This design was made for precision drilling, even edge trimming, milling, edge machining, etc. In the manufacture of printed circuit boards, front panels of devices and various parts of not large thickness. Therefore, the machine was designed to be used both vertically and horizontally. In the machine, both the proprietary MFI Dremel (200th series) and the Chinese version of MFI (engraver) are securely fixed.
The idea was to use the available chipboard scraps, edging tape, fasteners and the minimum cost of standard products from a hardware store. In general, I tried to follow the principle of "use what is at hand - do not waste money on another!".
In this design was used:
- standard metal mounting bracket 130x50x65x2mm
- standard metal mounting bracket reinforced 90x90x65x2mm
- standard metal mounting bracket reinforced 80x80x40x2mm
- standard metal mounting plate 100x20x2mm
- metal consoles 100x75mm
- metal clamp with nut 1 1/2 48-52mm
- threaded rods M5, M6, M8
- aluminum plate 140x30x2mm
- aluminum tube d 10mm long 216mm
- 16 mm thick chipboard
- guides for of furniture 250x40mm
- fasteners: M4, M5, M6, M8
- furniture ties
Of the tools used:
- circular saw
- drill stand
- cutting machine
- jigsaw
- screwdriver
- files
- clamps
- iron (for sticker edgeband)
Basically, the marking was done on the basis of the available pieces of chipboard immediately in place.
The resulting machine body.
Schematic diagram of the machine.
Housing parts are securely connected with 10 furniture ties 5x50mm. They are not indicated on the diagram since the accuracy of their location is not particularly affected by the design.
The base of the carriage is a rectangular chipboard with dimensions of 250x80x16mm.
The design used furniture guides on bearings. Since the guides consist of three profiles (conventionally: wide, medium, narrow), and the smoothest move without a "chatter" is provided between the wide and medium profiles, when they are installed on the base, the middle and narrow profiles are fixed to each other.
To do this, I drilled through holes in the guides directly through the middle and narrow profiles d 3.5mm.
The guides are fixed on the base through the factory holes on a narrow profile. Screws d 3.5mm long 25mm (2 screws each). Further, with the same screws, the middle and narrow profiles are fixed to each other, while simultaneously providing additional fastening to the base.
The supporting strip is made of a standard mounting bracket 130x50x65x2mm.
The longer part of the corner is cut off, the corners are cut off and a hole for the MFI housing d 19.5 mm is cut out in it. The result was a corner measuring 80x50x65x2mm.
The corner is fixed on the base with four M5 screws.
The hole for the MFI holder is made of a slightly larger diameter than the 8 mm mounting pin d 9.5 mm (for alignment).
Holder design, which was used as a standard metal clamp with nut 1 1/2 48-52mm.
From a standard mounting bracket with dimensions 80x80x40x2mm
an emphasis was made of the lever mechanism measuring 80x35x40x2mm, in which an additional hole was drilled.
The emphasis is fixed to the base through a gasket made of chipboard with dimensions 80x40x16mm with three M4 screws.
The locking panel made of chipboard with dimensions 185x108x16mm is fixed to the base with two M5 screws through a gasket made of chipboard with dimensions of 60x100x16mm. The holes in the panel are made of a slightly larger diameter of 6.5 mm (for alignment). A stop for the spring is attached to the locking panel with two M5 screws, as a standard fastening reinforced corner 90x90x65x2mm.
Carriage assembly.
The carriage is attached to the side panels of the housing with four M4 screws.
In the return mechanism, an aluminum tube with a diameter of 10 mm and a length of 216 mm was used as a guide. A sleeve with a 5mm thread is rolled at one end of the tube. As bushings for the spring used parts from the transportation fasteners from the washing machine.
Installed return mechanism.
The lever lever of a metal tube with a diameter of 13 mm and a length of 260 mm is made of the leg of an old folding camping stool. As a traction, a standard mounting bar with dimensions of 100x20x2mm is used.
The axles used are M4 screws. The screw fixed to the stop (the upper axis of the rod) also serves as a stop for the lever, so a piece of rubber tube is dressed on it.
The support table for drilling and milling is still made in sizes 200x120x16mm.
The cutting support table is made of chipboard with dimensions 220x80x16mm, a piece of plywood with dimensions 220x90x9mm and two consoles 100x75mm. Plywood is coated with colorless varnish ХВ-784.
The adjustable guide stop is made of an aluminum channel channel with dimensions 15x15x15x1.5mm and 220mm long and two screw pins with a diameter of 5mm. The protruding parts of the consoles have not yet been cut. additional fasteners will not damage. I do not touch the excessive length of the studs either (there are various ideas that increase the usability of the machine).
Both tables, for the purpose of convenient replacement, are attached to the machine with screw furniture ties with a diameter of 5 mm.
Rubber legs are glued to the bottom panel of the machine body. 2 mm thick rubber strips are glued on the back side of the machine. If necessary, when working in a horizontal position, the machine is conveniently fixed on the table with a clamp.
To adjust the accuracy of the carriage stroke, two threaded rods with a diameter of 6 mm were used. For reliable fixation of the carriage in the desired position, it is sufficient to use only the upper stud. The carriage is fixed by clamping the locking panel to the side panels of the machine body.
For convenience, two nuts - “turntables” are installed on the studs. The full stroke of the carriage is 120mm.
In order to prevent possible chipping of sawdust in the working holes of the product, they are treated with colorless varnish ХВ-784. After the final assembly of this design, no “bumps” of the carriage relative to the body have been observed so far.
The machine, in my opinion, turned out to be a bit overall and weighty.But the vibration is well damped.
Unfortunately, there was no specialized saw blade for chipboard on hand. Therefore, not significant chips of the laminate are visible. In the future, to increase the convenience and versatility of the machine, the installation of additional devices is possible.
If something is missing in the description, I hope these nuances can be considered in the submitted photos.
If you need additional information, write to the post office, I will try to be sure to answer.
Feedback, suggestions and comments are very welcome.
May 2019