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来源：百度知道 编辑：UC知道 时间：2024/05/26 09:41:41
Tool Life
The types and mechanisms of tool failure have been previously described.Itwas shown that excessive cutting speeds cause a rapid failure of the cutting edge;thus,the tool can be declared to have a short life. Other criteria are sometimes used to evaluate tool life:
1. Change of quality of the machined surface.
2. Change in the magnitude of the cutting force resulting in changes in machine and workpiece deflections causing workpiece dimensions to change.
3. Change in the cutting temperature.
4. Costs,including labor costs,tool costs, tool changing time(cost),etc.
The selection of the correct cutting speed has an important bearing on the economics of all metal cutting operations.Fortunately,the correct cutting speed can be estimated with reasonable accuracy from tool-life graphs or from the Taylor Tool Life Relationship,provided that necessary data are obtainable.
The types and mechanisms of tool failure have been previously described.Itwas shown that excessive cutting speeds cause a rapid failure of the cutting edge;thus,the tool can be declared to have a short life. Other criteria are sometimes used to evaluate tool life:
1. Change of quality of the machined surface.
2. Change in the magnitude of the cutting force resulting in changes in machine and workpiece deflections causing workpiece dimensions to change.
3. Change in the cutting temperature.
4. Costs,including labor costs,tool costs, tool changing time(cost),etc.
The selection of the correct cutting speed has an important bearing on the economics of all metal cutting operations.Fortunately,the correct cutting speed can be estimated with reasonable accuracy from tool-life graphs or from the Taylor Tool Life Relationship,provided that necessary data are obtainable.
刀具（模具）寿命
刀具（模具）失效的类型和机制已如前所述。证据显示切割速度过快加速了刀锋的失效，所以该刀具（模具）可以判定是寿命过短。有时候，也可以通过以下几方面判断刀具（模具）是否失效：
1、机加工面的质量变化（不稳定）
2、切割力度的改变使得机器设备和加工件产生偏移而导致加工件的尺寸改变
3、切割时温度的变化（不稳定）
4、成本，包括人力成本，刀具（模具）成本，刀具（模具）更换（调整）所花费的时间
选择恰当的切割速度，在经济效益上对所有的金属切割工作都有重要意义。幸好，如果有所需的数据，大致恰当的切割速度可以通过刀具（模具）寿命曲线图或泰勒刀具（模具）寿命关系图估算出来。
工具生活工具失败类型和机制早先是described.Itwas 被显示, 过份切口速度导致切口edge;thus 的迅速失败, 工具可能被宣称有短的生活。其它标准有时使用评估工具生活: ．1. 用机器制造的表面的质量的变动。2 。改变在切口力量的巨大造成变化在机器和制件偏折上导致制件维度改变。3 。改变在切口温度。4 。费用, 包括人工成本, 工具花费, 工具改变的time(cost), 等。正确切口速度的选择有一重要对所有金属切口有影响经济operations.Fortunately, 正确切口速度可能估计以合理的准确性从工具生活图表或从泰勒工具生活关系, 在必要的数据是可获得的条件下。
是切削不是切割。