通过对切屑截面几何、变形状态及切削比的实验分析，研究了非自由切削的变形特征。
The deformation characteristics of non free cutting (NFC) are experimentally studied with the chip cross section geometry, the deformation configuration and the cutting ratio.
计算机模拟结果表明，时变进给切削比单调增大进给切削更能有效地抑制颤振。在一定的条件下，时变进给量变化幅度及变化频率越大，抑振效果越好。
The results of computer simulation demonstrates that it is more efficient to suppress chatter by time-varying feed rate cutting than by increasing feed rate cutting only.
对一些应用来说，尤其是非常高速的切削很重要的场合，其它的工具材料比如硬质合金产品是比工具钢更经济的选择。
For some applications, especially where extremely high-speed cutting is important, other tool materials such as sintered carbide products are a more economical alternative to tool steel.
镁合金是比重最轻的结构材料，具有高的比强度、比刚度和良好的磁屏蔽性、阻尼性、切削加工性等优点。
As the lightest constructional material, magnesium alloy has high specific strength, high specific stiffness, good magnetic-shielding ability, good damping ability, and good machinability.
这种光束比机械切削器能运转得更为精确。
The light beam can be steered more accurately than a mechanical cutter.
事实上，铣削允许的切削速度和进给比车削或钻削高三到四倍。
In fact, the permissible cutting speeds and feeds for milling are three to four times higher than those for turning or drilling.
采用超高速磨削，对改善磨粒的切削状态，降低比磨削能是非常有利的。
The ultra high speed grinding mode may improve the cutting conditions of the grains and thus reduce the specific grinding energy.
采用超高速磨削，对改善磨粒的切削状态，降低比磨削能是非常有利的。
The ultra high speed grinding mode may improve the cutting condition of the grains and thus reduce the specific grinding energy.
本文主要研究了应力场下锯切切削力的特点。试验证明在拉应力场下锯切工件比普通锯切工件的锯切力小，使切削更加有利、高效。
This paper mainly study the feature of sawing force under stress field. The experiments prove that the cutting force under stress field is smaller than that of common sawing.
切削试验表明：具有梯度结构涂层硬质合金刀片的切削性能比无梯度结构涂层硬质合金刀片的切削性能更为优良。
The cutting tests demonstrate that the cutting property of the coated cemented carbide with gradient structure is much better than those without gradient structure.
切削刀具必须比要切削的材料硬。
The cutting tool must be harder than the material to be cut.
其解释、演示齿轮范成的概念比观察实际切削加工和用仪器做实验具有更好的效果，更多的功能。
This method has better effect and function in interpreting and demonstrating the concept of envelope cutting gear than observing cutting gear or making experiment with instrument.
结果表明，攻丝扭矩随净切削时间比的增加而增大，且对攻丝扭矩的影响最显著。
The analysis indicates that tapping torque increases as net cutting time ratio increases, where net cutting time ratio influences the tapping torque more significantly.
结果表明，激光辅助切削的主切削力和径向力分别比常规切削下降了23.5%和19.9%；
The results show that the main cutting force and radial force decreased by 23.5% and 19.9% compared with conventional machining.
陶瓷刀具材料是一种先进的切削刀具材料，由于其优良的切削性能和高的性能价格比而受到了人们的青睐。
Ceramic tool material is an advanced cutting tool material. Because of its excellent performance and high ratio of property to price, it is in user's good graces.
陶瓷刀具是一种先进的切削刀具，由于其优良的切削性能和高的性能价格比而受到了人们的青睐。
Ceramic tool is an advanced cutting tool. Because of its excellent performance and high ratio of property to price, it is in user's good graces.
根据似然比检验原理提出了一种新的机床切削颤振监测统计量，能识别切削过程中产生的信噪比为0.15的微弱振动成份。
Based on the likelihood ratio test theory, a new detection statistic is proposed in this paper for monitoring the machine tool cutting chatter development.
根据似然比检验原理提出了一种新的机床切削颤振监测统计量，能识别切削过程中产生的信噪比为0.15的微弱振动成份。
Based on the likelihood ratio test theory, a new detection statistic is proposed in this paper for monitoring the machine tool cutting chatter development.
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