Homemade Grinding Machine With Disc Sander || 2 In 1 || Grinding Wheel || Disc Sander
October 30, 2018
A grinding machine is used to drive abrasive wheels. Apedestal grinder is a similar version of grinder that is mounted on a pedestal. These types of grinder machines are commonly used to hand grind various metal pieces, cutting tools and perform other rough grinding. It may be used for sharpening cutting tools such as tool bits, chisels, drill bits. Alternatively, it may be used to roughly shape metal prior to welding or fitting. In grinding machine a wire brush wheel and buffing wheels can be interchanged with the grinding wheels in order to clean and polish work pieces.
A disk sander machine is used to smooth materials such as woods and plastics. It is also used to remove small amounts of waste particles. The material is carefully and lightly pushed against the rotating disk and at the same time moved from left to right. Most disk sanders have an adjustable table. This allows the work piece material to be sanded to an angle. Releasing a locking nut allows the table to be adjusted, the locking nut is then tightened keeping the table in the position. This can be very useful. However, the gap between the table and the disc increases as the angle of disc is increased. This means that greater care must be taken when sanding work piece to produce an angle.
From this grinder with disc sander machine you can make precise angles in wood and metal. With this machine you can produce brilliant outer edge curves, and very accurate circles. You can accurately and quickly remove material and flatten off stock that's too small to be safely planed. You can sharpen tools, tidy up rough edges, square up, and do extreme toenail manicure.
Plywood base (21.5” * 18.5”)
Metal sheet (21.5” * 18.5”)
(3*1*A) V-belt pully
(A-23) V- belt
½” arbour (grinder thada)
Base for arbour (thada) (6” * 5”) 4” height
6” Grinding wheel
Metal pieces for grinding wheel support
Round plywood for disc (D-7.5” and D-6”)
Plywood for base table for disc sander (8.5” * 7” for base)
2 Nos. L- section channel (7” length)
4 Nos. 5/16” bolts (6” length) with washers and nuts
4 Nos. 3/8” bolts (1” length) with washers and nuts
How to make:-
Step 1:- Make a base
For accurate result it is necessary to have a very strong solid base, good quiet, smooth and vibration free running, along with a perfectly flat and accurate work table with a parallel mitre slot.
I have used plywood of 21.5” * 18.5” size with metal sheet for strong solid base. Sheet metal is increased the strength of the base.
Step 2:- Mounting the motor
This grinder with disc sander machine is run by 0.5HP single phase induction motor. It went really well with very less vibration or noise. This motor is running at 1450rpm.
I did some modification. I reverse the direction of motor. In this machine the grinding wheel is running so it is necessary to reverse the direction of the motor, so we can work properly on grinding wheel.
The motor is mounted on the base by using of 4 Nos. 3/8” bolts of 1” length with nuts.
Step 3:- Mounting the arbour (grinder thada)
The arbour (grinder thada) is mounted on the arbour support at the 4” height from the base. It is mounted on arbour support by using of 4 Nos. 5/16” (6” length) bolts and nuts.
A major part of this grinding wheel with disc sander is arbour (grinder thada). The grinding wheel and disc sander, both are run on the arbour, so it is necessary to mount arbour properly on the base.
Then after, attach the grinding wheel on the arbour. I also make a grinding support for work properly on the grinding wheel. The grinding support is made from metal, shown in the image.
Step 4:- Mounting the disc sander
Next step is mounting the disc sander on other side of the arbour. Diameter of the disc is 7.5”.
First of all, cut a circle from plywood of 7.5” and 6” diameter by using of jigsaw machine. It is easy to cut a perfect circle by using of jigsaw circle cutting jig. Attach the sanding paper on it.
After that, i mounting disc sander on the arbour by using of screws.
The last step is, make a worktable of disc sander. A major part of the disc sander is a work table. Its basic function is to remain nice and solid at a set angle relative to the spinning disc. Worktable is made from plywood, also I attached a sheet metal on the worktable for better strength.
I also attach the wire and ON-OFF switch for easily on and off the machine.
Step 5:- Testing
Now, it’s time to test the machine. First I test the grinding wheel. The Grinding wheel is properly grind and finish the work pieces that must show high surface quality and high accuracy of shape and dimension. It may be used for sharpening cutting tools such as tool bits, chisels, and drill bits. Alternatively, it may be used to roughly shape metal prior to welding or fitting.
Also test the disc sander. The disc sander is also properly worked.
For better understanding, watch the video given below.
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