(1. 華南理工大學(xué) 機(jī)械與汽車工程學(xué)院，廣州 510640；2. 深圳大學(xué) 機(jī)電與控制學(xué)院，深圳 518060)
摘 要: 為了高效加工出三維整體高翅片強(qiáng)化傳熱管，提出采用多刀刨削加工三維整體高翅片強(qiáng)化傳熱管的制造方法——利用在基管上同時(shí)刨削出多片不脫離工件的、不發(fā)生卷曲的“切屑”作為三維整體高翅片強(qiáng)化傳熱管的翅片。研究刀具前角、切削厚度對(duì)切屑卷曲的影響，初步探討翅片刨削成形即切屑不卷曲的機(jī)理。結(jié)果表明，切屑不卷曲的條件是當(dāng)?shù)毒咔敖菫?0°或55°時(shí)，切削厚度在0.15~0.25 mm之間，或者前角為50°，切削厚度在0.1~0.2 mm之間時(shí)，切屑不發(fā)生卷曲；切屑不卷曲的機(jī)理在于切屑根部沒(méi)有發(fā)生明顯的剪切變形。
關(guān)鍵字: 三維整體高翅片；強(qiáng)化傳熱管；刨削；切屑卷曲
integral serrated high finned tube made of aluminum alloy
（1. School of Mechanical and Automotive Engineering,
South China University of Technology, Guangzhou 510640, China;
2. College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China）
Abstract:The planing forming using several tools at the same time was proposed to produce the integral serrated high finned tube. By this method, the uncurled chips that are inseparated with base tube are served as integral serrated high fins. The effects of rake angle and cutting thickness on chip curl were investigated and the planing forming mechanism of fins namely chip uncurling was discussed. The experimental results show that the conditions of keeping chip uncurling are that the cutting thickness is 0.15−0.25 mm when the rake angle is 60º or 55º, or the cutting thickness is 0.1−0.2 mm when the rake angle is 50º. The reason of chip uncurling is that no obvious shear deformation occurs in primary shear zone.
Key words: integral serrated high fins; heat transfer enhancement tube; planing; chip curl
