Line production line workload prediction method based on delivery date

Abstract

The invention provides a line production line workload prediction method based on a delivery date. The method comprises the steps of forming an in-process product list information set; forming a virtual workpiece list information set; calculating a production periodic table according to the historical workpiece information; integrating the in-process product list information and the virtual workpiece list information as a set of elements to obtain a simulated workpiece list information set; obtaining a complete technological process of each simulation workpiece; calculating estimated shipmenttime according to the time of arriving at the current station, the operation time, the waiting time and the stagnation time, and calculating a coefficient according to the estimated shipment time; calculating estimated arrival time, estimated start time and estimated end time of each step according to the coefficients; and obtaining a prediction set of prediction information for each simulated workpiece. According to the method, the coefficient value is used for correcting the production period, the future workload prediction of the whole production line is quickly realized, the data are analyzed, and the regulation and control purposes of production regulation and control, productivity early warning, operation scheduling and the like are achieved in combination with the condition of the actual production line.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to a method for predicting the workload of an assembly line based on a delivery date. Background technique [0002] The flow-shop production line usually pre-sets the product flow according to the product. The work flow is composed of a number of steps arranged in sequence. After the workpiece enters the production line, it is carried out step by step according to the predetermined product flow. Processing until the processing of all processes is completed. [0003] Forecasting the amount of work (move) is one of the important means of production control. Conventional technology is a forecasting method based on historical turnover rate (TR, turn ratio) or DPML (day per mask layer). Both TR and DPML are indicators of product movement rate. TR usually refers to the number of moves completed by a workpiece (lot) within 1 day, and DPML refers to the number of days required to c...

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Problems solved by technology

[0010] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a method for predicting the amount of work in an assembly line based on the delivery date, which is used to solve the problem that the difference in the actual working time of different process steps cannot be considered in the prior art and Unable to classify and count different dimensions, failing to meet the use requirements of production regulation and capacity early warning

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