Model-based Numerical Control (MNC) for the automation of casting processes

用于铸造工艺自动化的基于模型的数控 (MNC)

• 批准号: 388379678
• 负责人: Dr.-Ing. Armin Lechler
• 金额: --
• 依托单位: Institut für Steuerungstechnik der Werkzeugmaschinen und Fertigungseinrichtungen (ISW)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/388379678?language=en
• 关键词: Model; based; Numerical; Control; MNC

Casting is an elementary molding process for producing metallic products with gravity casting being the most common form of casting. Presently, a full automation of casting processes only takes place for large quantities using special control systems. In (partially) automated systems, the process sequence is programmed by means of teach-in processes. This programming requires, however, expertise by the worker and a direct interaction with the casting process in the danger zone, which results from handling liquid metal. This type of programming cannot be parameterized, therefore, scalability is not given and the motion sequences must be reprogrammed with every change. However, mathematical and physical models for the casting process, which are suitable for calculating the motions in compliance with the relevant process targets such as flow rate and target point of the substance to be cast, are already explored. But this special control system lack the necessary flexibility, so that the casting process can be simple and machine-independent programmed. NC systems have a high flexibility and the potential of easily parameterizing the process. These benefits are to be transferred to the casting process by combining an NC with process models. The objective of the project is the development of an NC architecture that, based on process models, turns gravity casting for any lot sizes into a fully automated process.

铸造是生产金属产品的基本成型工艺，重力铸造是最常见的铸造形式。目前，铸造过程的全自动化仅在使用特殊控制系统的大批量生产中进行。在（部分）自动化系统中，过程序列通过示教过程编程。然而，这种编程需要工人的专业知识，以及与危险区域中的铸造过程的直接互动，这是由于处理液态金属造成的。这种类型的编程不能被参数化，因此，没有给出可扩展性，并且运动序列必须随着每次改变而重新编程。然而，已经探索了用于铸造过程的数学和物理模型，其适合于计算符合相关过程目标（诸如待铸造物质的流速和目标点）的运动。但这种特殊的控制系统缺乏必要的灵活性，因此铸造过程可以简单且与机器无关地编程。数控系统具有很高的灵活性和易于参数化的潜力。通过将NC与过程模型相结合，这些优势将被转移到铸造过程中。该项目的目标是开发一种基于过程模型的NC架构，将任何批量的重力铸造转变为全自动化过程。