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PLTW CIM Finals 2 questions and answers verified 2024
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PLTW CIM Finals 2 questions and answers verified 2024
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PLTW CIM Finals 2Absolute Encoder - correct answer ✔An optical encoder that gives an exact
position even in the event of a power failure.
Molding - correct answer ✔The process of manufacturing by shaping pliable
raw material using a rigid frame or model called a mold. Plastics are a popular
type of material used in this process.
Casting - correct answer ✔A manufacturing process by which a molten
material such as metal or plastic is introduced into a mold, allowed to solidify
within the mold, and then ejected or broken out to make a fabricated part.
Separating - correct answer ✔Involves the removal of material.
Also known as the subtractive process.
Chip forming processes - correct answer ✔A type of separation process
where a chip is formed. Good examples of this include cutting with a saw,
drilling with a drill, or machining with a mill or lathe.
Non Chip forming processes - correct answer ✔A type of separation process
where no chips are produced. Good examples of this would be stamping or
shearing.
Joining - correct answer ✔Also referred to as the additive process.
Materials are added in layers to build a finished part.
Forming - correct answer ✔Using force to cause a material to permanently
take shape.
,Changes some of the material properties.
Finishing - correct answer ✔May be completed before or after assembly.
Used primally to protect products from various conditions.
Also used to enhance a product's apperance.
Cleaning - correct answer ✔Involves the process of removing unwanted
material from workpieces.
Coating - correct answer ✔Involves a material being added to a work piece.
Assembling - correct answer ✔Putting parts together.
Conditioning - correct answer ✔Refers to changing the physical and
machenical properties of a material.
Absolute - correct answer ✔System in which positions are given with respect
to a fixed point, usually the origin.
Address Character - correct answer ✔A letter used in G & M code
programming to designate a class of functions.
Bottom Height - correct answer ✔The final machining height/depth and the
lowest depth that the tool descends into the stock.
Block - correct answer ✔A single line of code in an NC part program.
, Bench Grinder - correct answer ✔A grinding machine that has been mounted
to a bench or table. The grinding wheels mount directly onto the motor shaft.
Normally one wheel is coarse, for roughing, and the other is fine, for finishing.
Computer Aided Manufacturing (CAM) - correct answer ✔The use of
computers in converting engineering designs into finished products.
Computer Numerical Control (CNC) - correct answer ✔A numerical control
method in which one computer is linked with one machine tool to perform NC
functions.
Clearance Fit - correct answer ✔Limits the size of mating parts so that a
clearance always results when mating parts are assembled.
Clearance Height - correct answer ✔The first height the tool rapids to on its
way to the start of the tool path.is the z-axis plane above which no stock is
expected.
The Retract height sets the height that the tool moves up to before the next
cutting pass.
Climb Milling - correct answer ✔The milling tool advances through the
material so that the cutting flutes engage the material at maximum thickness
and then decrease to zero thickness.
Conventional Milling - correct answer ✔The milling tool advances through
the material so that the cutting flutes engage the material at zero thickness
and increase to the maximum thickness.
Cutting Speed - correct answer ✔The rate of a tool measured in surface feet
per minute or surface inches per minute
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