Three-operation desktop machine. Drawing, description

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Three-operation desktop machine. home workshop

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This machine will become your assistant if you are engaged in modeling or just like tinkering. Even at home, it often becomes necessary to cut off the rail and cut it off or sharpen the tool - all these operations are "on the shoulder" of the machine I made. It is small - dimensions 80x180x360 mm, so it is convenient to store it even in an apartment.

The body of the machine is assembled from plywood. The side walls are made of a ten-millimeter sheet, the front (to which the electric motor is attached) is 16 mm thick, and the back is made of a four-millimeter sheet. In order to be able to tension the drive belt by moving the electric motor, I made the front wall inclined (at an angle of 60° to the base). The table of the machine is also plywood - from a sheet 4 mm thick. All body parts are fastened with screws.

The driving and driven pulleys are machined from duralumin on a lathe. Not on axes, they are fixed with two M3 screws each. The spindle of the machine consists of three parts - central and two lateral. All of them are made of steel bar Ø 6 mm. The spindle rotates in two bearings with an inner ring diameter of 4 mm.

I cut the saw blade from the canvas of an old hacksaw for wood. The technology of its manufacture is simple. With a marking compass, I drew two circles on the canvas - one Ø 60 mm (outer diameter of the disk), the second Ø 56 mm (circumference of the tooth cavities). After processing the disk along the outer contour with a trihedral needle file, I cut the teeth and set them apart in the same way as is done on a hacksaw for cutting wood.

The abrasive wheel that I had at my disposal had an inner diameter of 13 mm, so I had to put it on the machine spindle using an intermediate sleeve. It should be borne in mind that there are a great many emery wheels, so the size of the sleeve should be determined according to what you have. Just make sure that its outer diameter does not exceed 60 mm.

Three-operation table machine

Structural diagram of a woodworking machine (click to enlarge): 1 - fan impeller, 2 - electric motor, 3 - table, 4 - guide, 5 - abrasive wheel, 6 - saw blade, 7 - machine spindle (A - central part, B - side parts), 8 - driven pulley, 9 - bearing, 10 - planer drum, 11 - drive belt, 12 - side wall, 13 - drive pulley.

The wall motor is from an electric sewing machine, its operating voltage is 220 V, power is 20 W and the rotation speed is 4550 rpm. In order to prevent the engine from overheating during prolonged operation, it is useful to plant a small impeller-fan on the non-free end of the shaft.

The mechanical planer is a steel drum Ø 26 mm with an M6 inner hole. Grooves 1 mm wide are milled in the drum. Without further ado, I took the knives for him from pencil sharpeners - they were quite suitable for this purpose. In the drum, they are fixed with two M3 screws each.

Author: S.Stanyutin

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