A lathe machine is a tool that rotates a workpiece about an axis and uses a tool to create symmetrical objects. It can perform operations like turning, facing, cutting, knurling, drilling, and parting. The main parts of a lathe include the bed, headstock, spindle, tailstock, carriage, tool post, chuck, lead screw, and legs. Lathe machines are used for wood turning, metal working, metal spinning, and glass working. The turning process reduces the diameter of the workpiece and involves parameters like spindle speed, feed rate, depth of cut, and cutting speed.

1. Lathe Machine
Dr. Saurabh Sangal
Assistant Professor
Mechanical Engineering
SRMS CET,Bareilly

2. Lathe Machine
• A Lathe is a machine tool that rotates a work piece about an axis of rotation and tool
applied to the workpiece to create an object with symmetry about that axis.
• Performs various operations such as:
 Turning
 Facing
 Cutting
 Knurling
 Drilling
 Parting

3. Parts of Lathe machine
• Bed
• Head stock
• Spindle
• Tail stock
• Carriage,
• Tool post
• Chuck
• Lead screw
• Legs
• Apron
• chips pan

4. Uses
• Wood turning
• Metal working
• Metal spinning
• Glass working

5. Turning
• Turning process is carried out to reduce the diameter of workpiece.
• The schematic diagram of turning process (Black board)
 Parameters:
i. Spindle speed
ii. Feed rate
iii. Depth of cut
iv. Cutting speed

6. Cont.
 Spindle speed (N) is the rotational speed of the cutting tool. It is usually measured in
revolutions RPM.
 Feed Rate is defined as the velocity at which the tool is advanced against the
workpiece.
 Depth of cut is the total amount of metal removed per pass of the cutting tool. It is
expressed in mm.
 Cutting speed is the peripheral velocity of tool is considered as the cutting velocity.
It is Measured in mm/minute.

7. Thank You....