Общий каталог Sumitomo 2019 - 2020 - страница 334

Grooving Tools SEC-Grooving Tools GND Type Precautions for SEC-Grooving Tool Holders GND Type ■ Insert Mounting Precautions ① Remove any dust and oil from the insert seat before attaching the insert. ② If there are scratches or burrs on the insert seat, scrape them away. ③ Mount the insert by sliding it parallel to the seat. ④ Clamp the insert with the opposite side (holder side) of the cutting edge secured on the constraining surface. ⑤ Tighten the insert with the recommended tightening torque. If the insert is tightened with excessive torque, it may be damaged, leading to injury. F Mount the insert parallel to the seat Be sure to push the insert to the end Tighten the insert with the recommended tightening torque (See each holder's stock table) Slide the insert parallel with the seat. Constraining surface ■ Precautions when Mounting Holders ① Remove any dust and oil from the toolpost before setting the holder. ② If there are scratches or burrs on the toolpost, scrape them away. ③ Place the holder so that the insert is perpendicular to the workpiece. Failure to do so may bend the machined surface or cause chattering. ④ The overhang of the holder should be as short as possible. ⑤ When grooving or traverse cutting, adjust the centre height of the cutting edge to as close to ±0mm as possible. (Within ±0.1mm is recommended.) Incorrect centre height adjustment may cause chattering. In cut-off applications, adjust the center height of the cutting edge to a value from 0 to +0.2mm. A lower centre height will result in a larger pip at the center. Mount the holder perpendicular to the workpiece. The overhang should be short. Centre height adjustment in cut-off applications Overhang Centre Height 0 to +0.2mm Toolpost Work Material ■ Precautions when Mounting the Oil Supply Nozzle ■ Depth of Cut when Pulling Up with RG/RN Type Chipbreakers ① Set the oil supply nozzle so that coolant can be supplied from the top of the upper clamp unit. Work MatWerioarlk Material Supply coolant to the top of the upper clamp unit E1 E1 Wi(dmth moWf C)i(dmutth moMf C)auxtwimhMeunma(mxPwiDmuhmeleluipnnm)(tgmhPDUuomelfplipCn)tguhtUofpCut CW CW E1 E1 2.0* 2.0* 0.100.10 3.0 3.0 0.150.15 4.0 4.0 0.200.20 5.0 5.0 0.250.25 6.0 6.0 0.300.30 E1 E1 7.0 7.0 0.350.35 8.0 8.0 0.400.40 : CW = 2.0 is RN type chipbreakers only F20