Making convenient grinder hands - photo and video

This machine tool (in the full sense of the word) can not be called.However, the thing desired sector, and sometimes - simply irreplaceable.The device is so simple that collect grinder afford anyone with his own hands.

First you need to decide for what purposes need this machine, and that we will sharpen - axes, knives or anything else.Depending on the diameter of grinding wheels are used, is selected and engine power.On the Internet, all the articles recommend the use of the engine from an old washing machine.This - the basis of the entire machine.However, we must understand that by whatever mechanism the engine is not used, its capacity of 1 - 1.5 kW will be for domestic use is enough.

How to assemble the machine

• selected support (platform) for the engine.It must be secured, since it is turned on the rotor develops a fairly large turnover.It is recommended to make mounting with screws with a diameter of at least 8 mm.Engine location should take into account the convenience of using the machine and replace the grinding wheel;
• connection is best done through a magnetic starter.It is understood that the single-phase power supply 220.It is necessary to calculate the matching of engine power and the diameter of the wire, a suitable outlet.It is better to make the power supply directly from the circuit-breaker on a separate line.
• main problem is how to secure the emery wheel on the motor shaft.Circles are different, and the diameter of the holes and the motor shaft can not match.In this case it is necessary to pick up a sleeve, and has put on her stone.On the shaft to be threaded.As if the circle is fastened to the rotor hub with or without it, it is necessary to fix;
• installation of stone guard.It is made of thin sheet metal or thick Plexiglas in a special holder.

order of assembly of the grinding machine

nut - washer - whetstone - a washer (if the sleeve is placed, one plays the role of the edge of the second disk) - a nut (addictive) - another nut (fixing).

Special mention should be connected starter - they come in different designs.We need to have a minimum of three contacts normally open (NO).Its winding is connected to the phase line through two series-connected buttons.One - normally closed (NC), the other - with HP.with NO contact button will be the book."On", respectively, the second - "Off".Bk."On" is placed in parallel with one pair of HP starter contacts.

Pressing book."On" in the coil is energized, and starter contacts are closed.One of a pair of shunts book."On", and when it is released, voltage starter is not removed.Press book."Off", we break the winding supply chain starter "releases" the contacts and the motor stops.As you can see, there is nothing difficult in making this a useful device for the household.