Computer chip Thickness

1 ) What do you mean by orthogonal cutting and constrained cutting? In orthogonal cutting, the principal innovative of the application is parallel to the horizontal plane perpendicular to The path of nourish motion.

In restricted trimming under regular cutting conditions Due to secondary plastic deformation fictional resistance during computer chip flow over the tool face, rubbing of the chip within the chip-tool user interface causes excessive The struggling forces and interface temp. Now in the event the contact span is decreased by mincing a secondary rake thereby developing a slim contact terrain the pushes and the interface temperature will decrease. The width of the land can be described as restricted get in touch with length as well as the process is named " Limited contact cutting”.

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Abhimanyu Kar

Roll No . 03036

2 .

Deduce the following romantic relationship

tan ОІ =

cos Оі 0 Оѕ в€’ sin Оі 0

Express the presumptions made

Coming from diagram it follows,

capital t tc AB = sama dengan sin ОІ cos(ОІ в€’ Оі Um ) or, tc cos ОІ cos Оі O + sin ОІ bad thing Оі U = big t sin ОІ в‡’ crib ОІ cos Оі Um + trouble Оі Um = Оѕ Оѕ= в‡’ cot ОІ cos Оі O sama dengan Оѕ в€’ sin Оі O в‡’ tan ОІ = cos Оі To Оѕ в€’ sin Оі O

Shear plane STOMACH Shear angle ОІ Rechtwinklig rake position Оі U Chip width t c Uncut density t

Presumptions 1 . The tool hint is sharpened (zero border radius) and the chip makes contact just with the rake face of the device. 2 . The cutting edge can be perpendicular towards the cutting velocity. 3. The deformation is definitely two-dimensional, i. e., zero side distributed occurs. 5. The deformation takes place really thin zone so that the deformation zone could possibly be reasonably showed by a planes (AB), known as the shear plane. 5. Continuous snacks without built-up edge happen to be formed. 6th. The workpiece material can be rigid, correctly plastic.

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Abhimanyu Kar

Roll No . 03036

three or more.

What does the computer chip reduction agent Оѕ show? What are the factors on what Оѕ is dependent?

The chip reduction agent is the quantitative measure of exactely deformed nick thickness for the undeformed 1 during a materials removal procedure if tc is deformed chip width and to is the undeformed chip density then, Оѕ=tc/t. The value of Оѕ indicates the types of chip manufactured in case of material rule operation. Оѕ depend upon which following elements: i. Rake angle (ОіO) Оѕ

ii.

Nose radius (r)

Оѕ

ОіO

iii. Cutting velocity (vc)

ur Оѕ

4. Coefficient of friction (Ој)

Оѕ

vc

Оѕ

v.

Uncut computer chip thickness

Вµ t

vi. Hardness vii. Tool function configuration

5.

State the benefits of managed contact trimming.

The advantages controlled cutting are: i. Not any built-up border (BUE) development. ii. Better surface surface finish. iii. Reduction of flank and crater wear, we. e. increase in tool life. iv. The interval between successive tool grinds raises. i. at the. tool running cost decreases. v. Slicing forces reduce, so gossip decreases. ni. Better reliability. vii. Cheap coolant can also be used. viii. Fairly low electrical power consumption.

a couple of

Abhimanyu Kar

Roll Number 03036

Sample Calculations

a few

Abhimanyu Kar

Roll Number 03036

Effect of true prey on shear angle

45

Shear angle (degrees)

40

thirty-five

30

twenty-five 0. 1 0. 15 0. two True nourish (mm) zero. 25 0. 3

Beta

Effect of true feed on shear strain and reduction rate

3 Chip reduction ratio/ strain

installment payments on your 5

2

1 . five

1 0. 1 zero. 15 zero. 2 The case feed (mm) 0. 25 0. 3

Reduction ratio

Shear tension

4

Abhimanyu Kar

Move No . 03036

Effect of slicing speed upon shear perspective

30

Shear angle (degrees)

25

twenty

15 zero 20 forty 60 85 100 Trimming speed (mm/min)

Beta

Effect ofcutting speed on shear strain and reduction percentage

5 Processor chip reduction ratio/ strain

some

3

two

1 zero 20 forty 60 eighty 100 Cutting speed (mm/min)

Reduction proportion

Shear pressure

5

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