A lathe machine is primarily used for turning operations, where the workpiece is rotated while a cutting tool shapes it. This is ideal for creating cylindrical or symmetrical parts like shafts, rods, or bushings.
What type of motion does a milling machine use to cut material?
A Oscillating cutter
B Vibrating motion
C Rotating cutter
D Linear motion
A milling machine uses a rotating cutter to remove material from a workpiece. The cutter moves along different axes to create flat surfaces, slots, and complex shapes, making it ideal for precision machining.
What does CNC stand for in machining?
A Cutting Numerical Control
B Computer Numerical Control
C Centralized Numerical Control
D Computerized Navigational Control
CNC stands for Computer Numerical Control, which refers to machines that are controlled by a computer to automate machining processes such as milling, turning, and drilling. It improves precision, efficiency, and repeatability in manufacturing.
What is the function of a tool holder on a lathe machine?
A Cool the tool
B Rotate the workpiece
C Measure workpiece dimensions
D Secure the cutting tool
The tool holder on a lathe machine is used to securely hold the cutting tool in place during turning operations. It ensures the tool is stable, allowing for accurate and consistent cuts on the workpiece.
What type of milling machine operation uses a rotating cutter to produce flat surfaces?
A Grinding
B End milling
C Face milling
D Drilling
Face milling involves using a rotating cutter to produce flat surfaces on a workpiece. It is primarily used for removing large amounts of material and creating smooth, level surfaces. End milling is used for different tasks, like creating slots.
Which of the following is a common cutting tool used in milling?
A End mill
B Tapping tool
C Drill bit
D Saw blade
An end mill is a type of cutting tool used in milling operations. It has cutting edges on the end and sides, making it suitable for a variety of operations, including cutting slots, grooves, and contours.
What is the purpose of a chuck in a lathe machine?
A Rotate the tool
B Hold the tool
C Hold the workpiece
D Cool the workpiece
The chuck on a lathe machine is used to hold the workpiece securely while it rotates. It allows for precise turning, shaping, and cutting of the workpiece, and is typically adjustable to fit different sizes of workpieces.
Which operation is used to reduce the diameter of a workpiece on a lathe?
A Boring
B Facing
C Drilling
D Turning
Turning is the operation used to reduce the diameter of a workpiece on a lathe. The cutting tool removes material from the outer surface as the workpiece rotates, allowing for accurate sizing of cylindrical parts.
What does the “C” in CNC machines typically control?
A Coolant flow
B Computerized programming
C Control axis
D Cutting speed
The “C” in CNC stands for Control, as CNC machines use computer programming to control the movement of the tool along multiple axes (X, Y, and Z) for accurate and precise machining of parts.
Which milling machine operation creates grooves or channels?
A Tapping
B Slot milling
C Face milling
D Drilling
Slot milling is a process where a rotating cutter creates grooves or channels in a workpiece. It is typically used to create narrow slots or keyways. Face milling, on the other hand, creates flat surfaces.
What is the primary function of a CNC lathe?
A Turning materials
B Milling surfaces
C Drilling holes
D Cutting threads
A CNC lathe is primarily used for turning materials, where the workpiece is rotated while a cutting tool shapes it. CNC automation ensures precision and repeatability, making it suitable for high-volume production of cylindrical parts.
Which of the following tools is primarily used for cutting threads?
A Drill bit
B Tapping tool
C End mill
D Reamer
A tapping tool is specifically used for cutting internal threads inside holes. It helps create threads in which bolts or screws can be fitted. End mills, drill bits, and reamers are used for other cutting operations.
What is the purpose of a tailstock on a lathe machine?
A Hold the tool
B Measure workpiece
C Cool the tool
D Support the workpiece
The tailstock on a lathe machine provides support for the end of the workpiece opposite the chuck. It helps stabilize the workpiece during turning operations and can be adjusted to accommodate different lengths of materials.
Which type of cutter is most commonly used in face milling?
A Slot drill
B Face mill
C Slot drill
D Reamer
A face mill is commonly used in face milling operations to create flat surfaces. It has multiple cutting edges on the face of the tool, allowing it to remove large amounts of material and produce a smooth, even surface.
Which operation is used to create a cylindrical hole in a workpiece?
A Drilling
B Tapping
C Boring
D Turning
Drilling is the process used to create cylindrical holes in a workpiece. It involves using a rotating drill bit to remove material and create a hole. Boring is similar but is used to enlarge existing holes with greater accuracy.