公开(公告)号：US11047818B2

公开(公告)日：2021-06-29

申请号：US16672540

申请日：2019-11-04

申请人： QINGDAO UNIVERSITY OF TECHNOLOGY ,  UNIVERSITY OF SOUTHERN CALIFORNIA

发明人： Changhe Li ,  Min Yang ,  Runze Li ,  Yanbin Zhang ,  Xianpeng Zhang ,  Heju Ji ,  Yali Hou ,  Naiqing Zhang ,  Qidong Wu

IPC分类号： G01N25/18 ,  G01K1/08 ,  G01K1/14 ,  G01K13/00 ,  G01K7/02 ,  G01N25/20

摘要： The present invention discloses an integrated online measurement system for thermophysical property parameters of nanofluid cutting fluid, consisting of a gas path system, a fluid path system, a nanofluid thermal conductivity measurement device, a measurement device for a convective heat transfer coefficient and a nanofluid/workpiece heat partition ratio of the nanofluid cutting fluid, and a grinding force and grinding temperature measurement device or a milling force and milling temperature measurement device; the nanofluid thermal conductivity measurement device is located in the fluid path system; the gas path system provides pressure for the nanofluid in the fluid path system, two nozzles lead out from the fluid path system, and the nanofluid gas spray ejected by the nozzle I is sprayed onto the surface of a workpiece I to form the measurement device for the nanofluid convective heat transfer coefficient and the nanofluid/workpiece heat partition ratio; and the nanofluid gas spray ejected by the nozzle II is sprayed onto the surface of a workpiece II to form the grinding force and grinding temperature measurement device.

公开(公告)号：US11597049B2

公开(公告)日：2023-03-07

申请号：US16344158

申请日：2018-12-04

申请人： QINGDAO UNIVERSITY OF TECHNOLOGY

发明人： Changhe Li ,  Teng Gao ,  Yanbin Zhang ,  Min Yang ,  Dongzhou Jia ,  Xianpeng Zhang ,  Yiliang Yang ,  Zhaorong Bing ,  Naiqing Zhang ,  Han Zhai ,  Yali Hou

IPC分类号： B24B1/04 ,  B24B41/06 ,  B24B55/02

摘要： A NMQL grinding device of ultrasonic vibration assists grinding fluid micro-channel infiltration, and solves the problem that nanofluids are difficult to fully infiltrate the grinding zone in the prior art. Fully considers the impact of thickness of undeformed grinding debris on the grinding process and the lubrication state of single grains during material removal in the grinding process, the advantage of ultrasonic vibration assistance on improving the lubri-cooling performance of NMQL grinding is effectively achieved. According to the solution, the device includes an ultrasonic vibration mechanism capable of adjusting the spatial position of ultrasonic vibrators, the mechanism being arranged on a worktable; a NMQL grinding mechanism, arranged above a workpiece fixing table; and a grinding force measuring mechanism, including a dynamometer and a grinding force controller connected with the dynamometer, the dynamometer being arranged at the bottom of the ultrasonic vibration mechanism.