Table of Contents
What are the 5 types of drill bits?
20 Different Types of Drill Bits & Their Uses Twist Bits. Also known as high-speed bits, they resemble corkscrews and are some of the most popular bits. Brad Point Bits. Brad point bits come in handy when you need to make clean and precise holes. Masonry Bits. Rivet Bits. Spade Bits. Installer Bits. Step Bits. Auger Bits.
What is a spade drill bit used for?
Spade Drill Bit Spade drill bits can be used on wood. Useful for drilling holes in wall studs for framing, electrical, plumbing and fine woodworking projects. Bores holes with a large diameter.
What is a fluted drill bit?
Most drill bits for drilling wood, metal or masonry incorporate some type of flute in the design. The flute is a deep groove that typically twists around the bit, giving the waste material a path out of the hole. Flutes can vary in size, shape and the number of flutes on the bit.
Which type of cutting tool is a drill bit?
Drill is a multi-point cutting tool as it contains more than one cutting edges and all cutting edges simultaneously take part in cutting action during machining.
What are the types of drill bit?
Types of Drill Bit Twist Drills. General purpose bits for drilling wood, plastic, steel etc. Masonry Bits. These are steel drills with a piece of Tungsten Carbide welded or brazed into the tip. SDS. Universal / Cordless / Multi-material bits. Lip & Spur Wood Bits. Countersink. Titanium or TiN Bits. Flat Bits.
How many different types of drill bits are there?
Drill bits are generally classified as Twist Drill, Counterbore, Countersink, Flat Bottom Boring, and Specialty. On our web site we have divided these into two categories: Drill Bits – Normally used with hand held drills or drill presses fitted with standard chucks.
What is spade bit?
Also commonly known as paddle bits, spade bits have a wide, flat blade. The flat, broad blade of a spade bit has a pilot point attached to a 1/4-inch diameter shank that can be chucked into both regularly-chucked drills and quick-chuck impact drivers.
What sizes do spade bits come in?
Spade bits are usually available in metric sizes ranging from 6mm to 36mm and imperial sizes ranging from 1/4″ to 1 1/2″. The size of the bit is usually engraved onto the body of the spade itself so that each bit can be easily identified.
What is an auger bit?
auger, tool (or bit) used with a carpenter’s brace for drilling holes in wood. It looks like a corkscrew and has six parts: screw, spurs, cutting edges, twist, shank, and tang. Expansive auger bits have adjustable blades with cutting edges and spurs that can be extended radially to cut large holes.
What is Twist drill cutting angle?
drill techniques For general-purpose twist drills the helix angle is about 32°. The angle formed by the two sides of the tapering point is 118° for standard drills, while for drilling tough metals, a flatter point with a 135° angle is recommended.
What is SDS drill bit?
SDS drill bits make drilling holes into concrete, block and stone that much easier. The shank boasts double grooves which keep SDS drill bits extra secure and facilitates outstanding hammer action. Compatible with most hammer-action drills and easy to fit.
What is twist drill bit?
Twist drill bits are used for drilling through anything from wood to plastic to metal products, but not masonry and concrete products. However, their primary use is for drilling through metal.
What size is a drill bit?
Bit size reflects the diameter of the body. Some projects call for specific drill bit sizes, but a bit set that includes sizes from 1/16 inch to 1/4 inch will work for many jobs around the home and workshop. You can add larger bits — 5/16-inch, 3/8-inch, 7/16-inch and 1/2-inch bits — if you need them.
How the size of drill bit is measured?
Typical drill bits have markings somewhere on the shank above the threads. It’s small, but it usually has the drill-bit diameter stamped into the metal; the number is written in fractions. For example, the markings may read: 1/4-inch, 3/6-inch or 25/32.
What is the cutting edge of a drill bit?
Cutting Lip — The cutting edge of a two-flute drill which extends from the chisel edge to the outer edge. Secondary Cutting Edge — The cutting edge formed by the intersection of the face of the notch with the relieved surface of the point, resulting in partial removal of the chisel edge.
What do numbers mean on drill bits?
In simple words, the numbers on your drill refer to how much torque will be applied to a fastener such as a screw. Once that particular torque level is reached, the power drill will stop driving the fastener or turning at all.
How is hole diameter measured in drilling process?
A caliper log records the hole diameter measured using spring loaded caliper arms. Figure 9.2. 1 shows a variety of two, three, four, and six arm calipers. In general, the more arms, the more accurate the measurement of the shape and cross-sectional area of the wellbore.
What size is a 1/8 drill bit in MM?
Fractional inch drill bit sizes Drill size Diameter (in) Diameter (mm) 3/32 in 0.0938 2.3813 7/64 in 0.1094 2.7781 1/8 in 0.1250 3.1750 9/64 in 0.1406 3.5719.
What are the main types of drills?
10 Different Drill Types Drill Driver. A drill driver is by far the most popular type of drill amongst homeowners – and the reason behind that is quite simple. Impact Driver. Hammer Drill. Rotary Hammer Drill. Core Drill. Ground Auger. Screwdriver Drill. Cordless Drill.
What type of drill bit is used for most materials?
High Speed Steel (HSS) Bits Also known as ‘twist’ drill bits, these bits are the most common of the many drill bit types and are ideal for everyday drilling through wood, metal and plastics. They will normally have a cylindrical shank, but some will be modified to feature a ¼” hex shank.
