Общий каталог Sumitomo 2019 - 2020 - страница 403

Tools Threading SEC-Threading Tools SSTE Type / SSTI Type ■ Shim Replacement 1 2 3 4 Shim Shim Set Screw Recommended Tightening Torque 1.0 to 1.5N·m Remove the insert to Loosen the shim set screw Remove the shim and mount Tighten the shim set screw. F expose the shim. by one to two turns. a different shim that matches (Recommended Tightening the lead edge angle. Torque 1.0 to 1.5N·m) ■ Wiper Edge Without Wiper Edge With Wiper Edge Work Material Work Material Finishing allowance Wiper Edge Insert (Without Wiper Edge) Insert (With Wiper Edge) · Performs threading without machining thread ridges (the · Enables machining of workpieces into shapes compliant machined surface from the previous process is left unworked.) with thread standards · Enables machining of threads with different pitch widths with the same insert · Only speci c thread speci cations and pitch can be machined · Finishing of the internal (or external) diameter is required · In order to nish a thread with the wiper edge, a nishing before the threading process. allowance of 0.1mm on each side is required · Fine burrs are easily formed on edges of ridges · Edges of ridges can be rounded off. ■ Infeed Method The modified flank infeed is recommended for the SSTE Type/SSTI Type. This infeed method, which features reduced chip curl diameters and stable chip control, can also decrease chipping on trailing edges that often occurs in radial infeed machining. (1° is recommended for the modification angle.) ● Impact of Infeed Method on Chip Shapes Work Material: SUS316, M30 x 1.5 Cutting Conditions: vc=60mm/min Wet, 8 Passes Modi ed Flank Infeed Radial Infeed Machining Leading Trailing Edge Edge Feed Direction 50mm Feed Direction 50mm Reduced curl diameters ensure smooth, stable chip control (performance) Large curl diameters cause unstable chip control F89