Drilling Machine Types

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Types of Drilling Machine:

Following are the 8 different types of drilling machines:

1. Portable drilling machine
2. Sensitive drilling machine
i. Bench mounting sensitive drilling machine
ii. Floor-column drilling machine
3. Upright drilling machine
i. Round column upright drilling machine
ii. Box column upright drilling machine
4. Radial drilling machine
i. Plain drilling machine
ii. Universal drilling machine
iii. Semi-universal drilling machine
5. Gang drilling machine
6. Multiple spindle machine
7. Automatic drilling machine
8. Deep hole drilling machine
i. Vertical deep hole drilling machine
ii. Horizontal deep hole drilling machine



1. Portable Drilling Machine:

 Portable Drilling machine


This sorts of drilling machines are commonly utilized in all the workshop. Used to drill small sized holes. It is operated by holding in a hand. The workpiece where the opening is to be drilled is held during a vice.

2. Sensitive Drilling Machine:

 Sensitive Drilling Machine


This sorts of drilling machine wont to drill small holes at high speeds in lighter jobs or workpieces. The machine could also be mounted on the bench or floor & the drilling work is started with the drill fed into the workpiece by purely hand control. Hand-feed permits the operator to sense the progress of the drill into the workpiece, so that if there is any drill worn out or jams it may be released immediately to prevent the drill bit from breaking. Since the operator senses the cutting action at any instant it's called because the sensitive drilling machine. These machines are capable of drilling small holes of diameter as small as 0.35 mm to 15 mm. These machines run at a better speed as high as 2000 rpm.

3. Upright Drilling Machine:

 Upright Drilling machine

It is larger in size and stronger than sensitive drilling machine. It is used for drilling medium and large-sized holes. Based on the sort of column used it's classified as a round column and box column upright drilling machines.

4. Radial Drilling Machine:

 Radial Drilling machine


The schematic diagram of the radial drilling machine is shown within the figure. It consists of the bottom , column radial arm, drill head, spindle speed and feed mechanism.


5. Gang Drilling Machine:

 Gang Drilling machine

This machine consists of the amount of drill heads placed side by side in order that quite one hole of same or different sizes are often drilled at a time on the same job or on different jobs. The space between drill spindles is varied to suit the gap between the holes. This type of machine tool is used to drill a large number of holes in the same job at a faster rate. The main advantage of this sort of machine is that the series of operation are often performed with different spindle mounted with different tool bits on an equivalent workpiece by moving it from one position to another position.



6. Multi Spindle Drilling Machine:

This machine is analogous to a gang drilling machine in construction. It is wont to drill the amount of hole within the same workpiece simultaneously and to breed an equivalent add variety of comparable jobs. All the spindle are driven by one motor and fed continuously. During the feeding table with the workpiece is raised or lowered and the drill head position is not varied.





7. Automatic Drilling Machine:

 Automatic Drilling Machine

This type of machines can perform a series of machining operations at successive units and transfer the work from one unit to the opposite automatically. Once the work is loaded at the primary machine, the work will move from one machine to the opposite where different operations are often performed and therefore the finished work comes out from the last unit with none manual handling. This type of machine is meant purely for production purposes and should be used for milling, honing and similar operations additionally to drilling and tapping.




8. Deep Hole Drilling Machine:

 Deep Hole Drilling Machine


This may be the either horizontal or vertical sort of machine. In this drilling machine, the part to be drilled is rotated and therefore the drilling bit that creates the opening is kept stationary. Deep hole drilling is completed in components like rifle barrels, crankshafts, long shafts etc.



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