Jeremy, Jon; Good answers.
Jon - yes, it's a horizontal mill, but I have the geared head with quill, and have only used the horizontal arm once, so apologies for forgetting that it's a horizontal mill originally. Jeremy - I had not thought of putting a stepper on the quill feed - interesting idea for sure. The idea was indeed to use the bevel gearing and feed screw for raising/lowering the whole knee, table included, and locking the spindle. I think some testing is required for the knee - see if it slides smoothly, as per Jon's remarks. Most of the time the Knee is just locked in place, so I don't expect any wear there. I know Andy did a Horizontal - I'll have to find his pictures somewhere, and see what he did. Thank you for the feedback - I appreciate the experience that you guys have shown. John. On Wed, Feb 19, 2014 at 12:00 AM, Jon Elson <[email protected]> wrote: > On 02/18/2014 07:59 PM, John Alexander Stewart wrote: > > Hi all; may be off topic, but am wondering about converting my Centec 2B > > mill to CNC. X,Y axes are relatively easy; Z is difficult. > > > > Is there any real need to convert the Z axis, assuming that the weight of > > the table will keep the backlash to a minimum, or am I way off base here? > > > Is this a horizontal mill? That's what I get with a search. > The left-right table is still the X axis, but the Z is the > toward/ > away from the operator, as it is parallel to the spindle. > The knee crank is the Y axis. This is necessary to make the > axes follow the right hand rule. On some old machines, the > rocking of the knee can cause it to bind and not always > drop when the crank is lowered. If that doesn't happen, then > the only thing you need to worry about is backlash on > the bevel gears of the elevating crank. > > Jon > > > ------------------------------------------------------------------------------ > 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 > ------------------------------------------------------------------------------ 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
