This document describes a lathe machine used in mechanical engineering. It discusses the history and purpose of lathes, common operations like facing, tapering, and parallel turning. Safety precautions are outlined. Dimensions and specifications provided for a mini wood lathe include a 3ft base, 180W motor, and RPM calculation. The objectives are to use local materials, reduce costs, encourage indigenous technology, and increase productivity.

2. Lathe machine
Department of Mechanical Engineering

3. Introduction
The lathe is a machine tool which held and
rotate the work piece( metal,woodand other
materials) on its axis to perform various
operations such as cutting ,kurling,drilling and
deformation with a tool bit that are applied to
work piece to create an object which has
symmetry about an axis of rotation.

4. History
The lathe is an ancient tool . The first fully
documented all metal slide rest lathe was
invented by Jacques de Vaucanson around
1751. The lathe was very important to the
industrial revaluation. It is known as the
mother of machine tools.

5. Purpose
Wood turning lathes are typically used to
shape wood into cylindrical shape.
Objects made on lathe includes furniture
legs,lamp post,baseball bat,bowls etc
Wood lathe can take many forms
depending on the primary turning
operation.

6. Operations
The general operations done with the lathe are
Facing
Tapering
Parallel turning
Parting

7. Facing
This is usually the first step of any lathe operation
on lathe machine. The metal is cut from the end to
make it fit in the right angle of the axis and
remove the marks.

8. Tapering
Tapering is to cut the metal to nearly a
cone shape with the help of the compound
slide.
 This is something in between parallel
turning and facing off.
If one is willing to change the angle then
they can adjust the compound slide as they
like

9. Parallel Turning
This operation is adopted in order to cut the
metal Parallel to the axis.
Parallel turning is done to decrease the diameter
of the metal.

10. Parting
The part is removed so that it faces the ends, for
this the parting tool is involved in slowly to
perform the operation
To make cut deeper the parting tool is pulled out
and transferred to the slide for cut and to prevent
the tool from breaking

11. Lathe cutting tools
There are several lathe cutting tools
Carbide tools
Grooving tools
Cur off blade
Parting blades
Boring blades
Slide tool

12. 0bjectives
The main objectives of the project are
To use available local materials in fabrication.
To achieve a reduction in the cost of production of the machine.
To reduce labour cost and time spend on using hand tools for wood
dressing.
To create awareness for and encouragement of indigenous
technology.
Increase productivity band creativity.

13. Dimensions and specifications
Below are the dimensions and specifications of mini wood lathe machine
Base length 3ft
Base width 1ft
Base height 3 inches
Chuck column height 10 inches from base top
Tail stock die 14mm and it is in centre of base.
Motor 180 watt
Bearing 28mm
Pully inner die 16mm
Tail stock height 7 inches

14. Project Drawing

15. Spindle speed
The exact RPM is not always needed, a close
approximation will work
RPM= speed/pi* diameter
Feed rate
FR=RPM* T* Diameter

16. Safety precautions
Keep a balance stance at a lathe so you do not
fall or lean against the centers, workpiece or
other moving parts.
Do not overreach or use excessive force ton
perform any machine operation.
Turn off the lathe before cleaning.
Use a brush to remove chips or debris, do not
use your hands.

17. Working Vedio