How to connect a circular saw directly. How to make a starting unit for a power tool

Setting and adjusting manual circular saw

When choosing a circular, it is difficult to find the only option that will arrange always and everywhere. However, much can be determined based on the tasks that are to solve.

Types saw

Disk, saber, tape, chain. and this is far from the entire list of saws presented on the market. How to determine what exactly you need

Acquaintance with a disc (circular) saw

Disk, or circular, saw is actively used at the construction site, in a furniture workshop and even in a summer house. How it is arranged and why it is so popular? We answer questions.

Submissive disk saws

Submersible circular are expensive and are found in catalogs of only a few eminent manufacturers. But among the pros, interest in this tool is great. What are its advantages over a conventional circular?

Not bad manual circular saw. What kind of circular saw to choose: tips and tips

Previously, a manual circular saw was found on sawmills only on sawmills. What model of such equipment to choose, today many private masters are already thinking

If you also decide to acquire such a device, it is important to consider the main characteristics, among which, for example, a power source

How to cut the board along and down exactly

Due to the differences in the design of manual and stationary saw, the methods of sawing wood are significantly different.

Work on the circular machine

If you need to cut the board along the fibers, for example, non.cunning, then this is done as follows:

Spend a flat fishing line for a trimmer on the workpiece using the ruler;

Then, along this line with maximum accuracy, make the first cut to cut off the bark;

Next, you should install parallel emphasis (guide) and dissolve the workpiece on the smaller boards;

If the length of the circular table does not allow long boards to dissolve, then for these purposes you can make a simple device shown in the next figure.

Advice! For transverse sawing on the machine, you will need to install a movable carriage on its table. If it was not in configuration to the machine, then this device can be made with your own hands. How to do this is described in detail in the next video.

Using this carriage, you can handle boards and bars both at straight and at any angle.

Sprinkled boards with a hand disk saw

Many ownership of manual disk electric saws are faced with the problem of ending the board along the line. At the very beginning of sawing, the fishing line for the trimmer is visible, but then it is overlapped by the casing of the unit. Since the markings are not visible, the cut is uneven.

To smear the board evenly and get the perfect slice, you need to place the tool so that the saw disc is opposite the marking. On the other side of the unit, attach the square to the board and move it to the sole of the device. Fasten the square with a clamp. You will receive a guide installed at right angles. Carry through the boards. As a result, you will get the perfect cut at an angle of 90 °.

For the longitudinal cut of the boards, the guide tire is used. It can have longitudinal grooves in which a manual saw of an electric. Also, the tire in the form of a simple long guide can be made independently. In the second case, one of the side sides of the sole of the unit during sawing will go along the tire (ruler) fixed on the workpiece. As a result, you will get an even longitudinal cut.

The following drawings shows homemade guides, the width of which depends on the size of the sole of the manual saw.

How to make a starter from the TS-122-25 Simistor?

Make a smooth start for corner grinders with your TS-122-25 TS-122-25. First of all, it is recommended to prepare the contact resistor resistor. Capacitors will require a single.pole type. In total, three elements are installed in the starter. The capacity of one capacitor should not exceed 5 pf. To increase the operating frequency, the contactor on the lining is soldered. Some experts say that you can increase conductivity thanks to filters. The rectifier unit is used with a conductivity of 50 μA. He is able to withstand large overloads and will be able to provide high speeds. Next, to collect a smooth start for an angular grinder with your own hands, a thyristor is installed. At the end of the work, the model is connected through the adapter.

If the tool is not equipped with a speed regulator, then he does not need it. The corner grinder, for example, is always used at full speed, otherwise it becomes dangerous. Why such a power tool for a smooth start? There are many reasons, because the sharp start of the engine of the same grinder or electric fugank causes:

• burnout of the brushes and lamps of the rotor;
• current blow in the mains;
• The instrument attempt to break out of the hands, which is unsafe;
• A strong trigger of the gear of the gearbox against each other, causing their quick wear.

With smooth starting, neither current nor mechanical impact will occur. The engine of the power tool will smoothly start and go to maximum speed.

Making a smooth start

The scheme is assembled on a printed circuit board with dimensions of 45 x 35 mm, the board is divorced as compact as possible so that it can be built into the body of the tool, which requires smooth start. It is better to solder the power wires directly into the board, but if the load power is small, then you can install terminals, as I did. The board is made by the Lut method, the process photos are presented below.

It is advisable to tie the paths before the sinking of parts, so their conductivity improve. The microcircuit can be installed in the panel, then it can be removed without problems from the board. First, resistors, diodes, small capacitors are sealed, and later the largest components. After completing the assembly of the board, it must be checked for the correct installation, call the paths, wash the remaining flux.

The simplest scheme

UPP with the regulation of revolutions on the thyristor KU 202 has been widely used due to a very simple execution scheme (Scheme 1). Its connection does not require special skills. Radio elements for him to get it very simple. This model of the regulator is made of a diode bridge, a variable resistor (acts as a regulator U) and the tiristor setup circuit (feed U to a 6.3.volt number control exit) of a domestic manufacturer.

Due to the size and number of parts, the regulator of this type can be built into the power tool case. In addition, the handle of a variable resistor should be removed and the revolution regulator itself can be finalized by integrating the button in front of the diode bridge. The basic principle of operation is to adjust the revolutions of the instrument electric motor due to restriction of power in manual mode. This circuit allows the use of power tools with a capacity of up to 1.5 kW. To increase this indicator, it is necessary to replace the thyristor with a more powerful one (information about this can be found on the Internet or a directory). In addition, it is necessary to take into account the fact that the thyristor control scheme will differ from the original. KU 202 is an excellent thyristor, but its significant drawback is to set it up (a selection of parts for the control scheme). To make a smooth start in automatic mode, scheme 2 (SCP on the microcircuit) is used).

Step.by.step instructions for modernization of conventional carrying

My improvement of an ordinary extension cord consisted of simple actions. I will describe the whole process in order:

Dismantled the existing carry and examined its contents.

Made in the case a hole intended for the wire connecting with an outer mount outlet.

Saved wires to the contact terminals.

Fixed the carry on the wooden bar and closed the upper part.

Introduced a piece of wire into the body of an additional outer outlet, which screwed to the same plank. Cleaned the ends of the wire.

I connected the BPP (as can be seen from the scheme above. sequentially), firmly plundered the joints of the wire connections from the extension cord with the unit and isolated the thermal estimate about the pipe (instead of it you can use the insulating tape).

Neatly in the external outlet, the block and contact terminals put in the case. Everything is easily placed inside.

Closed the lid of the outlet and checked the performance of his device.

The result was a universal and comfortable design. The master can use it in different modes (smoothly launching the fir of E. Lectropribor or in the usual way), as well as wear and use everywhere: at home, in the garage, in the country, etc.D.

As an alternative, I propose another option of advanced carrying with BPP and a speed speed regulator.

This scheme contributes to the smooth operation of the tools, with their access to the nominal frequency of rotation. As for the acceleration time, the declared speed is achieved faster or slower, depending on the available capacitor C3. A variable resistor R2 is called upon to regulate the rotation frequency.

BPP can also be installed in the electric tool handle. But this manipulation is more complicated, moreover, you can lose the right to warranty repairs. It is more advisable to adapt a branching box for such purposes.

The diagram indicates the TS122-25-5 Simistor, but another will fit. If only the voltage class was not less than IV and the current is not less than 1.5-2 ratings.

The described device is designed to simplify the work with power tools, increase its safety, and also increase the life of the applied devices. These factors, combined with the simplicity of modernization of carrying, allow you to get the necessary thing in the household.

Smooth start has been widely used in a safe launch of electric motors. During the start of the engine, the nominal current (IN) is exceeded 7 times. As a result of this process, the operational period of the motor is reduced, namely the stator windings and a significant load on the bearings. It is because of this reason that it is recommended to make a smooth start for power tools with your own hands, where it is not provided.

General information

The stator of the electric motor is an inductance coil, therefore, there are resistance to the active and reactive component.

When the electric current flows through radio elements that resist with the active component, there are losses associated with the transformation of part of the power into the thermal type of energy. For example, the resistor and windings of the electric motor stator have resistance with the active component. It is not difficult to calculate active resistance, since the current phases of the current (I) and voltage (u) are coincided. Using the OMA Law for a chain site, you can calculate the active resistance: R = U/I. It depends on the material, cross.sectional area, length and its temperature.

If the current passes through the reactive type of elements (with capacitive and inductive characteristics), then, in this case, reactive R appears. The inductance coil that has no almost active resistance (when calculating, R of its windings is not taken into account). This type of R is created thanks to the electric motion force (EMF) of self.induction, which is directly proportional to the inductance and frequency of I, which passes through its turns: XL = WL, where W is the angular frequency of alternating current (W = 2PIF, and F is the network current frequency) and l. inductance (l = n / rm, n. the number of turns and RM. magnetic resistance).

When the electric motor is turned on, 7 times more nominal (current consumed during the operation of the tool) and the stator windings are heated. If the stator coil is old, then an interval short circuit can occur, which will entail the failure of the power tool. To do this, use the device for a smooth start of the power tool.

One of the methods for reducing the starting current (IP) is the switching of windings. For its implementation, 2 types of relay (time and load) and the presence of three contrasts are required.

Starting an electric motor with windings connected by the type “Zvezda” is possible only with 2 not at the same time closed contactors. After a certain time interval, which sets the time relay, one of the contributions is disconnected and another, not used earlier. Thanks to this alternation of the inclusion of windings and the starting current is reduced. This method has a significant disadvantage, since when two contrasts are at the same time, a current of KZ arises. However, when using this method, the windings continue to heat up.

Another way to reduce the starting current is the frequency regulation of the launch of the electric motor. The principle of this approach is the frequency change in the supply U. The main element of this type of smooth starting device is a frequency converter consisting of the following elements:

The rectifier is made of powerful diodes or thyristors, which acts as a converter U power supply into a constant pulsating current. The intermediate circuit smooths out a pulsating direct current at the output of the rectifier, which is assembled on a large capacity capacitors. The inverter is necessary for direct converting the signal at the output of the intermediate circuit into the amplitude signal and the frequency of the variable component. The electronic control scheme is needed to generate signals necessary to control the rectifier, inverter.

MAKITA smooth launch unit

Misha, after showing the second option, you said that he is also not perfect. And what, all the same, the ideal version of the connection in the schemes, where the active switching group is also used for dynamic braking?

Thanks. I have just such a trim, when a lot of work is one at a time, and you are sorry for the disk that the disk does not have time to stop, otherwise the blow and jump, it gets out again. I will try.

Well done Michael. Everything is competent, sensible. Like

Like. Today, Uncle Misha seems to have been younger. Probably rested well.

Thanks! Let’s try to look for your Chinese smooth start. Like is definitely!

Mikhail, thank you very much! The question is of course a businessman, but nevertheless. and with a freer manual, the module will work? The seller in the store persuaded to buy a milling mill without him, saying that he is not needed, but for the first time turning on the milling mill, I realized that without him there is nowhere!

I did in the same way, but at the Makita 2414nb metal endings. I could not find in my city from Interskol, more precisely, I found it, but the seller could not say exactly which wire is responsible for what. But I did not risk it at random. Found in the online store. I don’t know why, but there the seller was able to bring and told how to connect. I will try in the near future to shoot a video about the finalization of the saw.

I myself on a grinder (corner grinder) of a smooth start module put there resistance twisting that could be set out the desired launch time.

Hello, Michael. If it is possible to put such a module on the end, then it is logical to assume. that there is also such an option on the bristle grinder Makita? Otherwise it tears from the place right into the quarry, which is very inconvenient.

Very useful lotion!Thanks a lot!

I consider the current a dynamic brake more likely a minus than a plus, because of it on the Boshevsky saws used at work, the stator often burned at work

Special thanks for the pleasant competent speech, signed up.

Simple, accessible and essentiallyLike, definitely

Michael, hello. I did not find a two.wire module, only three. Where is the average, the third wire fasten? Such a bunch that I am generally confused.

Frantic saw, also set a smooth start became more pleasant to work

I took the PP block from Makita 1040 F. Two gray wires come out of it, one shorter than the other shorter. Is there a difference of how to connect them in a broken black wire or not?

Misha thank you very much for the answer. And there were doubts about connecting.

And how is the current on which BPP is designed to affect the start speed? they themselves came up with or who prompted?

Mishan. give Interskol to the masses. I also have all the regulators from them and PP I take PS: by video likes definitely.

Good day. And if you turn off the wire of the dynamic brake and pp into an actively bursting wire, then I understand everything will be great? The only dynamic brake will stop working for us, but as I understand it from the discussion, it’s even good that it will stop working? Or I’m wrong?

On the intercots, this is probably the trick, while the den is spinning, you can overturn the glass and light a cigarette. For example, with my Rubank R-102 1100watt. But besides this, there is a module of constant electronics 00.ten.07.01.04. At idle speed, the engine does not operate at a maximum, when loading, the turns increase. Thanks to this fit, the tool is really quiet. He is much quieter than my second Rubank R-82 750 Vuts. It is only sad that this module is weak in current and is not suitable for a tool more powerful than 1100watts, as well as at the off the forum is written by representatives that this module is tuned to a specific engine.

In the corner grinder Makita for 2200W will pull?

There is a metal plate with a hole on your smooth start module. So, most likely it should be screwed to the radiator with this plate so that it does not overheat. Without him, he can be very warm and fail. Good luck Michael.

Michael, hello! I have this ending for a year, in my work. a month and a half, with your help, I have eliminated, perhaps, its main drawback for which you are very grateful to you. Thanks!

Small Hint: I used a module of smooth firewalls of the halogen lamps (necessarily the one that works for the transformer, t.e. inductive load). I bought the cheapest and low-power and set a powerful simistor, in which case the final cost of the unit was 2-3 times cheaper. Plus the prevalence of such blocks more. The lack of this method is necessary to be friends with the soldering iron. Dignity: cheapness, PIC controlles are located in blocks, which are more reliable and provide a more gentle engine operating mode.

thanks for the advice. After watching this video, I installed a smooth start on its end. The only difference is that Mikhail sets the button. he speaks articulate, and I swore terribly in the process, since the module itself did not want to fit into the handle building.

The other day, the PP on Intercker almost a new milling cutter died. So I think if it is worth buying the same again or look for analog? The milling mill and 5 meters did not pass, and the pp died. “Lucky” or they are all like?

Is it possible to install such a module in a socket, so to speak, all for all the tools, but with a margin ?

Michael, in your hands any operations are simple and understandable, the video as always. simple, affordable and in case! I want to ask about the model with the lantern: I bought LS1040F for myself, so it’s not written anywhere that it is with a smooth start: and I start with the same way as yours (before restyling)! Maybe I don’t understand something?

It seemed to me, or the dynamic brake after installing the smooth start did not work?

Thank you for the video. I chewed everything intelligently for such teapots as I but now after watching I am already savvy and will try to put it on the Ryobi table circular circular. Sincerely from Lviv.

Thanks.Available for those who are far from the topic.Is it possible to cut a video with a three.wire smooth start (specifically for LS1040) two.wire difficult.

at 45 seconds-Focus-hop! On the module there are two wires of the same color-how input and output?In the video the dexterity of the hands and no “fraud”!

Damn, I am wildly sorry, but where to buy this bastard you installed

Tell us about the brakes, which type is better and who are well implemented!?

Please tell me why braking does not always work after installing PP?

Michael, hello. I bought a saw and I really want to make a PP, but on it I don’t want to disassemble and solder inside it. But is it possible to just make a small extension cord, a meter long, and integrate the PP block into it? precisely, it is clear what is possible, the question is: whether the PP unit will work, if mounted it to the starting button for the device? that is, he will always be energized, but without load. This somehow affects his work?

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To help the master: Review of the Makita 4329 jigsaw

With electronic engine protection. The maximum possible angle of inclination is 45 degrees. The engine is electric. Pilary design. manual. Network cable length 2.5 m. With a smooth start. The depth of the cut 135 mm. Saw type of saw. jigsaw. Power 720 watts. With the ability to connect a vacuum cleaner. Supporting. aluminum. With a protective casing. Maximum rotation speed, rpm. 800. The number of speeds is 1. With anti.vibration. With backlight. Height: 207 mm. Weight: 2.5 kg.

Buy in the online store player.RU

With a cut depth of 65 mm. With the number of speeds 1. Support slab. stamped. With a length of the network cable 2.0 m. Connecting a vacuum cleaner. With noise level85 dBA. Smooth start. Pilary design. manual. Protective casing. The engine is electric. With engine power 450 watts. Anti.vibration system. Saw type of saw. jigsaw. With the maximum possible inclination of 45 degrees. With maximum rotation speed3100 rpm. Weight: 1.9 kg.

Buy in the OZON online store.ru

With a vacuumber. DIFFICTION DECHEL 107 mm. With a protective casing. With the ability to connect a vacuum cleaner. Maximum disk diameter 305 mm. The maximum possible angle of inclination is 45 degrees. With a smooth start. Network cable length 3.5 m. With a spindle lock. The number of speeds is 1. Type of saw. end. Noise level, DBA. 91. Pilary design. desktop. With engine lock. Maximum rotation speed, rpm. 3200. The engine is electric. Supporting. steel. Power 1650 watts. Weight: 26.6 kg.

Buy in the online store wow! Online hypermarket

Backlight. Pilary design. manual. With a length of the network cable 2.5 m. Supporting. aluminum. Protective casing. The engine is electric. With the number of speeds 1. Smooth start. Anti.vibration system. Saw type of saw. jigsaw. Connecting a vacuum cleaner. Electronic engine protection. With maximum rotation speed800 rpm. With engine power 720 watts. With a cut depth of 135 mm. With the maximum possible inclination of 45 degrees. With height: 207 mm. Weight: 2.5 kg.

Network cable length 2.5 m. Pilary design. manual. With backlight. Supporting. aluminum. With electronic engine protection. Saw type of saw. jigsaw. Power 720 watts. With a smooth start. With anti.vibration. The number of speeds is 1. The maximum possible angle of inclination is 45 degrees. The engine is electric. With the ability to connect a vacuum cleaner. With a protective casing. Maximum rotation speed, rpm. 800. The depth of the cut 135 mm. With height: 207 mm. Weight: 2.5 kg.

With a length of the network cable 3.0 m. Supporting. aluminum. Protective casing. With maximum rotation speed2800 rpm. Anti.vibration system. Saw type of saw. jigsaw. Smooth start. Connecting a vacuum cleaner. With engine power 720 watts. With the number of speeds 1. With a cut depth of 135 mm. The engine is electric. Pilary design. manual. With the maximum possible inclination of 45 degrees. Backlight. Weight: 2.5 kg.

Saw type of saw. jigsaw. Pilary design. manual. The maximum possible angle of inclination is 45 degrees. Supporting. aluminum. With anti.vibration. With backlight. Power 720 watts. With a smooth start. The depth of the cut 135 mm. With a protective casing. With the ability to connect a vacuum cleaner. The number of speeds is 1. Maximum rotation speed, rpm. 2800. Network cable length 3.0 m. The engine is electric. Weight: 2.5 kg.

Anti.vibration system. Smooth start. With noise level102 dBA. With a cut depth of 400 mm. Sloking stretch. With engine power 1350 watts. Protective casing. Type of saw. chainsaw. Automatic lubrication of the chain. Electronic engine protection. Pilary design. manual. The engine is gasoline. With maximum rotation speed12800 rpm. The brake of the chain. With an oil tank 0.3 l. With the volume of the fuel tank 0.4 l. With the number of speeds 1. Weight: 4.1 kg.

The engine is electric. With a smooth start. With electronic engine protection. The number of speeds is 1. With a protective casing. Saw type of saw. jigsaw. The maximum possible angle of inclination is 45 degrees. Power 720 watts. With the ability to connect a vacuum cleaner. The depth of the cut 135 mm. Supporting. aluminum. With anti.vibration. Maximum rotation speed, rpm. 2800. Pilary design. manual. With backlight. Network cable length 3.0 m. Height: 207 mm. Weight: 2.5 kg.

The engine is electric. With maximum rotation speed1500 rpm. With a cut depth of 23 mm. Built.in battery. Pilary design. manual. With engine power 1500 watts. Smooth start. With the number of speeds 1. With the maximum possible inclination of 45 degrees. Protective casing. Support slab. stamped. Engine location. transverse. Pilla type. disk (circular). With a maximum disk diameter 85 mm. With height: 155 mm. Weight: 1.6 kg.

Drink Sable Electric Makita Jr3060T 0088381061315

Power 1250 watts. Pilary design. manual. With electronic engine protection. Network cable length 3.0 m. Engine location. longitudinal. SPEN depth 255 mm. With a smooth start. The engine is electric. Noise level, DBA. 87. Pilage type. saber. Maximum rotation speed, rpm. 1800. The number of speeds is 1. Weight: 4.2 kg.

The engine is electric. With maximum rotation speed1800 rpm. With a length of the network cable 3.0 m. With a cut depth of 255 mm. Pilage type. saber. Smooth start. Pilary design. manual. With noise level87 dBA. With engine power 1250 watts. With the number of speeds 1. Electronic engine protection. Engine location. longitudinal. Weight: 4.2 kg.

From which finished device you can use the engine for a homemade circular

Most often, engines from two electrical appliances are used:

Bulgarian engines have a power range from 500 to 1200 W. This allows you to ensure stable work and the possibility of sawing solid wood.

The washing machine, in turn, with a range of 800 to 1500 watts allows long.term uninterrupted operation.

An example of connecting an electric motor from a washing machine

Consider the connection of the simplest model of the collector electric motor, which is presented in the image. The principle of its device is elementary. an electric voltage is supplied to the windings, a magnetic field arises, which causes the formation of the EMF and the investigative rotation of the shaft. But not everything is so simple.

Under the black polymer cap is a speed sensor with the possibility of adjusting them. When connecting the engine to the network in 220V, it is necessary to take into account such an email component. engine.

Typically, from the side of the case there is a contact relay or a case with chips, where the wires go from windings, sensors and regulators. But where to supply voltage? First of all, it is necessary to understand which wires come from.

Two white wires are supplying, that is, when the voltage is supplied to them, the rotor rotation, and therefore engine shaft. Gray are used to power the speed sensor, and why are red and brown?

As shown in the image, the red wire is used to transfer the left winding, and the brown. for the right. When the voltage is supplied, rotation is left or right, depending on which of which the winding on the red or brown wire to give a large value of the potential difference.

To connect to the network, you can use a regular cable with a stepsel and two terminals that are connected to a contact box. one terminal for wiring from the brown and red wire for simultaneous supply to the winding. In turn, the value is regulated using a rheastteic regulator.

Between the plug and the cable, a button-breaker for closing and opening the contacts is mounted.

After watching the video, you can see a simple and reliable way to connect an electric motor from a washing machine automaton.

Most want to make a circular saw from the engine that was lying in their garage. But, it should be understood that not all of them are equally well suited for a home.made type. It is best to use a more suitable asynchronous engine for 380V and then a home.made circular will delight for many years with its work.

Scheme connection of the drill button. with a reverse, a revolution regulator

Drill repair can be carried out on its own, most importantly, to know the causes of breakdowns and methods of their “treatment”. Today we will talk about how the Drill button connection scheme looks like, we will not get around the attention of other malfunctions, so you will be the happy owner of a working tool.

Possible tool malfunctions. we carry out repairs ourselves

If your tool has become worse, or completely stopped performing its direct duties, it is time to diagnose the malfunctions and try to cope with them. First, check the wire for damage and the voltage in the outlet, for which you can include any other device. TV or kettle.

If the voltage is smaller, you will have to change the batteries to new. If the battery works normally, power supply is normal, look for problems in the hardware. The most common breakdowns are considered:

Knowing how the electric drill button is connected, you can quickly solve the malfunction. In addition, the problem with the work of the drill can occur due to the dustiness of the tool, because the drill “takes” the tree, and brick, and other materials.

So, you should take care of cleaning the device after each use. the only way to reduce the risk of failures in work due to the contamination of the tool.

That is why after you carried out repairs in the apartment, immediately clean the drill.

Drill button connection diagram. how to fix the problem?

Unfortunately, in order to check the tools of the tool, you will not have enough tester, which is due to the fact that most of the device buttons are equipped with smooth speed adjustment, and therefore an ordinary tester can give you incorrect data.

In this case, you will need a special connection scheme for the drill button. Often in the tools, one wire is connected to the terminal, and therefore the simultaneous press on the button leads to call the terminals.

In the event that the light is caught fire, everything is fine with the button, but if you notice a malfunction, it’s time to replace the button.

When replacing it, take into account that the scheme can be either simple or with a reverse. Due to this, all work to replace the button is necessary exclusively according to the scheme, not adding anything “from yourself”.

So, the part should fit in size and match the power of the tool. At the same time, the calculation of power is a fairly simple lesson. We use the formula p = ui (taking into account that the power of the drill is 650 W), I = 2.

94 a (650/220), which means that the button should be 2.95 a.

How to connect a drill button yourself?

Despite the fact that this process is quite complicated, you can do all your work with your own hands, observing some important rules.

For example, remember that the opening of the case can lead to the fact that all parts and poorly fixed spare parts will simply fall out of the case. Naturally, this should be avoided, because then it will be quite difficult to assemble the device together.

To do this, you can smoothly raise the lid, noting the exact location of the spare parts on paper.

The button is repaired as follows:

• First, locks for the casing are tidied, after which it is carefully pulled out;
• All rusted and darkened terminals are cleaned of soot, for which you can use alcohol or sandpaper;
• We re.collect the tool, making sure that all the details of the device are in its place, and check the operability of the drill. if nothing changes, we change the detail;
• We fill the circulation regulator with a compound, and therefore, when failing, the part is simply replaced by the part;
• Frequent breakdown is the erasure of the working layer under the rheostat. it is better not to repair it, just spend time in vain, it is better to purchase a new one and replace it and replace it.

Many are interested in where to get a similar scheme? First of all, she should go along with the instrument when buying it, but if there is no scheme, or you lost it, you will have to look on the Internet.

After all, only with its help you can carry out repairs correctly, without errors.

By the way, the speed control button and the reverse control button are located in different places, and therefore they will have to be checked separately.

Electric motor verification: causes of breakdowns and repair

There are several reasons for the breakdowns of an armature or stator drill. First of all, it is illiterate operation of the device. For example, many users simply overload the tool, working without a break. This leads to the fact that the drill engine does not have time to “relax”.

The second reason lies in a bad motor wire, which are often found in cheap models. That is why the breakdowns of cheap tools are much more common. Repair in this case must be carried out using a specialized tool.

And it will be better if you entrust this work to professional specialists.

However, if it was decided to carry out repairs on your own, you will definitely have a question. how to do everything right? As you already understood, the electric drill “suffers” with breakdowns of the anchor and stator, and this can be checked by several signs, for example, when when working, the tool suddenly sparkles. If there are no “bright” signs, you can use an ohmmeter.

• First, carefully disassemble the device body;
• Remove the wires and all internal details;
• After clarifying the reasons for the breakdown, we change the spare part to a new one, the case is closed again.

How to replace brushes: work in a couple of minutes

But the drill may not work due to banal malfunctions-for example, due to brushes inside the engine. So, you can’t do without repairing brushes here, while this work is quite simple. you do not even need to have special knowledge and tools.

To do this, analyze the device, remove the brush holders from it and change the details that are broken.

By the way, there are models whose body can not be disassembled. you just need to remove special plugs through the installation window, after which we change the brushes.

You can purchase these details in any construction store, there are also some models that are sold together with a set of additional brushes. It is important that you do not wait for the complete wear of the brushes. check them from time to time.

Battery circular saw

The main advantage of the battery hand saw is full autonomy, the saw can be used at the unequipped workplace, such a tool is convenient for working on the roof or in the basement, used by landscape designers and artists.

The battery circular saw is equipped with a small-sized light electric motor operating from interchangeable power sources with a voltage of 10-36 volts. The diameter of the saw disk in such samples does not exceed 160 mm. Such a saw is compact, convenient in circulation, insufficient power is noted as a lack, the speed of rotation does not exceed 2.5 thousand. revolutions. When choosing a model, experts recommend paying attention to the presence of a battery discharge indicator.

Classification of the tool

The commodity series is represented by three groups, the classification is carried out according to several parameters:

• Household models designed for mass consumer. The power of the electric drive does not exceed 1.2 kW, rotation speed up to 4 thousand. revolutions per minute, used to work with sheet material and blanks up to 60 mm thick. The tool is compact, convenient in operation, affordable and inexpensive;
• Professional power tool for builders, joiners and carpenters. Such samples have a number of additional options expanding the scope, power from 1.5 to 1.8 kW, the depth of drank from 60 to 90 mm, rotation speed up to 6000 revolutions per minute, weight not more than 5 kg;
• Industrial, with an electric drive up to 2.5 kW, with such a tool, drain lumber with a thickness of more than 130 mm.

Manufacturers have developed specialized compact manual power saws for parquet and furniture work, the depth of cut from such a saw up to 45 mm, power up to 0.8 kW, the diameter of the saw disk is less than 120 mm.

Household and professional models are available to a mass user, this power tool works from a network with a voltage of 220 V.

Smooth launch for corner grinders make it yourself: Scheme. The device of the smooth launch of the corner grinder, connection

The stator of the electric motor is an inductance coil, therefore, there are resistance to the active and reactive component.

When the electric motor is turned on, 7 times more nominal (current consumed during the operation of the tool) and the stator windings are heated. If the stator coil is old, then an interval short circuit can occur, which will entail the failure of the power tool. To do this, use the device for a smooth start of the power tool.

One of the methods for reducing the starting current (IP) is the switching of windings. For its implementation, 2 types of relay (time and load) and the presence of three contrasts are required.

The device of smooth circuit launches

Let’s now look at the type of device for a smooth launch of an electric motor on the KR1182PM1 chip. Below, the figure shows a smooth start scheme.

We will not describe the whole scheme. The only thing to say that it is designed for a three.phase electric motor (380V, 50 Hz). And there are certain features in it, which must be said about.

• Connection of windings in the engine. star.
• Input keys are thyristors that are connected according to a counter-parallel scheme.
• In parallel to thyristors, damping chains (RC) are included in the chain. They are used specially here, the main goal is to prevent false inclusions of thyristors.
• The scheme may also arise switching interference, which are absorbed by varistors (ru).
• There is a power supply in the diagram, consisting of a transformer, capacitor and rectifier. This block is designed to power the installed relay (K). By the way, at the output after the rectifier bridge, an integral type stabilizer is installed, it is it that provides a voltage of 12 volts at the output. In addition, the stabilizer provides protection against overload and short circuit.

If the work is not large-scale and not frequent at the household level, then a power tool with 125 mm adjustment and the power between 600-900 W is suitable.

If a smooth start device stopped working during urgent operation, then the electrical circuit allows you to easily bypass it. If you do not understand something, write to me!

Dismantling of the tool

Almost all malfunctions of electrical disk saws cannot be eliminated without disassembling the device partially or completely. Full disassembly of a hand.based electrical saw using the Interskol unit is performed in the following order.

• Unscrew the adjusting screws of the angle and depth fixed on the sole of the device.
• Press the Reducer shaft button and use a hexagonal key to unscrew the bolt holding the saw disk.
• Putting the lower protective casing to the side, remove the circular disk.
• To remove the support sole, first unscrew the fasteners on its lower side.
• Further, it is necessary to remove the ziger ring with two screwdrivers, a stopping rod on which the sole rotates to change the angle.

Insert the screwdriver into the gap between the hull and the sole, then push it away and remove it.

Next, you should disconnect the gearbox of the unit by twisting 2 screws.

Having removed one half of the handle, you will see the module of the smooth start of the engine and the start button.

On this, the full disassembly of the disk saw ends.

Do.it.yourself disk saw repair

When starting to repair the unit with your own hands, it is not necessary to disassemble it completely to clarify the reasons for the breakdown. Some malfunctions are characterized by specific symptoms by which you can determine the problem and already purposefully disassemble this or that part of the device.

The saw does not turn on

If when you press the start button, the engine of the unit “is silent”, then the first thing to focus on is the network cable, provided that there is electricity in the outlet (connect the device to another outlet for verification).

To check the electric cable, you need to disconnect the handle. This will help to get to the contacts to which the wires of the network cord are soldered. Further, with the help of a tester, call each wire, pressing one probe to the soldered contact, and the second. to the pin of the fork.

If the network cable is intact, then in search of a malfunction do the following.

• Blind the entire chain by the tester, starting from the cable entrance to the unit to the launch button. You should also check the contacts of the button at its input and output with the key pressed. In normal condition, the torn chain should be closed. Call all the wires after the button going to the engine brushes.
• If everything is in order with the conductors, check how much the electrodes of the brushes have worn out. After wear of the electrode 2/3 of the initial size, it should be replaced. Brushes, regardless of how much each of them has worn out, change in pairs.
• If the brushes are in good condition, then, most likely, the engine has failed. In his windings, a cliff or inter.flip.circuit could occur. In this case, it is better to entrust the engine repair to specialists who will rewind the stator coils or anchor.

The engine heats up

The unit can heat up excessively, for example, with its intensive use, as well as when sawing hard wood or the use of a saw disk with a large number of teeth, when the load on the engine increases significantly. Also caused by overheating of the malfunctioning motor associated with the windows of the stator and anchor, which are eliminated only in the service center.

Brushes are burning

Strong sparking from under the brushes is caused by excessive wear, when the spring can no longer press the electrodes to the collector with the required force. To replace the brushes, you need to disconnect the engine cover or remove them through special holes in the engine housing (depending on the power plant model).

Jammed the shaft during operation

This malfunction may happen when for any reason, a stopper is pressed during the tool. It is designed to fix the shaft when replacing equipment and should be used after a complete stop of the engine. Otherwise, the Stop Stop rod breaks down, and its debris fall into the engine, causing jamming. There are frequent cases when this leads to deformation of the anchor shaft. Also, the consequence of pressing on the stopper can be the split of the gearbox body, the fragments of which can damage the gears and provoke their jamming. To solve the problem, you will need to replace the anchor, a stopper leading (large) gear of the gearbox and its body.

In some cases, the gearbox can jam with the complete destruction of the bearing.

The saw stops in the process

The engine stops in most cases cause a cavity worn electrical brushes. Когда контакт между электродом щетки и ламелями коллектора нарушается, происходит выключение агрегата.

Often, when buying brushes for a given apparatus, products with a short conductor connecting the electrode to the plate come across. This conductor is located inside the spring and does not allow it to be completely imprisoned. Когда электрод изнашивается до определенной длины, то прижим его к коллектору прекращается, поскольку этому препятствует короткий проводник. If you, examining the brush, find that it is not yet worn out and the spring is not unclenched, then the part should be replaced.

The gearbox body is very hot

The rapid heating of the gearbox occurs if the shaft bearing is unusable, on which the gear is fixed and the equipment is attached. In this case, in addition to heating, you can replace the appearance of extraneous noises in this unit node. It is necessary to disassemble the gearbox and change the bearing. The gearbox will also heat up if it is not enough lubricant or it is completely absent.

The saw does not gain power

If during the use of the unit you noticed a drop in its power, then it is first recommended to check the voltage level in the network. Sometimes even a slight drop can negatively affect the power of the power tool.

Also, loss of power can be observed with wear of the bearings of the anchor or gearbox bearing. In this case, extraneous noises will be heard, previously not characteristic of this unit. By their localization, you can determine where the problem bearing is located. in the gearbox or engine. To replace bearings, you will need to disassemble the disk saw. How to do this was described above.

If during the operation of the unit is not heard, the engine still poorly develops momentum and power, then pay attention to its collector. Usually on it you can see a circular spark (fire ring). This can happen due to the inter-flip closing of the anchor coil or the accumulation of dirt between the collector lamps.

Expand the engine housing and carefully inspect the collector (the place where the electrodes of the brushes glide). It consists of parallel stripes (lamellas). There is a small gap between them. When this gap is clogged with conductive graphite dust formed during the wear of the brushes, a short circuit occurs between the lamels, and a burning ring around them appears.

The problem will be solved by replacing the worn brushes and cleaning the gaps between the lamellas using a toothbrush, cotton wool and alcohol, followed by polishing the plates with fine sandpaper.