How The Hammer Drill Differs From The Hammer Drill
For the drill, the main field of application is in metal, tile and wood drilling. Well, the hammer drill is designed to overcome concrete and brick walls. Therefore, it is difficult to compare the result of the work performed by one and the second tool by the hours or minutes spent, and by the quality. Indeed, for a drill, the impact function is only an additional one. However, as well as the functions of drilling in a hammer drill. Do NOT disregard the instruction, using the tool “to the fullest” where only short-term operation is allowed. Sadly it will end. a good thing will break.
What is the puncher used for?
This tool is used to break up any materials. It is often used by both cool “pros” engaged in construction and repair on an ongoing basis for several years, and home craftsmen.
Using a puncher, you can:
- Drills a hole in concrete, brick, blocks
- Remove the plaster;
- Knock down the tiles;
- Break off bricks;
- Perform slitting of concrete walls.
Without this tool, you cannot make repairs, nor build a house. It is convenient to work with it. it is fast and has almost no recoil.
Instrument attachments can be:
- Core drills;
As for the rig, it can have a tail section of two systems. It’s either SDS Max or SDS Plus.
The SDS Plus system features four oval mounting grooves. Two of them are at the end and are open, the other two are hidden. When the shank is inserted into the chuck, it moves along the open grooves, like a guide. Special locking balls hold it in closed holes.
Drills with SDS Plus shanks.
The SDS Max system has NOT four, but five notches for mounting. Now there are three open grooves, so the storms are held more firmly. This system is most often used in professional tools.
The chisel attachment is placed on the hammer drill when something has to be dismantled. The mug nozzle is used for chipping walls before laying wires or for making holes in the wall. The bit will help you make a large through hole.
The main difference. Impact system
The most significant difference between the hammer drill and the hammer drill is the principle of the hammer system. So, in a drill, two gear mechanisms. ratchets. are used to form a blow. The tool holder is rigidly connected to the first of them, and its body. to the second. When the impact mechanism is not needed, a stopper is inserted between the ratchet, and they have a contact. When the impact mode is turned on, the stopper is removed, and the gear train converts the rotational movement of the chuck into a forward-return.
This process is just beautifully shown in the following, despite the fact that the announcer constantly calls the hammer drill a hammer drill, in fact, the shows the work of a conventional hammer drill. It’s just how the translator and the speaker know how a drill with a punch function differs from a perforator, they didn’t read our article :).
What are the main characteristics
For electric drills, the main characteristic is torque, or torque. The unit for measuring it. Newton meter. Perforators are classified according to the second criterion. For them, the main thing is power, which depends on the impact energy. This value is measured in joules. And the torque of the hammer drill should NOT be at all large, it is often much less than in an impact drill with a similar power motor.
And here the hammer drill takes the lead again. After all, the impact energy he has, no doubt, is greater than in an impact drill. Therefore, working with a hammer drill is much more comfortable. it is not necessary to press on it as hard as on an impact drill. Working with the latter, it will be extremely difficult to punch a hole without significant pressure.
Where and why is the drill used?
Let’s talk about the drill first. Even a person who is not quite versed knows that it is with this tool that, if necessary, you can drill large or small holes in almost any material. If the drill is equipped with a percussion mechanism, then it can also punch concrete walls (that is, work in percussion mode). However, this mode is easy to turn off; switch to traditional hole drilling, which is very convenient. But this is NOT the end of the drill.
Depending on what material needs to be drilled, various types of drills are used, which both look different and are intended for different purposes.
So, for drilling a wooden surface, wood drills are useful, but in most cases they are replaced with ordinary metal drills. In some cases, feather drills are used for drilling wood.
If you have to work with metal, then other drills are needed. more durable, having a certain design.
And with tiles and glass, you should be careful. just look, instead of an even hole, a chip will turn out. Therefore, to solve such problems, there is another type of drill. These are lance drills for ceramics and glass.
For making large holes, core drills are the best option.
As mentioned above, when the hammer drill works like a hammer drill, it is capable of hammering concrete and brick. Although she cannot become a full-fledged perforator, she can perform work of an average degree of complexity. For THESE purposes, drills with victorious tips are used.
To grind the surface with a drill, it is enough to use a grinding wheel as a nozzle.
If there is a need to clean various metal surfaces on the drill, it is enough to put on a special brush made of steel wire.
If the wire is bundled into the brushes. Twisted, then the processing will be rough. For finer finishes, use a corrugated wire nozzle.
If you need to mix some kind of mass, then the drill can be easily converted to a mixer. For this, there is also a special nozzle.
This makes the impact drill a versatile tool capable of many functions. In the presence of some additional tools, it can work with a mixer, and a screwdriver, and a grinding machine, or, when the chiseling mode is turned on. Perforator.
The difference between a hammer drill and a hammer drill. Put everything on the shelves
Looking at a showcase with a neatly laid out instrument, just eyes run up, percussion drills, punchers, screwdrivers. They are all a bit similar in appearance, and many people think that they are completely the same. Let’s find out in all the details how a drill differs from a perforator and in which case this or that tool can be useful to you. To begin with, we will consider why and in what cases this or that tool can be used.
How an electric drill works?
An electric drill is often used for repair work. To understand the specifics of this device, one should abstract from the theoretical part and concepts of how it works in practice.
What functions does a drill differ from a hammer drill? Consider the main parts of the device and their purpose in the drilling process.
- Cartridge. Holds drill bit for grinding or screwdriving.
- Reducer. Reduces the speed of the electric motor armature. Their number is tens of thousands per minute. The gearbox is the transmitter of energy from the chuck to the drill. The same gearbox in other drills has an impact function. It received the name “ratchet” mechanism.
- The electric motor takes electricity from the grid and converts it into rotational energy.
- The power button is needed to close and open the power supply circuit of the electric motor. A wheel on the button controls the engine speed. In different models of the electric drill, it is in different places.
- Button to switch from normal mode to shock mode.
- Device case.
- Induction rings or chokes. They are mounted to smooth the frequency of the current.
- The capacitor serves as a protector against interference in the electrical circuit, eliminates heat and sparks when the electric motor starts working on brushes.
- Network cable.
- For drilling a surface made of wood, special drills are used, but in most cases they use conventional models designed for metal. In some cases, pen devices are used.
- If you have to make holes in metal, then you will need drills with a high level of strength, which have a special design.
- When working with tiles or glass surfaces, you should be extremely careful. Instead of a straight hole, a chip can easily turn out. To solve this problem, another type of drill has been invented. With a spear shape. It is designed for ceramics and glass.
- To drill large holes, you will need bit type drills.
- An impact drill works like a hammer drill. It can handle concrete and brick surfaces, although it will never reach the level of performance of a hammer drill. The tool is designed for work with an average level of complexity. For THESE purposes, win-win drills are used.
- In order to grind the surface with a drill, a special nozzle in the shape of a circle is used.
- To clean the metal surface, a steel wire brush is put on the drill. If the wire is twisted, then the processing will be rough. Finer stripping requires corrugated wire.
- For mixing the mass, the drill can be easily converted into a mixer. A special nozzle is also provided for this purpose.
SDS Max device
Contains five recesses for securing. There are three open grooves, which provides a strong fixation of the drill. As a rule, such a system is used in professional-grade devices.
The principle of operation of the punch
The differences between the hammer drill and the drill are as follows:
- The electrical energy converted by the motor into rotational energy passing through the gearbox is transmitted to “drunk” bearing or on the crank mechanism. These, in turn, facilitate the movement of the piston. The piston, located in a hermetically sealed tube, from the air flow and direct impact energy sets the ram in motion. The moving ram transfers the impact energy to the block. This is how the nozzle hits the surface to be treated.
- The hammer drill differs from the drill by the presence of a special protective sleeve. It is mounted in the tool. Based on its design features, which is the impossibility of turning the drill in the chuck when jammed. The clutch can dampen the rotation. This protects the master and protects the instrument from failure.
- Also inside the hammer there is an anti-vibration system and some specific parts.
Rotary hammer bits
The main tool tips are:
- Core drill;
The chisel is placed on the hammer drill during dismantling work. Mug is used for chipping walls before laying wires or to make a hole in the wall. Core drill can drill large diameter through holes.
The rig has two types of tail section:
- SDS Plus;
- SDS Max.
How does a puncher work?
What is the construction of a tool such as a hammer drill? How is this device different from a drill? The electrical circuit of the instruments is identical. The main difference in the design of the perforator lies in its impact mechanism. Let’s take a closer look at this detail.
It should be noted that there are two types of impact mechanisms: electromagnetic and electro-pneumatic. The first type is not often used, as it has a high level of sensitivity to dust (the unit quickly deteriorates).
In turn, both species can have different structures.
There are designs based on:
- “Drunken bearing”;
- Crank mechanism.
The first mechanism has a smaller impact amplitude and is used in models of the puncher for light work. The second is designed for units of medium and heavy performance level.
The latter type is usually intended for three types of work:
- Impact drilling;
SDS Plus device
It contains four oval grooves for fastening. Two of them are located at the end and are open, and two are hidden.
When the tail assemblies are inserted into the chuck, it moves straight along the open slots as a guide. Special locking balls act as retainers in closed holes.
The purpose of the punch
The main purpose of the rock drill is to break up various materials. The tool is usually used by experienced professionals who have been working in the construction industry for more than one hour.
The main functions of the punch:
- Drills holes in concrete, brick;
- Remove plaster;
- Knock down the tiles;
- Chipping off bricks;
- Conducts slashing of concrete walls.
A hammer drill differs from a drill in functions and performance?
The drill belongs to the category of the most common universal construction tools. There is also another device. Perforator. How is this device different from a drill? It is indispensable for construction and interior decoration. And although the design of the devices is somewhat similar, the principles of their operation are completely different.
To work with a high level of productivity and convenience, you should clearly understand the differences between the tools.
This article will explore what is the difference between a hammer drill and a drill. Each device will be described separately.
A perforator is a percussion tool that crushes the working surface and rotates the nozzle. Distinguish perforators by weight criterion. Lungs have a low power up to 700 watts. Their total weight does NOT exceed 4 kg. The mass of medium perforators ranges from 5 to 9 kg, and the power ranges from 800 to 1500 watts. The heaviest weight can exceed 8 kg and the power output is over 1600 W.
Perforators are used when working with concrete or brick surfaces. You can use a variety of nozzles, drills, erysipelas, chisels or core drills are suitable for it. The tool is easy to use. An automatic clamp is used as a nozzle lock, you just need to insert and snap the desired storm into the hole.
The power tool is diverse in functionality. For a specific type of work, one of the perforator programs is used, adjusted for a specific nozzle. Its functions include drilling, impact mode and both of the above possibilities working at the same time.
What is the difference between a hammer drill and a hammer drill
Besides the difference in cartridge performance, there are many other significant differences. In the operation of power tools, it is worth considering the specifics and scope of each of them. The hammer drill is suitable for work with more malleable materials than concrete or brick, its possibilities are limited. You can try drilling a hole in the wall, but the risk of chuck breakage is high, and its cost is equivalent to a new tool. An impact drill will be strong enough to remove irregularities from the wall, mix the mixture with a special nozzle or chisel the walls.
The range of use of a punch, even a non-professional, is much wider. The tool is capable of withstanding high loads and penetrates hard materials like concrete or stone. It will take less time to create a hole of the required depth than in a drill with percussion mechanisms, the reason has already been mentioned earlier in the features of each tool and its principle of operation. A wide range of attachments of different sizes also gives the advantages of a rock drill. However, due to the automatic fastening of the tool, it gives out a spread in the diameter of the hole, so if you have a nozzle of 100 cm, then the size of the recess will be larger within 50 mm, since the storms fluctuate during operation.
The drill is equipped with only two work functions, and while the hammer drill can perform drilling, simultaneously hitting with drilling and separately hitting, the drill is designed for only the first two actions. With this power, She will not be able to punch through a concrete or brick wall, knock off tiles or grind a path for a cable in the wall.
In operation, the impact drill is also inferior. To work with it, you need to make a lot of effort to make a hole, since the impact mechanism requires additional emphasis on the surface. The hammer drill is cost effective, cheaper than more professional equipment, but of lower quality. A hammer drill is bought much more often due to its high impact power. It has a safety clutch to protect the tool from breakage in situations where the drill can jam. The cost of a hammer drill with equal power, and not Considering the impact energy, since it has more, is about 2 times higher than that of an impact drill
What is the difference between a hammer drill and a hammer drill
When doing construction work at home, you need not only skills, but also the right tools for specific tasks. Here the choice of the necessary equipment depends on the quality of work and the amount of time spent. In activity, the question of the difference between a hammer drill and an impact drill is especially common; difficulties arise when choosing and using them. Let’s figure out what’s what.
An impact drill is a necessary repair tool that can save money and solve a number of minor problems. The power of the produced models ranges from 300 to 1550 W. Light drills are considered small, their power is not enough for serious work, but their diminutiveness helps to solve problems with hard-to-reach areas.
The material most suitable for using a low power drill is wood, metal, and other non-solid blades. The versatile version of the hammer drill has a power of 600 watts. The tool is suitable for both harder work and a simple one, the best option for repair work in the house.
An impact drill with a power of 800 to 1000 W is capable of mixing various mixtures, the power of such a drill will be enough to perform work with thick substances with the right attachment. Power tools operating at 1500 W are produced mainly for industrial purposes. Their field of application is aimed at the implementation of diamond drilling, which leads to a large equipment power.
We list the main differences between a hammer drill and an impact drill. The main difference lies in the mechanism of the instruments. From the name it becomes clear that the hammer drill is based on a mechanism with a similar operating principle. Two ratchets. parts serrated in a circle, which, when working, create a shock of a low height. In cases where the system of strikes is not required, the contact between them is separated and the stopper and the mechanism comes to a passive position.
The principle of the hammer drill is completely different. Depending on the method of operation, it can be electromechanical or electropneumatic. The first type of instrument is more common, the movement creation system Based on two coils. Under the action of voltage, they create oscillations and cause the core to move up and down in a cyclical motion. The resulting force is transferred to the working storm or the second tool.
In an electro-pneumatic rock drill with “heart” The driving force can be related to the crank mechanism or figuratively called “drunk” bearing. The first principle is the next transfer of energy from the piston to the working tool by creating compressed air, which, under pressure, sets the mechanism in motion. The piston itself is created by an oscillatory motion by means of a lever and a piston connected together. The advantages of THESE two devices are that the force produced by the movement is much greater than the force of an impact drill, and the distance that the mechanism rises is many times greater when struck.
Pros of an impact drill
But the hammer drill has advantages that are NOT interchangeable with other tools. So, it is easy to use, the weight of a low-power Electric Drill is NOT that high, so anyone can handle it. The tool is perfectly adapted for tightening screws, at low speeds the task will not be difficult for an impact drill with a suitable attachment. The holes are made with the required diameter in accordance with the drill size. The electric drill is wide in use and can act as an angle grinder or serve as a grinder when using the right tool.
Summing up, we can say that the choice between a hammer drill and an impact drill is a matter for everyone. When choosing a tool for yourself, you need to proceed from the material and method of work, not to dwell on the advantages and disadvantages of equipment, it will be enough to know the differences.
How does a hammer drill differ from a drill
Punch device. How does he work. Features of the drill mounting. Cartridge. Impact energy. The cost
If you are planning to carry out repairs in the house yourself and we assume you are drilling a large number of holes, you, of course, need a hammer drill.
In terms of popularity, the hammer drill is not at all inferior to an electric drill, being one of the most popular electric tools used in repair business.
The main task of the rock drill is the operation of drilling holes in difficult-to-work materials such as concrete and stone. But, as an addition, there is also the possibility of drilling holes in metal, brick and other materials, the processing of which is often encountered during the repair process.
Despite the similarity of the principles of operation, rotary hammers differ in their characteristics from impact drills. This is because drills are designed to work with common materials, not doing very well on hard.
The main difference between a hammer drill and a drill with an impact mechanism is that the hammer function in the drill is implemented purely mechanically, while the hammer drill uses pneumatics or an electromechanical device for THESE purposes.
The pneumatic drive of the rock drill pushes the firing pin, a heavy mechanical piston that strikes the rig. Drill hammer function helps to increase the hammering power when drilling.
The hammer blow must be powerful enough to break the material. That is, the punch storms DO NOT drill the material, but cleaves.
Another difference between the hammer drill and the drill is the design feature of the drill attachment. In a hammer drill, most often there is no chuck with a cam clamp, as in a drill, since such a design cannot guarantee protection against turning the drill, and also does not provide free play, which allows increasing the force of impact. It is for this reason that a new type of chuck (SDS) is used to mount the drill into the hammer drill.
This type of fastening provides free movement, ease of replacement, and also excludes the possibility of turning it during operation. But at the same time, chucks can be equipped with both key and fast chucks, which is typical for various models of even one manufacturer.
The presence in the hammer drill of a separate mechanism responsible for the impact, allows you to implement three modes of operation of the tool: conventional drilling, drilling with impact and only impact.
The main hammer is the impact mode. This is a mode designed for chipping, chipping off tiles, cutting down partitions when walls are destroyed. Impact energy is the main characteristic of a rock drill.
Unlike a drill, for which power is the main characteristic, it is the impact energy that determines the maximum drilling diameter. Often perforators, with similar power, have different impact energy, which determines different types of work performed for them.
Impact energy is measured in joules, varying, depending on the model, in the range from 2 to 6 J. The higher this indicator, the more complex tasks the tool can perform: from mounting and drilling small holes to the destruction of capital partitions made of bricks and chipping in concrete.
The cost of a hammer drill is, of course, more than drills with an impact function, but high reliability, durability and ease of use will greatly facilitate the implementation of self-repair in the house.
The controls are located on the tool body, as can be seen in the following
The following main components are hidden in the plastic case:
The principle of operation of the hammer drill consists in converting the rotation of the electric motor into the shock-rotational movement of the nozzles. The electric motor drives the rest of the hammer drill mechanism.
The safety clutch ensures the safety of specialists during work. The drunken bearing drives the piston, creating an impact force, and the chuck secures the nozzles.
Impact drill and hammer drill what is the difference
Externally, the main difference between a hammer drill and a hammer drill is in weight and dimensions. The modern impact drill has the same dimensions as the Hammerless counterpart, and the hammer drill is heavier and larger.
Also, most drills have a pistol layout, with a horizontal motor. Among rock drills, a vertical engine design is also very common. This option allows you to shift downward, closer to the hands of the worker, the center of gravity, thereby making it easier to work with a heavy tool.
Internally, the modern rock drill and hammer drill differ much more. Impact drill, to create not only rotational but also reciprocating movements, is equipped with a unit consisting of a pair of toothed ratchets. In simple drilling mode, these two ratchets do NOT interact with each other in any way.
A hammer drill is a more complex device equipped with a complex percussion mechanism. Often separate shafts are used to drive the drill and create jolts (as opposed to an impact drill).
The shock movement is transmitted by means of an eccentric mechanism or a swinging (“drunk”) bearing to the piston striking the striker (ram). The latter transfers the impact energy to the chuck with a drill or drill located. The torque is usually taken from a separate shaft.
Knowing how a rock drill and an impact drill work, the difference between the two becomes clear. Due to its design features, the drill has a low impact impulse. When working with very hard materials, the recoil significantly affects the ratchet teeth, leading to their heating and accelerated wear.
There is another disadvantage in rotary hammers: large dimensions make the work in the drilling mode more difficult, more energy is required from the worker. A drill, weighing 1.5-2 kg, is much more convenient to hold than a 4-5 kg perforator. And this tool consumes more electricity (per unit of time).
Even knowing the pros and cons, it is quite difficult to decide which is better. a hammer drill or an impact drill. In fact, the question itself in this form is incorrect and is a classic example of the “battle of an elephant with a whale”.
If there is a choice of the type “hammer drill or hammer drill”. which one to prefer. depends only on the specific conditions of use. Just as a bus is good for transporting people, and it is more convenient to transport rubble to dump trucks, so these tools are good for everyone in their business.
What is the difference between an impact drill and a hammer drill
When drilling holes in brick or concrete, a hammer drill or impact drill is usually used, in which the rotation of the drill (drill bits, crowns) is accompanied by blows in the axial direction. These tools are considered to be similar in their action, but in fact, the differences in them are no less than similarities.
What is the difference between a hammer drill and a hammer drill? First of all, in their main function, for a hammer drill it is chiselling, in an impact drill. drilling.
The difference in the main function was determined by the difference in the schemes of the percussion mechanism. In a hammer drill, the latter is a rather complex unit that exists in two versions. electromechanical and electro-pneumatic. The most common electro-pneumatic type, providing the best tool performance.
The figure below shows a diagram of an electro-pneumatic rock drill.
Punch hammer mechanism device:
The rotary motion of the electric motor is converted by means of a crank mechanism or a special swinging spherical bearing into a reciprocating piston motion.
Under the action of compression in the cavity between the piston and the ram, the latter accelerates and through the hammer transmits its energy to the tool. drill, chisel, drill, crown, etc. For more information about the punch device, see the article Punch device.
When the drill is switched to the impact position, the stopper is removed and when the drill is pressed against the material, the ratchets begin to contact, skipping each other. In this case, the chuck and the drill are given an axial reciprocating motion.
The difference in the design of the percussion mechanisms determines a significant difference in the technical and operational characteristics of the hammer drill and the hammer drill.
Modern full-function rock drills have three modes of operation: impacts without rotation (work in the mode of a jackhammer), rotation without impacts, rotation with impacts. The hammer drill can be used Not only for drilling various materials, but also for other work. hollowing out niches or grooves in stone walls, chipping off excess material, etc.
Punch mode switch (Bosch). Between drilling with impacts and impacts without drilling. position for changing the position of the chisel (Vario-Lock).
The hammer drill is used only for drilling holes and works in two modes: drilling without impact and drilling with impact.
The performance of the hammer drill when drilling stone materials is several times higher than that of an impact drill. This is primarily due to the higher impact energy. In a hammer drill, it ranges from 1.5 J for light models to 20 J for heavy ones. Drill impact energy is negligible.
It depends on how hard the tool is pressed against the material. Even if the clamping force is large, the impact energy still remains low due to the small amplitude of the axial movement of the drill, equal to the height of the ratchet tooth. The hammer drill’s performance is also enhanced by its weight, which exceeds that of a hammer drill of the same power.
With the same power of the tools, the hole diameter that can be obtained with the introduction of a hammer drill is approximately 1.5 times the hole diameter obtained with an impact drill. The difference increases even more if a crown is used for drilling.
There is a big difference between an impact drill and a hammer drill in the tools used and how they are attached. The picture below shows the most commonly used punching tools.
The hammer drill tool used for drilling concrete walls is most often a winnowed drill bit.
In hammer drills and drills, drills and drills are mounted in chucks, but their design in hammer drills and drills is very different. For quick tool change, the rotary hammer drills use the SDS-plus, SDS-max and SDS-top tool clamping systems. Fixation in the chuck takes place using specially shaped grooves.
In a hammer drill, the tool has a certain degree of freedom in relation to the chuck in the axial direction, which makes it possible to reduce the load on the hammer during impacts.
When using an adapter, a design is obtained from two series-connected chucks. SDS and three-jaw. The disadvantage of this option is the lack of sufficient rigidity of the drill attachment and its runout during rotation.
A hammer drill is much more durable than a hammer drill. if you use the latter with a hammer function. Its pneumatics provide significantly less vibration and gentle conditions for the operation of all its mechanisms. The tool has a safety clutch to protect it from breakage in the event that the drill gets jammed in the hole. for example, when it hits the reinforcement.
Impact drill ratchets are heavily stressed and wear out very quickly. Strong, hard vibration negatively affects all the mechanisms of the drill, disabling them at an accelerated rate.
With the same power (but not the impact energy, which is much higher for a hammer drill), a hammer drill costs much (1.3-2 times) more than an impact drill.
The question. which is better, a hammer drill or a hammer drill. has no definite answer. It all depends on the purpose for which the instrument is purchased. The hammer drill is a tool for drilling and chiselling concrete and brick walls. It is acquired in cases where there is a need to drill a large number of holes in concrete or brick.
If you need to make cavities (plumbing) in concrete walls for wires, sockets and switches, then you need a puncher. At the same time, it is not necessary to buy a punch, it may be more profitable to rent it.
What is the difference between an impact drill and a non-impact drill
Before proceeding to consider the differences between a hammer drill and a hammer drill, consider the differences between a hammer drill and a non-hammer drill:
Sds plus sds max difference
Do not look at such a variety of convenient and practical SDS shanks, in construction they are common: the SDS Plus holder and storms for simple household tasks and its “brother” SDS Max chuck and drill for heavy professional activities.
The unique technology of construction and fastening of drills in the tool makes them indispensable in our time: the SDS system has proven itself as a reliable innovation that extends the operating life of the working tool, and allows you to maximize the functionality and power capabilities of the tool without loss.
And the modern execution of the Buro makes them convenient and practical for working with household and professional percussion instruments. The SDS Plus concrete drill is used with household rotary hammers of light weight: 2-4 kg, they are used in domestic and industrial conditions for drilling holes in solid materials up to 26 mm deep.
The structure of the SDS shank is easy to remember: there are four grooves in the profile: 2 open and the same number of closing ones. Open ones serve as guides for entering the chuck (40 mm deep). Locking balls enter the closed grooves, fix the storms in the tool.
Drills Available in commonly used diameters. 6mm, 8mm, 10mm, 12mm.
Breaking drill SDS Max. already visually different. The diameter of the SDS Max drill is twice as large as the SDS. that’s 20 mm, and is used as a working part of heavy rock drills in construction and when dismantling surfaces.
Such drills are relevant when strobing walls, ceilings, concrete, foundations, asphalt and other hard surfaces.
The design of the SDS max is a little complicated: the length of the drill allows you to insert it into the hammer drill 90mm deep, and the fivefold number of grooves (of which 3 are open and guides, and 2 are closed and holding) ensures reliable holding and free movement of the drill.
To work with this SDS Max concrete drill, special SDS Max rotary hammers are required.
Models with special demand among professionals are produced by the following brands:
Principle of operation
In the hammer drill, the impact occurs due to the reciprocating movements of the first piston in the cylinder. Air is compressed between the pistons. The air energy drives the second piston-striker or hammer, which strikes another intermediate striker of a smaller diameter or striker, which strikes the butt of the drill. The return of the hammer is due to the rarefaction of air between the two pistons during the return stroke of the first piston. This principle of impact was most widespread even in jackhammers.
How does a hammer drill differ from a drill
A hammer drill is needed to drill a hole in a brick or concrete wall. Also, for this purpose, you can use an impact drill, the work of which is arranged in such a way that the drill, crown or drill rotates simultaneously and the impact occurs in the axial direction.
But it’s worth noting that this is where the similarities end. The first and main difference between the hammer drill and the hammer drill is that the hammer drill is needed for chiselling, and the hammer drill is needed for drilling.
The difference between a hammer drill and a drill is that the hammer drill has a percussion mechanism, which is a complex unit, the operation of which is possible in an electromechanical and electro-pneumatic version. Often, an electro-pneumatic type of perforator is produced, since pneumatics can improve the operating parameters of the tool.
The drill contains a percussion mechanism that is simpler in structure. There are two ratchets here. The first ratchet connects to the body and the other connects to the rotating chuck. If you turn off the hammer function, then the ratchets stop contacting each other.
If the drill switches from drilling mode to impact mode, the stopper is removed. During operation, the chuck and drill move in axial and translational directions at the same time.
Impact drills can only work in two modes: the first is drilling without impact, the second is drilling with impact. over, a perforator can make niches and water pipes in the wall, remove excess material from the surface.
In terms of productivity, the hammer drill is far inferior to the hammer drill. The latter has a sufficiently high impact energy. The impact energy of the drill had and depends on the force of pressing the tool against the material being processed. The impact force in the drill will be small, even if you press it hard, since it has a small amplitude of drill movement in the axial direction.
Various tools and mounting methods are used for the hammer drill and drill. Drills and drills are mounted in chucks in both representatives, but the design is very different. The hammer drill has a clamping system for quick tool changes. These include SDS-plus, SDS-max and SDS-top. The instrument is fastened by means of special shaped canafs.
Today, hammer drill manufacturers equip the kit with special adapters and chucks for a conventional drill.
The difference between a hammer drill and a drill If you use an adapter, then a structure is formed that does not firmly fasten the drill, and accordingly the runout during rotation will not pass properly.
The difference between a hammer drill and a drill also lies in the fact that work with a hammer drill is much easier. The clamping force in the punch is 5 kg, in the drill. 10-15 kg.
Since the rock drill has less pressing force, there is less vibration in the hands. Thanks to the softening air cushion in the pneumatics, the firing pin and the piston do not collide with each other, which means that the hands will be less tired.
The hammer drill has a special safety clutch that protects the tool from breakage in some cases, for example, if the drill hits the reinforcement.
In the drill, the ratchets will work without a sparing mode, so THESE parts wear out quickly. The cost of tools differs at the same power. The price of a hammer drill is twice the price of a drill.
Impact drill device
In order to drill a hole Not only in wood and metal, but also in brick and concrete, in addition to rotational movements, translational percussion is required. Impact is designed to crush the material while drilling pulls the crumbs out and helps the drill dig into the material.
That is, for effective drilling of hard materials, it is necessary that the rotational and percussion movements occur simultaneously.
Impact drills consist of several main components: a tool body, an electric motor, a gearbox, bearings, buttons for switching on and adjusting revolutions, a chuck.
This impact system is called mechanical. And since the ratchets are subject to a lot of friction when rotating, they will gradually wear off. With the active use of the percussion mode, this process will be accelerated many times over, and as a result the percussion function will come down to comments.
The main function of the hammer drill is still drilling, so the control mechanism of the hammer drill is provided with a speed regulator. This switch is essential for efficient handling of various materials and consumables.
For example, for drilling a brick, the regulator is recommended to be set at a large number of revolutions, for drilling tiles, on the contrary, at a small number. The same analogy can be drawn with the introduction of different attachments.
Most manufacturers in parallel produce tools with two types of chucks. with Key (cam) and keyless (keyless). Their main difference is that a special clamping wrench must be used to clamp the key chuck.
Whereas, to clamp the keyless chuck, just tighten it by hand. Both systems have their own advantages and disadvantages. The keyless chuck will allow the operator to quickly change the working attachments, while the key chuck will allow you to fix these attachments much more reliably.
Reverse is also a very important system for the efficient operation of the hammer drill. Switching this mode, the operator forces the tool to rotate the working attachments in the opposite direction. This function is essential when the working attachment is jammed in the material.
In order not to damage the hole, pulling the drill out of it is quite enough on the reverse. Turn it in the opposite direction. In addition, the reverse function is perfect for those cases when the operator will use the drill as a screwdriver. It will help you Not only to tighten the threaded fasteners, but also to unscrew them.
How does a hammer drill differ from a drill
The main purpose of the tools
To find the difference between the two tools, you need to understand their details and determine the main application.
What is the difference?
An impact drill and a hammer drill, although they have common features, have a number of differences among themselves, on which it depends which tool is better to choose for one or another type of housework.
The purpose of the drill is considered to drill holes of the required diameter in materials with different characteristics.
If there is a percussion mechanism in the drill body, then with its help it is also allowed to grind concrete walls.
But the usability does NOT end with two main functions.
Thanks to a wide variety of additional attachments, the drill can be converted into a versatile tool, which is indispensable in everyday life. Most of the accessories are not included in the standard kits, but they can be purchased separately, saving on the purchase of additional tools. Simple models of drills work from the pressure of the master, therefore, to achieve an effective result, a force of 10-15 kg must be applied to them.
The main difference in the process of performing tasks lies in the ease of operation. For effective work with a hammer drill, a force of 5 kg is enough. But for the normal functioning of the drill, you will have to attach a mass of 10-15 kg to it. In addition, the hammer drill Almost does not tremble in the hands, which makes it easier to hold and increases the accuracy of the result. This is due to the presence of an air cushion in the pneumatic mechanism. It does not allow the striker to collide with the piston, which reduces shaking.
With the constant inclusion of percussion mode in the drill, a hammer drill with similar characteristics will last much longer. The pneumatic mechanism prevents and dampens vibrations, so the whole structure suffers from them much less. There is also an additional safety clutch in the device. She will be able to save the hammer drill from breakage if the drill happens to jam, for example, when it is screwed into the reinforcement.
But the ratchets in drills carry enormous loads during operation, so they wear out quickly. Due to strong vibrations, the entire mechanism endures constant stress and gradually collapses.
The weight of both tools can vary significantly from model to model and design. There is a classification of rock drills by weight:
- Lightweight (2 to 4 kg)
- Medium (about 5 kg);
- Heavy (over 5 kg).
Average drill weights vary between 1 and 4 kg.
This indicator of the perforator in the drilling process is several times higher than that of a hammer drill. First of all, this is due to the impact energy. Light perforators produce from 1.5 kJ, and heavy ones. up to 20 kJ. In a drill, this indicator is insignificant and depends on the weight, which is applied to the surface. But even if the master presses very hard, the impact energy is almost not increased. This comes from the modest range of axial movement of the drill, depending on the size of the shank. The performance of the hammer drill is also higher due to its large weight, which exceeds the weight of an impact drill, even with their equal power characteristics. The frequency of hammer blows varies from 4 to 4.5 thousand beats per minute, and in powerful drills it reaches 2-3 thousand.
The hammer drill is adapted for operation with two functions: drilling with and without hammering. On sale you can find a huge number of drill accessories for use on different materials.
The main equipment that is used most often:
- Simple wood drills (including feather drills)
- durable drills for metal coatings;
- Lance drills for ceramics and glass (allows you to make a hole in tiles)
- Core drills (made to create large holes)
- Drills with high strength pobeditnoy ends (replaces the main function of the hammer drill)
- Grinding wheel (for material polishing);
- Brushes with twisted or corrugated wire (for roughing and finishing objects);
- The mixer is used for mixing building mixtures.
Most of today’s full-featured rock drill models operate in three modes: rebound, spin, and kick spin. Therefore, the hammer drill works both for drilling and for gouging, chipping and chipping.
With the introduction of a punch, the following tasks are performed:
- Drilling holes and grooves in concrete, bricks, blocks;
- Wall chipping;
- Driving in rods;
- Removing plaster
- Drilling holes;
- Screwing in bolts, screws and self-tapping screws;
- Chipping off bricks;
- Knocking down tiles.
A hammer drill is indispensable in many situations. It works quickly, but almost does not create recoil. When performing tasks, it is forbidden to exert strong pressure on the device, this leads to breakdown. Sufficient force that can be applied to the tool is 5 kg.
The difference in the performance of the main function is explained by differences in the components of the percussion mechanisms. In a hammer drill, it is made in the form of a complex unit of one of two types (electromechanical or electro-pneumatic). The second type of engine is more popular because it provides better performance.
The torque is transmitted from the engine by a crank mechanism or a special swing bearing made in the form of a sphere. The moment is converted into reciprocating action, which is performed by the piston. In the space between the piston and the ram, pressure is generated, which accelerates the ram and, with the introduction of the striker, transfers its impulse to the rig.
The hammer mechanism in the drill has a much simpler design. It is made of two ratchets, one of them is connected to a rotating chuck, and the other is connected to the body. If you turn off the impact mode, then the contact between the ratchet stops with a stopper. When the mode is turned on, the stopper hides and when the drill touches the surface, the ratchets act together. At this point, the chuck and drill create a reciprocating motion. The difference in the details of the hammer drill and the hammer drill determines the differences in the technical and operational features of the devices.