CNC Unit 1- CNC Basics
Questions & Actual Complete
Solutions
Automatic Tool Changer - correct answer ✔✔A device used in some CNC machines to
automatically load, unload, and store tools.
Absolute positioning system - correct answer ✔✔A referencing method used with coordinate
systems in which the coordinates of all positions are referenced from the origin (X0, Y0, Z0).
Ball screw - correct answer ✔✔A screw and nut assembly with steel balls in place of threads
which can achieve high efficiency and zero backlash in computerized numerical control
machines.
Block - correct answer ✔✔In the word address programming system, a group of program words
that appear on the same line and are to be executed at the same time.
Cartesian coordinate system - correct answer ✔✔Two- or three-dimensional systems that use X
and Y or X, Y, and Z values for location.
Circular interpolation - correct answer ✔✔Commanded by the G-codes G2 or G3, a type of
motion that causes the cutter's path to travel in an arc so that CNC machines can cut full or
partial circles.
Conversational programming - correct answer ✔✔A special type of MCU function developed to
simplify the machine programming process in which the operator selects the intended type of
machining operation from an on-screen menu and the machine prompts the programmer with a
series of questions.
Questions & Actual Complete
Solutions
Automatic Tool Changer - correct answer ✔✔A device used in some CNC machines to
automatically load, unload, and store tools.
Absolute positioning system - correct answer ✔✔A referencing method used with coordinate
systems in which the coordinates of all positions are referenced from the origin (X0, Y0, Z0).
Ball screw - correct answer ✔✔A screw and nut assembly with steel balls in place of threads
which can achieve high efficiency and zero backlash in computerized numerical control
machines.
Block - correct answer ✔✔In the word address programming system, a group of program words
that appear on the same line and are to be executed at the same time.
Cartesian coordinate system - correct answer ✔✔Two- or three-dimensional systems that use X
and Y or X, Y, and Z values for location.
Circular interpolation - correct answer ✔✔Commanded by the G-codes G2 or G3, a type of
motion that causes the cutter's path to travel in an arc so that CNC machines can cut full or
partial circles.
Conversational programming - correct answer ✔✔A special type of MCU function developed to
simplify the machine programming process in which the operator selects the intended type of
machining operation from an on-screen menu and the machine prompts the programmer with a
series of questions.
