Announcement

Collapse
No announcement yet.

Cheap and dirty lathe conversion.. (Old Nebel lathe)

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • #16
    I have a brand new one... in a box somewhere.
    *** I always wanted a welding stinger that looked like the north end of a south bound chicken. Often my welds look like somebody pointed the wrong end of a chicken at the joint and squeezed until something came out. Might as well look the part.

    Comment


    • #17
      Putting the ball screw in the cross slide (x axis) we are mounting the stepper on the back side of the lathe. So - we needed to put a hole in the back side of the saddle for the ball screw to pass though. Found an old shaft (threaded on one end - no clue what it was from)

      turned down the end so it would pass through the existing brass nut and used it to drill and bore the back side of the saddle...

      Click image for larger version

Name:	PXL_20220313_152059304.jpg
Views:	212
Size:	1.15 MB
ID:	1991508

      Click image for larger version

Name:	PXL_20220313_152111095.jpg
Views:	218
Size:	1.62 MB
ID:	1991509

      Click image for larger version

Name:	PXL_20220313_160719278.MP.jpg
Views:	211
Size:	2.26 MB
ID:	1991510

      Comment


      • #18
        used the same shaft and made a boring bar. This should allow us to center the ball screw, bearings and motor mount is perfectly allinged..

        Click image for larger version

Name:	PXL_20220314_220903791.MP.jpg
Views:	199
Size:	2.37 MB
ID:	1991749

        Click image for larger version

Name:	PXL_20220315_003921303.MP.jpg
Views:	193
Size:	3.32 MB
ID:	1991750

        Comment


        • #19
          Dad shaped the ball nut housing to fit into the slot. I bored and drilled/tapped the holes to mount the nut and the bolt to mount the housing. The ball nut needs a bit of flange removal - you can see it overhanging the nut housing.

          Click image for larger version

Name:	PXL_20220318_000051202.MP.jpg
Views:	182
Size:	474.0 KB
ID:	1992144

          Click image for larger version

Name:	PXL_20220317_230928565.jpg
Views:	186
Size:	468.9 KB
ID:	1992145

          Click image for larger version

Name:	PXL_20220317_230900253.MP.jpg
Views:	177
Size:	634.3 KB
ID:	1992146

          Click image for larger version

Name:	PXL_20220317_230806853.MP.jpg
Views:	177
Size:	1.98 MB
ID:	1992147

          Comment


          • #20
            getting closer... Dad ground the ball screw nut to size. The nut and housing seem to work great under the cross slide...

            Click image for larger version

Name:	PXL_20220320_191238845.MP.jpg
Views:	175
Size:	603.2 KB
ID:	1992616

            Click image for larger version

Name:	PXL_20220320_190900170.jpg
Views:	169
Size:	769.9 KB
ID:	1992617

            Click image for larger version

Name:	PXL_20220320_191008111.MP.jpg
Views:	170
Size:	545.2 KB
ID:	1992618

            Comment


            • #21
              I have a Drewtronics touch probe on my Taig, love it.

              Comment


              • #22
                Just have to make the motor mount... The cross slide has about 17 inches of travel...

                Click image for larger version

Name:	PXL_20220405_233252293.jpg
Views:	140
Size:	1.21 MB
ID:	1995689

                Click image for larger version

Name:	PXL_20220405_233627304.jpg
Views:	126
Size:	1.03 MB
ID:	1995690

                Comment


                • #23
                  When mounting the ballscrew, at least the ones I have, the threaded section of course takes a nut, but there is no register against the ball threads. So what is the proper method to remove lash? Angular contact bearings preloaded with a nut on the threaded side, what about the other side?

                  Comment


                  • #24
                    RB - do you have a picture? I am not understanding what you mean. Mine had a machine section between the ball screw and the threaded section. I made a bearing block that has a section that keeps angular contact bearings apart. The nut pre-loads the bearings. (going to use jam nuts.) the opposite end - we just have a bearing to keep it from flopping around..

                    Comment


                    • #25
                      Sorry - forgot to quote you ^

                      Originally posted by skunkworks View Post
                      RB - do you have a picture? I am not understanding what you mean. Mine had a machine section between the ball screw and the threaded section. I made a bearing block that has a section that keeps angular contact bearings apart. The nut pre-loads the bearings. (going to use jam nuts.) the opposite end - we just have a bearing to keep it from flopping around..

                      Comment


                      • #26
                        Originally posted by skunkworks View Post
                        Sorry - forgot to quote you ^


                        That makes perfect sense, except there is no hard shoulder opposite the threads to preload the bearings unless one bearing is up against the ball threads.

                        Comment


                        • #27
                          if it is a different diameter? isn't it a hard stop?

                          Comment


                          • #28
                            Originally posted by skunkworks View Post
                            if it is a different diameter? isn't it a hard stop?
                            I suppose it's good enough, I just don't like it!
                            Click image for larger version

Name:	PXL_20220406_223613378.MP.jpg
Views:	107
Size:	617.2 KB
ID:	1995850

                            Comment


                            • #29
                              Lol.. it will probably work just fine..

                              Comment


                              • #30
                                almost ready to test the X axis...

                                Click image for larger version

Name:	PXL_20220409_215707315.jpg
Views:	98
Size:	767.2 KB
ID:	1996223

                                Comment

                                Working...
                                X