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Digital Manufacturing Mec3030 > Huo > Flashcards

Huo Flashcards

1
Q

Basic manufacturing processes

A

Primary shaping
Secondary shaping
Joining and assembly
Surface treating

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2
Q

Primary shaping examples

A

Casting
Molding
PM methods

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3
Q

Secondary shaping examples

A

Forming

Machining

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4
Q

Joining and assembly examples

A

Welding
Adhesives
Fasteners

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5
Q

Surface treating

A

Heat treatment
Surface treatment
Painting

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6
Q

Definition - machining

A

A subtractive manufacturing process in which excess material is removed until only the desired final geometry remains

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7
Q

Conventional machining

A

A sharp cutting tool used to mechanically cut the material to shape

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8
Q

Non-traditional machining

A

Uses various energy forms to remove material

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9
Q

What is machining usually used for?

A

Finishing process

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10
Q

Conventional machining examples

A 
Turning
Drilling
Milling
Grinding 
Etc
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11
Q

Non-traditional machining examples

A

Electrochemical machining
Thermal energy processes
Chemical machining
Etc

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12
Q

What materials can be machined?

A 
Metals - most common
Polymers
Ceramics
Composites
Natural materials
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13
Q

Special part shape in machining examples

A

Screw threads
Accurate round holes
Very straight edges and surfaces

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14
Q

Benefits of machining

A

Variety of materials can be machined
Variety of part shapes and features possible
Good dimensional accuracy and surface finish

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15
Q

Disadvantages of machining

A

Wasteful of material

Time consuming - longer than casting and molding

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16
Q

Machining in manufacturing sequence

A
  • Usually performed after other manufacturing processes ( casting, forging), which create the general shape of the starting work part
  • Machining - secondary processes and final process
17
Q

Most common machining processes

A

Turning
Drilling
Milling

18
Q

Less common machining processes

A

Shaping and planing
Broaching
Sawing

19
Q

Turning

A

Single point cutting tool removes material from a rotating workpiece to form a cylindrical shape

Lathe or turning machine

20
Q

Drilling

A

Used to create a round hole using a rotating drill bit, usually with 2 cutting edges

Smaller diameter - faster
Only feed in one direction

21
Q

Milling

A

Rotating multiple cutting edge tool is moved across work yo cut a plane or straight surface

22
Q

Peripheral milling

A

Rotational axis is parallel yo the cutting surface

23
Q

End/face milling

A

Rotational axis is perpendicular to the cutting surface

24
Q

Cutting parameters in turning

A 
v = cutting speed (m/s)
ft = Feed rate (mm/min)
d = depth of cut (mm)

Feed per revolution -
f=(ft/N)(mm/rev)
N= rev/min

Material removal rate, MRR -
MRR = vfd (mm^3/s)

25
Q

Machine tool

A

A power driven machine that performs a machining operation

Digital Manufacturing Mec3030 (3 decks)

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