Multi-objective optimization method for casting production line

Abstract

The invention discloses a multi-objective optimization method for a casting production line. The multi-objective optimization method comprises the following steps of acquiring production parameters ina current machining batch of the casting production line, the production parameters comprising the number of operation machines used for machining, the types of workpieces to be machined, the machining procedures corresponding to the workpieces to be machined and the number of the workpieces to be machined, taking relaxation time coefficient values in one-to-one correspondence with the proceduresto be machined as optimization variables to establish a target function, obtaining at least one set composed of relaxation time coefficient values according to a multi-objective chaotic optimizationalgorithm, only one relaxation time coefficient value corresponding to the same procedure to be machined existing in the set, and obtaining an optimal solution set according to the total electric energy consumption and the total machining time. By optimizing the machining time of each procedure, the operation time and idle time of an operation machine are reasonably allocated, and the production electric energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of a casting production line, in particular to a multi-objective optimization method for a casting production line. Background technique [0002] With the rise of the industrial 4.0 scientific and technological revolution, my country's foundry industry has developed rapidly, and castings are widely used in aviation, aerospace, weapons, ships, automobiles and electronics industries. Low efficiency, poor consistency and high energy consumption. It is difficult to meet the requirements of high-end equipment manufacturing for precision, efficiency and energy saving. High-efficiency, high-intelligence, energy-saving and environment-friendly foundry production lines have become the trend of industrial production in the future. [0003] Most of the traditional production scheduling problems for casting production lines only consider production cost and production efficiency, and use the balance rate or smoothing c...

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a multi-objective optimization method for a casting production line to solve the problem that in the production scheduling process of the production line in the prior art, it is usually assumed that the operating machine is performing operations at its maximum speed, starting when the scheduling allows, otherwise Idle, which will lead to unnecessary high power acceleration and longer idle time, while the machine is still consuming power when idle, which not only causes waste of resources, but also increases production costs

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