摘要
在提倡绿色制造的背景下,设计一款减少液体冷却用量,增强气体冷却效果,提高冷却效率的低温组合冷却系统,实现机加工过程中减少零件变形和提高刀具寿命的要求。文中根据加工冷却要求,通过动态感知现场状态,用PID控制算法,由单片机系统实时操控冷却系统,分别以干式、半干式(气液组合)两种冷却模式实现对加工区域冷却作业。冷却系统由气冷、液冷和气液组合冷却组成,提供小于5℃低于0.5 Mpa的持续低温气体和15℃以下可调输出量的冷却液体,实现多种冷却方式。系统以车床加工长轴为研究对象,分别以无冷却、液体冷却、低温气液组合冷却三种模式进行实验,记录加工过程实时温度,分析数据表明,低温气液组合冷却模式冷却效果最好,液体使用量最少,约为纯常温液体冷却用量的40%左右,达到了设计的要求,具有一定的工程应用价值。
Under the background of promoting green manufacturing,a low-temperature combined cooling system is designed to reduce the liquid cooling amount,enhance the gas cooling effect and improve the cooling efficiency,so as to reduce the deformation of parts and improve the tool life in the machining process.According to the processing cooling requirements,the cooling system is controlled by the single chip microcomputer system in real time through dynamic perception of the field state and PID control algorithm.Two cooling modes of dry type and semi-dry type(gas-liquid combination)are used to realize the cooling operation of the processing area.The cooling system is composed of air cooling,liquid cooling and gas liquid combination cooling,providing continuous low temperature gas less than 5℃ and less than 0.5Mpa and cooling liquid with adjustable output below 15℃ to achieve a variety of cooling methods.The system takes the long shaft of lathe processing as the research object,and conducts experiments in three modes of non-cooling,liquid cooling and low-temperature gas-liquid combination cooling,respectively,and records the real-time temperature of the processing process.The analysis data shows that the low-temperature gas-liquid combination cooling mode has the best cooling effect,and the liquid consumption is the least,about 40%of the pure liquid cooling consumption at normal temperature,which meets the design requirements.It has certain engineering application value.
作者
陈星
CHEN Xing(College of Intelligent Manufacturing,Nanjing college of Information Technology,Nanjing 210036,China)
出处
《山东工业技术》
2023年第6期57-63,共7页
Journal of Shandong Industrial Technology
基金
南京信息职业技术学院自然科研基金项目(YK20210201)。
关键词
气液混合
冷却系统
单片机控制
涡流制冷
gas-liquid mixture
cooling system
single-chip microcomputer system
eddy current refrigeration
