clockwork spring in china

clockwork spring

In the clockwork spring inside the box spring, when the wind is in a state of freedom, the moment is zero, after the clockwork spring into the box spring completely relaxed, at this time spring circle pressure to the walls of the box where in this state, although has certain stress in spring material, but due to the limitation of the box, could not continue to let go, to make, and therefore the actual torque is equal to zero.Due to tightening up the clockwork gradually relaxed, the pressure to the box of the lining of each circle on the coil spring will leave the lining and gradually separated from each other and live in a box, the equivalent of a clockwork each circle is distributed in a box inside, but the outer circle has left the box wall moment, at this time, the clockwork spring all the circles in a concentric state, continue to tightening up the outside a circle and left box spring, each circle or concentric clockwork spring, or become different from each other heart, this is mainly depends on outside the clockwork spring fixed method, every circle of the clockwork spring heart distribution, friction between lap will make it happen.This article clockwork spring will be tight around the shaft.

In order to accurately and conveniently calculate the clockwork spring torque, over the years, many foreign scholars have made a lot of research work, and puts forward some clockwork spring torque calculation method, the following is a recommended by the engineering calculation method, this method is simple, universal, not only applies to the clock and watch industry s-shaped clockwork spring and also apply to a spiral spring spring

Due to the design with clockwork spring box, often need to determine the number of geometry size than the known number relation, therefore, often need to be selected in the design of some size and parameters, usually under the condition of meet the requirements of torque, according to the mechanism of axial size as far as possible choose larger clockwork spring width, and reducing the thickness of the clockwork spring, in this way, on the one hand be narrowed radial size, don't on the one hand, clockwork spring torque changes also smaller.

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