MOLDINO - EPDREH-TH3,EPDRH-TH3 : Radius End Mill for Hardened Steel | JSR GROUP

 

 

Radius End Mill for Hardened Steel

EPDREH-TH3

EPDRH-TH3 

Small-radius deep-milling radius end mill for hardened steel

DC8mm to 12mm added to the 4-flute lineup!TH3 Coating benefits and unique cutting edge profile enables long-life/high-accuracy milling of hardened steel.

Features of EPDR(E)H-TH3

Corner radius precision guaranteed for high-accuracy milling
TH3 Coating for milling hardened steel
Tool design optimized for high-accuracy milling

 

EPDREH-TH3
2 Flutes φ0.2～φ1 ［ 53 Items］
(Corner Radius R0.02～R0.2)
4 Flutes φ1～φ6 ［266 Items］
(Corner Radius R0.02～R1)
EPDRH-TH3
4 Flutes φ8～φ12 ［26 Items］
(Corner Radius R0.2～R2)

 

 Task We need high-precision milling. But high-accuracy milling requires measuring the actual tool diameter.And diameter corrections take time.

 

 Point The corner radius of Evolution type uses the tool centerline as its datum independent of the tool diameter. This allows high-accuracy milling compared to conventional tools, even when using nominal diameters.
*The corner radius of EPDRH-TH3 (DC8mm～12mm) uses the tool diameter as its datum.

 

High-precision corner radius   Comparison between cutting remain for vertical wall milling using nominal diameter

 

  

【Cutting conditions】
Tool dia : φ1(RE0.1)　No. of flutes : 4flutes 
Cutting speed : vc = 66m/min   Feed per tooth : fz = 0.021mm/t
Depth of cut : ap × ae = 0.02×0.02mm   
Work material : STAVAX(52HRC)   Coolant : Mist blow

 

 Task Machined surface is not smooth enough for finishing of hardened steel.Machined surface is uneven after long time machining then it will take long time for polish.

 

 Point A positive cutting edge profile is adopted for the bottom cutting edge.  Thus, improved machined surface quality for hardened steel is achiveved.

 

Good level of shine for bottom face finishing
(“ABCDE” text is reflected)

 【Cutting conditions】
Bottom face finishing
Tool dia. : φ3(RE0.1)
No. of flutes : 4flutes 
Cutting speed : vc = 131m/min
Feed per tooth : fz = 0.025mm/t
Depth of cut : ap × ae = 0.028×0.05mm
Work material : STAVAX(52HRC) 
Coolant : Mist blow

 

 Task We want to switch to automated operation. But with direct milling of hardened steel, we never know when a tool might break.

 

 Point The tools combine carbide base material designed for hardened steel machining with the TH3 Coating, offering improved wear resistance and allowing longer machining usage over conventional tools!

 

TH3 Coating   Small damage after 11 hours of finish processing

Features and performance

・Hard surface coating for outstanding wear and heat resistance
・Outstanding impact resistance to minimize risk of sudden damage
・Long tool life when machining hardened steels of 50 HRC or harder

 Target steel grades

・Hardened steels (especially 50 HRC or higher) ; high-speed steel

 

Tool photo after use

Flank wear : 0.005mm

 【Cutting conditions】
Tool dia：φ1（ RE0.2）
Under neck length ：2mm
No. of flutes： 2 flutes
Work material：STAVAX(52HRC)
Cutting speed：vc =125m/min 
Feed per tooth：fz = 0.005mm/t
Depth of cut：
           ap × ae = 0.005×0.005mm
Coolant：Air blow

 

 Point  TH3 features a special nanostructure to minimize degradation of the coating layer!