Threading

1. What is the main purpose of threading in CNC turning?

• A) To reduce the material's diameter

• B) To create a helical groove on a cylindrical workpiece

• C) To polish the workpiece surface

• D) To drill holes in the workpiece

2. What does threading achieve in a CNC turning operation?

• A) Smoothing the surface of the part

• B) Creating internal or external threads for fasteners

• C) Increasing the diameter of the workpiece

• D) Cutting a slot along the workpiece

3. Which tool is used for threading in CNC turning?

• A) Drill bit

• B) Parting tool

• C) Threading insert

• D) Boring bar

4. What is the function of the threading insert's tip radius?

• A) To reduce tool wear and improve thread quality

• B) To increase the depth of cut

• C) To make the threading operation faster

• D) To create a wider thread

5. Why is the pitch of the thread important in CNC threading?

• A) It determines the width of the thread

• B) It defines the number of threads per inch or millimeter

• C) It sets the thread's depth

• D) It controls the thread’s start point

6. What is the common thread form used in CNC turning?

• A) Square thread

• B) Acme thread

• C) Metric thread

• D) Buttress thread

7. What should be checked first if the threads produced are not fitting correctly?

• A) Tool tip radius

• B) Thread pitch

• C) Coolant flow

• D) Spindle speed

8. What type of threading operation is performed to create threads on the outside of a cylindrical workpiece?

• A) Internal threading

• B) External threading

• C) Taper threading

• D) Cross threading

9. Which threading parameter specifies how tight or loose a thread will fit with a corresponding nut or bolt?

• A) Thread angle

• B) Thread class or tolerance

• C) Thread length

• D) Thread material

10. Which component in the CNC machine helps maintain the correct pitch during threading?

• A) Tool turret

• B) Tailstock

• C) Leadscrew

• D) Coolant system