Springs can be found everywhere in our lives, but most people may not have heard of disc springs. Disc springs are not our common general shape of the spring, as we can imagine, since it is a spring, accompanied by its characteristics belong to it - compression. The amount of compression between each type of spring is different, so the butterfly spring compression in the end how much? Below I will introduce you to the characteristics of the butterfly spring? and how to calculate its unique compression amount.
First of all, I would like to introduce you to the function of the disc spring:
The shape of the disc spring is a conical disc, which is different from the traditional spring, and the function of the spring has its own special role, the main features are, large load, short stroke, the space required is small, the combination of the use of easy, easy to maintain the change of installation, and high economic security. Applicable to small space, large load of precision heavy machinery. The best use of its compression stroke in its maximum compression stroke between 10% -75%.
Disc spring characteristics:
Short stroke, large load. Small space required. Easy to combine and use. Maintenance is easy to change. Economy, high security.
Compared with cylindrical coil springs, disc springs have the following characteristics:
1, the load deflection characteristic curve is non-linear relationship.
2, disc springs into a thin sheet shape, easy to form a combination of parts, can be implemented building block assembly and replacement, thus bringing convenience to the maintenance.
3, with radial groove disc spring has zero stiffness characteristics. This characteristic can be used in a range of deformation requires the spring force is basically stable field
Combined.
4, disc spring vibration absorption performance is not lower than the cylindrical coil spring, when the use of stacked combinations due to the friction between the disc spring sheet has a greater damping, dissipation of impact energy.
Next I tell you about the calculation of compression of disc springs:
Spring compression and calculation? In a set of stamping molds, need to use more elastic materials, including a variety of different specifications of the spring, Ulex, ? Nitrogen springs, etc., in accordance with the different needs of different elastic materials. Like bending, punching generally use ordinary flat wire spring on? Can be, such as brown spring, also known as coffee-colored spring; if the power is not enough to add nitrogen spring, of course, the cost is a little higher; UCL is generally used for deep-drawing molds, plastic molds, or the entire flatness with. The deep drawing molds are very good with Urethane, of course, you can also choose the nitrogen spring.
Other things like top pins, floating blocks, dual-purpose pins, etc.? Generally use wire spring or yellow spring, as long as you can get rid of the material, not the top of the product out of the print, top deformation is good. The characteristic of the Ulex rubber? Is the power is more balanced, however, its life expectancy is relatively short, the production of a period of time may be cracked off, not work, atrophy, so it is generally less commonly used, usually more commonly used nitrogen springs. The whole flatness of the UCL is used more. Springs, including flat wire springs, wire springs, etc., the purpose of the spring is to take off the material, pressure material, spring strength is small, the relationship between the mold production? Whether the production is smooth, whether the product is qualified. Spring force is small, may cause product deformation, mold not off? Material, the product is not good from the mold inside take out, with material, knife, punch easy to wear and so on various problems.
Flat wire springs are generally divided by color: brown, green, red, blue, yellow, the power also decreases in order, the color is different,? The amount of force is different, and the amount of compression is also different. There is an earth method to calculate the amount of compression of the spring, that is, I just entered the factory to learn the mold not long ago, the mold is still not very knowledgeable, my master taught me: measure the total height of the spring beforehand, and then put the spring in a vise, lock, and then use calipers to measure the length of the spring is clamped to death after the length of the rest, and then subtract the total length of the spring to this number, and then divided by the total length can be, this method of any spring universal, such as brown! The length of the spring is 60mm, after being clamped in a vise, there should be about 45.6 left, then you use 60? minus 45.6 equals 14.4, then divide 14.4 by 60, the result is equal to 0.24, which is its compression.
Spring according to different production times, such as 1 million times, 500,000 times, 300,000 times, the greater the compression selected, the shorter the spring life, ? Mold life is also shorter (of course, the spring is broken can be replaced), the mold production for a period of time may not spring force,? The poor quality of the spring may also be broken in the mold. Generally according to 300,000 times to calculate the spring compression, that is to say? Die playing 300,000 times the spring may be no force, of course, the general life of the stamping die are not so long, can also be calculated according to the maximum compression, calculated according to the maximum compression, only to ensure that the spring does not burst in the mold.
The mold presses a little dead, ? The product flatness is also good. The specific compression amount is as follows table:? Color Color?100 times?500,000 times?300,000 times? Maximum compression brown spring? 16%? 18%? 20%? 24%? Green spring?19.20%?21.60%?24%?28%? Red spring?25.60%?28.80%?32%?38%? Blue spring?32%?36%?40%?48% Yellow spring?40%?45%?50%?58%? Maximum compression (how much this spring can be pressed down), the maximum compression of the spring is equal to the free height of the spring multiplied by the maximum compression ratio of the spring, for example, the brown spring, the length of 60mm, then its maximum compression is:60*24% is about 14, this spring can be pressed down to a maximum of 14 millimeters, it is the maximum stroke is 14 millimeters, the stroke of the die must be less than 14 millimeters, and the spring may be pressed down more than 14 millimeters, and the spring may be pressed down more than 14 millimeters. More than 14 millimeters, the spring may fail, deformation, and may be interrupted in the mold, or the mold burst, the press can not be pressed down, and so on. Before the mold is set up, that is, before the mold is loaded, the compression of the spring must be calculated to see if it is appropriate, so that the mold will not have to worry about the mold will be out of the problem, burst, etc. during the mold test.
How much compression is there in a disc spring? After reading these words above, I think we should be clear that the compression of the disc spring is not fixed, each spring will have its own compression. We should know how to calculate the amount of compression and the factors affecting it, and through these to really calculate and measure the amount of compression of disc springs in the end. I hope that through these words can help you understand more about disc springs, so as not to bring inconvenience to your life.
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