19 Questions
What is the cutting speed, v, usually expressed in?
m/min
In turning, what is the feed defined as?
Distance tool advances in one workpiece revolution
How is feed rate, f, usually expressed?
mm/rev
What is depth of cut in machining?
The distance through which the cutting tool enters the workpiece
How is cutting speed, V, calculated in turning?
$V = \frac{\pi D \times N}{1000}$ m/min
What does rotational speed, N, represent in machining?
Workpiece revolution rate
What is the formula for calculating rotational speed, N?
$N = \frac{1000 V}{\pi D}$ rpm
Which parameter refers to the movement of the tool cutting edge in millimeters per revolution of the workpiece?
Feed rate (f)
What does depth of cut measure in relation to the workpiece surface?
$\frac{D - d}{2}$ mm
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.
What is the main purpose of good lubricity in cutting fluids?
To prevent dry rubbing and seizure at cutting and contact areas.
Why is low viscosity important for cutting fluids?
To ensure penetration in small passages between the cutting edge and workpiece surface.
What does high clearness in cutting fluids help achieve?
Reasonable tool life and chip removal rate.
Why should the cutting fluid have good transportability?
To continuously remove chips from the cutting area.
What role does the cutting fluid play in reducing friction forces at bearing areas?
Act as a lubricant to reduce friction and heat generation.
How does the cutting fluid contribute to preventing seizure at the cutting and contact areas?
By preventing dry rubbing through good lubricity.
What effect can low viscosity of cutting fluid have on machining efficiency?
Ensure effective penetration into restricted areas for cooling and lubrication.
Why is high clearness important in a cutting fluid?
To achieve reasonable tool life and ensure effective removal of chips from the machining zone
Why must a cutting fluid have good transportability?
To continuously remove chips from the cutting area
Learn about the different types of chip formation in machining: Discontinuous chip, Continuous chip, and Continuous chip with Built-up Edge (BUE). Understand the characteristics of each type and the factors that influence their formation.
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