Theory of metal Machining terms

Question 1

Conventional machining

Answer 1

Sharp cutting tool is used to mechanically cut the material to desired geometry

Question 2

Abrasive process

Answer 2

Mechanically remove material using hard abrasive particles

Question 3

Material Removal Process

Answer 3

Family of shaping operations in which excessive material is removed from starting work part so that what remains is desired final geometry

Question 4

Nontraditional Processes

Answer 4

Processes which use other forms other than cutting tool and abrasive particles to cut away material to remove material

Question 5

machining

Answer 5

manufacturing process in which sharp cutting tool is used to cut away material to leave desired part shape

Question 6

Advantages of machining

Answer 6

• Variety of work material
• Variety of part shapes and geometric features
• Dimensional accuracies
• Good Surface Finish

Question 7

Disadvantages of machining

Answer 7

• wasteful of materials
• time consuming

Question 8

Cutting speed

Answer 8

primary motion in machining

Question 9

Feed

Answer 9

Secondary motion in machining

Question 10

Turning

Answer 10

Machine Operation where a cutting tool with a single cutting edge is used to remove material from rotating workpiece to generate a cylindrical shape

Speed motion provided by rotating workpat and feed ktion provided by cutting tool moving slowly in direction parallel to axis of rotation of workpiece

Question 11

Drilling

Answer 11

Machining operation used to create holes

Accomplished by rotating tool that typically has two cutting edges. Tool fed in direction parallel to its axis of rotation

Question 12

Milling

Answer 12

Machining operation where rotating tool with multiple cutting edges is fed slowly across work material to generate a plane or straight surface

Direction of feed is perpendicular to tool’s axis of rotation

Question 13

rake angle

Answer 13

Rake ace us oriented at a certain angle known as rake angle

Question 14

rake face

Answer 14

directs the flow of the newly formed chip

Question 15

relief angle

Answer 15

Angle that orients the flank surface

Question 16

Basic types of cutting tools

Answer 16

a) single point tool
b) multiple point cutting edge tools

Question 17

single point tools

Answer 17

has one cutting edge and and is used for operations such as turning

Question 18

multiple cutting edge tool

Answer 18

Have more than one cutting edge and usually achieve their motion relative to the workpart by rotating

Includes drilling and milling