How to make a Grinder out of a drill

Grinder from a drill

Every real man knows how bad it is without tools. We have to somehow get out, make do with a hand hacksaw, chisel, file, something kolupat or tapping out for a few hours.

A specialized tool is just the thing. We took a tabletop, marked the risks with a caliper, held a straight line for the trimmer, and sawed everything with a jigsaw in one movement. Smooth, beautiful, and most importantly fast. But today we are not talking about a jigsaw. Let’s make with our own hands and at home a more interesting device. Grinder.

Grinder is a tool, or rather a machine, by means of which household tools, knives and scissors are sharpened. In this case, the quality of sharpening is not inferior to the factory one. This tool is a must for any “garage technician”. And yes, it is not only suitable for sharpening, but also for sanding wooden, metal and stone parts. It is also used for edging Fiberboard and Particleboard.

Tags: Grinder with grinder, Grinder with their own hands, Grinder with their own hands sizes, Grinder with their own hands drawings

It is possible to turn the grinder horizontally?

Interesting. But the bearing platform for the workpiece is welded by cantilever, the cantilever is of considerable length and there is also a gap in the sliding joint The rib is needed. Yeah and the base of the stand is a little liquid. Well, just visually.

make, grinder, drill

(Three, so far seems good, will play the game will be welded))) I am testing the whole thing

The idea is good, but here I do not know, I do not have such a machine, what is the stop under the belt in the place where the workpiece presses on the belt? I made a special pad under the belt, but I never made an underpinning. I am sharpening knives. I will do.

It’s just a plastic housing. Today I milled a semicircle for a drill rim)) It’s beautiful, I can’t get enough of it)))

Let me ask you. and what is the “Grinder”.and what to eat it with.

The machine with sandpaper tape. I just wanted to and I made myself like this.

How To Make a Grinder With Drill Machine at home Creative Abhishek

You did it. Well done. as long as you like it yourself. from my experience, it’s all nonsense. made a similar one out of a grinder, made a drill stand all bullshit. you want to work properly with pleasure-buy a normal machine. For these reasons, I got a small Grinder at 1.1 kw and I’m gonna buy a drill.

I agree! I made this one purely for the soul. I have a facing machine. I can’t get enough of it, it’s got good accuracy. But I will also make a drill myself))) have long dreamed of

facing machine as an example. drill is better to buy. But this is IMHO. Good luck!

I will try first myself, very long been going to do it) already have all the supplies, should turn out interesting

You did it, well done. as long as you like it. I’ll tell you from experience, it’s all nonsense. did a similar thing with a grinder, made a rack for a drill all bullshit. if you want to work properly and have fun, buy a normal machine. For these reasons I got a little Grinder for 1.1kw and going to buy a drill.

Well, this is if you work, and if you need it once, well, twice a year, it will want something in the garage to sit and rummage, for example, the rains come, there’s another typhoon coming, which we have almost every year, or vice versa happens you in the garage did not drive, carried away by something else

Grinder with my own hands part 1.

Hello all recently, the word Grinder has become very popular, but not many people know what it is and even what he can do. In our beloved youtubchik there are just a lot of videos on the subject. It’s better to see for yourself what kind of a miracle it is.techniques. I studied this issue a few years ago and even wanted to make it, at 610 tape even found the material, the plate, the engine from a washing machine, detailed drawings but later abandoned the idea.’s not serious! If you do Grinder, at least on a 1230 ribbon. As a result, I found a bunch of YouTube videos with really good options. These people make grinders for sale and so in the course of their competition “sharpened” their knowledge and skills on their products. Well, I just need to take the best moments of their creations and translate them into my machine! Links to the clips to throw here does not make sense. There are a lot of them. I will write a few names, if you are interested, type the name in the search and you are on their channel. I do not know who was the first and who stole the layout of these grinders, but the first as far as I know was Chapay, by the way my countryman. Lived 100km away from me. The man himself is no longer alive, but his work lives on. There is a website, there are his machines for sale. It is clear that the progenitor of grinders (belt-sander machines) are the Americans, but our craftsmen from the industrial machine, made a home, table and balcony version))) Then there are many interesting suggestions fromIron Man, Alexander Shengur, Favorite 156, Andrey Yermolenko, Rustam and others. These people are engaged in the manufacture of various grinders professionally. The main mass of the grinders engaged in knife making and this is the most necessary machine at the present time for this business!As a result, after studying this machine completely down to the screws, decided that, I can do it without various lathes, mills, surface grinders. So I began quietly, since autumn, to look for material for this case. And at the same time to look for a turner, to make rollers and a pulley for the machine. If you want everything seriously, then without a turner here is no way!As the saying goes. he who seeks, he will always find! (Of course suffered with the search for a turner, but it is found at work, a friend))). Of course not everything is smooth, there are flaws on his part. He did 1.5 months on my drawings, between his work. I do not know how all this will work, but the alignment and minimum runout.that was his main concern in the making.Also at the reception of metal were bought plates 400h400h14. 3 pieces.

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I found a 1.1 kW motor.3,000 rpm. Since frequency converter is an expensive device, and therefore do not plan to use it. I have another motor 1.5 kW 3-phase, but the speed of 1500, but this is not the coat. RPMs aren’t right. But you can always convert it to a frequency converter.

Lapses of the turner on the pulleys are visible to the naked eye)))) Gave him two blanks at 120 and 160 mm in diameter. It was necessary to bush them and completely turned without runout. He screwed up something there, he welded with electric welding, but what the hell.this weld did not grind. In short x.з. The pulley at 120 seems to run quietly without vibration, but at 160 the engine vibrates very strongly. Although the runout can not be seen, I have an arrow indicator, I still can not check. This whole thing was negotiated through a friend. He did not even take money for his work, but I certainly gave him 1 tr. In the end, of course, I’m counting on the fact that it’s all in the not-through welding and fix it all myself or have to give it another go at resharpening!

According to the rollers everything seems to be normal. Two straight pulleys and one barrel adjust the belt. The drive pulleys are straight, although many people make barrel rollers! Ordered two pulleys, so you can change the speed of the belt, t.к. there will be no frequency converter.Next, it was necessary to start with something to make a grinder. I decided to make a machine from a series of Rustam GR-1


It seemed to me more interesting and orange))) So I started with marking the bracket (rocker). I decided to widen the rollers by max, so that it would be possible to grind longer workpieces in horizontal position afterwards. And I also increase the usable depth. The machine will be rotary.

You will need a

Wooden workpiece clamped in a vice and circular saw on the marking sawing sawing the outer profile. Use spiral and two feather drill bits (30 and 14 mm) to make step through hole.

We fix the wood workpiece on the shaft of the emery drive, put it into rotation, and using a flat chisel we grind to the desired diameter, form the ends and chamfer.

make, grinder, drill

Use a drill mill to make two identical holes in the 4-mm-thick steel plate. We insert a round tube into one of them, align it vertically, fix it with a magnetic fixing and weld it to the plate from the back side.

From above we press flush bushing with thread in the center into the tube and give the plate with an angle grinder to a required shape, round corners and remove burrs.

From the same plate cut another element of the required shape and size with two holes. On it we will mount the tensioning pulley. To do this, use a vice to press a small rectangular plate with a hole in the center onto the end face of the second tube and weld together.

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Weld a metal rod symmetrically to the narrow side of the rectangular plate with a tube. At its ends we put two identical bushings that we weld to the second plate.

Let’s put on both tubes one by one big and small washer, then four bearings 6204 and fasten them with bolt and washer from the end. Join the two parts together with the bolt and nut. Put the tensile spring on the grooves of the plate projections.

Fasten the assembly to the grinder drive housing with three bolts. Put a washer and a wooden roller on the end of the drive shaft and fasten it with a left-hand threaded nut.

Slip a ring belt over the rollers, pressing the tensioning roller by hand. Rotating the belt, use the adjusting screw to center it. Turn on the drive and make sure the belt doesn’t slide off the rollers. After the pressure plate and the work table are installed, the Grinder is ready for work. It can be used to grind wooden, plastic and metal workpieces, including tool steel, and to sharpen cutting tools.

Please remember that while working with the grinder you have to wear safety glasses and if possible use a dust extraction device.

Grinders from Chapay

A large number of belt sanding tool designs are currently available in the literature and on the Internet. Some of them are recognized to be more successful, others are difficult to implement.

One of the successful developments are recognized the design of grinders by Chapay. Developer Andrey Chapay offers professional tools and versions for the home workshop. One of the significant advantages of these models is a wide range of processing angles. To solve this problem, the author proposed the original design of the turntable. Such a design is the basis for all grinders of the professional line. These include: GC 10, GC 12 and GC 16. They have received quite high praise among specialists. To extend the functionality, the author has equipped his products with the device for disk fastening. The pivoting frame assembled from two 12-millimeter thick metal sheets provides high reliability of the whole tool.

In addition to professional versions, Chapay has developed mobile versions (HCh610-63 and HCh610-71). They are convenient in operation and demonstrate good consumer characteristics.

Homemade Grinder with a motor from a washing machine

With the size of the driving pulley 70÷100 mm, the motor for the grinder must spin up to at least 3000 rpm. According to their characteristics this requirement (even if not fully) correspond to asynchronous electric motors from old automatic washing machines with power not less than 300 W. These are simple enough, reliable and unpretentious devices, which are one of the most common used electric motors. Their output shaft is threaded, on which the pulley for the grinder drive can be easily mounted.

When using the collector motors from washing machines of the next generation can not do without a separate speed regulator, because their speed is usually in the range from 11 to 18 thousand. rpm. These compact and powerful devices have a disadvantage: The brushes wear out quickly with constant use under load.

In the video. Below) craftsman demonstrates Grinder made by his own hands with a motor from a washing machine, convenient tensioning device, electronic speed controller and rollers on bearings with 65 mm diameter (tensioner from “Gazelle”). The obtained quite serviceable variant with good-quality and functional support table, which rotates by ninety degrees and moves along the guide rails.

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Grinder construction diagram

The difference between the belt grinder and the usual grinders is in the use of grinding belt, not disk. This allows you to select the desired degree of grit and handle large areas.

The abrasive rail installed in the tensioning device is moved by rotation of the drive shaft. Grinding is performed with the surfaces of the workpiece and the moving tire in contact.

The design of grinders does not differ from the construction of stationary disc machines. Main elements:

  • Drum system. Designed for mounting the busbar. Consists of a drive shaft and various output shafts.
  • Bed. Element design depends on the intended use for a particular type of material. For wood we use a lighter frame, for metal we use a more powerful one.
  • Tension system. Used to keep the bar permanently tensioned.
  • The electric motor and the control unit. As an additional element, a belt-driven speed increase/decrease unit is included.

We need

Let’s start with the roller axles. Cut 50 mm pieces from the steel pipe. Remove the chamfers, countersink and counterbore for the thread tap on both sides.

Cut off 35 mm from the plastic pipe. Use a sickle-shaped knife and emery paper to work on the edges. Press two shielded bearings into each one.

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Assemble the roller by inserting the axle into the bearing holes. On its ends put the washers with a diameter larger than the plastic tube, and secure them with screws, screwing into the threads of the axle. Cutting out washers for rollers from aluminum sheet with a core drill bit on a drilling machine. Machining them by removing burrs and chamfering.

Make the stand from an unequal-armed aluminum angle. For this purpose, on both sides of the large flange cut to different lengths. Rounding corners and surface treatment with polish applied to a piece of cloth.

On the smaller flange of the stand mark the place of installation of the roller, on the larger one. of the electric motor. We make the step drill hole under the ledge of its body, next to the hole with an ordinary drill. two small holes for fastening.

Using the same angle we make a working platform for installation of blanks. Bevel the smaller flange on one side and round off the other. Mark the contour of the oblong longitudinal hole. On the post, for fastening the work table, we drill a hole and reinforce it with a rivet with an internal thread, using a riveting tool.

Use a drill and a file to make an extended hole on the flange of the work table and fasten it to the rack by screwing a metal device into the rivet thread. Mark on the stand the horizontal position of the working platform.

On the stand from above along the marking, drill a hole to install the intermediate roller. Assemble it as we did before and fix it to the rack with the short screw. The roller should rotate freely on the axis.

Using the same corner, cut out the base and mount the rack vertically closer to one of its edges, passing a bolt through the holes in them and securing with a nut.

Attach the 775 motor to the rack from the outside with two bolts. Press the drive roller onto the shaft, tapping on the end face with a hammer until it sits in place. Apply voltage to the motor terminals to test the drive.

Screw it to the rack at the desired location.At the end of the bracket mount the lever with bolt and nut, using the hole in its center. Fix the idler pulley to the hole at the top end of the arm, and fix the bolts to the lower end and to the strut, using the nuts. On them we put the rings of the stretching spring and, so that they do not slip off, screw nuts with washers.

The simplest Grinder without welding and turning from a washing machine motor

We fix it with two screws on the pads. It has a 220v input and two motor outputs, with terminals for a variety of wires: stator, armature brushes, hall sensor, tachogenerator, etc. д. For proper connection, find two wires each from the stator and rotor brushes. Connecting together one wire each from the stator and the armature brushes. We connect the other pair of wires to the voltage regulator. Before the regulator we install a switch. This completes the electrical connection.

Make a stop for the emery belt from a mounting angle, the edges of which should be rounded to prevent the belt lock from catching.

Rectangular surface of the undercarriage is cut out of sheet metal and glued to the chipboard. Make the diameter of the mounting holes slightly larger than necessary for the bolts. This is needed to adjust the angle between the stop and the armrest. We make the driving roller from two propylene pipes of diameter 20 and 32 mm.

make, grinder, drill

Choose a large pipe with an inner diameter also equal to 20 mm. You can connect the pipes in two ways: by gluing or fusing.

Use the second method. To do this, simply press a block of wood against the end of the roller as it rotates.

Stuff the whole assembly on the motor spline shaft. The connection is secure with minimal runout. For the driven roller, select two bearings and, depending on the outer diameter, a polypropylene pipe of exactly the same inner size.

The bearings are flattened with a steel tube to relieve the side load. On the inner end of the roller put a ring cut out of a coupling of the same size, which will serve as a stop.

Make the diameter of the holes in the housing larger than needed for the stud. Such a solution would allow the adjustment and tension of the sandpaper tape.

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