Working of Radial Drilling Machine | What Is the Radial Drilling Machine | Parts of Radial Drilling Machine

Working of Radial Drilling Machine:

  • Initially, when a power supply is given, the spindle rotates, which is driven by the motor. Since the radial arm can move up and down in the column, the radial arm is adjusted according to the operation and height of the workpiece.
  • The spindle is attached to the chuck, and the drill bit is placed in the jaw of the chuck.
  • The head of the drilling machine is also adjusted so that the tool is in the correct position to make a hole in the workpiece.
  • After that, a suitable feed is given, and then the drill bit easily moves into the workpiece.the drive mechanism used in the drilling machine is the rack and pinion mechanism.
  • In rack and pinion mechanisms, gears are used to convert rotation to linear motion.
  • When the handwheel is rotated, the pinion that is attached to the rack also rotates, which converts the rotation to linear motion and therefore moves towards the drill bit workpiece.

Also, Read: What Is Single Plate Clutch | Construction of Single Plate Clutch | Working of Single Plate Clutch

What Is the Radial Drilling Machine?

Radial Drilling Machine

  • Radial drilling machines are used to drill mediums to large and heavy workpieces. these machines are used to drill holes in a given radial distance.
  • It is mainly used when the component’s size is larges in height.
  • Radial drilling machines are primarily designed for drilling holes in heavy jobs or workpieces.
  • Since heavy work cannot move much, the radial drilling machine is made in such a way that the machine tool can move any part of heavy work without doing much work.

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Parts of Radial Drilling Machine:

Radial Drilling Machine

Part nine of the radial drilling machine:-

  1. Base.
  2. Column.
  3. Table.
  4. Radial Arm.
  5. Drill Head.
  6. Spindle.
  7. Motor.
  8. Chuck.
  9. Tool or Drill Bit.

#1. Base-

  • This is the bottommost part of the radial drilling machine. It is made of cast iron because cast iron has high corrosive strength.
  • The base is used to support the assembly of parts on it. It also absorbs vibrations and shocks induced by machine parts.

#2. Column-

  • There is a column at one end of the base. It is a vertical column that acts as a support to rotate the radial arm in 360 degrees.

#3. Table-

  • It is placed above the column. It is provided with a slot to mount the workpiece directly to its face. It is usually round or rectangular in shape.

#4. Radial Arm-

  • This is the part that is attached to the column. This part can rotate 360 ​​degrees around the column. The face of the radial arm is accurately machined, and the head slides over it. This arm moves up and down the column. In larger machines, hydraulics are used to move the arm up and down.

#5. Drill Head-

  • The drill head is mounted on the radial arm and drives the drill spindle.
    It engages all mechanisms to drive and feed the drill at different speeds.

#6. Spindle-

  • It is a part of the drilling machine that carries the equipment of the drilling machine and is responsible for its rotation.

#7. Motor-

  • The motor is present at the top of the drill head, which drives the horizontal axis.

#8. Chuck-

  • Chick is present below the axis. It is used to hold the drill bit in its place.

#9. Tool or Drill Bit-

  • Drill bits are used to drill holes in the workpiece. This is the part that rotates and enters the workpiece, creating holes.

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Construction of Radial Drilling Machine:

  • The bottommost part of a radial drilling machine is usually made of cast iron because cast iron has high corrosive strength.
  • The column is present above the base. It is cylindrical in shape. The radial arm moves up and down the column and can also rotate in the columns.
  • The tables are placed above the base where the workpiece can be placed for the drilling process.
  • The radial arm has a drill head. Various parts like a spindle, chuck, and motor are present in this drill head for rotation of the drill bit.
  • The motor is present above the head, which rotates the axle.
  • The spindle is attached to the drill heads and is present below the chuck axis. In the chuck, the drill bits are fixed, which is used to make holes in the workpiece and feed it into the workpiece.

Also, Read: What Is Pipe Joint? | Types of Pipe Joints

Applications of Radial Drilling Machine:

  • The basic application of a drilling machine is to make holes of various shapes and sizes on any workpiece.
  • There are many types of drill machines available in the market for performing various operations. Hand drills are used for screwing and fastening.
  • Hammer drills are used by carpenters to drill and fix wooden parts. Where power supply is not available, a cordless drill is useful.
  • Milling cum drilling machines are broadly adopted in industries where mixing and grinding of solids and liquids are required.
  • Pillar drill machines (also referred to as drill presses) are used in commercial applications where bulk production of drilled materials in various shapes and sizes is required, such as drill metal sheets, plastic, wood, glass, etc.
  • The capacity of the press depends on it. Several factors, namely column diameter, spindle nose, spindle travel, spindle speed, and electronic motor used in the machine.


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