Application range Copper Mold making Carbon steel Alloy steel Stainless steel Tool steel Pre-hardened steel Hardened steel Hardened steel 45～55HRC 55～72HRC Parts processing Applications Planing Rest material Miniature machining CBN High Precision Ball End Mill Achieves high-accuracy machining of hardened steels !!

Features of Epoch CBN High ® ① Dedication to high accuracy and high quality ・The low cutting force high-strength flute shape ・R tolerance : ±0.003mm (R0.3 or less)　 ・High-accuracy h4 shank specification　 ・All tools include actual measured values for outer diameter suppresses damage and enables to handle applications from roughing to finishing. ・High-rigidity design improves machining accuracy. ・High-quality flute edge improves surface roughness. Newly designed low cutting force high-strength flute shape Helix flute design for excellent cutting performance Reduces cutting force Higher-strength...

Precision Ball End Mill ② Expanded lineup ・High-demand items such as short under-neck length types or small-diameter types have been greatly expanded! ③ Regrindable flute shape ( R 0.3 or more) Original shape provides core diameter and wall thickness to increase rigidity. CBN-EHB Bigger core diameter Tool：CBN-EHB2010-2.5 (R 0.5 ×Under neck length 2.5mm) Machine：Vertical M/C （HSK-E32） 　 Work material：SLD （60HRC） Coolant：Mist-blow （v n =40,000min-1 c=125m/min） v f =1,600mm/min z =0.02mm/t） （f Cutting pitch：0.02mm　 Stock material：0.02mm Cross section Groove width Stock material Measurement of difference...

Epoch® CBN High Precision Ball End Mill CBN-EHB2 Actual measured mill diameter value is Regrinding of tools with R0.3 or larger is possible. (Necessary total shown on case. length is at least 40mm.) Please contact us for details. : Stocked Items.

Cutting Conditions<High efficiency condition > Work material [Note] 1) Use the appropriate coolant for the work material and machining shape. 2) 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. 3) If the machine rotation speed is insufficient, reduce the rotation speed and feed rate by the same ratio.

Cutting Conditions<Finishing condition> Work material [Note] 1) Use the appropriate coolant for the work material and machining shape. 2) 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. 3) If the machine rotation speed is insufficient, reduce the rotation speed and feed rate by the same ratio.

For stable machining, perform semi finishing to remove remaining stock in the corners. (This will make the machining amount for finishing uniform.) At this time, it is recommended that the program should be set so that the cusp height will be a constant amount. In addition, it is recommended that semi finishing should be performed with CBN end mill. < Input of diameter correction value > Make effective use of the measured outside diameter value stated on the case. For Epoch CBN High Precision Ball End Mill, the measured outside diameter value is stated on the case. Inputting the actual measured...

Field Data ● R shape machining example by Z constant machining【After cutting 1,500m】 Tool：CBN-EHB2010-2.5(R0.5 ×Under neck length 2.5mm)　Machine：Vertical M/C (HSK-E25)　 Work material：YXR3 （58HRC)　Coolant：Mist-blow　n =40,000min-1(v c=125m/min) v f =1,760mm/min(fz =0.022mm/t)　Cutting pitch：0.02mm　Stock material：0.02mm Flute edge section Peripheral flute edge Normal wear Continued machining possible. Low cutting force high-strength flute shape suppresses damage and provides longer tool life than conventional product! ● Example of pocket-shaped finishing Tool：CBN-EHB2010-2.5(R0.5 ×Under neck length...

● Example of inclined surface finishing by scan machining①【After machining 25m】 Tool：CBN-EHB2002-0.5(R0.1×Under neck length 0.5mm) Machine：Vertical M/C(HSK-E25)　Work material：DC53(62HRC)　Coolant：Mist Blow　 n =40,000min-1(v c=25m/min) v f =350mm/min(fz =0.0044mm/t)　 Cutting pitch：0.01mm　Stock material：0.006mm　 Normal wear Continued machining possible. ● Example of inclined surface finishing by scan machining②【After machining 60m】 Tool：CBN-EHB2003-0.5(R0.15×Under neck length 0.5mm)　 Machine：Vertical M/C (HSK-E25)　Work Material：PD613(61HRC)　Coolant：Mist-blow n =40,000min-1(v c=38m/min) v f =500mm/min(fz...

Epoch® CBN High Precision Ball End Mill × The high-strength flute shape of the Epoch CBN high-precision ball end mill shows excellent performance even in roughing. By using this product, not only for finishing but also for roughing, machining with higher accuracy than conventional carbide tools can be achieved. Precision Pre-finishing” For making high precision dies&molds, the accuracy of roughing and semi-finishing processes are very important as well as finishing. High precision from roughing enables the optimization of the total production process including polishing or adjustment! This is...

Comparison of changes in remaining stock for each machining pattern from © to © Tool : [cBN] CBN-EHB2004-0.75 [Carbide] EPDBEH2004-0.75-ATH (R0.2*Under neck length 0.75mm) Machine : Vertical M/C (HSK-E25) Work material : ASP23 (64HRC) Coolat : Mist-blow ap*ae=0.01mmx0.03mm Cutting pitch 0.01mm Stock material 0.01mm Machining time for 1 mold is approx. 30 min. Machining time for 1 mold is approx. 10 min. © Roughing : Carbide tool Finishing : Carbide tool © Roughing : Carbide tool Finishing : cBN tool © Roughing : cBN tool Finishing : cBN tool By using CBN-EHB for roughing as well,...

For regrinding of this tool, please contact the person incharge. We will reproduce the special tip shape. The diagrams and table data are examples of test results, and are not guaranteed values. "Epoch" and “ ” are a registered trademark of Mitsubishi Hitachi Tool. 1. Cautions regarding handling (1) When removing the tool from its case (packaging), be careful that the tool does not pop out or is dropped. Be particularly careful regarding contact with the tool flutes. (2) When handling tools with sharp cutting flutes, be careful not to touch the cutting flutes directly with your bare hands....