Method and device for automatically calculating low level codes

Abstract

The invention relates to a method and a device for automatically calculating low level codes. The method comprises the following steps of: establishing a temporary bill of material (BOM) table structure; hanging the substituted materials for the raw materials in the BOM on the same order of the raw materials in the temporary BOM table structure in parallel; calculating and storing the low level codes of all the materials in the temporary BOM table structure; and updating the low level codes of all the materials with a substitutional relation in the same group into the maximum low level codes in the group. By the invention, the special problem is converted into the standard problem, and the corresponding low level codes are achieved according to the low level code calculation method of the standard problem, so the calculation process of the low level codes is simplified, material requirement planning (MRP) can calculate supply and demand balance between the raw materials and the substituted materials conveniently according to the low level code priority, purchase or production quantity can be suggested by calculating the materials, and accuracy of an MRP calculation result is improved.

Description

technical field [0001] The invention relates to the field of material management in a manufacturing system, in particular to a low-bit code automatic calculation method and device. Background technique [0002] The term "material" has a broad meaning, and it is a general term for all products, semi-finished products, work in progress, raw materials, blanks, accessories and other materials related to production. The bill of material (Bill of Material, BOM) refers to the list of parts and components required for the product and its structure. Specifically, a bill of material is a list of all subassemblies, parts, and raw materials that make up a parent assembly, as well as the quantities of each component required to manufacture an assembly. The bill of materials indicates the structural relationship between product → component → component → part → raw material, as well as the quantity and lead time (Lead Time) of the subordinate components (or parts) contained in each assemb...

AI Technical Summary

Problems solved by technology

In the prior art, when MRP calculates the supply and demand balance of raw materials and substitute materials, the calculation method for calculating the low-order code of the substitute material is relatively complicated. At the same time, because the substitute material may not be in the BOM structure, the calculation of the low-order code of the substitute material is inaccurate. As a result, the calculation result of MRP is inaccurate.

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