Desktop milling machine. Drawing, description

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Desktop milling machine. home workshop

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The presented desktop milling machine will be useful for craftsmen who like to work with wood to obtain relief surfaces, various geometric ornaments on workpieces, as well as cutting grooves, grooves, nests (both simple and curly), etc. The machine consists of two main parts: a base with guide posts fixed on it and a spring-loaded platform on which the electric motor is mounted.

The base is made of plywood 20 mm thick. A through hole with a diameter of 60 mm is drilled in its middle, and on the sides there are a pair of diametrically opposite sockets for guide racks. My racks are brass, but they can be made from any ordinary steel.

They are attached to the base with M4 screws with wide washers. In order for the washers to sink into the base, shallow cylindrical recesses are milled in it coaxially with the sockets. In the washers themselves, the holes are countersunk for countersunk screw heads.

The platform is made of duralumin sheet 8 mm thick. A number of through holes were drilled in it: the central one - with a diameter slightly larger than the diameter of the motor shaft; on opposite sides (on the sides) - a pair of M12 threaded holes for guide bushings and four more smooth ones with a diameter of 5,2 mm in the corners - for screws fastening to the electric motor platform.

The guide bushings, like the racks, are made of brass, which, however, is not at all necessary. It’s just that both of them were available and suitable for a milling machine with minimal modification. By the way, in the photo of the front view, even without eye strain, you can see that the bushings are slightly different from each other. But this does not affect performance. Bushings can also (and even desirable) be made of steel. In one of the bushings, I made a side threaded hole M6 for the locking screw. This screw keeps the platform with the electric motor in a stationary or transport state and sets the maximum cutting depth during operation.

Table milling machine
Machine front view

It is not difficult to assemble the machine, the main thing is to choose a suitable engine for it - compact, high-speed, powerful enough, powered by a household electrical network with a voltage of 220 V. I managed to find one - from an old manual electric planer - small-sized, in a plastic case. Its power is 600 W, and the number of revolutions is 10 per minute. Motors with a speed of more than 000 per minute should not be used - the highest centering of the tool is required, and the chips fly far.

The engine also had to make a handle. I cut it out of thick plywood (the same as the platform is made of), so to speak, in place or, more precisely, in my hand. Therefore, I give only its overall dimensions. In the handle itself, on one side, I hollowed out a recess for the electric motor switch and a longitudinal groove for the power supply cable and the wires leading to the electric motor. After installing the switch and laying the cable with wires into the handle, I covered the recess and the groove with a cheek-pad made of 4 mm plywood, cut according to the configuration of the handle, and screwed it with countersunk screws. The handle is fastened with a self-tapping screw to the motor housing and riveted to the platform through a bracket-plate.

Table milling machine
Desktop Manual Electric Milling Machine

Desktop manual electric milling machine (click to enlarge): 1-electric motor U = 220V, N = 600W, n = 10 rpm (from an electric planer); 000-handle (plywood s2 and s20); 4-start button of the electric motor switch; 3-power cable with plug; 4 - collet chuck; 5-wood cutting tool (milling cutter); 6 - base (plywood s7); 20 - guide post (steel, circle 8, 12 pcs.); 2 - spring (twisted compression, 9 pcs.); 2-platform (duralumin, sheet s10); 8 - guide bushing (steel, circle 11 pieces); 25,2-platform lock (M12 screw); 6 - fixing the guide post to the base (M13 countersunk screw, 4 pcs.); 4 - broadened washer (14 pcs.); 4-fastening of the electric motor to the platform (M15 screw, 5 pcs.); 4-mounting the cheek pad to the handle (screw, 16 pcs.)

Springs - twisted compression (normally stretched), it is desirable to choose the same, moderately rigid - if only they would hold the platform with the electric motor on the weight.

At the end of the motor shaft, an M8 thread is cut for attaching a collet chuck, into which the desired replaceable cutting tool (cutter) is inserted and tightened.

To avoid injury and breakage of the machine, do not use it for processing metal blanks, but you must work with safety glasses.

Author: A. Alibekov

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