摘要
通过考察工艺参数(砂轮线速度、工作台速度和磨削深度)对磨削力、表面粗糙度及工件表面微观形貌的影响及最大未变形切屑厚度与比磨削能的关系,探讨了金属陶瓷材料的高速超高速磨削性能,即提高砂轮线速度,可使磨削力、表面粗糙度值大幅减小,材料塑性去除趋势增强;提高磨削深度和工作台速度将使磨削力和表面粗糙度值变大,材料脆性断裂去除趋势增强;提高砂轮线速度,可使最大未变形切屑厚度减小,比磨削能增大;提高磨削深度和工作台速度将使最大未变形切屑厚度变大,比磨削能减小。试验结果表明高速超高速磨削技术能够降低金属陶瓷材料出现崩边和裂纹现象的几率,并实现高效精密加工。
By considering effect of process parameters （ such as grinding wheel speed, worktable speed and cutting depth） and relations between maximum undeformed chip thickness and specific grinding energy, probed into performances of metal ceramics in high and ultra-high grinding process, that is, increasing wheel speeds makes grinding forces and surface roughness decrease greatly, and material plastic removal trends are enhanced; increasing cutting depths and worktable speeds make grinding forces and surface rough- ness greater, and material brittle fracture removal trends are enhanced; increasing wheel speeds makes maximum undeformed chip thickness decrease, and makes specific grinding energy greater l increasing cutting depths and worktable speeds make maximum undeformed chip thickness greater, and makes spe- cific grinding energy decrease. The experimental results shows high and ultra-high grinding technologies can reduce probability which broken edges and cracks emerge in machining metal ceramics, and realize their machining efficiently and precisely.
出处
《制造技术与机床》
CSCD
北大核心
2012年第7期144-148,共5页
Manufacturing Technology & Machine Tool
基金
国家科技重大专项"高档数控机床与基础制造装备"(2011ZX04002-031)
关键词
金属陶瓷
高速超高速
磨削磨削力
表面粗糙度
Metal Ceramics
High and Uhra-high Speed Grinding
Grinding Force
Surface Roughness
