公开(公告)号：US10695889B2

公开(公告)日：2020-06-30

申请号：US15755251

申请日：2017-02-21

Applicant: QINGDAO TECHNOLOGICAL UNIVERSITY

Inventor： Changhe Li ,  Xianpeng Zhang ,  Yanbin Zhang ,  Min Yang ,  Shuming Guo ,  Naiqing Zhang ,  Qidong Wu ,  Huajun Cao

IPC: B24B55/02 ,  B24B1/04 ,  B24B49/10 ,  B24B49/03 ,  B24B41/06 ,  B24B49/14 ,  B24D7/10

Abstract: A multi-angle two-dimensional ultrasonic vibration assisted nanofluid micro-lubrication grinding device includes a workpiece fixture for clamping a workpiece and a grinding wheel for grinding the workpiece, the fixture being connected with a two-dimensional ultrasonic vibration device to maintain the sharpness of the grinding wheel cutting edge and cool the grinding temperature on the workpiece surface; a jetting mechanism used for jetting nanofluid to the workpiece is arranged on one side of the grinding wheel so as to form two-dimensional ultrasonic vibration and nanofluid micro-lubrication grinding coupling; the device applies the variable-angle two-dimensional ultrasonic vibration technology to grinding processing, and adjusts the angles of two ultrasonic vibrators to generate different combined vibration directions to change the relative movement trajectories of abrasive particles and a workpiece. A grinding force and grinding temperature are detected in real time by force measurement and temperature measurement devices, meanwhile cooperation with nanofluid micro-lubrication is utilized.

公开(公告)号：US09925638B2

公开(公告)日：2018-03-27

申请号：US15102801

申请日：2015-12-01

Applicant: QINGDAO TECHNOLOGICAL UNIVERSITY

Inventor： Changhe Li ,  Benkai Li ,  Yaogang Wang ,  Min Yang ,  Yanbin Zhang

IPC: B24B55/02 ,  F25B21/00

CPC classification number: B24B55/02 ,  F25B21/00 ,  F25B2321/001

Abstract: A minimal quantity lubrication grinding device including: heat pipe grinding wheel covered with electrocaloric film material on both side surfaces, wherein external electric field is applied to outside of the electrocaloric film material; and electrostatic atomization combined nozzle provided with high-voltage DC electrostatic generator and magnetic field forming device at the outside and in an electrocaloric refrigeration and magnetically enhanced electric field; electrostatic atomization combined nozzle is respectively connected with nanoparticle liquid and gas supply system; and nanofluid is electrostatically atomized by electrostatic atomization combined nozzle and is jet to grinding area to absorb heat of grinding area; electrocaloric film material absorbs heat in grinding area through electrocaloric effect and disperses absorbed heat through heat pipe grinding wheel after leaving grinding area to form a Carnot cycle. Nanofluid electrostatic atomization is integrated with electrocaloric refrigeration and heat pipe.