高效深磨中温度的理论分析  

Theoretical Research of Temperatures in High Efficiency Deep Grinding(HEDG)

作　　者：徐慧蓉[1] 徐海洋[2] 郭力[1] 

机构地区：[1]长沙湖南大学机械与汽车工程学院,长沙410082 [2]长沙湖南大学材料科学与工程学院,长沙410082

出　　处：《机床与液压》2004年第8期104-106,93,共4页Machine Tool & Hydraulics

摘　　要：本文提出了高效深磨的热模型。该热模型中 ,工件与砂轮的接触用圆弧面表述。发现接触角和Peclet数对磨削区温度有很强的影响。发现材料去除率高而且无磨削烧伤。新热模型对接触区温度很准确的预测。还发现高效深磨中比磨削能很低。而磨屑带走了大部分热。同时 ,在磨削液被阻碍进入磨削区后 。A thermal model was presented for the HEDG process that the contact between the workpiece and wheel was represente as a circular surface.The results show that the contact angle and the Peclet number (widely used in heat transfer and define below) have strong effects on the grind zone temperatures,and high removal rates and absence of thermal damage can be achieved as predicted. The new model provides a good estimation of contact temperatures,and confirm that HEDG can achieve low specific grinding energy compared with shallow grinding and creep grinding.The chips take away a substantial proportion of the heat generated in the grinding process. Burn out of the coolant causes a steep rise in contact temperature of the work piece.

关 键 词：磨削 温度 高效深磨 热模型 Peclet数 接触角 磨削液 

分 类 号：TG58[金属学及工艺—金属切削加工及机床]