What you noticed in those photos of the Spindle Sander was that it was standing on a 2-in-1 machine with a generous processing capacity:
A jointer over the table, working width up to 500mm
A thickness machine, working width up to 400mm, which is below the jointer table and which work in reverse direction of advance motion of the material.
It's a machine which I designed more then 10 years ago (probably in
2002). Some components were made by friends, and all
other operations (welding, drilling, various metal manufacturing etc.)
and the whole assembly were made by me.
Some technical data:
1. Jointer motor: 230V, 2,2kW, 3000 rpm
2. Advance motion motor for thickness: 230V 1.5KW, 1500 rpm.
3. The planer thickness adjustment (under the table) is done by an elevation adjustment of a table. There are 4 square threaded screws fixed under the machine rails, equipped with 4 chain sprocket nuts. The adjustment table is based on these screw nuts, on which a Gall chain is passed over. By turning only one nut, the chain determines turning of the other 3, so all 4 nuts are rotating simultaneously inducing lifting or lowering the table, bringing it closer or farther from an shaft with 3 knives, depending on the thickness of the material to be planed.
4. The feed mechanism is by a serrated roller at the infeed and a smooth roll at the outfeed (after the cutter head). The synchronous rotation of these two rolls is done also with a chain, driven by a 1.5KW motor through a worm gear (donít remember exactly what gear ratio has, there are so many years since I designed it, but I think is 1:40). The motor and the worm gear box have two-grooved V-belt pulleys of different diameters and so I can get four different feed speeds for an optimal adaptation to different hardness of the wood to be planed.
The machine works very well. It is about 95% complete. The only thing it needs is a suction system for chips and dust, which, unfortunately, it spreads all around my workshop.
Six months later, lucian sent me When Lucian sent me photos of his his dust collection system for the jointer/planer:
I would like to share with you the way I solved the problem of dust generated by my homemade jointer and planer -- dust which spread throughout my workshop and which was a serious threat to the health of my lungs.
My homemade jointer and planer constructions determined the manufacturing of two completely different dust and chips collectors, one for jointer and another one for planer.
Making the collector for planer functioning mode was simple, it was basically a surface that make transition from rectangle to circle with offset and angle (used material was 0.3mm galvanized sheet) and a cylindrical connector (0.7mm galvanized sheet) for coupling the exhausting hose. The assembly was done with a 500 W electric soldering iron by Sn-Pb soldering alloy.
More complicated to make was the collector for the jointer. Because of low height (130mm is the maximum thickness available), I had to make this collector from two parts, otherwise mounting between the two feed rollers would have been impossible. Basically, after introducing the smaller piece between rollers and lifting it, the larger piece (which is made of three parts: a rectangular duct, a rectangle to circle transition and a cylinder) is positioned just below the smaller piece and rising the laminated table, the upper part penetrates inside the lower part by 20mm, becoming a single unit. The materials used are the same, 0.7mm and 0.3mm galvanized sheet and Sn-Pb solder.
After testing it, a small amount of dust and chips escape to the melamine table when the machine works as planer, but in the jointer mode the dust extraction is total!
Greetings from Romania!