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Types of Chip in Machining

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Questions and Answers

What is the cutting speed, v, usually expressed in?

mm/min
mm/rev
m/min (correct)
m/s

In turning, what is the feed defined as?

Tool diameter advancement
Distance tool advances in one workpiece revolution (correct)
Saw blade speed
Workpiece rotation rate

How is feed rate, f, usually expressed?

m/min
mm/rev (correct)
rpm
m/rev

What is depth of cut in machining?

The distance through which the cutting tool enters the workpiece (C) Signup and view all the answers

How is cutting speed, V, calculated in turning?

$V = \frac{\pi D \times N}{1000}$ m/min (A) Signup and view all the answers

What does rotational speed, N, represent in machining?

Workpiece revolution rate (C) Signup and view all the answers

What is the formula for calculating rotational speed, N?

$N = \frac{1000 V}{\pi D}$ rpm (B) Signup and view all the answers

Which parameter refers to the movement of the tool cutting edge in millimeters per revolution of the workpiece?

Feed rate (f) (D) Signup and view all the answers

What does depth of cut measure in relation to the workpiece surface?

$\frac{D - d}{2}$ mm (D) Signup and view all the answers

Why is it important for the cutting fluid to have good cooling ability?

To reduce heat generation at bearing areas and due to plastic deformation of the workpiece material. (B) Signup and view all the answers

What is the main purpose of good lubricity in cutting fluids?

To prevent dry rubbing and seizure at cutting and contact areas. (C) Signup and view all the answers

Why is low viscosity important for cutting fluids?

To ensure penetration in small passages between the cutting edge and workpiece surface. (D) Signup and view all the answers

What does high clearness in cutting fluids help achieve?

Reasonable tool life and chip removal rate. (D) Signup and view all the answers

Why should the cutting fluid have good transportability?

To continuously remove chips from the cutting area. (A) Signup and view all the answers

What role does the cutting fluid play in reducing friction forces at bearing areas?

Act as a lubricant to reduce friction and heat generation. (B) Signup and view all the answers

How does the cutting fluid contribute to preventing seizure at the cutting and contact areas?

By preventing dry rubbing through good lubricity. (C) Signup and view all the answers

What effect can low viscosity of cutting fluid have on machining efficiency?

Ensure effective penetration into restricted areas for cooling and lubrication. (D) Signup and view all the answers

Why is high clearness important in a cutting fluid?

To achieve reasonable tool life and ensure effective removal of chips from the machining zone (D) Signup and view all the answers

Why must a cutting fluid have good transportability?

To continuously remove chips from the cutting area (A) Signup and view all the answers

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