Machinist Apprentice Test

What angle of bed decline do most CNC turning machines have to assist with chip management?*

With CNC turning machines and preparatory codes what does a "G01" represent?*

A. A code that allows the tool to dwell at a location.
B. It instructs the control to move rapidly to specific X and Z locations.
C. It is a linear interpolation feed rate code.
D. It directs the machine control to use to use workpiece coordinate values stored in memory.

What is zero suppression when dealing with CNC machines?*

A. It allows dimensions to be written without the zeros in front of the decimal point.
B. It is used to reduce the number of zeros in the full format dimensions.
C. It allows dimensions to be written without the zeros after the decimal point
D. Where eight digits are required for each dimension.

The most common type of feed drives used on CNC machines is the:*

What does odd parity mean in reference to CNC terminology?*

A. Each program character is represented in rows containing odd number holes.
B. The number of wires from the controller to the hardware is always odd.
C. The RAM is sectored off in odd divisions.
D. The hard drive is mathematically tuned to mathematical operations thst result in odd numbers.

When programming a multiple-start threading operation for a CNC machine, the shift amount is always equal to the ________ of the thread.*

Which of the following statement is true with respect to CNC multiple repetitive machining cycles?*

A. For boring or internal facing the tool must be located above the cored diameter.
B. Only absolute values may be used for co-ordinate positions.
C. The starting point should be as far away from the workpiece as possible to assist with tool movement.
D. For external turning and facing the tool must be located above and in front of the workpiece.

Which of the following is true with respect to a Preparatory (G) code?*

With CNC turning machines, the programmed speed for tapping is generally 25 to ____ % of that used for drilling.*

Which of the following CNC codes deals with a multiple repetitive, rough cutting cycle used for facing operations?*

Category: Machinist Apprentice Test