How to independently carry out repairs Bulgarians ?

Repair Bulgarians do not start, do not understand the mechanism

Core nodes in angle grinders of all three: an anchor, a stator and a reducer.The armature is a rotating member, and it comprises a coil is required to generate the torque is transmitted to the gearbox.The stator also includes a winding divided into two parts.Electricity is supplied to one of them, through the brush (carbon block) goes to touch her at the moment of land anchors, on the other portion of the current node goes through the second brush on the next sector of the stator.

If the connection is OK, the armature rotates through the gears and spins the disk. reducer is needed in order to contain the rate of speed within a certain range .As you can see his hands bolgarok repair can be quite simple, but need access to nodes, so first unscrew the screw in the rear portion of the casing (ibid, frequently, the speed controller is located).

the screw is usually held a small plate made of plastic, without which the housing will move easily.You will see all of the above components, except for the gearbox, it is hidden under the metal cap, which takes up the bulk of the heating mechanism.Remove the gear unit can, by unscrewing the 4 screws, and you're got to mechanical grinders.

How to Repair grinders, if the problems in the electrical part?

Even without electrical skills, you will not have to suffer the question, how to repair grinders, if you know what does not work.The options may be relatively few.In particular, if the anchor area seen sparks during operation there is a characteristic smell, the casing heats up and the audible light cotton - the reason probably in the reservoir - the main anchor node.It looks like a plate located around the rod, it is reduced to him all ends of the coil, and their main purpose - to contact with the brushes.

Since we already know how to get to the anchor, remove the brush from the special grooves in which they are held coil springs (these can be seen in the clock mechanism).This should be done when removing the gearbox.Then take the anchor gear for transmitting rotary motion and pull over.Try not to disrupt the rolling bearing mounted on the other end of the axis and flush in a special recess in the case.Clean the manifold if it is contaminated, if the bankrupt, have set a new anchor.

If all electrical components grinders are serviceable, but burned a speed control unit, usually abundantly covered with epoxy, replace it with a conventional dimmer sufficient power by connecting it in series with angle grinders.

If when the drive starts to gain momentum and accelerate too much, particularly on the stator winding interturn fault occurs.Stator Repair grinders begin with cutting the end windings, the remains of which we take out.Next, make a new coil with the help of a template, sandwiched between two large plates on the axle, which can be inserted in an electric drill.The main thing - to achieve an identical number of turns made with proper density and thickness of the wire stand.Insert the two coils in the stator housing, the findings do from the same winding wire, insulated flexible ducts corresponding diameter.

Repair gear grinders - Learning Applied Mechanics

Remember how 4 spun gear screw?Below them you will not find anything special, just a sea of ​​grease, bearings and gears.In models of up to 1100 W are generally used spur gear mounted on the anchor, but with more power grinder, for example, 1500 W, require helical gear wheels.Both versions have a conical shape, since the gear shaft axis intersects with the rotor shaft, and the transmission is only possible angle teeth grip.

drive speed reducer is regulated through a certain number of teeth on the pinion .For example, if the gear wheel armature 10 has teeth 41 has a gear, the rotation of the armature at a frequency of 32,800 rpm, the drive will issue only 8,000 RPM for the same time.As a rule, repair the gear grinder is only replacing the gear.If the broken disk gear, then lift it to replace it will be very difficult in the gearbox assembly is best secured.

However, if you include the tools lying around universal puller with a fairly thin legs, problems should arise.With anchor gear shaft should turn more easily, it is always kept on the right thread, but do not rush to unscrew, first wrap with a cloth so as not to damage the teeth of a wrench.And do not feel sorry for grease the inside of the gear unit, sometimes it seizes the very reason that the lubricant is partially dried, partially smeared over the surface of the metal casing.