Carbide Drill for Hardened Steel Epoch TH Hard Drill

TH coating and 4 guides with double margins make it last even longer. EDM, which is generally used for drilling hardend steel, has been the biggest impediment to reduction of maching cost. The Epoch TH Hard Drill for hardend steel was developed to solve this problem. TH Coating Carbon steel Tool steel Alloy steel Pre-hardened steel Hardened steel Hardened steel Hardened steel 45~55HRC 55~65HRC 65~72HRC Mold making EHSE-TH Parts processing Features for Epoch TH Hard Drill TH coating has greatly improved surface hardness and heat resistance, resulting in machining efficiency and a longer life for...

Condition of cutting edge in cutting Two guides with single margine Deformed circle Drill center is unstable Four guides with double margins Center of drill is stable Good roundness Single Margine Double Margine High cutting resistance causes cutting edge deflection, resulting in deformed holes, cutting edge wear or chipping of the edge. Four guides with double margins decrease cutting resistance and prevent cutting edge deflection and chipping of the edge. Effect of Chamfered cutting edge EHSE-TH Confered cutting edge at corner moderates concentration of stress. Chamfered cutting edge General...

EHSE Item Code : Stocked Items. No mark : Manufactured upon request only

[Note] 1. The above conditions apply to a hole-depth of 3 times the diameter or less. 2. Mount the drill on a collet without any flaws. Adjust the drill run out to 0.02mm or less. 3. Use a machine with high rigidity. 4. Supply a sufficient amount of cutting fluid (Water-soluble, dilution of 20 times or less) to machining points. © The above conditions apply to a hole-depth of 3 times the diameter or less. © Cutting performance may vary according to the material being cut and its hardness. © Mount the drill on a collet without any flaws. Adjust the drill run out to 0.02mm or less. @ Supply a sufficient...

O Drilling for Machine parts Work material Machine parts SKD61 (52HRC) 06 Cutting Conditions Item Code : EHSE6.0-TH vc=30m/min n = 1,592min-1 f=0.12mm/rev v f=191mm/min Cutting fluid: Water-soluble coolant Machine : M/C EHSE -TH Conventional ■ Cutting edge condition after drilling 150 holes Drilling for Cold work die steel Work material Cold Work Die Steel SKD11 (60HRC) Cutting Conditions EHSE -TH Conventional Tool life 4.8 times longer ■ Cutting edge condition after drilling 100 holes Coarse chips

Work material Cutting Conditions Machine parts /Inducted work material surface hardness Item Code : EHSE6.0-TH vc=60m/min n = 3,180mim1 f=0.12mm/rev v f=382mm/min Cutting fluid: Water-soluble coolant Machine : M/C [Double margine effect] Even interrupt drilling more than double tool life EHSE -TH Conventional O Drilling for SKH (65HRC) Work material Cutting Conditions Item Code : EHSE6.0-TH vc=10m/min n = 530min-1 f=0.04mm/rev v f=21mm/min Cutting fluid: Water-soluble coolant Machine : M/C EHSE -TH Conventional

The diagrams and table data are examples of test results, and are not guaranteed values. "Epoch" , “ ” and “ ” are registered trademarks of Mitsubishi Hitachi Tool Engineering, Ltd. in Japan. Attentions on Safety 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. 2. Cautions regarding mounting (1) Before use, check the...