What Are Drill Bits?
Drill bits are cutting tools that are attached to a drill or drilling machine to create cylindrical holes in materials such as wood, metal, plastic, and concrete. They come in a variety of shapes and sizes, and are typically made of materials like high-speed steel, cobalt, or carbide.
Materials Use In Drill Bits
The following types of materials are used for manufacturing drill bits,
- For One-piece construction: Carbon Steel or High-Speed Steel.
- For Two-Piece Construction:
- For Cutting Portion: High-Speed Steel
- For Shank Portion: Carbon Steel with a minimum tensile strength of 70 kg/sq.mm.
The High-Speed drills are mostly used due to their cutting efficiency.
Different Types of Drill Bits
The following are different types of drill bits,
- Flat Drills
- Twist Drills
- Straight Fluted Drills
- Double Fluted Drills
- Multi Fluted Drills
- Centre Drills
- Countersinking Drills
- Counter Boring Drills
- Shell Drills
- Step Drills
- Spirec Drills
- Auger Drills
- Masonry Drills
- Rivet Drills
- Installer Bits
- Plug Cutters
- Hole Saw
- Glass Bits
- Hammer Bits
- Forstner Bits
- Tile Bits
- Plug Cutters
Here the above mention type of drill bits is briefly explained.
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Flat Drills
Commonly, the Flat Drills are made of a slender stick of High Carbon Steel, and their cutting edge is tempered in shape and hardened.
So that it can be made in any size and shape easily also these types of drills are cheap, the flat drills are used to bore holes in soft metals and carpentry work.
Flat Drills are not used for the borehole in iron material, but the biggest advantage of a flat drill is used for solid metals, and their cutting points are kept at a 90-degree angle, whereas any other type of drill gets broken.
Twist Drill Bits
Generally, the thick drills and twist drills are used to the borehole in accurate size, quickly, and cleanly and this is generally made of thin rods of alloy steel and high-Speed steel.
Straight Fluted Drill
This Straight Fluted Drill Consists of flutes or grooves that are running parallel to the axis of a drill but this drill is not suitable in standard practice and does not automatically pop out of the hole.
The Straight Fluted Drills are essentially used in copper, drilling brass, or other softer materials, the drilling twist brass moves faster than a drill feed, and they dig or drill into the metal.
Double Fluted Drills
These Double Fluted Drills are suitable for all types of work because it is stronger and best than other types of drill. These two flutes of drills are opposite each other.
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Multi Fluted Drills
Multi-Fluted Drills as the name suggests it has more than two flutes in the drills and this feature distinguishing is due to their bigger edge of cutting so that boring a hole quickly and also clean quickly, and multi fluted drills are used for special jobs.
Centre Drills
A Centre Drill is also known as a Combination Drill and this drill Countersinking and drilling can work simultaneously and also this drill is used for Fastening.
Counter Sinking Drills
Where the counter head screws are to be installed at that place, countersinking is drilling the holes. And its Cutting Point of ground at 60 Degrees or 82 Degrees.
Counter Boring Drills
The counterboring drills are also known as a Counter boring Cutters. When Allen Screws are fit then counterboring is a Work Drill, These Allen screws also fixing like a Counter Screw on the Work Surface.
Generally, the Counter Boring Drills are used for enlarging a Hole, and hole boring did up to the height of the Screw Head. Also, the boreholes are cut at 60 degrees to 82 degrees angle slanting from the top.
Spirec Drills
The Spirec Drills are delicate type drills, and are also used for boring a hole in the store nipple, Spray Pump Nozzle, Etc. and their range of size is 0.0086” to 0.0984”.
Shell Drills
Shell Drills are a unique type of drill, and they consist of four flutes also their upper parts are 1/3” / Foot in taper shape and shape like a face cutter and side cutter.
Generally, Shell Drills are used for enlarging the boreholes, and milling works.
Step Drills
Step Drills are mainly used for drilling holes in sheet metal and the appetence of this drill is like a descending shape of a ladder step drill are costly. If you work regularly with a metal sheet then only you can purchase otherwise you won’t purchase it.
The Step Drills are allowing to you drill borehole of various diameters and the other thing is it makes de-burr holes and also you can easily clean out the waste material.
Installer Bits
These installer Drill bits are used for drilling holes and installing wires for security systems and entertainment purposes and the installer bits look like auger drill bits.
The installer bits are long up to 18 inches and also use this drill through masonry, wood, and plaster.
Masonry Bit
Masonry Drill Bits are used where stone, Concrete, and brickworks are going on, and then whenever those wear out you need to replace them.
Same thing if you want to drill into the Concrete for a long period then it causes the tip to be melted. You can easily change the drill out of the concrete so that it can reduce the problem.
Rivet Drills
The Rivet Drills are mainly designed for drilling tiny rivets into a piece of thin Sheet metal.
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Auger Drill Bits
The auger drill bits are used for making a hole in dry wood and thick wood; also you don’t apply too much pressure.
Tile Drill Bits
This tile drill bit Consists of a carbide tip to drill into a certain tile that reduces the chance of cracks and chips.
Hammer Drill Bits
This Hammer Drill Bit is used for drilling a precise hole in the slab which is required for relative humidity and completion.
Glass Drill Bits
The glass drill bits are used to drill plastic, glass, brick, marble, composite material, hollow brick, and some others,s and also this glass drill has excellent to resist high temperatures.
Forstner Bits
Forstner Drill Bit makes a smooth and clean hole in any type of wood, and also its pointed tip helps to keep the drill exactly where you want.
Hole Saw
Hole Saw-type drills are used for installing a door, hardware, and wiring pass-through. This hole saw creates a useless side cut out and plugs in the saw and pushes it out.
The small hole saws include a built-in shank rather than a pilot bit, also bi-metal hole saws make a hole in metal and wood.
Plug Cutter
The plug cutter creates a hole in the wood and also cut a wooden plug together, also used for wooden professional work.
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Conclusion
In conclusion, drill bits are a fundamental cutting tool used in construction, manufacturing, and DIY projects to create cylindrical holes in various materials, such as wood, metal, plastic, and concrete.
Drill bits come in a wide range of shapes and sizes, and the type of bit used will depend on the material being drilled, the size and shape of the hole required, and the desired level of precision.
Common types of drill bits include twist bits, brad point bits, spade bits, masonry bits, forstner bits, and countersink bits, each of which is designed for specific materials and applications.
The choice of drill bit is essential to the success of a project, as selecting the right bit can lead to efficient, accurate results, while using the wrong one can lead to damaged tools or incomplete holes.
Overall, drill bits are a versatile and essential tool for a range of applications, from simple home repairs to complex industrial manufacturing processes.
With proper selection, maintenance, and use, they can help ensure that holes are drilled accurately and efficiently, helping to create strong, reliable structures and products.
FAQs:
What is a drill bit?
Drill bits are one type of cutting tool, which is used for enlarging and making holes in solid metal. These drill bits are used with drill press equipment or manually operated drills and these machines used a key to loosen or tighten a clamp.
What are the Types of Drill Bits?
The Following 22 Types of Drill Bits are used,
1. Flat Drills
2. Twist Drills
3. Straight Fluted Drills
4. Double Fluted Drills
5. Multi Fluted Drills
6. Centre Drills
7. Countersinking Drills
8. Counter Boring Drills
9. Shell Drills
10. Step Drills
11. Spirec Drills
12. Auger Drills
13. Masonry Drills
14. Rivet Drills
15. Installer Bits
16. Plug Cutters
17. Hole Saw
18. Glass Bits
19. Hammer Bits
20. Forstner Bits
21. Tile Bits
22. Plug Cutters
What is a Masonry Bit?
Masonry Drill Bits are used where stone, Concrete, and brickworks are going on, and then whenever those wear out you need to replace them.
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