Build Daily


August 12, 2017 18:08

Sharpen the drill - it's easy


    • 0.1 What is drill and how
      to hone
    • 0.2 sharpen drill bits for metal
    • 0.3 Methods sharpening drills at home with their own hands
  • 1 Terms of sharpening drills pobeditovye
    • 1.1 Working with nzhdakom

In the household the most popular power tool is a drill.Using a reliable assistant can not only drill virtually any holes, but also cut the space for the installation of electrical devices, including sockets, switches.
But for this you definitely need a set of drills.Available drill for working with any materials.
In operation, drill tupyatsya and need sharpening.Housed below
material explains how to properly sharpen a drill for metal.
to perform drilling operations produced special tools, the most common of which is a drill

Attention!To work with different materials produced special drill bit with a different angle of sharpening drills.

In addition, the effect of sharpening the angles structure materiala.No everything in order.

Types of drills

Types brought

What is drill and how to hone


Photo drills on a tree

The drill is called the cutting tool performs the cutting process due to the rotational motion at an axial feed.

Drills are used not only for the manufacture of through-holes of different diameters, but for reaming existing otverstiy.Primenyaya drill, you drill a through hole, make a hole of the desired diameter, perform a Drill to the desired depth.

But to perform these jobs, you will need the right diameter drill.

In addition, the drill must be properly sharpened.
And in order to learn how to sharpen a drill, it is necessary to clarify to what material the tool will be used.

Structurally spiral drills are available, flat or feather, ring, pivot, or for deep unilateral cuts.
Twist drills are available in various diameters.Range 0.1 ... 80 mm, with the length of the working portion to 275 mm.
Flat drill holes are used for the manufacture of large diameter to a greater depth.Structurally, the cutting part is formed as a blade, is attached to a holder.Annular drill
formed as a hollow pipe, which has narrow annular working cutting portion.
centering drills are used for centering the parts when turning.
grinding machine
But all of these tools in the process tupyatsya.A drill tupyatsya time, they should be sharpened.And to learn how to properly sharpen a drill, it is necessary to provide for some of the material will be used this tool and odes to change the angle of sharpening.
Rarer tupyatsya drill when working on wood.If you are using a drill with Drill only on wood, these drills do not require sharpening for several months or years.You just need to take good care of their storage and use.
For us it is important to learn to sharpen drill bits when working on metal, concrete.

sharpen drill bits for metal

To learn how to properly sharpen a drill for metal, read the following article is enough.
to produce grinding operation, it is necessary to have not only grinding equipment, but also protection.From
protection it is necessary to purchase protective eyewear.
A sharpening drill is best to buy a grinding machine.

few words about Sharpening

The most common grinding machine is manufactured on the basis of a small AC motor 220.

Rotational speed grinding machine from 1500 rev / min.

machine must be equipped with a mandatory transparent protective screen, glide.

do not use a drill with a diameter of more than 16 mm in the home.

So how to sharpen a drill for metal, if the drill bit blunted?

That drill sharpening is required, can be judged by there is a characteristic squeak when drilling, especially at the beginning.At the same time the drill begins to heat up, which further leads to its erasure.

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sharpening drills on special grinding machines.At home, the drill can be sharpened on a simple winepress with a stone, with the help of grinders with a nozzle on sandpaper.
So, how to properly sharpen a drill for metal?
How to sharpen a drill, shape determines the plane of the rear of the drill.
fact that the sharpening of the drill is carried on the back side.
Attention!Properly sharpened drill bit has two teeth sharpened exactly the same. Speaking about the kinds of sharpening, we note that they can be more.
easiest, odnoploskostnoy.
to perform odnoploskostnoy sharpening drill puts cutting portion to the grinding wheel in parallel.In the process of sharpening it is prohibited to move or rotate the drill bit.
This is the easiest type of sharpening.However, it is recommended to use a drill diameter of 3 mm.The biggest disadvantage of this type of destruction is considered sharpening the cutting edge of the drill during operation of to sharpen a drill pobeditovoe
second common type of sharpening is called conical.
This type of sharpening is used to drill more than 3 mm in diameter.This is a more complex form of sharpening.
conical sharpening drills difficult to perform manually.
To do it, we must take the bit in your left hand, hold the work piece.Right hand clamped shank.
Drill presses the cutting edge to the end of the grinding wheel to the desired angle.
Shaking drill right hand, create a tapered surface on the rear face of the drill.
Attention!Smooth and slow movements of hands sharpen drill pen without lifting it from the surface of the stone.
These steps follow and for the second part of the drill.
Watch out for ripening form the rear face and the angle of sharpening.
For accurate measurement of sharpening angles, use a special device called a goniometer.
If the meter is not present, you can make a template.
And what is necessary to maintain angle, where they learn the value.
grinding angle drill for metal is selected from the table.

Important!In the process, do not overheat drill, overheating leads to the weakening of steel.Be sure to make cooling and hardening the water.

To provide the required angles of sharpening drill bits, it is recommended to use special tools.
device allows sharpening angles drill with maintenance requirements tables.

Table drill sharpening angle for various materials

Table angle sharpening drills for various materials

Methods sharpening drills at home with their own hands

About sharpening drills using the grindstone we reviewed.And how to sharpen a drill?
If not at hand grinding machine, grinder can do.
Method 1
This method consists in the fact that the drill is rigidly mounted in a vise or fixture.Set fixing angle.
On grinders mounted drive to work on metal.The rotating disk periodically supplied to the drill plane.
How to sharpen a drill grinder, well shown in the video proposed.
Attention!The proposed option is not secure.Better and safer is if fix in the drill fixture or vise.

Method 2
In this method of sharpening is attached Bulgarian.On grinders mounted disk with fine sandpaper.
drill is held by hand, is applied to the drive of the cutting part.
All perfectly clear as to grind drill bit, metal grinder in the video.
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Rules sharpening drills pobeditovye

pobeditovoe How to sharpen a drill?Pobeditovye drill is most often used for drilling holes in concrete, brick, stone.
In operation, the drill is heated, making a squealing sound.This is the first indication that the drill needs sharpening.
To sharpen pobeditovoe drill is better to use a grinding machine with diamond disc. Attention!Try to withstand sharpening is equal to 170ยบ pobeditovye drill.
pobeditovye Sharpening drills is trimming blunt cutting edge.

Working with nzhdakom
sharpening drills 02

Smooth touch drills grinding stones to tweak the front surface of the drill.
Drill taken in the left hand near the cutting part, the right hand holds on to the shank.The drill is supplied to the grinding stones, cutting disc grinders or fungus with established emery cloth.
Sharpening is trimming cutting edge pobeditovye drill that when porting blunt hard surface.
Attention!We must remember that the stone grinding speed depends on the hardness of the drill.The harder the material of the drill, that the disc must rotate slower.
During sharpening it is necessary to follow the sameness of the cutting sides.Otherwise, you will get increased and irregular holes.It is important not to overheat and cool the drill bit.


    - drill can be ground correctly and in the home itself;
    - drill up to 3 mm preferably sharpened odnoploskostnaya view sharpening;
    - for drills more than 3 mm is recommended to use a conical grinding;
    - sharpening can be used not only special equipment, but also grinders with abrasive nozzle;
    - sharpening drills pobeditovye better to produce grinding machines with diamond blade;
    - when sharpening is required to use protective glasses.