316 Flashcards
The process of giving a drilled hole a fine finish with a single-point tool is
Boring
A countersink cuts tapered enlargements at hole openings to accommodate
Screw heads
The two dimensions that describe lathe capacity are the center distance and the
Swing
To break a long chip in a tapping operation, you should
Reverse the tap half a turn
What type of reamer is held on an arbor in a machine?
Shell
An ideal tap for most tapping operations is the _____ tap
Spiral-point or gun
By what means can you hold a workpiece for turning, facing, drilling, and boring?
Hold it in a chuck
The metal between the flutes of a reamer is called the
Land
Which of the following materials requires the highest drilling speed in sfpm?
Wood
What is the suggested speed for finish cutting mild steel?
125 sfpm
The purpose of a steady rest or center rest is to support the
End of a long workpiece
The smoothness of a finishing operation depends on the ______ and on the ______
Tool sharpness……. feed rate
The device that moves with a cutting tool to keep long workpieces straight is the _____ rest
Follower
To change the speed in surface feet per minute to inches per minute, you must
Multiply it by 12
to enlarge a hole to fit an oversize bearing, you should use a
Boring tool
You can mount eccentric or irregularly shaped workpieces in a chuck or
On a faceplate
When you need a very accurate hole, what is the best method to use?
Hand reaming
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
When you turn a workpiece in a lathe, the carriage must be connected to the
Feed rod
The inside surface of what type of chuck is shaped to fit the stock it holds?
Collet
The principle parts of a twist drill are the body, shank, and
Point
You can remove burrs on the cutting edges or teeth of reamers with a(n)
Oilstone
On a vertical lathe or boring machine, the _____ advances the boring tool into the work.
Overhead ram
