Surface Grinder Kamioka G-3A4080

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Reference: Kamioka G-3A4080

Condition: New product

FEATURES

High rigidity casting components may effectively disperse all reaction force, while absorbing vibration during movement. For mirror-effect grinding on high-hardness materials, such as SKD-11 and tungsten carbide, there is great resistance of grinding. However this machine has been tested to achieve surface roughness of Ra 0.015 um

The cross and longitudinal feed employs 12mm non-contact circular proximity sensor for directional change. Its outstanding dust-proof and water-proof performance is superior to another device

The cross and longitudinal feed employs 12mm non-contact circular proximity sensor for directional change. Its outstanding dust-proof and water-proof performance is superior to another device

Y, Z axes are transmitted through 32mm diameter, class C3 precision ball screws with double nuts.

The spindle head is well balanced on the column. The ball-screw is located at the center of column and the spindle head with weight ratio 5:4. The end face of the spindle head is precision scraped, and is precision mounted when installing the spindle. This will prevent spindle from deformation due to stress	The vertical feed is driven by a 0.75kW servo motor. It drives the precision ground worm through backlash-free coupling that drives a phosphor bronze worm gear. The worm/worm gear set drives the ball screw for vertical feed, that allows for 1um micrometric feed.

SAMPLE APPLICATION

Mirror-effect Grinding Test

Workpiece Material: SKD-11, Ruche HRC62-degree

Workpiece Size: 270x380x45mm

Grinding Time: 3.5hours

Test Result:

Parallelism 2um

Flatness 3um

Surface Roughness Ra 0.015um


Item/Model No.	Unit	G-3A4080
Capacity
Table Size	mm (in.)	400×800 (15.75×31.5)
Longitudinal Travel	mm (in.)	900 (35.43)
Cross Travel	mm (in.)	450 (17.72)
Spindle Center to Table	mm (in.)	615 (24.21)
Magnetic Chuck Size	mm (in.)	400×800 (15.75×31.5)
Longitudinal Feed
Manual Travel	mm (in.)	930 (36.61)
Automatic Travel	mm (in.)	910 (35.83)
Table Traverse Rate	M/min	5~25
Cross Feed
Manual Travel	mm (in.)	470 (18.5)
Automatic Travel	mm (in.)	450 (17.72)
Automatic Feed (Variable)	mm	0.5~10
Hand Wheel per Revolution	mm	5
Hand Wheel per Graduation	mm	0.02
*Micrometric Adjustment per Revolution	mm	-
*Micrometric Adjustment per Graduation	mm	-
Rapid Traverse Rate	mm/min (ipm)	1,000 (39.37)
Vertical Feed
Hand Wheel per Revolution	mm	x=0.1mm,x10=1mm,x20=2mm
Hand Wheel per Graduation	mm	x1=0.001mm,x10=0.01mm,x20=0.02mm
*Micrometric Adjustment per Revolution	mm	-
*Micrometric Adjustment per Graduation	mm	-
Rapid Traverse Rate	mm/min (ipm)	500 (19.69)
Automatic Feed (Variable)	mm	*0.001~0.099
Grinding Wheel
Grinding Wheel Size (OD×W×BD)	mm	355×50×127
Spindle Speed	rpm	1,720(60hz) / 1,425(50hz)
Motor
Spindle Motor	kW (HP)	5.63 (7.5)
Hydraulic Motor	kW (HP)	2.25 (3)
Cross Feed Drive		1/5HP
Vertical Feed Drive		Servo Motor 0.75kW
General Information
Total Rated Horsepower	kW (HP)	9 (12)
Dimension (W×D×H)	mm (in.)	2,900×2,200×2,240 (114.17×86.61×88.19)
Machinery Weight (Net)	kg (lb.)	3,600 (7,920)