7 Replies Latest reply: Apr 21, 2017 10:11 AM by SteveLucas RSS

    Roughing sequence and plunge feed

    jbijnens-2 Bronze

      Dear all,

       

      When using the roughing sequence to rough a pocket I see there is no option to enter a plunge feed.

      When using an end mill this is essential in order not to damage the flutes.

      I've tried entering a ramp speed and specify explicitly a ramp angle of 90° (which is the default setting).

      This has no effect on the resulting toolpath. The only feed applied is the default cut_feed.

      2017-04-20_11-02-40.png

      The volume rough sequence does have this option but I can't use that sequence for this particular toolpath.

      2017-04-20_11-04-06.png

      Is it possible to specify a plunge feed with the roughing sequence ?

       

         John
         KU Leuven - Technology campus Diepenbeek

        • Re: Roughing sequence and plunge feed
          rmorin Silver

          Hi John,

           

          If you are using the new volume milling sequence you must then specify the entry type defined to ramp as image below. With the old volume milling you just have to specify the ramp angle and speed and Creo understands you want a ramp entry ! By the way I'm still not using the new volume milling sequence as I don't find it very "logical" !

            • Re: Roughing sequence and plunge feed
              jbijnens-2 Bronze

              Merci beaucoup pour votre response.

              I've now found that the new "roughing"-nc sequence, the one that uses a faceted model internally and which is the one I'm referring to, has a slightly different option set (in Creo 4 M010) as can be seen in the following screenshot.

              2017-04-20_15-11-18.png

              Although I have now specified RAMP explicitly and specified a RAMP FEED (see the following picture)

              I still no see a different feed in the cutter location file with respect to the first entry

              2017-04-20_15-24-53.png

               

                 John

                 KU Leuven - Technology campus Diepenbeek - CAD2CAM  

                • Re: Roughing sequence and plunge feed
                  SteveLucas Gold

                  It works on my System with Creo4.0 M10

                  in roughing If I specify a ramp feed different from the cut feed it shows as different. But it is not a straight plunge it is a helical cut into the part.

                  rough_ramp.jpg

                  Here is the code output with the feed at 50 as specified in the ramp_feed  parameter.

                  roughing tool path code.jpg

                  Here is what it looks like again it is not a ramp as you would think. it's an odd helix even though I have it set to ramp.

                  rough_toolpath.jpg

                  roughtoolpath2.png