Exam 8: Computer Numerical Control

A G73 commands the ____ drilling cycle and uses only slight retracts.

____-codes prepare a machine to engage in a particular mode for machining.

____ systems use two or more workholding tooling plates that can be quickly and accurately interchanged on the machine's table.

A feature called ____ may be used instead so that the spindle RPM is automatically updated for the diameter being cut (the surface speed across the tool's cutting edge is always constant).

Programming is done largely with the aid of specialized computer software on a regular personal computer called ____ software.

When an indicator reads ____ throughout a full sweep, the spindle has been aligned with the centerline of the round feature.

The very first step in using specialized computer software is to make a drawing with ____ software.

The ____ knob is gripped by a power-actuated drawbar mechanism in the machine spindle to secure the mating tapers.

____ programming was developed to simplify the machine programming process.

CNC programming does not use north, south, east, or west to identify distance and direction, but instead a similar system called the ____ system.

____ holders are inexpensive, rugged, simple, and capable of transmitting a lot of torque, but there are a few disadvantages.

____ is the method whereby the machine control only accepts as much code as it can process at a time.

____ tools are small motorized spindles that enable a turning machine to perform light-duty milling and to perform hole-work such as drilling, tapping, and reaming off-center and cross-ways.

Some machines have a more accurate method of mating the spindle RPM and feed rate throughout the entire tapping cycle, which is called ____ tapping.

Often a part has a unique shape and needs precise location along with a highly secure clamping system, for which a custom ____ can be used.