Thanks for the kind words. Well, actually most of the really serious machining (namely the guides for the slides) was done decades ago by the Lorch-guys in Frankfurt/Germany. That really cannot be done with 'nothing', but requires a bigger and sturdier milling machine than I have. The quality of their workmanship is difficult to find these days. I also wished I could work with cast parts, rather than having to fabricate them.
About the scale: sorry, I am so familiar with the size of these machines, that did not think of adding a scale. The overall height of it is 35 cm or 14". for those across the water.
One of the most important aspects of the machine is the flexiblity in holding even tiny work-pieces. The dividing head offers a wide variety of work-holding options using the spindle-tools from the 6 mm-lathe, such as 3- and 6-jaw-scroll-chucks, independent 4-jaw-chucks, ring- and step-chucks, face-plates, as well as the whole range of collets from 0.3 mm to 14 mm diameter.
A very old face-plate (I have newer model too, but this is not refurbished yet)
The dividing head can be positioned at any angle between vertical and horizontal. Direct dividing is provided for by a drum with three rows of 8, 10, and 12 indents respectively. This allows the milling of prisms or pyramids with 2, 3, 4, 5, 6, 8, 10, or 12 sides. A worm-wheel of 40 teeth that is driven by worm on the axis of which is mounted a dividing plate with 90 teeth provides for indirect division of up to 3600. While such divisions are unlikely to occur in practice, the fine angular movement is useful for shape-milling against a schedule table. When the indent is disengaged the worm-drive can be used for round-milling.
Dividing head in horizontal position
Dividing head set at an angle
Worm and dividing plate for indirect dividing
Collets for work-holding are particularly useful, as a wide variety of small parts can actually by milled from round material of various diameters and then sawn-off from the stem held in the collet. The collets, a holder for standard 6 mm end-mills, arbors for slitting saws, as well as a small boring-head are stored in a fitted antique box.
Antique collet box adapted to the use with the micro-mill
To be continued ...
Edited by wefalck, 29 December 2016 - 11:19 PM.