Page 263 - Demo

261DEEP HOLE DRILLINGTOGTThe TOGT inserts features chip splitting cutting edges, a positive rake chip breaker, and a wiper for high hole surface quality.WiperChip SplittingThe TOGT inserts are available with 2 types of chipformers: TOGT%u2026DT and TOGT%u2026GF.GF DT1 a%u02daRake anglea%u00b0=25%u00b0 a%u00b0=20%u00b02ID markF TThe selection of the GF or DT chipformer depending on the feed rates (mm/rev) according to the recommendations beloRecommended Feed Rate of EachChipbreaker for Various MaterialsMaterialFeed rate(mm/rev)PMKNSHGF DTGFGFDTDTDTDTGFGFGFDT0.03 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.2 0.3LOGTThe LOGT inserts feature 2 chip splitting cutting edges, a positive rake chip breaker, and a wiper for high hole surface quality.Basic Dimensions of TOGT and LOGT InsertsTOGT TOGT LOGTS SSIC %u2013 inscribe circle diameterRE %u2013 corner radiusPL %u2013 point lengthS %u2013 insert thicknessTOGT and LOGT Advantages%u2022 Highly accurate peripherally ground insert, providing high hole diameter accuracy of IT10%u2022 Produces narrow chips for effective chip evacuation, enabling higher feed rates compared to other Gundrills available in the market%u2022 A wiper on the insert provides extra fine surface finish%u2022 Direct insert mounting %u2013 no adjustment needed for accurate hole diameterTRI-DEEP GF Chipformer Advantages%u2022 Chipformer with positive rake results in an easy cut%u2022 Advantageous for Gundrill machines with low motor torque that can run only with low feed rates%u2022 Avoids long and curly chips that may jam in the drill gullets and damage the tool%u2022 Helps improve surface quality due to small chips that are easily evacuated%u2022 Effective chip control even at low feeds