Каталог Sumitomo резьбонарезной инструмент - страница 14

SUMIBORON Small Diameter Boring Bars STH Type ● Metricthread External Grooving ● Whitworth thread B STH External 7 External threading LF Max. machining level difference = 6.5 ■ Parts HF H HBH HBL ■ Holders This figure shows right handed tools. Dimensions (mm) Cutting Bottom Stock Height Width Length edge Step Applicable Cat. No. height offset Clamp Screw Wrenches inserts R L H B LF HF HBH HBL STH R/L0810 D D 8 10 120 8 4 15 BFTX0410NTW STH R/L1010 D D 10 10 120 10 2 15 STH R/L1212F D D 12 12 85 12 Q 15 TH R/L RT08 STH R/L1212 D D 12 12 120 12 Q 15 type BFTX0412NTW STH R/L1616H D D 16 16 100 16 Q 15 D D Q F STH R/L1616 STH R/L2020 D D 16 20 16 20 120 80 16 20 Q 15 15 BFTX0410NT LT25NT Threading ■ Inserts tool Fig1 RE 2.5 Maximum PDX PNA 0.05 Grooving Cut-Off (A) Flat (B) Radius Fig2 RE PDX Threading PNA W1 50° L Fig3 RE PNA PDX Dimensions (mm) This figure shows right handed tools. Coated carbide Nose Thread ridge Cutting Pitch Length Height X direction angle Applicable Cat. No. ACZ150 radius Fig edge holders R L mm Threads/inch L W1 RE PDX PNA shape TH R/L6002075A D D 0.20 to 0.75 Q 20 8 Q 0.40 60 1 (A) TH R/L6002075B D D 0.20 to 0.75 Q 20 8 Q 0.40 60 2 (A) TH R/L6005125A D D 0.50 to 1.25 Q 20 8 0.05 0.80 60 1 (B) TH R/L6005125B D D 0.50 to 1.25 Q 20 8 0.05 0.80 60 2 (B) STH type TH R/L601015N D D 1.00 to 1.50 Q 20 8 0.10 1.25 60 3 (B) TH R/L550515A D D 0.529 to 1.58 48–16 20 8 0.05 0.80 55 1 (B) TH R/L550515B D D 0.529 to 1.58 48–16 20 8 0.05 0.80 55 2 (B) ■ Holder and Insert Combinations Direction Right Left hand Cutting edge position Guide bush side Back turning side Guide bush side Back turning side Guide bush Machining conditions Holder STH R (Right hand) STH R (Right hand) STH L (Left hand) STH L (Left hand) Insert TH R・・・・A TH R・・・・Ｂ TH L・・・・Ｂ TH L・・・・Ａ In general tooling, it is often used where It is often used where the thread is at The left hand holder the cutting edge position can go further from the the thread is at the point of the work. In the middle or back end of the work. guide bush, so you can get a sufficient turning distance. this tooling, the cutting edge is at the In this tooling, the cutting edge point is Features point near the guide bush side, and near the back turning side, and thus For the left hand holder, A and B type selections are the opposite of the right hand. thus you can reduce the undercut width you can reduce the undercut width (Guide bush side is B, back turning side is A.) marked with an arrow. marked with an arrow. F76