The length of wire and cable reels is generally calculated based on the following factors:
Regarding the length calculation of wire and cable winding on online reels, there has never been a very fixed calculation method in the cable industry. Below, I will share some of my insights.
2021-11-09
For wiresCable reelThe calculation of the length of wire wound on the reel has never had a very fixed method in the cable industry. Below, I will share some of my insights.
Common calculation methods include:
1: Volume calculation method.
2: Integral calculation method.
3: Layered calculation method.
... ... etc.
These methods are not absolutely accurate or inaccurate; there will always be some deviation in the actual winding process. The main reasons for deviation include: 1: The outer diameter of the cable is not a perfect circle, 2: The tightness of the cable arrangement, 3: Possible skipping during the arrangement process, 4: Uneven gaps when the cable reaches the side plate end, etc. ... ...
Since each theoretical calculation method may differ from the actual winding length, I choose a theoretical calculation method and combine it with data obtained from past practices to minimize this error value as much as possible.
Among the above calculation methods, I choose a relatively simple one: the volume calculation method.
Volume calculation method. Its theoretical basis is: Length of cable wound = Usable volume of the reel / Cross-sectional area of the cable * Empirical coefficient.
①: Usable volume of the reel = 3.14*(D1/2)²*L3 - 3.14*(D2/2)²*L3
②: Cross-sectional area of the cable = 3.14*(cable diameter/2)². "You can also refer to the cable model and cross-sectional area comparison table."
③: Empirical coefficient, which relates to the gaps between cables and the need to leave space between the cable and the outer edge of the reel after winding, etc. Therefore, this is an empirical value. I generally take a range of 0.7-0.80, so the middle value coefficient is 0.75.
So: The formula calculation is as follows:
Length of cable wound = ①/②*③
The above is some insight regarding wires.Cable reelI hope it can provide some ideas for everyone.
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