分析了切削硬岩时的刀具磨损和破损特征。
刀具的磨损和破损是切削加工研究的重点。
The cutting abrasion of tools is the focus in cutting study.
切削热是铣刀片磨损和破损产生的重要原因。
Cutting heat is the main reason of wears and damages of milling insert.
当很小，钻要求焊机械位是昂贵的，因为高水平的磨损和破损。
When very small vias are required, drilling with mechanical bits is costly because of high rates of wear and breakage.
在定向井中使用，可以在较低扭矩的情况下高速钻进，减少了钻柱的磨损和破损。
Uses in the directional well, might in compare the low torque in the situation to sneak in high speed, reduces drilling string 's attrition and the breakage.
采用机床主电动机功率法和声发射（AE）法来获取切削过程中发出的刀具磨损和破损信号，建立了刀具状态试验系统。
Experiments were implemented to obtain the motor power and AE signals under different cutting parameter condition(cutting velocity, feed velocity and cutting depth), tool wear and breakage conditions.
检测机械工具的工具磨损(大负荷)和破损(小负荷)、停机或信号维护，以增加安全性。
Detects tool wear (high load) or breakage (low load) in machine tools and shutdown or signals maintenance for added safety.
测绘了切削温度、后刀面磨损量与切削时间或切削速度的关系曲线，分析了刀具前、后刀面显微磨损、破损形貌和化学变化。
Cutting temperature, relation curves of wear with cutting time and cutting speed, microscopic features and chemical changes of rack face and rear face of the tin coated tool were measured.
在对挤压丝锥的磨损、破损特征和机理进行研究的基础上，提出了改进挤压丝锥结构的方法。
The characteristics and mechanism of wear and fracture of the tap have been researched, and a method to improve the structure of cold forming tap was also proposed in this paper.
在对挤压丝锥的磨损、破损特征和机理进行研究的基础上，提出了改进挤压丝锥结构的方法。
The characteristics and mechanism of wear and fracture of the tap have been researched, and a method to improve the structure of cold forming tap was also proposed in this paper.
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