* ^m Cutting conditions revised Drills for High-hardness Steels^ Enables drilling of hardened steel. Enables high-accuracy drilling of deep holes. Hitachi Tool Engineering, Ltd.

Let s take care of drilling in hardened steel. Let us take care of drilling in hardened steel. e ake ak care drilling hardened teel ng dened tee n d Merits of drilling (direct drilling) of heat-treated materials Shorter delivery by stocking hardened blanks. Reduces setups to electrodischarge machining equipment or special machinery. Longer unmanned operation by reducing labor involved replacement of electrodes and tools. Epoch Micro Step Borer H Carbide Oil Hole Non Step Borer H Line up e 60

Achieves high-performance drilling of high-hardness steels. Features of Carbide Oil Hole Non Step Borer H “NSBH-ATH” Superior rigidity and cutting edge strength tuned for high-hardness steels. . Smooth removal of cutting chips by special flute shape. Further evolved heat-resistant ATH Coating Center thickness Helix angle Ce Cent r hi kness: La g Center thickness: Large Center thickness: Large Increased tool rigidity and cutting flute strength Deformation simulation using quasi model Torsional displacement for simulation using the thrust and torque values generated when boring steel material with...

Work material Carbide Oil Hole Non Step Borer H Cutting Force Item code & size cv Internal water base coolant Cutting force value Cutting force value Start drilling Start dr ng Start drilling Start drilling rilling ng Cutting force value Conventional B 3600 2400 1200 0 St r drilling Start dr lling Start d il ng ng Compared to conventional tools, cutting force variation during drilling is less and smooth drilling is achieved. Improved heat-resistant coating Features The heat-resistant TH coating used previously has further evolved. A laminated structure is used to achieve both heat resistance...

Carbide Oil Hole Non Step Borer H The tool with the shortest flute length for each diameter has a tip angle of 140°. For other tools, the tip angle is 135°. Cutting depth should be set to (Flute length - 2*Dc) as a general rule.

cutting conditions Carbide Oil Hole Non Step Borer H [^]W\^it^(OM^.{<~'Dl^T] Setting of Cutting Conditions restore, WD^-©^!*©^^ Be sure to refer to the boring procedure (under) when selecting a tool. ■ These standard cutting conditions are intended as approximate values for cutting conditions. For actual drilling, cutting conditions should be adjusted according to the drilling shape, purpose, machine used, etc. ■ If cutting chips are not smoothly ejected, perform step drilling at lengths around the tool diameter. ■ The above cutting conditions are based on the use of a water base coolant diluted...

Field Data Achieves long tool life with high-performance drilling of high-hardness steels. WWti Work material : DAC(50HRC) W&t. \T)£ Item code & size : NSBH0600- 1 50-ATH ( 0 6.0 X 1 50X205) JPISS Cutting depth = 1 20mm W-"f R/X Pilot hole 1 2mm) C—5 y h Coolant : 7jO"§1'4tO'^IJ;^ f*gg|5$p}J Internal water base coolant N=l IS57\!@"Ci5j}l N=1: Chipping at 5th drilled hole 1 T^ST^ifj^M Broken at 1st drilled hole Wffltt Work material \ SUS420J2ffl^ Equivalent to SUS420J2 (52HRC) IMMMt^tfe Item oode & size \ NSBH0600- 1 50-ATH (06.OX 1 50X205) JPISS Cutting depth = 1 20mm W-"f R/X Pilot hole 1 8mm...

Achieves high-grade holes and good cutting chip removal. Wall surface condition (06 x 125mm) ^Roughness measured at 6 locations per hole. JPISS Cutting depth = 1 25mm C — V Coolant : 7X/"§t4tO'^IJ;^ f*9p|5lp)S Internal water base coolant f=0.06mm/reV Enables long tool life drilling with good dimensional accuracy Inside diameter dimensions (06 x 25mm) JimmSt^ii item codes size : NSBH0600-60-ATH JPI^cS Cutting depth =25mm h coolant: Tkfgvtwfflm Pi&ffiffi Internal water base coolant Measurement at around 3mm from hole top Measurement at around 3mm from hole top Measurement at around 15mm from hole...

Features of Epoch Micro Step Borer H "EMSBH-ATH" Achieves small-diameter deep drilling of high-hardness steels by using special substrate, shape, and coating. Special flute design for high-hardness steels enables smooth drilling Flow of cutting chips is also smooth. Special flute shape for high-hardness steels Chip-removal stopper Chips are reliably removed, improving guide characteristics during drilling. Chip-removal stopper technology + high-rigidity neck shape enables high-accuracy drilling of minute holes. Chip removal flow dir Chip removal flute High-rigidity neck shape Chip stopper Improved...

Epoch Micro Step Borer H (Note) For products with tool dimensions other than those listed above, separate consultation is needed. Please contact our sales office.

cutting conditions Epoch Micro Step Borer H [^iJ^fr^jS/EluOUr] Setting of Cutting Conditions V-fffiM ■ T=5mm II :00.5x5mm jnigKr : 5.14mm (xmftmM) • This standard cutting condition table is intended as reference cutting conditions. The conditions should be adjusted as necessary according to the actual conditions of machined shape, purpose, machine used, etc. ■ In general, water-soluble or oil-based coolant should be used to ensure chip ■ Under-neck length (£2) conforms to through-hole drilling depth. ■ When drilling through holes, drill the through hole to a depth of between 20% and 30% of the...

Special Starter (EPDBEH-ATH) fcCffifflOgSW Use of our Epoch Deep Ball Evolution Hard (EPDBEH-ATH) is recommended for starter. Tolerance on R : Right table Helix angle Back taper on peripheral ■ These Recommended Cutting Conditions indicate only the rule of a thumb for the cutting conditions. In actual machining, the condition should be adjusted according to the machining shape, purpose and the machine type. ■ In general, water-soluble or oil-based coolant should be used to ensure chip removal. ■ Always use with a G83 program (Peck drilling cycle). ■ Hole depth: Be sure to drill to a depth of...