316 Flashcards
when you turn a workpiece in a lathe the carriage must be connected to the
feed rod
the two dimensions that describe lathe capacity are the center distance and the
swing
by what means can you hold a workpiece for turning facing drilling and boring
mount it between centers
the inside surface of what type of chuck is designed to fit the stock it holds
collet
the purpose of a steady rest or center rest is to support the
end of a long workpiece
you can mount eccentric or irregularly shaped workpieces in a chuck or
on a faceplate
the device that moves with a cutting tool to keep workpieces straight is the ___
follower
what is the suggested speed for finish cutting mild steel
125 sfpm
the smoothness of a finishing operation depends on the __ and on the ___
tool sharpness, Feed rate
the process of giving a drilled hole in a fine finish with a single point tools is
boring
the principle parts of a twist drill are the body shank and
point
which of the following materials requires the highest drilling speed in sfpm
wood
to change the speed in surface feet per minute to inches per minute you must
multiply by 12
to enlarge a hole to fit an oversize bearing you should use a
boring tool
on a vertial lathe or boring machine the ___ advances the boring tool into the work
overhead ram
the metal between flutes of a reamer is called the
land
when you need a very accurate hole what is the best method to use
hand reaming
what type of reamer is held on an arbor in a machine
shell
you can remove burrs on the cutting edges or teeth of reamers with an
oilstone
a countersink cuts tapered enlargements at hole openings to accommodate
screw heads
the most common form of precision threads for moderate power transmission needs is the ___ thread
acme
cold forming or fluteless taps are used to tap what kind of material
ductile
in a dry seal the tiny tunnel between the pipe and fitting is filled with
flattened metal
a ideal tap for most tapping operations is the ___ tap
spiral point or gun
to break a long chip in a tapping operation you should
reverse the tap half a turn
