MICRO LATHE



I acquired this micro lathe in March 2008. This little machine is UNIMAT, model DB-200 and was made in Austria back in 1950-70's.
Here is nice web site describing history of this little gem.
I will be adding pictures of attachments that came with the lathe as well as drawings of attachments that I am planning to build.

My UNIMAT DB-200 My UNIMAT DB-200



ELS - Electronic Lead Screw

This is a very valuable addition to the micro lathe. Developed by John Dammeyer (more info on his web site ) it provides
many capabilities found on large lates. With the ELS, you will get ability to cut ANY thread (imperial, metric, special...)
but not only that, you will also get the following:

- spindle RPM read out
- SFM read out
- power feed for Z and X axis
- DRO for Z and X axis
- ability to cut precise tapers
- pre-defined tapers:
- Morse taper #0, #1, #2, #3, #4, #5, #6, #7
- Jacobs taper #0, #1, #2, #2A, #3, #4, #5, #6)
- IT taper, ER taper, R8 taper, 5C taper, 3C taper
- rapid traverse for Z axis (i.e. when you need to move tool away for measurement)

Below are some pictures, of my implementation on the Unimat as well as drawings of parts necessary to do the modification.
This is still pretty much work in progress, I will add more and better pictures as I progress.

ELS X-axis stepper ELS Z-axis stepper ELS controller Semi-finished ELS controller ELS spindle encoder ELS on UNIMAT DB-200 - PDF file
Extended bed way Z axis - PDF file Stepper motor bracket Z axis - PDF file Stepper motor bracket X axis - PDF file



UNIMAT - Power feed with a stepper motor

Bellow is a picture of possible arrangement with a stepper motor mounted behind the lathe

Power feed arrangement



OCLE - Oscillating column engine

I am planning to make detailed set of drawings for this engine that can be made on Unimat.
It is based on the drawings for River Queen OCLE engine published in the Edelstaal Technical Institute Booklet No. B-100.

ELS X-axis stepper OCLE engine video OCLE engine valve video



Two Cylinder Vertical Steam Engine

This model is based on the article by C.W.Woodson, published in January 1953 issue of Popular Mechanics Magazine

2 cylinder steam engine 2 cylinder steam engine 2 cylinder steam engine video 2 cylinder steam engine video



Single Cylinder Horizontal Steam Engine with reverse

This model is based on the chapter 43 of Elmer Verburg's book Elmer's Engines

Single Cylinder Horizontal Steam Engine with reverse Single Cylinder Horizontal Steam Engine with reverse Single Cylinder Horizontal Steam Engine with reverse - video




LEGO single cylinder, double-acting oscillating engines

Here is couple of single cylinder, double-acting oscillating engines that I built with my son Adam one afternoon. Powered by vacuum cleaner.

LEGO Single Cylinder Oscillating engine - video