Japanese

TEL +81 774-45-3611

FAX +81 774-45-3600

Super Precision High Efficiency Cylindrical Grinding Machine

NOG-2HF

Grinding between centers

Simultaneous rough and finish grinding between centers

simultaneous

3-axis Structured High Efficiency Cylindrical Grinding Machine

NOG-2HF is a high efficiency cylindrical grinding machine which is composed of L/R table (workhead spindle), B/F grinding wheel spindle 1 and B/F grinding wheel spindle 2. Each axis is controlled independently.

3axes
3axes

Arrangement Patterns of Grinding Wheels

∗Arrangement cannot be changed after determing arrangement specification.

arrangement arrangement

Simultaneous rough and finish grinding provides you various effects

The two independent grinding wheels enable the simultaneous rough and finish grinding. This allows divided rough and finish machining process into one process. Furthermore, it can improve work efficiency such as reducing time for changeovers and operators' loads.

effect

Grinding sintered materials without preprocessing

Even unprocessed sintered materials can be ground between centers. Especially, it is suitable for grinding tool base materials and cold forging punches.

tools

Suitable for step grinding of tools

Workpiece Clamping Methods

Workhead Spindle

Tailstock

Special Workhead Spindle

Standard centers are available.

Standard centers are available.

Replace a dedicated faceplate to exchange dead/live center.

Replace a tailstock itself to change center size.

Mounting a dedicated center, which can reduce center's abrasion compared to dead center, on the workhead sipndle.

Our original high accuracy live center which has high rigidity and enables precision machining is adopted.

Combining of double centers and high efficiency grinding

Sample 1

Punches of press dies

Material and size

Carbide: ∅25 × 250 mm
Grinding length: approx. 250 mm
Max. grinding allowance: ∅1.4 mm

Rough Grinding Wheel

#170 ∅250 mm
●Using diamond wheel

Finish grinding wheel

#800 ∅250 mm
●Using diamond wheel

sample

Sample 2

Step grinding of tool base materials

Material and size

Carbide: ∅15 × 150 mm
Grinding length: approx. 150 mm
Max. grinding allowance: ∅2.5 mm

Rough grinding wheel

#170 ∅250 mm
●Using diamond wheel

Finish grinding wheel

#800 ∅250 mm
●Using diamond wheel

sample

Grinding long and thin punches and small diameter pins∗1

Sample 3

Long punch pins of dies

Material and size

Carbide: ∅5 × 175 mm
Grinding length: approx. 135 mm
Max. grinding allowance: ∅2.5 mm

Rough grinding wheel

#170 ∅250 mm
●Using diamond wheel

Finish grinding wheel

#800 ∅250 mm
●Using diamond wheel

sample

∗1 Steady rest
Mounting a steady rest (option) to grind long and thin workpieces, such as a grinding length is five times longer than the workpiece's OD. Moreover, this steady rest enable the machine to grind small diameter pins that are less than ∅0.1 mm.

Specifications

ItemsNOG-2HF
Method of holding workpieceGrinding between centersHeadstock: Dead center: MT No.3/Live center
(Replace a dedicated feceplate to exchange dead/live center.)
Tailstock: Dead center: MT No.2/Live center
(Replace a tailstock itself to change center size.)
CapacitySwing over table∅180 mm
Distance between centers300 mm
Max. workpiece sizeExternal ∅50mm, length 300mm, weight 2kg
Swivel tableFor adjusting cylindricity
Workhead sindle (X)Max. travel680 mm
Min. input increment0.0001 mm
Speed0 ∼ 1000 rpm
Hole through spindle∅20 mm
Grinding wheel spindleⅠ(Y)Max. travel50 mm
Min. input increment0.0001 mm
Motor5 kW
Speed0 ∼ 6000 rpm
Swivel angle0 ∼ 10.5 deg.
Wheel fixing methodDedicated flange
Wheel size∅250 mm
Grinding wheel spindleⅡ(Z)Max. travel60 mm
Min. input increment0.0001 mm
Motor5 kW
Speed0 ∼ 6000 rpm
Swivel angle0 ∼ 10.5 deg.
Wheel fixing methodDedicated flange
Wheel size∅250 mm
Lubrication systemAutomatic lubrication system
Machine size (W×D×H)2105 × 1962 × 1580 mm
Floor space (W×D×H)2220 × 2955 × 1580 mm
Machine weightApprox. 2500 kg
ControlFANUC
PowerAC 200 V
Power consumption34.7 kVA
Control voltageDC 24V / AC 100 V
The contents are subject to change without notice.