What are they?
The milling drill for metal has a fairly large number of varieties. Specialists distinguish end, cylindrical, disc, shaped, angle and end tools. Let's talk about each of them in more detail.
When working with metal, when it is supposed to use a drill, the most in demand is an end-type drill with a vertical axis of rotation. It is excellent for use on flat surfaces, as it can be used to remove a layer of material of the required size.
With the help of a rotary cutter, you can form all kinds of grooves and grooves on the metal surface. This becomes possible due to the fact that the teeth are located not only on the side, but also on the end part of the product.
A cylindrical drill is used to work with flat areas of metal elements. The teeth are located on the sides and can be either straight or helical. They have a horizontal axis of rotation.
An end mill is most often used when working with a drill. With its help, you can make fairly deep grooves or contour grooves. Processing of mutually perpendicular planes is also permissible. There are main teeth in the side of the tool, while other cutting elements are located at the end.
When working with shaped surfaces, you should opt for a similar drill. They are produced by pulling and are not very long. The main difference is the fact that such a cutter is used for structures with a significant length-to-width ratio.
As for corner cutters, their design can be called the most complex. They are used most often when working with angular grooves, as well as inclined planes.
As for the design, one-corner and two-corner products can be noted. In the first case, the teeth are located not only on the side of the cone, but also on the end. With a double-corner cutter, the cutting elements are located on both conical surfaces that are adjacent.
What type of cutters are used to process metal parts
Depending on the attachment, the material can be processed:
- metal;
- concrete;
- plastic;
- wood.
The harder the object, the harder the cutting element must be. In production, they are divided by purpose:
Sharoshki
1.Blogs are used to clean the surface, remove the paint layer, cladding, such a set can be seen among the tools of the engraver or on the drill at the dentist's.
Countersinks
2.The countersinks do the rough work, cut the grooves, widen the holes.
The cutter can be of different shapes. Previously, their appearance resembled a berry on a thin sprout with a wide working area. With the development of technology, the scope of work has expanded, and the need arose for different designs.
When the updated modifications appeared, their varieties were divided by type and purpose.
End
The end ones on the base have cutting blades with a vertical arrangement, which remove metal chips, grind flat areas.
Disc cutter
The disc cutter is designed with horizontal rotation and cutters mounted on a cylinder to cut grooves or grooves.
Cylindrical blades
Cylindrical blades get rid of excess metal in different working positions along a straight or helical cutting edge.
Cone cutter
The cone cutter is convenient for cutting furrows, passes, contours of various depths on perpendicular planes.
Actions can take place with the main cutting edge, which is located on the side of the cutter or with the auxiliary end part. There are teeth on these sides.Such a conical element was named after the shape of a geometric figure. The cutter is similar to a cone, the wide part of which smoothly merges into the tapered end.
Former
To obtain different profiles, a shaped cutter with an oblong shape is used.
Drill blades
There are blades that are aligned with the drill. They drill small hollow spaces, form walls with a small thickness.
Core drill
A core drill is used to cut through large through areas.
Former
Corner cutter
An angular cutter, the most complex in terms of the device, works with inclined surfaces, cut out an angular groove.
A professional milling cutter, like a master in a home workshop, always has a full range of cutting tools to perform tasks of various complexity.
When choosing a milling cutter, first set:
- Purpose, base diameter. The hand drill will not work with the auto attachment.
- Cutting edge design. If the teeth are fixed by soldering, you need to check the quality of the seam so that the edge does not fly off during the working process.
- Sharpening level of cutting parts.
- Grip type in the shank.
- Grade of nozzle material.
To choose a good cutter, you need to focus on well-known foreign and Russian manufacturers. We are not all that bad with the quality, but the price is much lower in comparison with a similar foreign product.
Peculiarities
Combined cutting tools are gaining in popularity. The drill-milling cutter belongs to this group of products, it provides a simplification, a reduction in the number of operations when processing materials. Each of them has 2 elements: drilling and milling. The first part is needed to create the hole with the desired depth and diameter. The cutter is on the side edge, if necessary, it is activated without changing the tool - by changing the pitch of the spiral along the length, it is possible to obtain the desired result in 1 pass.
The distinctive characteristics of such a tool include high wear resistance and long service life. They are made from hard steel grades that are not subject to intense wear. In addition, such a tool lends itself to regrinding. If the angled part of the drill becomes blunt, its sharpness can always be restored.
Among the technological capabilities of such products, one can single out the performance of a whole range of operations. In addition to conventional drilling, it can be V-grooving, chamfering and milling.
These drills are versatile. They are suitable for use with a wide range of materials:
- plastic;
- MDF;
- Chipboard;
- plywood;
- drywall;
- solid natural wood;
- metal.
In the design of the milling drill, there is a shank for fixing an electric or hand tool in the chuck. And also there are 2 working surfaces at once, with which you can work sequentially or individually. Such combined models are most in demand in the field of woodworking. Depending on the type and diameter of the seating part, drill-cutters can be universal, for machine tools and hand tools, as well as specialized.
To increase the strength of steel tools, increase their service life, and reduce friction during work, their surface is often coated with special compounds. Most often there are products of golden color. They are coated with titanium nitride. Drills-milling cutters are sold not only individually, but also in sets - it is advisable to purchase such a set if drilling is performed frequently or put on stream.
Recommendations for the selection of metal products
Offers to your attention the advice of experienced experts who know all the intricacies of this tool. These include:
The material from which the part is made
It is best to choose products made of metal alloys.They are considered more durable and wear-resistant when working with a wooden base.
Lack of marriage
It is important to evaluate the appearance of the metal part here. On its surface there should not be any flaws in the form of cracks and irregularities.
During the drilling process, these defects can spoil the result.
Price. Good drills come at a fairly high price. High quality raw materials were used for their manufacture. Budget-priced models are generally single-use. During operation, they can deform or break.
After repeated use, they need to be reworked on the bottom. Sharpening drills with your own hands is quite simple. For this you need a file. The movements should be in the direction of the factory thread.
Karnash brand tools
Today it is not difficult to choose and purchase core drills for solving any technological problem, since they are presented on the modern market with a wide variety of types and brands. These can be drill bits for wood, as well as more durable and wear-resistant tools for concrete, cutters for making holes in metal products and structures.
Among specialists who often work with core drills, products manufactured under the Karnash brand are popular. The prevalence of these core drills is facilitated not only by their extremely high quality, but also by the fact that they are available in a wide range, among which you can choose a tool for solving a specific task.
Core drills Karnash
So, among the products manufactured under this trademark, one can distinguish core drills of the following series:
- Gold-Line, made of high-speed steel HSS-XE, on the surface of which a wear-resistant coating is applied using Gold-Tech technology;
- Hard-Line, the cutting part of which is made of Swedish-made carbide inserts (the expanding spiral flute of this series core drills simplifies the removal of chips from the processing zone);
- Rail-Line, the working part of which is also equipped with carbide inserts with multi-stage sharpening of the cutting edges (using the tools of this series, drilling of railway rails is carried out);
- Blue-Line and Blue-Line Pro, used for drilling hardened railways, cast iron, aluminum and stainless steel.
How to choose the right cutter for metal
To choose a metal cutter for completing an electric drill, you should pay attention to such parameters as:
- diameter;
- location and design of cutting edges;
- the type of shank with which the tool is fixed in the drill chuck;
- material for making the body and cutting part;
- sharpening quality.
Shapes of solid carbide milling cutters for drills
In the event that you need to purchase a prefabricated cutter for a drill, you should also pay attention to how well the attachment of the cutting part is. Blades, which are predominantly soldered, must fit snugly against the body of the tool, otherwise they may fly out during processing.
Sharpening quality is an important parameter that directly affects productivity and processing quality. Despite the fact that many manufacturers try to sharpen their cutters using a unique technology, preference should be given to tools that are sharpened according to one of the standard schemes.
Each milling cutter is intended for processing surfaces of a certain configuration
The material from which the cutter is made determines both its durability and the quality and productivity of processing.To perform one-time milling work with a drill, the quality of which is not high requirements, you can choose a one-piece tool made of steel of the same grade. If the cutter has to be used often, and it is necessary to obtain high quality products, it is better to give preference to more expensive tools, the cutting part of which is made of carbide inserts.
Homemade cutter cutters made of high hardened nuts and balls from bearings welded to them
Many home craftsmen who want to save on metal cutters for a drill make them from available tools. Of course, it is difficult to achieve a high-quality result with the help of such a home-made tool, but it is quite capable of coping with elementary tasks. The following tools are suitable for its manufacture:
- corrugated wheel from a silicon lighter (such a micro-cutter can be used for a long time, and if it fails, it is quickly and at minimal cost replaced with a new one);
- a dowel, on the head of which cutting edges are formed (this way you can make a small cut-off cutter that will cope with products not only from plastic and wood, but from non-ferrous metals).
For milling metal surfaces, professionals use a special tool - a milling machine and a hand-held metal router. Such equipment allows you to perform a wide range of works on products made of various materials, but its purchase is not economically feasible for home craftsmen and small workshops. Simple operations can also be performed using a widespread alternative - a hand-held electric drill.
How to choose?
Choosing a cutter for metal can be difficult for an inexperienced user. Therefore, professionals advise focusing on the diameter of the product, its cutting teeth and their location, the shank, which helps to place the drill in the drill chuck and fix it securely.
The material of manufacture and the quality of sharpening also play an important role. If you intend to use an electric drill, we must not forget that it is intended for manual use, so the drills used in special machines will not work here.
If a tool of an assembly type is required, it is necessary to check how well the cutting element is fixed. Most often, the soldering of the product is used, in this case the plates adhere reliably to the surface, otherwise they will simply fly out during the work.
Sharpening quality is also fundamental. It's not just productivity that is directly related to it, but also how well the job gets done. Manufacturers often try to develop a unique sharpening technology, but experts say that standard schemes are the most preferable.
The material of manufacture also affects various indicators. This is the service life of the tool, and the quality of work, and their productivity. When it comes to one-time jobs, the requirements are not so high. In this case, it would be optimal to use a solid element, for the manufacture of which steel of the same grade was used.
Some users are trying to save money. To do this, they make a drill-cutter on their own using available tools. However, it should be borne in mind that such a tool is suitable only for elementary tasks. It is not necessary to count on a particularly high-quality result in this case.
For more information about milling drills for metal, see the video below.