Technology

Valve Body Model DH31-S / 48HRC MRBTNH345 / Long Taper Neck Ball End Mill

Work size: 50×50×50(mm)
       (Cutting Depth: 30mm)

Material: DH31-S 48HRC
Cutting time: 10 hr 47 min

MRBTNH345 improved higher rigidity with taper neck design than existing long neck type.

Tool

MRBTNH345
R1×1°×20 · R1×1°×30 · R1.5×1°×30


•Higher rigidity brought by taper neck than existing long neck.
•MUGEN-COATING PREMIUM because of high heat resistance, realized long tool life for hardened steels.
•High effective machining achieved by NS original 3-flute design.


MHDH645R
φ6×R1×12


•Realized stably long tool life against high hardened steels (48~65HRC).
•Corner radius to prevent flute chipping, and high helix angle for cutting sharpness.


MHDH645
φ6×18


•L/D=2 and L/D=3 length of cut selection.
•Realized stably long tool life against high hardened steels (48~65HRC).
•Improved milling deflection and accuracy by advanced flute design.

Cutting Condition

Cutting process Pre-roughing Roughing Semi-roughing 1st Semi-finishing 2nd Semi- finishing Finishing
Side Bottom
Tool MHDH645
φ6×18
MHDH645R
φ6×R1×12
MRBTNH345
R1.5×1°×30
MRBTNH345
R1×1°×20
MRBTNH345
R1×1°×30
MRBTNH345
R1×1°×30
Spindle speed
(min-1)
9,000 6,000 10,000 10,000 10,000 6,000
Feed
(mm/min)
3,000 3,000 1,600 1,000 1,000 800
Depth of cut
ap×ae(mm)
9×0.2 0.1×4 ap0.1 ap0.1 ap0.05 0.15×0.05 0.05×0.1
Stock
(mm)
0.2 0.2 0.2 0.05 0.05 -
Coolant Oil mist
Cutting time 35 min 15 min 1 hr 17 min 2 hr 6 min 3 hr 40 min 2 hr 54 min

Comment

Stable milling quality on side and bottom surface has realized with taper neck design which is applicable for high efficient 3 dimensional milling and MUGEN-COATING PREMIUM for prolong tool life.