Chapter 16
Minor Diameter
Smallest diameter of the thread.
When cutting inch base odd number threads, the half-nuts are engaged at ____ on the thread dial.
any numbered line
Cutting threads involving one-half of a thread in each inch, such as 11 1/2, close the half-nuts at ____ on the thread dial.
any odd numbered line
When cutting sharp V-threads, a(n) ______________________________ gage is used for grinding the cutter and setting it in position.
center
Tailstock offset can be determined visually by measuring the distance between the ______________________________, or between the witness lines on the base of the tailstock.
center points
For all ____, close the half-nuts at any line on the thread dial.
even numbered threads
When cutting threads, ______________________________-profile inserts produce the best thread form and finish.
full
When cutting tapered threads to obtain a fluid- or gas-tight joint, the threading tool must be positioned ____.
in relation to the centerline of the taper
A taper is a section of material that ____.
increases in diameter at uniform rate
When cutting inch base even numbered threads, the half-nuts can be engaged at any ____ on the thread dial.
line
An accurate setover can be made by using the ______________________________ dial on the compound rest or cross slide or a dial indicator.
micrometer
The face of the thread dial rotates when the half-nuts are ____.
not engaged
For all ____, close the half-nuts at any numbered line on the thread dial.
odd numbered threads
A groove is cut at the point where the thread is to terminate and serves to ____.
permit a nut to run up to the end of the thread
On a single thread, the lead and ______________________________ are the same.
pitch
The ____ must be known to measure thread accuracy with a thread micrometer.
pitch diameter
The offset tailstock method for turning tapers is also known as the ______________________________ tailstock method.
setover
A(n) ______________________________ bar is a very accurately machined bar that is used in conjunction with gage blocks and sine tables to precisely measure angles.
sine
______________________________ threads are usually employed to transmit motion.
square
The most accurate method for cutting tapers is the ____.
taper attachment
Tapers can be turned with a compound rest if the ____.
taper is converted to degrees
Cutting threads involving one-fourth of a thread in each inch, such as 4 3/4, close the half-nut at ____ on the threading dial.
the original starting line
When cutting internal threads, tool infeed and removal from the cut are ____ when cutting external threads.
the reverse of those used
For all ____, close the half-nuts at any odd numbered line on the thread dial.
threads involving one-half of a thread in each inch
The most accurate way to offset the tailstock center is to ____.
use a dial indicator
Tailstock offset can be determined visually by measuring the distance between the center points, or between the ______________________________ on the base of the tailstock.
witness lines
The compound rest is set at ____ to cut sharp threads.
29°
On the ______________________________ thread, the top and bottom are flat, but the sides have a 29° included angle.
Acme
A taper is useful in machining technology because ____.
All of the above
Cutting left-hand threads requires ____.
All of the above
Screw threads have many uses, including ____.
All of the above
Always check the thread pitch after the first light cut with a ____.
Both B and C
External Thread
Cut on outside diameter of piece.
Internal thread
Cut on the inside of the piece.
Lead
Distance a nut will travel
Pitch
Distance from one point on a thread to a corresponding point on next thread.
Pitch Diameter
Imaginey diameter at the point where the widths of the thread and groove are equal.
Major Diameter
Largest diameter of the thread.
When cutting threads, ______________________________-profile inserts produce the best thread form and finish.
Partial
