Types of Raidal Drilling Machine

Radial Drilling Machine

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. 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.

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.

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.

Construction of Radial Drilling Machine:

• 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.

  
  

• 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)

  
  

• 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. the workpiece.

  
  

• Drive Head: It generally consists of two levers which by varying can increase or decrease the speed of chuck.

  
  

• 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.