KORLOY TECH-NEWS - English TPDB, TPDB-DS, TPDB-H, TPDB-F [ Standard ] [ Medium / large dia.] High-quality and high efficiency top solid indexable Drill Series ҁ ҁ Improved productivity and excellent machining quality through stable machining Versatility in machining various surfaces, structural Steel, and medium / large diameter machining

Highly precise and efficient top solid indexable Drill Series In various industries, there are demands of excellent performance and machining time reduction to improve machining efficiency. Thus, the demand for efficient cutting tools leads to a continuous increase. To respond to these market demands, KORLOY launching the TPDB Plus Drill, a highquality and high-efficiency indexable Drill that enhances machining quality and production efficiency. The TPDB Plus Drill with high helix flutes ensures smooth chip evacuation during machining, greatly enhancing hole surface finish, roundness, and machining...

KORLOY TECH - NEWS Application range TPDC Plus Drill TPDB Plus Drill TPDB Plus Drill KING Drill TPDC Plus Drill Application range Tool TPDB Plus Drill Applicable industries Generation of wind and nuclear power

Indexable Drill selection guide TPDB Plus Drill Surface finish Good surface finish High productivity Aspect ratio TPDC Plus Drill • High precision of hole KING Drill KING Drill Precision of hole TPDC Plus Drill TPDB Plus Drill 4 corners (central and peripheral) Aspect ratio Surface finish TPDB Plus Drill TPDC Plus Drill

KORLOY TECH - NEWS Types of damage to Drill and solutions Scratches on the margin • Lack of coolant lubrication Lack of coolant in deep Drilling due to MQL system Bend of Drill due to improperly placed holder or using a long holder Low rigidity or large concentricity Use more coolant Place workpiece tightly and check the concentricity Check the precision of installment of Drill (below 0.03 mm) Reduce the cutting speed Wear on the margin Due to machining pure metal or heat resisting alloy Less back taper due to using a holder for a long time Unstable machining at the end of hole due to interruption...

Types of damage to workpiece and check points Poor surface finish (rough, scratch, etc.) Factor Low rigidity of machine and improperly clamped workpiece Large concentricity and lack of coolant Clamp the workpiece properly and check the concentricity Increase the amount and pressure of coolant Remained lots of burr at the end of the Drilled hole Factor High feed and excessive honing of the cutting edge Exceeded cutting tool's tool life (too much wear and chipping) Reduce feed (especially at the end of hole) and use a new Drill Increase point angle or reduce honing Flaking the end of the Drilled...

KORLOY TECH - NEWS Special Drill order form ST Hole type Blind hole Shank type Through hole Plain type Coolant type Flat type Internal Special note • Current cutting condition Weldon type Whistle notch type - n (rpm) or vc (m/min) : - vf (mm/min) or fn (mm/rev) : - Depth of cut, ap (mm) : • Standard of measuring tool life : Currently using machine - Machining center : - General lathe : - CNC lathe : TPDB Plus Drill Serie

TPDB Code system Insert Top solid Piercing Drill Insert type Top solid Piercing Drill Insert type Highly precise clamping system - Superior clamping precision with auto-centering system and highly precise grinding clamping parts Screw on clamping system - Easy to replace inserts Sharp cutting edge - Low cutting load and good chip control Holder with excellent durability - Holder with high rigidity and excellent wear resistance due to special surface treatment Holder with excellent chip control - Low cutting resistance and outstanding chip evaluation by applying high helix angle Advanced chip...

KORLOY TECH - NEWS Run-out Workpiece Cutting condition How to clamp an insert Clamping an insert to a holder Changing the used insert to a new one ① Put an insert on the tip seat of the holder. ① Unscrew and separate the used insert from the holder. ② As the [ Pic. 1 ], push the insert to the v-shaped groove of the holder. ② As the [ Pic. 2 ], clean the insert seat. ④ As the [ Pic. 3 ], clamp the insert pushing it with a hand not to separate from the holder. ③ Screw and clamp the insert. Recommended cutting conditions Workpiece ISO Annealed Hardened tool steel Workpiece material Gray cast iron...

Performance evaluation Cutting load Workpiece Cutting condition 10% lower cutting load Competitor Average thrust 5492N Secured stable cutting load with excellent chip evacuation through applying low cutting resistance cutting edge and high helix flutes Surface finish Workpiece Cutting condition 7% better surface finish Spiral mark on the machined hole Good surface finish due to stable chip shape and chip evacuation Chip control Workpiece Cutting condition Regular chip shape and size [ TPDB ] Regular chip shape 10 _ TPDB Plus Drill Series TPDB Average thrust 4998N

KORLOY TECH - NEWS Performance evaluation Machining precision Workpiece Cutting condition Excellent Precision Ø25.010 Ø25.000 Drilling part Beginning Middle [ Drilling part ] Beginning Middle Beginning Middle Beginning Middle High precision cutting due to stable chip evacuation Wear resistance Workpiece Cutting condition Excellent wear resistance Good cutting edge Improved built up edge and chipping resistance lead stable wear on TPDB Plus insert's edge and obtain longer Max. tool life. Cutting condition Built up edge resistance Good cutting edge Sharper cutting edge than competitor's improves...

Applying PVD coating with high hardness and stability in machining at high temperature Stable Drilling due to high cutting edge strength and excellent chipping resistance Optimal grade for Drilling alloy Steel and Cast iron Applying PVD coating with high toughness and excellent lubrication Coating layer highly adhering to substrate Optimal grade for general structural Carbon steel (FE360B, etc.) and machine structural Carbon steel (C45, etc.) machining Applying PVD coating with high surface finish and excellent lubrication Coating layer with excellent hardness at high temperature and oxidation...