Description and rules for choosing tapered drills

On the modern market there is a huge assortment of drills designed for different types of work. Among them are in special demand conical drill. They first appeared in the 70th year of the last century and since then have been indispensable for installation purposes. Distinctive features of the conical element are versatility, durability, ease of use.

Cone drill - a professional product characterized by a long service life, versatility and ease of use. With this device, even a novice craftsman can create even holes of different sizes in a matter of minutes.

All known tapered drills are divided into 2 groups, namely smooth and stepped. Both varieties have a tapered shape and are used in the processing of metal with a minimum thickness. However, experts note that it is not very convenient to work with a smooth tool, since it is not able to repeat the exact diameter of the hole. Therefore, during the drilling process, it is necessary to take breaks in order to take additional measurements.

Stepped a type of drill has a level gradation and a certain diameter, thanks to which even an amateur can make even holes. Each step of the product is expressed in numerical value, which allows you to determine the required diameter.

The design of smooth and step drills contains grooves with sharp edges. They cut through the metal. In this case, the grooves can have a different design.

Cone-shaped cutting tools have a high level of strength... In addition, they lend themselves to sharpening, which significantly increases their service life. The master must understand that the cone drill easily replaces multiple tools, which in a certain sequence create holes in the metal.

To work with a conical drill, you will have to use another construction tool, which is retainer and scroller at high speed. It could be drill or screwdriver, depends on the desire of the master and the availability of one of the presented tools. But the most remarkable thing is that the the holes are smooth, there are no burrs or even small roughness at the edges.

According to the presented description, it becomes clear that The cone drill is ideal for working with metal sheets. The main drill task - creation of even holes. However, tapered cutting elements may not be used for their intended purpose. With their help, you can remove the defects left after drilling rigs.

Unfortunately, no one is immune from this. And in order not to fall for the tricks of scammers, it is necessary to remember that high-quality cone-shaped products correspond to the declared GOST. They have marking, which allows you to determine the characteristics of the product.

The scope of application of cone drills is very diverse. They easily process thin sheet steel, aluminum, cast iron, brass. Since they can handle hard material so easily, it means they can make holes in plastic, drywall and wood. But the most important thing is that the tip of the drill is sharp.Otherwise, its entry into the processed material will be impossible.

Any cutting tool has a number of positive and negative qualities. This fact also applies to cone drills. Before you go shopping for a cutting element, you need to brush up on its merits and demerits.

1. An important advantage of the taper drill is the possibility of creating holes of different sizes. Just one cutting element can replace a whole set of tools that were previously used by most craftsmen.
2. Another plus - strength... Thanks to this characteristic, their production is reduced. Do not forget that the speed of creating holes with a cone drill is several times higher than that of any other tool. The speed of the working process protects the tool from overheating, due to which a defect can occur.
3. The stepped type of drills, reminiscent of the image of a tree, has sharp tip, due to which the cutting product cuts into the work surface.
4. If necessary, this cutting tool can be used as a sander.
5. Conical shape during operation smoothly expands the hole diameter in the processed material, due to which the risk of deformation of the working surface is reduced to zero.
6. Another significant advantage is the way it is operated. Conical drills can be installed in hand-held equipment and on large stationary machines.
7. The top of the tapered tool may have special spraying - for example titanium or diamond shavings. Due to this addition, the strength of the tool increases significantly, and the requirement to sharpen the edges is significantly reduced.
8. One of the important advantages of a tapered tool is versatility... The drill easily processes material with a soft structure. But when working with metal, the master should take a little care, since a metal sheet with a thickness of more than 7 mm may not give in.

Each instrument complying with GOST has its own marking... It is applied to the product from the outside so that the buyer can distinguish the original from the counterfeit instrument. The cone drill has a marking indicated in the tail section.

To understand what characteristics the product has in hand, you need to know the designations marking code. Thanks to the indicated numbers and letters, it is possible to determine not the universal qualities of the product, but the material from which the drill is made, the diameter and the accuracy class. Further, it is proposed to deal with the decryption in more detail.

Most cutting drills have a pitch of 1 mm. Products created for metalworking come in different sizes. And all this is written in the labeling.

1. The alphabetic value is indicated first. Most often it is the Latin "P". This means that alloy steel was used in the manufacture of the drill. This type of material has a high level of strength and reliability.
2. The next letter and number tell you the percentage of the element added to the alloy steel.
3. The following numbers indicate the maximum and minimum hole diameters that this drill can make.

It is worth noting that on drills with a diameter of 2 mm or less, the marking is not put, since they have a very small tail section.

Each individual drill differs in color. Experienced craftsmen know that technical indicators depend on the color of the product. For example, steel the color indicates that the cutting tool has not been exposed to high temperatures.

Steel-colored drills do not have an increased level of strength, which means that they wear out much faster. Experts advise using steel-colored cutting elements to create holes in thin metal sheets, plastic, drywall and wood.

Availability black color on the surface of the drill indicates that it has undergone heat treatment, after which the product has received additional strength, respectively, its service life has increased.

Cone drill manufacturer name plays an important role for modern buyers. For sure, no one will buy a product from an unknown supplier. But the demand for branded drills is growing every day. And this is not surprising - the "louder" the manufacturer's name sounds, the better the product is. There is even a competitive race between companies. In some technical characteristics, Europe wins, and in others - the domestic manufacturer.

By the way, the Russian market is in great demand products of the Zubr company... The company is engaged in the production of construction tools and accessories for them. Drills "Zubr" from the moment of their appearance have proved themselves from the best side. Moreover, buyers appreciated not only their technical characteristics, but also a very pleasant cost.

Many experts recommend trying Japanese drills Makita brand. This company has established itself on the good side, however, not every master can afford to purchase their products.

Those who like to make something in the garage prefer to opt for German drills. brand Geko. The represented company specializes in the manufacture of household cutting products.

Many experts appreciate the German Bocsh. The brand is engaged in the production of various tools with a high level of reliability. In this case, the craftsmen are ready to spend large sums of money, as they understand that they are purchasing a quality product that will last a long time.

But in addition to branded drills, there are Chinese productsnot affiliated with any well-known company. Accordingly, these tools wear out quickly, break down and generally become unusable.

When going to a hardware store for a drill, the buyer should arm themselves with some knowledge, thanks to which it will be possible to acquire a durable and reliable tool.

1. Having chosen the drill of interest, you need to check its marking.
2. It is necessary to determine the color of the metal. A steel-colored drill indicates low strength values. Black products have undergone heat treatment, which means they have high strength. Golden ones are considered to be of the highest quality. The bright gold color indicates a premium drill bit.
3. It is important to clarify the overall and working length. You should familiarize yourself with the indicators of the diameters indicated in the marking code.
4. Having chosen a product, you need to check the quality certificate and compliance with GOST.
5. The question regarding sharpening should be clarified. Drills that can be sharpened have a long service life.

The operation of tapered cutting elements, in contrast to conventional twist drills, has certain peculiarities... They are simpler and more convenient to use. No wonder they say that novice craftsmen should work with a tapered tool.

But before starting work, you need to study instruction on the operation of the product and remember the drilling technology. During the work, the master must follow a clearly drawn up algorithm. Even the slightest indentation can lead to serious problems.

First of all, you need to prepare the tools, namely the tapered drill, drill and base, where you want to drill a hole. The drill size depends on the desired hole diameter. The drill must be powerful and pick up the required speed in seconds. Experts, in turn, recommend fixing an additional handle on the drill.... As for the workpiece, it can be any metal or synthetic surface.

By putting together the required tools, you can get to work.

1. To begin with, you need to fix the cutting tool in the drill chuck and apply the appropriate designation to the drilling site.
2. The drill inserted into the drill is applied to the work point and the tool is activated. It is important that the cutting element is perpendicular to the workpiece being machined.
3. The drill gradually deepens into the workpiece with a constant increase in the rotational speed of the drill.

The final result will be a smooth hole that does not have burrs and other defects at the edges.

The following video provides an overview of the cone drill.