Announcement

Collapse
No announcement yet.

Digital Readout (DRO) for milling machine

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

  • Digital Readout (DRO) for milling machine

    Putting my ignorance on full display here---I may want to buy DRO's for the X and Y axis of my new milling machine. It has 16" of X axis movement and 8 3/4" of Y axis movement. Pricing seems to be all over the place when I do a web search. Who makes a set of DRO's suitable for a home shop hobby machinist, that are available in Canada, and approximately how much would they cost. I know that in many ways this is like asking "How high is up?", but I don't have any background knowledge on this, and I'm sure many forum members do.---Brian
    Brian Rupnow

  • #2
    For that small of a table I would look into a Igaging set up.
    http://www.ebay.com/itm/Igaging-2-pc...ht_1452wt_1776

    Comment


    • #3
      Just recently (being the last couple weeks) i seen a thread from a member here who just bought glass scales and head for a good price, forget who or the thread (sorry), im sure a search will find there thread.

      Anyway, dont know if they ship north of the border and what shipping would be, but i have two of these units and have no complant. One is on my lathe which has been for 3 years-ish and the other on my IH Mill year +
      http://www.dropros.com/DRO_PROS_Eass...al_Readout.htm

      good luck.

      _

      _
      ~ What was once an Opinion, became a Fact, to be later proven Wrong ~
      http://site.thisisjusthowidoit.com
      https://www.youtube.com/user/thisisjusthowidoit

      Comment


      • #4
        I just put an iGaging dro on my lathe. Busy bee tools has them for a pretty good price. Check out my youtube for a vid of it.
        Steve

        My youtube:
        http://www.youtube.com/MyShopNotes

        Comment


        • #5
          iGaging is garbage, go with a 5 micron glass scale setup and a real DRO head. Perhaps you were reading my threads about fixing my DRO, and installing the Z axis on my mill.
          Sorry for bashing iGaging, but you really should go with glass scales, and they are cheap enough. Each glass scale is around 100$, the DRO head is 160$ from China, and the quality is amazing. I used the Arc function to cut a radius on my engine frames, you can see the results at http://www.ge44.org
          I am still trying to find the link from the seller that I bought the glass scales from, he is based in California

          Update: The seller is http://www.drokits.com
          He also has the reader heads, although I ordered mine from China as he was out of stock. The reader head is amazing quality, the glass scales put out standard quadrature signals.
          Last edited by RB211; 06-11-2015, 11:28 PM. Reason: Added link to seller

          Comment


          • #6
            http://www.tpactools.com/
            Great service, nere Chicago, 5 year common sense warrenty
            Last edited by flylo; 06-11-2015, 11:33 PM.
            "Let me recommend the best medicine in the
            world: a long journey, at a mild season, through a pleasant
            country, in easy stages."
            ~ James Madison

            Comment


            • #7
              Got two from tpactools One on the mill and one on the lathe, going on two years with no problems at all. They do bolt hole circles and a lot more that I have not yet needed to use. The Chinese instruction books are not that great but I have seen much worse. I can figure out what they are saying pretty easily.

              Dwight

              Comment


              • #8
                Top notch especially for the price & service IMHO. He sells on Ebay & always seems to have time to answer any questions.
                "Let me recommend the best medicine in the
                world: a long journey, at a mild season, through a pleasant
                country, in easy stages."
                ~ James Madison

                Comment


                • #9
                  I started with the igaging and thought I was really "uptown" until I saw a real dro setup. Now they are retired and hanging on a nail somewhere in the shop.
                  I bought a 3axis from dropros for the Bridgeport for a reasonable price. Two years later I bought a two axis for the round column.
                  Spend the extra money. Its better than wasting money on substandard stuff then buying the good stuff.
                  Glass scales are fine for a home shop, magnetic scales take the crud and coolant better.

                  Comment


                  • #10
                    Being entirely manual, what effect does wear on lead screws and so forth have on a dro, ie do you need a really tight machine to start, my mill isn't bad but lathe needs tlc, would they be a waste on an old machine or can you compensate?, I understand the dro shows the actual position of the table, but in the z axis, you can raise or lower the table, and the quill can go up and down, does this require to encoders
                    To give an actual position?
                    Mark

                    Comment


                    • #11
                      The screw wear has zero impact on DRO performance. Gibb wear that allows "rotation" can be a problem, but if your machine is that bad, you need to fix that first.

                      As for Z axis, yes... you have to work off of one end or the other alone (knee or quill), or otherwise do the math in your head. There ARE some dro's that can handle the combined movement, but I'm pretty sure they are cost prohibitive.

                      From the last thread, I learned of "thedrostore.com". I ordered a 2axis setup from them and it shipped out of singapore and was at my door in less than a week. So far, very happy with the performance.

                      Comment


                      • #12
                        Originally posted by Royldean View Post
                        As for Z axis, yes... you have to work off of one end or the other alone (knee or quill), or otherwise do the math in your head. There ARE some dro's that can handle the combined movement, but I'm pretty sure they are cost prohibitive.
                        Allendale do a summing unit for knee and quill (when in stock) .. $110 ish. Not sure if that prohibitive or not.

                        http://www.machine-dro.co.uk/m-dro-l...interface.html

                        Rob

                        Comment


                        • #13
                          I will make it quick and simple. DRO pros do not keep parts on hand after about 5 years. Even though the parts are still made in China, because they are still producing the same model, DRO Pro’s will not order a circuit board for you. (Easson 10) They steer you towards a new model.

                          The China factory admit they still make it, they will not sell you a circuit board, but refer you back to DRO Pro’s, who still will not order it for you.

                          Comment


                          • #14
                            I have used Bridgeports in a professional environment for around 40 years. All the shops I ever worked in only had X and Y readouts. For the Z we used the dial on the knee crank. It has no backlash because of gravity so the dial is pretty accurate. It also has a lot less wear than the X and Y as it gets moved a lot less. On the CNCs with a Bridgeport head I still don't feel the need for a DRO scale on the quill.

                            Comment


                            • #15
                              Little Machine Shop sells the Shooting Star DRO that is made and sold in Canada. I really like mine.
                              _____________________________________________

                              I would rather have tools that I never use, than not have a tool I need.

                              Comment

                              Working...
                              X