|
|
|
| Effect of Surface Structure on Grinding Performance of Internal Cooling Grinding Wheel |
| PENG Ruitao 1，2 ，GAO Shan 1 ，CHEN Meiliang 1 ，LIU Bo 3 |
1. Xiangtan University, Xiangtan 411105, China;
2. Engineering Research Center of Complex Track Processing Technology & Equipment, Ministry of Education, Xiangtan University, Xiangtan 411105, China;
3. AECC Hunan Aviation Powerplant Machinery Research Institute, Zhuzhou 412002, China |
|
|
|
|
Abstract Aiming at the overheating and low machining efficiency problems in grinding superalloys, an internal cooling grinding wheel with a replaceable abrasive ring is proposed. To improve the flow characteristic and heat transfer performance of fluid in the grinding arc zone, surface structure of the ring and the internal flow channel outlet shape are designed based on the sunflower seed phyllotaxis configuration model. The flow field distribution model in grinding arc zone is established based on the computational fluid dynamics (CFD) method, finally the grinding tests of superalloy are carried out. Results indicate that abrasive cluster of phyllotaxis configuration leads to enhanced flow and cooling characteristics, compared with the circular flow channel, better cooling and lubrication effects are obtained by the rectangular flow channel, and the heat exchange efficiency is more remarkable as the grinding speed increases. Average grinding temperature and surface roughness of the workpiece are reduced by 24.12% and 18.50% respectively, and the machined surface morphology is smoother and more regular.
|
|
|
|
|
|
|
|
|
2022, 
