GUHRING - Концевые фрезы - 2013 EN

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Guhring RF 50 variable flute end mills
for materials < 54 HRC

                            a         We have developed the RF 50 end mill with variable flute
                           b          spacing primarily to prevent chatter and the so-called
                                       corkscrew effect (as found when withdrawing tools having
                              a  b  a large spiral angle)

Micro-corner protection and            However, the variable flute spacing does not only combat
corrected reinforced cutting edge      these two unwanted effects but offers the following
= optimal stability                    additional advantages:

                                       s(IGHERFEEDRATES
                                       sLONGERTOOLLIFE
                                       sINCREASEDMILLINGDEPTHS
                                       sVIBRATION
FREEMACHINING
                                       sSUITABLEFORROUGHINGANDFINISHING
                                       sINCREASEDSURFACEFINISHQUALITY
                                       sSTRAIGHTERCUTTING

                                       Ff in [N]  35°400 standard 4-ute

                                                  300
                                                  200

                                                  38°100
                                                     0

                                       Ff in [N]  400 RF 50
                                                  300
                                                  200                                                                                   1,0 1,5 2,0
                                                  100                                                                             Linear milling section [mm]

                                                     0
                                                        0 0,5

                                       A cutting force comparison between a conventional type N and a RF 50
                                       variable helix end mill clearly shows the RF 50 end mill’s quieter and more
                                       stable machining characteristics.

                                       Material                                                              Alloyed              up to 180 HB 30          Stainless                           H
                                                                                                                Steel                Cast iron                steel
                                                                                                                      Tool Steel                                        Aluminium
                                                                                                                                        over 180 HB 30                             Ti-special
                                                                                                                                                                                      alloys

                                       Hardness                                                              up to 28HRc                                   up to 28 HRc                                      up to 52 HRC
                                         tensile                                                                    over 28 HRc                                 over 28 HRc
                                        strength                                                                                                                      up to 3% Si
                                                                                                                                                                            over 3% Si
                                                                                                                                                                                  Ti-based
                                                                                                                                                                                        Ni-based
                                                                                                                                                                                               up to 52 HRC

                                       RF 100 U                                                              s sss                                                ss

                                       s = optimal suitability                                                                                          s  = limited suitability

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