TU11_BasicCuttingTheory Vocab

Question 1

Brittle

Answer 1

Difficult to bend, stretch, or form without breaking. These metals tend to produce discontinuous chips.

Question 2

Built-Up Edge

Answer 2

BUE. Deformed metal that adheres to the cutting edge of the tool under high pressures and temperatures. Ductile metals tend to produce more of it.

Question 3

Crater Wear

Answer 3

Tool wear that creates a concave depression in the face of the cutting tool above the cutting edge. This type of wear is named for its shape and appearance.

Question 4

Flutes

Answer 4

A spiraling groove on the periphery of a cutter. It allow for chip flow away from the cut.

Question 5

Negative Rake Angle

Answer 5

A rake angle producing a top surface of the cutting edge that slopes up and towards the centerline of the workpiece. This angle position the tool beyond a line perpendicular to the workpiece.

Question 6

Positive Rake Angle

Answer 6

A rake angle producing a top surface of the cutting edge that slopes down and away from the centerline of the workpiece. This angle position the tool behind a line perpendicular to the workpiece.

Question 7

Rake Angle

Answer 7

The angle between the front of the cutting tool and a line perpendicular to the workpiece surface. This type of angle measure how far the front of the tool is from the workpiece axis.

Question 8

Relief Angle

Answer 8

The angle that is formed by the surface of the workpiece and the bottom end of the cutting tool. This type of angle measure how much space exists between the bottom of the tool and the workpiece surface.

Question 9

Zero Rake Angle

Answer 9

A rake angle producing a top surface of the cutting edge completely perpendicular to the centerline of the workpiece. It is an angle 90° from the workpiece axis.