If the knee is motorized and has position feedback you could adjust the knee position according to the tool length offset. The slow motion of the knee would not affect the cutting as it would happen only once per tool change. It would be an intuitive action also as the tool gets longer the table gets lower.
On Thu, Feb 20, 2014 at 3:07 AM, Schooner <[email protected]> wrote: > IMHO if you motorise the knee instead of the quill, you lose all the > benefits of the knee elevation for adjusting to workpieces and manually > touching off the Z tool, in favour of a very slow and potentially > troublesome Z axis which requires all movements to be inverted in a > somewhat counter-intuitive way. > > I agree that whilst possible, motorising the rack and pinion would > result in so much slop that it would be next to unusable > > What is commonly done with manual mill conversions of the turret knee > mills is to motorise the quill and leave the knee as manual. > The quill is disconnected from the rack and pinion arrangement and large > plate clamp is attached to the bottom of the quill > > This is driven up and down through a ballscrew from a box mounted on the > side of the head. > The travel is typically quite short (70 - 150 mm), because all major > adjustments are done on the knee and quill travel is just used to cut to > depth with the standoff between cuts that is required. > (same as it was when a manual mill) > > I have such a mill and it works very well. > > regards > > > ------------------------------------------------------------------------------ > Managing the Performance of Cloud-Based Applications > Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. > Read the Whitepaper. > > http://pubads.g.doubleclick.net/gampad/clk?id=121054471&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Addressee is the intended audience. If you are not the addressee then my consent is not given for you to read this email furthermore it is my wish you would close this without saving or reading, and cease and desist from saving or opening my private correspondence. Thank you for honoring my wish. ------------------------------------------------------------------------------ Managing the Performance of Cloud-Based Applications Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. Read the Whitepaper. http://pubads.g.doubleclick.net/gampad/clk?id=121054471&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
