Nachi GSX MILL VL Carbide End Mills

Manufacturer: Nachi-fujikoshi corp
Model: GSX MILL VL

Outline

Endmill with unequal tooth spacing and variable leads to suppress chattering
It specializes for Titanium alloy and for Carbon steels and the series is made.
GSX II coating for greater heat and wear resistance. plus anti-adhesion properties.

Code	Structural Steels	Carbon Steels	Pre-Hardened Steels Alloy Steels	Hardened Steels Mold Steels	Hardened Steels		Stainless Steels		Titanium Alloys Nickel Alloys	Cast Irons
Code	SS400	S45C S50C	SGr NAK	25 to 40HRC	40 to 50HRC	50 to 65HRC	SUS304 SUS316	SUS420	—	FCD/FC
GSXVL4	○	◎	◎	◎	×	◎	◎	◎	—	◎
GSXVL4T								◎	◎

GSX II coating
With the multi-layer of heat resistance coating and hard coating. GSX MILL VL supports cutting of hardened materials. With high wear resistance and anti-adhesion properties. stable chip removal is realized for a wide range of work materials.

Features

Unequal spacing of teeth.
Variable leads
Reduce vibration and realize high quality milling by adapting unequal index and lead design.
Comparison of vibration
Applicable to wide range of materials by two seriesApplicable to wide range of materials by two series

Applicable materials	For Steel	For Ti and Stainless
Applicable materials	Carbon Steels Pre-Hardened Steels Alloy Steels Die Steels	Stainless Steels Titanium Alloys Inconel718, etc
Feature	Apply Specially designed Cutting Edge to get good surface finish Better surface finish	Apply suitable carbide material for difficult to machine material Higher helix angle for better removability.

GSX-II Coating
Excellent heat resistance
Achieve high heat Resistance with Al-rich composition.Multi layer structure
High hardness of coating in according to multi layer structure with AlCr and AlCrX.
Crystal structure
Great wear and resistance with optimum crystal structure.
Evaluation of oxidation resistance
Status of coating films after keeping with 1.100°C in the air after 1 hour
GSX MILL VL Series

Geometry	FL	2.5D	4D	5D (over hang length)
For Steel	Square	GSXVL4-2.5D φ3~20	GSXVL4-4D φ3~20
	Radius	GSXVL4-R-2.5D φ6~20	GSXVL4-R-4D φ6~20
	Multi Flutes	GSXVL6-2.5D φ6~20
	Long Shank			GSXVLLS4-1.5D φ3~20
For Ti・SUS	Square	GSXVL4T-2.5D φ3~20	GSXVL4T-4D φ3~20
	Radius	GSXVL4T-R-2.5D φ6~20	GSXVL4T-R-4D φ6~20
	Multi Flutes	GSXVL6T-2.5D φ6~20
	Long Shank			GSXVLLS4T-1.5D φ3~20

Performance

GSX MILL VL Anti-Vibration Effect

Tool: Ø10
Speed: 130 m/min
Feed: 1,460 mm/min
0.09 mm/tooth
Depth of cut: ap = 10 mm, ae = 2 mm
Material: S50C
No-chatter
Higher quality surface finish
Comparison of surface roughnessTool: Ø10
Speed: 188 m/min
Feed: 4,000 mm/min (0.167 mm/tooth)
Depth of cut: ap = 20 mm, ae = 2 mm
Material: S50C
Surface roughness comparison of milling on Titanium alloys

Tool: Ø10
Speed: 188 m/min
Feed: 4,000 mm/min (0.167 mm/tooth)
Depth of cut: ap = 20 mm, ae = 2 mm
Material: S50C
Wear comparison after 140m milling of stainless steels (SUS304)

Tool: Ø10
Speed: 100 m/min
Feed: 770 mm/min
Material: SUS304
Cutting Fluid: Wet
Milling Length: 140 m
The wear of GSXVL4T is very small and normal.
Possible to keep milling.
Application example of pocket thin-wall milling of Titanium Alloys

Milling operation	Cutting Speed	Feed Speed	Depth of cut
Inner surface of the pocket Rough	Vc 90m/min	Vf 680mm/min fz 0.06mm/t On corner Vf 460mm/min fz 0.04mm/t	ap 10mm ae 0.7mm
Inner surface of the pocket Rough	Finish Vc 120m/min	Vf 900mm/min fz 0.06mm/t On corner Vf 600mm/min fz 0.04mm/t	ap 10mm ae 0.1mm
Outer surface of the pocket Rough	Vc 90m/min	Vf 690mm/min fz 0.06mm/t	ap 10mm ae 0.7mm
Outer surface of the pocket Rough	Finish Vc 120m/min	Vf 1000mm/min fz 0.086mm/t	ap 10mm ae 0.1mm

Tool: GSXVL4T-2.5D
Ø10 × 25 × 70 × Ø10
Material: Ti6Al4V
Fluid: Water Soluble
High speed milling of thin wall.
Reduction Process in SUS410J

Tool: Ø12mm Radius R2mm (4 flutes)
Milling Condition
Speed: V94 m/min (N 2,500 min⁻¹)
Feed: 500 mm/min (0.05 mm/tooth)
Depth of cut: ap = 28
Material: SUS410J
Coolant: Wet