Andrew Wilding
Aluminum
- Joined
- Jan 3, 2009
- Location
- nottinghamshire, uk
Hello all. I thought this may be of some interest to you. I am a design engineer but in my spare time mess about in my shed making things. I have recently finished reconditioning and converting a little horizontal mill to a cnc vertical.
This is the original mill with the replacement mill in the background that made it a bit redundant.
The small centec mill ways were well worn and the leadscrews had lots of backlash so it was not very useful for accurate work.
The target was to convert this tired mill into a cnc with a part accuracy of +/- 0.001" over a working envelope of about 6"x5"x5". The cost limit for the conversion was £500 ($800) including the original machine, computer, all the materials required for the conversion and electronics for the controller.
This is the finished article after remachining the ways and teflon coating them, scraping the ways to alignment, making the leadscrews and antibacklash nuts adding stepper motors and making a vertical spindle
anti backlash nut
I realise this is a bit HSM for some of you but if there is interest I will go through the reconditioning and conversion process with pictures of alignment measuring set ups which may be helpful to those trying to recondition a small knee mill.
This is the original mill with the replacement mill in the background that made it a bit redundant.
The small centec mill ways were well worn and the leadscrews had lots of backlash so it was not very useful for accurate work.
The target was to convert this tired mill into a cnc with a part accuracy of +/- 0.001" over a working envelope of about 6"x5"x5". The cost limit for the conversion was £500 ($800) including the original machine, computer, all the materials required for the conversion and electronics for the controller.
This is the finished article after remachining the ways and teflon coating them, scraping the ways to alignment, making the leadscrews and antibacklash nuts adding stepper motors and making a vertical spindle
anti backlash nut
I realise this is a bit HSM for some of you but if there is interest I will go through the reconditioning and conversion process with pictures of alignment measuring set ups which may be helpful to those trying to recondition a small knee mill.