SGS-Tools - Каталог для Европейских стран - 2014 EN

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                                                                                          Application Tips

Tool              • Whenever possible, select an end mill with the largest diameter, shortest flute length,
                    and shortest overall length for the best rigidity
Tool Holders
Workpiece         • Long flute tools are not intended for pocketing, slotting, or heavy profiling – limit Rw to .02D
Machine           • High Performance tools minimise cycle time and extend tool life
Coolant           • Holders with adequate gripping pressure and TIR are required
                  • Stub holders or zero length collet style holders are recommended for heavy stock removal
Methods           • When using solid holders, hand ground screw flats are not recommended
                  • Secure clamping of the workpiece will reduce chatter and deflection
                  • Spindle must be in optimum condition for precise TIR and maximum tool life
                  • Sufficient horsepower is required to perform at recommended speeds and feeds
                  • Reduce rates for low power machines to prevent workpiece and / or tool damage
                  • Avoid re-milling chips through use of air blast or liquid coolant as necessary
                  • Maintain clean coolant with appropriate concentration
                  • General recommendations:

                     – Water Soluble Oil or Air Blast: Tool Steels, Mold & Die Steels, Carbon or Alloy Steels
                     – Water Soluble Oil: Stainless Steels, Titanium, High Temperature Alloys, Non-Ferrous Alloys
                  • Climb milling is generally preferred
                  • Attention to programming details, tool holders, TIR, balance, fixturing, etc. improve cutting tool performance and
                    extend tool life

END MILLING GUIDELINE

D1 = cutting diameter L2 = flute length

Speeds and Feeds for Cut Types are based on Radial Width ( ae ) and Axial Depth ( ap )

Reductions to Speeds and Feeds may be necessary when:  • ae and ap exceed recommendations
                                                       • Using long flute or extended reach tools
                                                       • Using long tool holders
                                                       • Machining materials harder than listed

ENTRY METHODS

Pre-Drilled Hole                         Helical       Ramp                                          Plunge

Pre-drilling is the preferred            Alternative methods are helical and ramping.     Plunge only in non-ferrous
entry method for most                    Use slotting speeds and 25% to 50% slotting      and short-chipping materials
applications.                            feeds. Engage at about 5° for General Purpose    using slotting speeds and
                                         tools and 5° to 10° for High Performance tools.  25% slotting feeds.

                                                                                          END MILLS                                     87

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