DuAl EX Hob - Nachi America · · DuAl EX Hob without coating on cutting face after re-grinding has...
Transcript of DuAl EX Hob - Nachi America · · DuAl EX Hob without coating on cutting face after re-grinding has...
DuAl EX Hob● Suitable for both dry and wet hobbing● Supports a wide range of machining
environments and methods● Exhibits the best performance in conventional
cutting range (Cutting speed 60 to 160m/min)
● Specifications for re-grinding (no coating on cutting face)
Select coating according to application
Wet hobbing
Hyper DuAl SP
Hyper DuAl GP
DuAl EX
50 100 200 300
Hyper DuAl SP(For re-coating)
Hyper DuAl GP(For re-coating)DuAl EX
(For re-grinding)
(m
m/re
v)➡
Dry hobbing
Standard efficiency High efficiency Hyper efficiency
For re-grinding/re-coating
For re-grinding
Feed
Hyper efficiency
High efficiencyStandard
efficiency
Cutting Speed (m/min)
Comparison of wear without coating on cutting face
Test conditions• Workpiece specifications: m1.7 × PA18°× NT49, SCr420H • Hob specifications: O.D. 70mm × NT16 × 4TH No coating on cutting face
• Cutting conditions: V=150m/min, f=1.8mm/rev, climb cutting, dry condition, 2,000 operations
0.14
0.12
0.1
0.08
0.06
0.04
0.02
0
DuAl EX Competitor Coated hob for dry cutting Hyper DuAl GP
Wea
r (m
m)
VB wear on top tooth
VB wear on bottom tooth
No coating on cutting face With coating on cutting face (re-ground and re-coated)
Same tool life as other brand re-coated hob
· DuAl EX Hob without coating on cutting face after re-grinding has same tool life as other brand Hob after re-grinding and re-coating.· This eliminates re-coating fees and reduces inventory, providing a significant advantage in tooling costs