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Raw material-saving one-dimensional stock-cutting method

A technology of raw materials, waste materials, used in the field of computer applications

Inactive Publication Date: 2014-03-26
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0027] The purpose of the present invention is to solve the problems existing in the existing method for one-dimensional blanking. In order to make full use of raw materials in the production process, the enterprise can maximize the consumption of raw materials in the production process and reduce production costs. Propose a one-dimensional blanking method to save raw materials

Method used

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Embodiment

[0110] input: l 1 = 10m, l 2 =8.3m, l3 =7.1m, l 4 = 6.8m. no 1 =212,n 2 =32,n 3 =16,n 4 =8. a j =1. l j have the same priority. D=4,m 1 =m 2 =m 3 =m 4 =32,L 1 =20.6122m,L 2 =20.4177m,L 3 =20.2233m, L 4 = 18.2785m. max I i =3.

[0111] Unsplicable interval:

[0112]

[0113] R 1 = 0.2, R 2 = 0.5.

[0114] Output: I 1 =I 2 =I 4 = 1, I 3 = 2, the splicing result is as follows figure 2 shown.

[0115] Results The total length of the material was 2545.0144m, the length of the remaining material was 6.2916m, and the total length of the raw material was 2553.6m.

[0116] Clipping rate ρ = 2551.306 2553.6 = 99.91 % , The number of interfaces is 224.

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Abstract

The invention relates to a raw material-saving one-dimensional stock-cutting method. The method can work out the optimum solution of one-dimensional stock-cutting problems in an environment with uncertain constraint conditions so as to improve the utilization ratio of raw materials to the utmost extent, and reduce the production of waste materials. The method comprises the following steps: firstly, splicing an uncut raw material into m result pipes with the length of L, wherein the length of the rest part of the result pipes is shorter than the that of the raw material; secondly, cutting the raw material by adopting the optimum cutting method, and splicing the rest part of the result pipes by using the cut raw material; and finally, checking whether the constraint condition 1 is satisfied, if the constraint condition 1 is not satisfied, performing appropriate readjustments. By adopting an idea of nonnumeric calculation, the raw material-saving one-dimensional stock-cutting method can be used for solving the one-dimensional stock-cutting problems under the condition with a plurality of constraint conditions comprising the uncertain constraint conditions, the optimum cutting and splicing method is selected through skillful comparisons, and the optimum solution is worked out, so the maximum utilization of the raw material is realized.

Description

technical field [0001] The invention belongs to the technical field of computer application and relates to an analysis method for fully utilizing raw materials in the production process. Background technique [0002] With the increasing scarcity of global resources, people pay more and more attention to the research of resource utilization. Maximizing the saving of raw materials and improving the utilization of raw materials has become an important means of improving efficiency in industrial production, and the cutting stock problem (Cutting Stock Problem, CSP) is one of them. [0003] The blanking problem is aimed at the utilization of a certain resource, and studies how to obtain the optimal solution or approximate theoretical optimal solution by optimizing layout under the condition of satisfying objective conditions and acceptable time, so as to maximize the use of the resource. By finding an optimal blanking plan, the consumption of raw materials can be saved, the prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06Q1/00G06Q10/06
Inventor 周培德付梦印王美玲黄源水
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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