Mech Test 4

Tapered end mills are used for ____

Finish cutting on molds to produce a desired angle

The numeric control programming language used for computer-aided manufacturing (CAM) is called

G-code

Which of the following statements is false regarding the thread rolling process?

Thread rolling is a hot forming process.

Identify the best type of cutter that would be used for each of the following milling operations in a vertical milling machine. (some answers maybe used more than once) producing a groove with a 1/8" diameter concave bottom

ball end mill

In mass-production opeations, a milling machine with the capability of making heavy cuts, having 1,2, or 3 spindles, and no vertical table movement is often used. This describes what type of milling machine?

bed milling machine

The process for machining threads which requires a CNC machining center capable of circular interpolation is ___.

thread milling

The creep feed grinding process is used to grind deep slots with straight parallel sides into parts.

true

The filing process is used to remove small amounts of material from a part.

true

The use of a spiral fluted tap is to force chips up (rearward) and out of a hole during the threading process.

true

The honing process is not used for which of the following:

truing of holes

Match the axis movement with the knee-and-column milling component. The knee provides ____ movement on the column ways.

vertical (z-axis)

End milling, drilling, and boring is typically performed using what type of knee-and-column milling machine?

vertical milling machine

Which of the following is the most common type of surface grinder machine?

Horizontal spindle, reciprocating table

What is the type of mill cutter used to machine the slots for bolt heads in base plates, bed plates, and work tables ?

T-slot milling cutter

A dividing head is an accessory used with a milling machine primarily to provide what operation?

accurate rotation of the work piece through any desired arc of rotation

Which is the most frequently used delivery system for abrasives?

bonded

The teeth of an end mill cutter are located on the ___.

circumference and the face of the cutter

What type of grinding machining would be used for the grinding of camshafts and crankshafts?

cylindrical external

Attrition refers to the material property regarding the wearing action of the abrasive, resulting in _____ edges and _____ of the abrasive grit.

dull, flattening

Lapping is a surface finishing process using fine abrasive particles ____ into a soft material.

embedded

Identify the best type of cutter that would be used for each of the following milling operations in a vertical milling machine. (some answers maybe used more than once) Deep slots with straight side walls

end mill

Centerless grinding is a process that must be performed manually by the machinist.

false

Centerless grinding requires a high degree of skill to operate the machine.

false

Centerless grinding requires that small grinding wheels be used in the grinding process.

false

For grinding wheels, glazing is the process to clean the grinding wheel and sharpen the abrasive particles.

false

Identify the best type of cutter that would be used for each of the following milling operations in a vertical milling machine. (some answers maybe used more than once) bearing pocket in gearbox housing

form cutter

Friability refers to the ability of the abrasive material to ____.

fracture, producing new, sharp edges

Which of the following is NOT a type of broach construction?

insert tooth

Match the axis movement with the knee-and-column milling component. The table has ___ movement on the saddle ways.

longitudinal (x-axis)

In the abrasive machining process, _____ edges are cutting simultaneously resulting in a(n) _____ surface finish.

many, excellent

For the down milling process, complete the statements with the answers supplied The chip thickness is a ___ at the beginning of the chip formation.

maximum

The milling process uses _____ and involves ______ cutting.

multi-tooth cutter, interrupted

In the slab milling process, the finished surface is _____ to the axis of rotation of the cutter and is normally performed on a ____ spindle milling machine.

parallel, horizontal

Which of the following free-abrasive machining processes is safe in the event of accidental skin contact?

ultrasonic

For the down milling process, complete the statements with the answers supplied In slab milling operations, the direction of the cutting force is ____.

vertically down

Which type of surface grinding machine is often made to automatically load/unload parts?

Vertical spindle, rotary table

What is the most common material used for abrasives?

aluminum oxide

Identify the best type of cutter that would be used for each of the following milling operations in a vertical milling machine. (some answers maybe used more than once) Producing a flat-bottom groove in the surface of a part

end mill

Identify the best type of cutter that would be used for each of the following milling operations in a vertical milling machine. (some answers maybe used more than once) producing a pocket in a workpiece

end mill

Identify the best type of cutter that would be used for each of the following milling operations in a vertical milling machine. (some answers maybe used more than once) finishing the top surface of a work piece

face mill

For the down milling process, complete the statements with the answers supplied The chip thickness is a ___ at the end of the chip formation as the tool exits the work piece.

minumum

Threads are frequently produced in _____ products by casting or molding where excellent surface finish can be realized.

plastic

The blade width of the saw blade determines the minimum ___ that can be cut with a bandsaw blade.

radius

The structure of a grinding wheel refers to ___.

the spacing of the abrasive grit in the wheel

The grade of a grinding wheel refers to ____.

the strength of the bonds between the abrasive grits

Match the axis movement with the knee-and-column milling component. The saddle provides ___ movement on the knee ways

transverse (y-axis)

In centerless grinding, the work piece must be round and not include flats or keyways.

true

More flat surfaces are produced by the milling process than any orher machining process.

true

The conversational controller does not require programming the machine.

true

What is the milling of two parallel surfaces with side cutters called ?

straddle milling

The range of rise per tooth for surface broaching is

0.003 to 0.006

The milling process will produce a surface finish with a surface roughness measurement of 60 to ___ microinches.

150

The milling machine was invented in approximately 1816 by ___.

Simeon North

The depth of cut in creep feed grinding is 1,000 to 10,000 times less than conventional grinding processes.

false

The milling process is characterized by low MRR, good to excellent finished surface (low surface roughness), and is used in mass-production, tool and die work, and prototype work.

false

Milling cutters with carbide and ceramic cutting edges have a ____ rake angle and can be operated at ____ times faster than a HSS cutter.

negative, 3 to 5

For the down milling process, complete the statements with the answers supplied The mill cutter rotates ____ the direction of feed.

with

What type of milling cutter is used to mill a semi-circular keyway in a shaft used in power transmission equipment?

woodruff keyseat milling cutter