Step drills for metal: Select beginners and professionals

Step drills for metal (Christmas trees) are used in the case where it is necessary to process the sheet material, the thickness of which does not exceed the figure of 4 mm. The use of such products requires that the master certain skills. it is recommended to pay attention to some of the nuances for the acquisition and the correct use of tools required.

Step drills for metal: what is the difference from the cone

I stepped and tapered products are many similarities. These instruments primarily have similar faces. Their edges are very sharp, which significantly increases the effectiveness of the tools during operation. The benefits of stepped and conical tools is the fact that they allow you to save time and simplify the processing of sheet metal. The main drawback - the price step drills and conical metal parts.

What are the differences between the stepped and tapered products? The main feature with which one can determine the type of drill bit is a construction element of the basic product without difficulty - head. This item, regardless of species of the tool has a conical shape.

Head step drill involves several stages with sharp edges. This design increases the efficiency of the tool. In turn, conical products are characterized by a smooth surface.

Features of shapes - the basic criterion that distinguishes the product from step cone drill bits for metal. Cone options are less expensive, but using them is not very convenient. Stepped tool allows you to perform the desired diameter hole even if a person has no experience with such devices. This is achieved by precise details unit at step (levels).

For some work, you can use the drill-firs

Functional parts of this type are used for the organization of the holes in the metal plates. Such drills fall into the category of specialized tools, so their cost is quite high. Often, this fact stops the buyers with the purchase. However, the acquisition of such goods may be justified, for example, in the case where the required precision when performing work.

Each level has a unique tool stepped diameter which increases as it approaches the base. Ease of construction of this type is undeniable, as it is very easy to find the desired diameter during the drilling.

These products are used for making holes in the metal. Drills for metal-firs are of high quality drilling. And it is noticeable even in the case where processing is carried out very thin sheet material. Other drills do not allow to perform a smooth hole in the metal sheet 1 mm thick.

It is said that the stepped-type instruments are used not only for metal. They can be used for drilling holes in the following materials:

• plastic;
• drywall;
• tree.

If you want to perform a hole in the pipe, and it is recommended to use a step drill for metal. Reviews of this tool you can explore the Internet. It should be said that step drills are often used for grinding the edges of the holes made by other tools. Swarf can be removed manually, but it is much more difficult.

Step drills for metal: the main advantages

Tools of this type have a number of positive qualities, which determine their high efficiency. Undoubtedly, the main drawback of such a product is considered to be its cost. The price of the stepped part varies from 2 to 5 thousand. rub. The final cost of the drill depends on the following factors:

• manufacturing material;
• strength class;
• spraying presence.

Price step drills fully justified, as their benefits greatly simplify the work of drilling holes in a variety of details. One of the most significant advantages of these products is their versatility. A cutting tool can be used to perform a huge number of problems, which is very convenient.

Another plus of these drills - high strength. In particular, pay attention to their cutting edges. The strength characteristics of these elements not only provide high accuracy during the operation, but also extend the operating period of the instrument.

The operation speed is also a positive feature of these products. The tip of the drill-fir has a pointed shape that allows its use for treating metal surfaces is very strong (e.g., stainless steel). Drill for metal is a specialized tool. When using it removes the need to use additional devices (centering parts and m. P.).

The design features a step tool gives the ability to perform accurate holes with smooth edges. Thus, when using such a product need not be applied Needle or grinders.

It should also be noted that these products are installed as a manual-type drills, and the professional stationary machines. Before purchasing a herringbone-drill is recommended to get acquainted with its varieties. It will pick the best drill for metal step type based on individual criteria.

Design and specifications are cone-step drill

These instruments have a rather complex structure. Their configuration may vary depending on the species. Let us consider in more detail what parts comprise such products. The top of the drill shows the pointed tip that allows you to crash into any metal density easily.

For the treatment of metal sheets are used, and other tools, such as crown. Drills for metal of this type does not require the use of auxiliary centering devices, but it is not suitable for use with thin metal. Spiral analogues also not accurately perform such work.

The step is very efficient when working with aluminum, steel, copper and other sheets and pipes. Tools of this kind have a conical shape, which includes two grooves. They contribute to the drilling materials. During operation, the transition to the next level for the chamfer formed hole that is created previous step.

Drill stepwise metal is 4-32 mm and opposites end which is attached to the tool holder. The opposite end, or tail, is the most suitable for this design and consists of six faces. The advantages of such tools are undeniable, so it is recommended by many of their masters to work with metal parts.

Types and sizes of drill bits for metal step type

Stepped tools used for the organization of openings, are classified on several grounds. In order to pick up your product, it is recommended to get acquainted with each of its types in more detail. The first factor, by which the differentiation of these drills, - dimensions. Depending on this criterion allocate such drills:

• small;
• medium;
• great.

Step drills also differ in the coating material. Today you can buy Cobalt drill for metal as well as titanium counterparts. The second type of product has a higher strength as reflected in their value.

Construction of drills of this type presupposes groove. The most common drill, which have straight groove. Second Embodiment Configuration - channel arrangement in a spiral. Sales models can be found that have a combined type of chip discharge groove (longitudinal-helical).

Note!step type from time to time it is necessary to sharpen drill bits. Spend sharpening will be more difficult, if the tool has a spiral groove.

Of course, one of the most important characteristics of any tool is its resolution. Steps in that the drill may have a different step. This figure may vary depending on the variety of the product. Also pay attention to another important criterion - drill diameter for metal. This parameter varies from 4 to 38 mm. Limiting the diameter value may be lower. It all depends on the number of stages in the tool. The height of one stage is typically 0.5 cm.

The number and shape of the grooves in the working step-products

One of the most important indicators of such tools is the step number of cutting edges. It is important to understand that this setting has no relation to the steps of the drill. Cutting parts are in the grooves of the conical products. In addition to their main function, they perform one more: chip discharge, which is formed during operation.

The grooves can be of 3 types: straight, spiral and longitudinal twist. Each type differs own advantages and disadvantages. As an example, a straight edge which is easily supplied sharpening. However, it is during the operation does not behave smoothly, as a spiral.

Despite the high cost, stepped tool replaces a complete set of drill bits for metal. Exploit one product is much easier and more convenient. Number of grooves - an indicator of the quality of which depends on sheet metal. drilling quality may vary depending on the speed at which the material is made processing.

When you select a drill to make holes in the metal material is necessary to focus on a few points. Acquire the first available product is not recommended, as it may not be suitable for a particular job.

Color step drills used for metal machining

All stepped tools used for processing metal sheets of small thickness, divided into groups according to quality. Identify a particular drill is pretty simple. All you need to do - to pay attention to its color. Currently, the sale can be seen the following options for tools:

• gray;
• black;
• gold (dark);
• gold (brighter).

Gray drills. This light indicates that the material for making the article is ordinary steel that has not passed the additional processing. These instruments do not have high strength characteristics. Of the advantages of such devices is worth noting their low cost.

Related article:

Lathe for metal for home: varieties and specifications

Features and benefits of the device. Overview of TV-4 machines, TV-6 and TV-7. CNC. Recommendations regarding the selection and prices. Work on the machine.

Black. This color indicates that the steel product is passed further steaming, warmed up to high temperatures. This reinforces the technical characteristics of the instruments and prolongs its service life. The price for such products is higher than the gray.

Note!Material and product itself is made of it, must comply with all parameters specified in the GOST. Drills for metal gray color are not suitable for long-term operation.

Gold (dark). Such tools are pretty intense temperature treatment. The procedure helps to eliminate this type of stresses in the metallic article. The result is a durable piece that is best suited for long-term use. The cost of such drills is quite high.

Drill bit color is not related to its configuration. All products have a special channel. The presence of grooves allows for efficient drilling metal. Special curved channels can be found in other products, which are used for drilling metal. A good example in this case are screws with a drill for metal.

Gold (brighter). Another embodiment of step type drills. Such coloring is obtained by coating the surface of articles of special protective deposition of titanium. These instruments have very high strength.

Criteria for selection of step drills for metal: a better buy

When selecting these products it is recommended to pay attention not only on their color, but also on some other points. For example, a quality tool 4-32 mm is not less than one thousand. rub. Dependence of the price of the diameter can be traced not only in the step of products. Twist drill for metal 3 mm will be cheaper than the same section of 10 mm tool.

Drills, produced by domestic companies tend to have a more attractive cost. However, experts give preference to products that have been made by foreign manufacturers. Endurance drills German and American brands is much higher.

When you select should pay attention to the final and initial diameters. In this case, a definite pattern is traced. The more steps, the greater the value of the instrument. Alternatively stepped product can purchase a set of spiral devices. Drills for metal 10 mm or more is still not as well established in the work. However, the cost of the kit is usually below.

To determine the quality of steel has a special marking. The main body of the product intended for the treatment of metallic sheets at high speeds, are indicated HSS letters. The quality of steel in this case does not allow to deform the drill even when overheated.

Another important criterion is that it is worth considering - the possibility of multiple sharpening tools. This procedure is regulated by the regulatory documents (GOST). Thus, if desired, can be found with all the nuances of this operation and to hold its own.

How to sharpen a drill for metal: step by step guide

During use, there is a stepped tool blunting its edges. Return their old characteristics allows sharpening. Such work is easiest to entrust qualified. Therefore it is recommended to apply to the specialized workshops that can be found in every city. This embodiment has the following advantages:

• diameter of the tool is stored levels;
• not violated the right angle cutting edges;
• It excludes the possibility perekalivaniya products.

Sharpening drill bits for metal can be performed independently at home. However, for this it is necessary to carefully read the basic rules that must be followed during operation.

It is worth knowing that the cutting edge of each step must be the same without fail. Sharpening should not damage them. Compliance with the exact original dimensions has guaranteed high-quality sharpening. After performing this procedure, the angle corresponding to the edges of the planes should be the same as before the sharpening.

Before starting such work necessary to prepare the support flap. More correct way - to fix the drill. The movable member is much easier to damage during sharpening. It is important to remember that this procedure abrasives are used which are classified as fine.

For this purpose, can be used various devices. Sharpening of drill bits for metal is best performed on the machine. This equipment must include a special abrasive wheel. The outer surface of the tool comprises a fine grit sandpaper.

Quality of work is quite simple to determine. To do this, you need to pay attention to the shape of the chip, which is formed in the drilling process. If the sharpening was performed without errors, the chips will have the correct dimensions.

Sharpening drill for metal with his own hands, using hand tools produced in the case where the drill has a straight ditch. Tools with a spiral channel is not recommended to handle without special equipment. For this operation, you can also use the grinder and a special range.

Price tapered step drills for metal: an overview

the cost cone drill, The design of which suggests the presence of steps, is influenced by several major factors. Various materials can be used for manufacturing this type of tools. Titanium drill more expensive, because they relate to high strength and have a longer service life.

The difference in cost is also predetermined by the tool diameter. In the shape of Christmas trees, which are sputtering of titanium, can be purchased at a specialty store or order online. Buy Tool 4-20 mm can be approximately 450 rubles. Price drills metal with a large number of stages (4-32 mm) can reach 1100-1200 rub. It is worth noting that such value is inherent to domestic products.

Foreign counterparts may have a higher price, which is 4 thousand on average. rub. Tool company Bosch, maximum diameter of 39 mm, is approximately five thousand. rub. And even this amount is not the limit when it comes to the step drill.

Note!The high cost of such tools requires careful selection of them. The modern market is replete with a variety of fakes, the quality leaves much to be desired. To rule out the possibility of buying low-quality product, it is recommended to purchase a drill only trusted manufacturers.

The price range for metal step drills is quite broad. The best solution - purchase of tools, which is located in the middle price range. Before you buy a particular drill, please note that the seller must have a certificate for such products.

Step drill - is a professional tool, which has a large work resource and allows the holes in the metal without the use of auxiliary parts. When you select this item, you must focus on the individual criteria, such as the nature of work and its frequency. It is also worth considering the manufacture of the material, diameter, shape of grooves and manufacturing companies. If desired, you can always consult with the seller, who will pick up the necessary product.