Threading Tools 2018 by Sumitomo

More catalogs by Sumitomo | Threading Tools 2018 | 23 pages | 2018-07-11

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Page 14 of Threading Tools 2018

sumiboron small diameter boring bars sth type ● external grooving ● b sth metricthread whitworth thread external threading 7 external lf hbh hbl ■ holders this figure shows right handed tools dimensions mm cat no sth r/l0810 sth r/l1010 sth r/l1212f sth r/l1212 sth r/l1616h sth r/l1616 sth r/l2020 stock height width length cutting edge height step bottom offset rlhb lf hf hbh hbl ddddddd 8 10 12 12 16 16 20 10 10 12 12 16 16 20 120 120 85 120 100 120 80 8 10 12 12 16 16 20 4 2 qqqqq 15 15 15 15 15 15 15 ddddddd applicable inserts clamp screw wrenches bftx0410ntw th r/l type rt08 bftx0412ntw bftx0410nt lt25nt ■ inserts pdx grooving cut-off w1 pna pna fig3 re pna pdx cat no th r/l6002075a th r/l6002075b th r/l6005125a th r/l6005125b th r/l601015n th r/l550515a th r/l550515b pitch acz150 rldddddddddddddd b radius 50° l coated carbide a flat re pdx fig2 threading re maximum 0.05 fig1 2.5 threading tool f ■ parts h hf max machining level difference 6.5 dimensions mm length height mm threads/inch 0.20 to 0.75 0.20 to 0.75 0.50 to 1.25 0.50 to 1.25 1.00 to 1.50 0.529 to 1.58 0.529 to 1.58 qqqqq 48–16 48–16 l 20 20 20 20 20 20 20 w1 8 8 8 8 8 8 8 nose thread ridge x direction angle radius re q q 0.05 0.05 0.10 0.05 0.05 pdx 0.40 0.40 0.80 0.80 1.25 0.80 0.80 pna 60 60 60 60 60 55 55 this figure shows right handed tools fig cutting edge shape applicable holders 1 2 1 2 3 1 2 a a b b b b b sth type ■ holder and insert combinations right direction cutting edge position guide bush side left hand back turning side guide bush side back turning side sth r right hand th r・・・・B sth l left hand th l・・・・B sth l left hand th l・・・・A guide bush machining conditions holder insert features f76 sth r right hand th r・・・・a in general tooling it is often used where the thread is at the point of the work in this tooling the cutting edge is at the point near the guide bush side and thus you can reduce the undercut width marked with an arrow it is often used where the thread is at the middle or back end of the work in this tooling the cutting edge point is near the back turning side and thus you can reduce the undercut width marked with an arrow the left hand holder the cutting edge position can go further from the guide bush so you can get a sufficient turning distance for the left hand holder a and b type selections are the opposite of the right hand guide bush side is b back turning side is a