Общий каталог Yamawa 2021 - страница 387

Forming Taps Intro SURZ MP Multi Purpose Series SP Thread Forming Taps for Stainless Steel, Coated FEATURES Multi purpose forming taps for blind and through hole 2P application. SL HSS-P COATING THCHT Special form on thread root to control the minor diameter of internal threads. Special lobe shape to reduce tapping torque. Recommended Tapping Speeds Depending On Materials PO ISO Vc (m/min) ISO Vc (m/min) P1 15÷30 H M1 10÷25 H P2 15÷30 H M2 10÷25 H P3 15÷25 H ST P4 15÷25 H P7 10÷25 H H 1st choice I suitable ROLL JIS-SURZ JIS Product Features - Adopting the special form on thread root, SURZ controls the minor diameter geometry of internal threads. CARBIDE - Special lobe shape reduces the tapping torque. - High efficiency can be obtained in thread forming of stainless steel parts. - The minor diameter geometry of internal threads can be adjusted modifying the bored hole size. LONG Process Data M2×0.4 AISI 304 - 1.4301 Recommended bored hole diameter before tapping Work-material M2x0.4 6H internal thread minor diameter HAND Tapping length 5.2mm (Blind hole) and tolerance Unit : mm TAPS Tapping speed 5m/min Max. 1.679 Recommended Size Class bored hole size Bored hole ø1.85 - ø1.82 Min. 1.567 M1X0.25 G4 0.90 Machine Machining center (BT15) Tolerance 0.112 EG (STI) M1.2X0.25 G4 1.10 Feed Rigid M1.4X0.3 G4 1.28 Tapping direction Vertical M1.6X0.2 G3 1.52 Lubricant Water soluble oil (×20) SPECIAL M1.6X0.35 G4 1.46 THREADS, Bored hole size φ1.82 φ1.81 M1.7X0.35 G4 1.56 GAUGES M2X0.4 G4 1.82 Cross section M2.3X0.4 G4 2.12 picture of internal THREAD threads M2.5X0.45 G4 2.30 MILLS M2.6X0.45 G5 2.40 M3X0.5 G5 2.77 Seam shape Small seams No seam No.2-56UNC G4 1.98 Minor diameter φ1.59 φ1.58 DIES No.4-40UNC G5 2.55 Bored hole size φ1.84 φ1.83 No.6-32UNC G5 3.14 Based on our tapping test experiences the CENTER Cross section recommended bored hole diameters shown in DRILLS picture of internal above table have been calculated aiming at 90% threads thread engagement and tr ying to avoid tap breakage. Recommended bore hole diameter may change Technical Seam shape Regular seams Small seams because material deformation can slightly change info Minor diameter φ1.62 φ1.60 depending on material, hardness, dimension of workpiece and tapping condition. 388