刀具成本的检测-机械译文翻译

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河南理工大学万方科技学院本科毕业论文

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外文资料和中文翻译

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Testing of Tool Life Cost

Machining cost is the sum of the machine tool cost and the cutter cost.

The machine cost consists of idle cost, machining cost, and tool changing

cost. The machining cost decreases with increased cutting speed; while the

idle cost remains constant with changes in cutting speed. From the machining

data handbook [24] the generalized machining cost equation is listed below:

In order to optimize the cutting condition, it is essential to determine the

mathematical relationship between the cuttings inserts type and cutting

speed. In our study Taylor's model will be used in relating the cutting tool

life to the cutting speed:

VT" =C ....................................

V= cutting speed

T= Cutting time to produce a standard amount of flank wear (e.g.

0.2mm) n and C are constants for the material or conditions used.

In order to determine constants `n' and `C' for the cutting inserts under

study in machining 4140 steel and the conditions used in the experiments, a

河南理工大学万方科技学院本科毕业论文

LogV against LogT is drawn and shown for the three types of cutting inserts

under study Figure 1, Figure 2are for KC313 under dry and wet conditions,

Figure 3, and Figure 4are for KC732. In addition, Figure 6, and Figure 7are

for KC5010. It can be seen from the aforementioned figures that in-spite of

considerable scatter in test measurements, the results fall reasonably well

on a straight line. From the curves it can be seen that for the same cutting

speed the tool life increases by increasing the wear criterion and

introduction of coolant emulsion for KC313 and KC732. However, as seen in

KC5010 tool life increases by increasing the wear criterion and decreases by

introducing coolant. This negative behavior of KC5010 toward coolant emulsion

and the effect of wear mechanisms behind it will be covered in Chapter 5. As

well as the wear kinds on other inserts investigated in this research.

Metal cutting studies focused on tools' wear, tool life, and wear

mechanisms. However, future research should pay more attention to other

factors as well:

Wear criterion value set up by the factory system, which basically

the tool wear threshold value that suits the factory product.

Types of tools used, such as carbide tips and high speed tools.

Studying the variation of tool life wear under dry and wet cutting

that effect the tool life equation constants (C,n) is useful. This

will improve tool life because it also affects the economy of

cutting [24].

In order to determine the effect of cutting fluid on the selected wear

criterion, relationship between different wear criteria and machining cost

河南理工大学万方科技学院本科毕业论文

for the cutting inserts under HSM must be studied. The value of the tool life

constants (C,n) for different wear criteria are extracted and plotted within

the ranges listed in table (1). The values of the constants (C, n) extracted

from Figure 1/B, Figure 3IB, and Figure 3-10 are shown in tables1 and 2.

Further explanation of the relationship between these parameters and wear

criteria will be covered through out the next figures. Figure5represents the

relationship between `n' and wear criterion. As wear criterion increase `n'.

(a) Log (time) versus Log (speed) at different wear criteria (dry condition).

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河南理工大学万方科技学院本科毕业论文附录：外文资料和中文翻译外文资料：TestingofToolLifeCostMachiningcostisthesumofthemachinetoolcostandthecuttercost.Themachinecostconsistsofidlecost,machiningcost,andtoolchangingcost.Themachiningcostdecreaseswithincreasedcuttingspeed;whiletheidlecostremainsconstantwithchangesincuttingspeed.Fromthemach...

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