Manufacturing And Production Technology - Study Mode

[#216] In American Standard Association (ASA) system, if the tool nomenclature is 8-6-5-5-10-15-2 mm, then the side rake angle will be
Correct Answer

(B) 6°

Explanation

Solution: According To ASA System the tool nomenclature is to be followed by this procedure :

Back rake angle, Side rake angle, Front or end clearance or relief angle, Side clearance angle or relief angle, End cutting edge angle, Side cutting edge angle, Nose radius.

From the System Side rake angle is 6°

[#217] Chip breakers are used to
Correct Answer

(C) Break the chips into short segments

Explanation

Solution: The function of a chip breaker is to improve chip control and to reduce cutting resistance.
A better balance between the two will increase the machining performance.
Reduced cutting resistance can avoid chipping and fracturing of the cutting edge caused by vibration

[#218] Negative rakes are used for
Correct Answer

(D) All of these

Explanation

Solution: Negative rake angles are more commonly used for carbide tipped tools.
Negative rake angles can be considered for intermittent cuts and heavy stock removal.
And also when machining hard and brittle materials, such as titanium or stainless steel.

[#219] Which of the following operations is carried out at a minimum cutting velocity if the machines are equally rigid and the tool work materials are the same?
Correct Answer

(D) Milling

Explanation

Solution: milling is carried out at a minimum cutting velocity if the machines are equally rigid and the tool work materials are the same.

[#220] Internal or external threads of different pitches can be produced by
Correct Answer

(C) Planetary milling machine

Explanation

Solution: Planetary Mills are ideally suited for fine grinding of hard, medium-hard, soft, brittle, tough and moist materials.

Internal or external threads of different pitches can be produced by Planetary milling machine