Radial Drilling Machine-Parts, Working,Advantages,disadvantages,applications was explained in a detailed way. For more information, Visit https://mechanicalstudents.com/radial-drilling-machine-working-principle-construction-mechanism-types/

1. Radial Drilling
Machine

2. ● Drilling Machine is to make circular holes on the components with the help of Drill bits.
● But, the purpose of the Radial Drilling Machine is used to drill the holes in the given
radial distance and this will be used, when the component size is large in terms of height.
● When the component is large, it cannot fit its structure in the Machine vice.

3. ● Therefore, the component has to be placed on the ground and the Radial arm of the
drilling machine has to be rotated w.r.t the component to do the operation.
● The Angle of a Drill bit is 118 Degrees.

4. Working Principle of Radial Drilling
Machine:
● When the power supply is given, the spindle rotates which was in conjunction with the
motor. The Radial arm is adjusted w.r.t the type of operation and height of the workpiece.
● The spindle is connected to the chuck and the drill bit is placed in between the jaws of the
chuck. The Drill head is adjusted on to the workpiece and a suitable feed is given.
● Then the drill bit drives into the workpiece very easily.

5. Drive Mechanism: Rack and Pinion
Mechanism
When the hand wheel is rotated, then the Pinion which is attached to the rack
also rotates which can convert the rotary motion to the linear motion and the
driving mechanism is called as Rack and Pinion mechanism.

7. Construction of Radial Drilling Machine
The setup essentially consists of
1. Base
2. Column
3. Radial Arm
4. Motor for elevating the arm
5. Elevating screw
6. Guideways
7. Motor for driving drill spindle
8. Drill head
9. Drill spindle
10. Table

8. ● Base: It is made up of Cast Iron which possesses high compressive strength and
good wear resistance. The base is used to support the assembly of parts on it
and also absorbs the vibrations induced by the machine parts.
● Column: It is exactly placed at one end of a bed which can act as a support for
rotating the radial arm in 360 degrees.

9. ● Radial Arm: It is the arm which is connected to Column. The Drill head is
slided from one end to another end by the guideways.
● Motor: It is placed on the drill head for driving the work unit(Spindle of
the Drill bit)

10. ● Table: The machine vice is connected to a swivel table which can hold the
workpiece for further operation.
● Flywheel or Hand wheel: It is connected to the spindle arrangement
which is used to move up and down w.r.t. the workpiece.
● Drive Head: It generally consists of two levers which by varying can
increase or decrease the speed of chuck.

11. ● Chuck: One end of the chuck is connected to the spindle arrangement and
another end is connected to the drill bit(tool).
● Tool-Drill bit: The drill bit is used to drill the holes on the specimens.
● Workpiece: It has to be fixed in the machine vice provided on the table.
This is the explanation of Radial Drilling Machine with its Principle, working, the
mechanism involved, Construction and types of Drilling Machine are presented in a
detailed manner.

12. For more information, visit
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