Tool replacement and machining optimization for the drill process

钻孔过程的刀具更换和加工优化

• 批准号: 442138-2012
• 负责人: Chen, Xiongbiao
• 金额: $ 2.91万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=534267
• 关键词: Tool; replacement; machining; optimization; drill

This project specifically concerns a drill process at Hitachi Power Systems Canada Ltd., Saskatoon (http://www.hitachi.sk.ca/; hereafter Hitachi), a key facility for the manufacturing of various heavy products, such as heat exchangers. The drill process is used to drill over thousands of tight-tolerance holes on the workpieces for the production of heat exchangers. In the process, it is vital to ensure the drill or cutting tool used is in good condition as the use of worn-out cutting tools leads to a dramatic decline in accuracy, and also potentially damages both the machining tool equipment and the workpiece. On the other hand, replacing drills prematurely adds machining costs. As such, replacing cutting tools at the appropriate time is important for improving the automation of machining processes, increasing manufacturing productivity, and minimizing machining costs. This project aims to establish an on-line tool wear monitoring system and, based on these measurements, develop methods to determine the time when the drills need to be replaced as well as cutting conditions that maximize tool lifetime while ensuring hole accuracy. The success of this project will have immediate technological and economic benefits to Hitachi and other Canadian industries that use their products. The project will also generate new knowledge on manufacturing automation while training graduate students to meet the increasing demand for highly qualified personnel in the Canadian manufacturing sector.

该项目具体涉及日立动力系统加拿大有限公司的钻孔过程，萨斯卡通（http：//www.hitachi.sk.ca/;以下简称日立），是制造各种重型产品（如热交换器）的关键工厂。钻孔工艺用于在热交换器生产的工件上钻制数千个紧公差孔。在此过程中，确保所使用的钻头或切削刀具处于良好状态至关重要，因为使用磨损的切削刀具会导致精度急剧下降，并且还可能损坏加工工具设备和工件。另一方面，过早更换钻头会增加加工成本。因此，在适当的时间更换切削刀具对于提高加工过程的自动化、提高制造生产率和最小化加工成本是重要的。该项目旨在建立一个在线刀具磨损监测系统，并根据这些测量结果，制定方法来确定钻头需要更换的时间以及在确保孔精度的同时最大限度地延长刀具寿命的切削条件。该项目的成功将为日立和使用其产品的其他加拿大工业带来直接的技术和经济利益。该项目还将产生关于制造自动化的新知识，同时培训研究生，以满足加拿大制造业对高素质人才日益增长的需求。