurement, from the non-linear measurement of a bottoming-out conical spring, to the slight twist or tilt in a helical spring, or the behaviour of an extension spring end loop under tension, and the friction in holding or supporting a light torsion spring as it is worked under test. Spring rate, load at displacement, or displacement at load are important measurements, but not the whole story for spring designers and manufacturers the whole profile of force and movement needs to be recorded. These settings are determined with the required fixtures in place to ensure maximum accuracy. At the other extreme, the stiffer the spring, the more rigid a tester must be, so Mecmesin machines incorporate System Deflection Compensation (SDC) in their software. Light springs require very accurate measurement of small forces, with precision movements. The basic principles remain the same, whether for a watch spring or an aircraft undercarriage spring, but the demands on test equipment are very different. Only rigorous testing can ensure this quality, but since springs are so complex and varied, so are the means of testing. Comes with a fixed plate diameter 50mm, a self-levelling plate and its certificate of calibration linked to COFRAC.If a spring is consistently to do the job it was designed for, it must, within acceptable tolerances, exert the required force over its range of use, and over extended time in use. Write then the value of the force or transfer this value to your computer. Simply place the spring on the Springtest 1, then turn the handle to go down with the force gauge to have the desired height. Then press zero on the displacement sensor. Once this force is reached, lock the self levelling plate by tightening the screws. To ensure even greater accuracy and compensate for distortions in the system, it is recommended to apply a force between two plates equivalent to the force measured on your springs. To do this, loosen of the self-levelling plate and go down with the compression plate to bring together the two plates. Hooks can be supplied as an option for tensile springs.ĭuring the first use and periodically, it is necessary to adjust the parallelism between the compression plate and the self levelling plate. The self levelling support ensures the parallelism with the compression plates during testing to avoid measurement error. The displacement transducer with digital display has a resolution of 0.001 in to ensure a repeatable and accurate compression The force gauge features one of the highest accuracy on the market: 0.1% of full scale with a sampling rate of 1,000 Hz The drive screw allows very precise positioning with a stroke of 2 mm per revolution The manual test stand does not deform when the load increase due to the double steel guide and a drive screw without clearance The quality and repeatability of the results are ensured through a specific design made by Com-Ten Industries: It can also be used to control incoming goods in quality, production or laboratory. The system Springtest 1 is very easy to use and it is designed to perform your measurements quickly. The bottom self levelling plate guarantees the paralellism of the plates. The measuring head (internal load cell with strain gauges) indicates the force applied, the ruler displays the deflection or the height under load. It inludes a very accurate force gauge, a manual test stand, a digital ruler and a special compression plate for springs. The Springtest 1 is a very simple and economical system to control compression springs of small capacity.
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