CNC MIDTERM EXAM QUESTIONS
& CORRECT ANSWERS
What does feed measure on a CNC Swiss-type lathe? Feed measures the:
a.
Distance the cutting tool travels before reaching the workpiece.
b.
Distance the cutting tool penetrates the workpiece.
c.
Rate at which the workpiece moves into the cutting tool.
d.
Rate at which the spindle and sub-spindle rotate the workpiece. - correct answer ✔✔c.
Rate at which the workpiece moves into the cutting tool.
Which must be set first?
a.
Geometry Offset
b.
Work Offset
c.
Wear Offset
d.
Radius Offset - correct answer ✔✔b.
Work Offset
,Which of the following is a benefit offered by the guide bushing on a CNC Swiss-type lathe? The
guide bushing helps eliminate:
a.
Deflection.
b.
Chips.
c.
Changeover.
d.
Rigidity. - correct answer ✔✔a.
Deflection.
What is the purpose of homing?
a.
It's required on most machines upon power-up in order for the machine to recall its positioning.
b.
It's required on most machines at the end of each program for the machine to recall its
positioning.
c.
It"s required on most machines after an offset adjustment. - correct answer ✔✔a.
It's required on most machines upon power-up in order for the machine to recall its positioning.
What is the process called where a program is sent to a machine one block at a time as the
machine executes the program?
a.
MDI
b.
, Block Skip
c.
Optional Stop.
d.
Single Block - correct answer ✔✔d.
Single Block
Which is an example of an outer-diameter (OD) cutting operation that can be performed on a
CNC Swiss-type lathe?
a.
Facing
b.
Boring
.c
Drilling
d.
Reaming - correct answer ✔✔a.
Facing
What machine mode is generally used to manually move the axes during setup?
a.
Edit
b.
Jog
c.
MDI
& CORRECT ANSWERS
What does feed measure on a CNC Swiss-type lathe? Feed measures the:
a.
Distance the cutting tool travels before reaching the workpiece.
b.
Distance the cutting tool penetrates the workpiece.
c.
Rate at which the workpiece moves into the cutting tool.
d.
Rate at which the spindle and sub-spindle rotate the workpiece. - correct answer ✔✔c.
Rate at which the workpiece moves into the cutting tool.
Which must be set first?
a.
Geometry Offset
b.
Work Offset
c.
Wear Offset
d.
Radius Offset - correct answer ✔✔b.
Work Offset
,Which of the following is a benefit offered by the guide bushing on a CNC Swiss-type lathe? The
guide bushing helps eliminate:
a.
Deflection.
b.
Chips.
c.
Changeover.
d.
Rigidity. - correct answer ✔✔a.
Deflection.
What is the purpose of homing?
a.
It's required on most machines upon power-up in order for the machine to recall its positioning.
b.
It's required on most machines at the end of each program for the machine to recall its
positioning.
c.
It"s required on most machines after an offset adjustment. - correct answer ✔✔a.
It's required on most machines upon power-up in order for the machine to recall its positioning.
What is the process called where a program is sent to a machine one block at a time as the
machine executes the program?
a.
MDI
b.
, Block Skip
c.
Optional Stop.
d.
Single Block - correct answer ✔✔d.
Single Block
Which is an example of an outer-diameter (OD) cutting operation that can be performed on a
CNC Swiss-type lathe?
a.
Facing
b.
Boring
.c
Drilling
d.
Reaming - correct answer ✔✔a.
Facing
What machine mode is generally used to manually move the axes during setup?
a.
Edit
b.
Jog
c.
MDI
