Общий каталог Mitsubishi 2020 - 2021 - страница 1724

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Cutting Speed (SFM)Cutting Speed (SFM)Cutting Speed (SFM) TECHNICAL DATA EFFECTS OF CUTTING CONDITIONS FOR TURNING y EFFECTS OF CUTTING CONDITIONS Ideal conditions for cutting are short cutting time, long tool life, and high cutting accuracy. In order to obtain these conditions, selection of efficient cutting conditions and tool, based on work material, hardness, shape and machine capability is necessary. y CUTTING SPEED Cutting speed effects tool life greatly. Increasing cutting speed increases cutting temperature and results in shortening tool life. Cutting speed varies depending on the type and hardness of the work material. Selecting a tool grade suitable for the cutting speed is necessary. 1640 Work Material : AISI 1045 1310 Tool Life Standard : VB = .012 inchUE6105MC6025Depth of Cut : .059 inchFeed : .012 IPRHolder : MCLNR-164C 985 MC6015 Insert : CNMG432Dry Cutting 655 AP25N NX2525 MP3025 NX3035 VP15TF 100 10 20 30 40 50 60 70 80 90 100 Tool Life (min) P Class Grade Tool Life Work Material : AISI 304 Tool Life Standard : .012 inch Depth of Cut : .059 inch MC7015 Feed : .012 IPR Holder : MCLNR-164C Insert : CNMG432MA MC7025 Dry Cutting US735 US7020 MP7035 UTi20T Tool Life (min) M Class Grade Tool Life 1640 Work Material : AISI No.45B Cast Iron 1310 MC5005 Tool Life Standard : .012 inchDepth of Cut : .059 inch 985 MC5015 Feed : .012 IPRHolder : MCLNR-164C UC5115 Insert : CNMG432 UE6110655AP25N UC5105 Dry Cutting 490 NX2525 HTi10 330 UTi20T 260 195 10 20 30 40 60 100 P Tool Life (min) K Class Grade Tool Life aEffects of Cutting Speed 1. Increasing cutting speed by 20% decreases tool life to 1/2. Increasing cutting speed by 50% decreases tool life to 1/5. 2. Cutting at low cutting speed (65―130 SFM) tends to cause chattering. Thus, tool life is shortened. P009