Machining examples
■ Precision form fabrication 1 of turbine blade material
Machining of inconel alloy with shape error of within ±1μm
■ Inconel shape machining
Grinding of maximum 160mm in length is possible.
Features
1. Machining with amazing accuracy and efficiency at a speed of 400 reverse rotations/min.
In order to achieve efficient and accurate machining while minimizing damage to the workpiece and grinding wheel, a vertical high reciprocating table is mounted. (With VHG-80, a maximum of 400 reciprocating motions per minute is possible at a stroke of 60mm.) By restricting infeed amount per time, damage to the workpiece and grinding wheel is reduced and a machining amount per unit time is increased, thus realizing highly accurate and efficient machining.
2. Table mechanism with no reverse shock or friction
The table guideway employs Nagase original non-contact hydrostatic guide. The vibration damping property is high because of friction-free and wear-free characteristics, and vibration is minimized because of the mutually vibrating table reverse rotation structure. Reverse rotation with ultra-low vibration does not cause a coin standing on its side to fall when placed on the table interlocked with the machine.
3. Ultra-micro infeed by rigid horizontal spindle and cross positioning spindle
Rigid horizontal infeed axis and cross positioning axis of the grinding wheel spindle employ a rigid rolling guide so that high positioning repeatability and accurate micro infeed in units of 0.1μm can be done.
4. High-rigidity and high-accuracy spindle installed on both sides
The rigid grinding wheel spindles arranged in the horizontal direction are effective for simultaneous machining on both sides. Because of a stress balance maintained on both sides of the workpiece, the grinding wheel and workpiece are less damaged, the grinding wheel once formed is hard to be deteriorated and the service life of the grinding wheel is prolonged largely compared to the conventional method.
5. Right/left rotary dresser for higher efficiency and accuracy
A rotary dresser is mounted on each side of the right/left grinding wheel spindles. Dressing is possible, as required, to prevent the grinding wheel from being deformed and abrasive grains from being worn in order to ensure stable, accurate and efficient machining.
■ Vertical-type high reciprocating machining
The shape of the formed grinding wheel on the right and left sides each is transferred to the workpiece set on the center table.
■ The ultra-low vibration vertical-type high reciprocating table does not cause a coin standing on its edge to fall.
Series
○ Vertical-type large-size high reciprocating forming grinder VHG-160
An ultra-high speed vertical-type high reciprocating table with maximum 150 reverse rotations/min (at the stroke of 160mm) is mounted. The mutual vibration mechanism minimizes the effect of table reverse rotation shock on the grinding surface. The combination of the highly rigid grinding wheel spindle and the horizontal infeed axis/cross positioning axis employing an accurate rolling guide enables accurate infeed even of hard-to-cut materials.
○ High-accuracy and high-efficiency form fabrication forming grinder SGC-96
After form fabrication of the grinding wheel, form fabrication grinding of not only steel and ceramics but also new materials and hard-to-cut materials is done efficiently. Unconventionally accurate positioning and rigidity are ensured to minimize damage to materials during machining. The machine is designed to minimize the effect of errors in perpendicular parallelism such as machining load fluctuation or posture change, and enhance machining accuracy. Various guideway structures can be combined and a peripheral system can be mounted.
Specifications
| Model/item | Size | Grinding length and stroke (in the longitudinal and cross directions) |
Grinding width | Min. unit in cross direction | Min. unit in longitudinal direction | Loadable weight | Grinding wheel size (OD x W x ID) |
|---|---|---|---|---|---|---|---|
| mm | mm | mm | mm | mm | kg | mm | |
| VHG-80 | 80 | 40×80 | 50(60) | 0.0001 | 0.0001 | 15 | φ250〜450×50（60）×φ127 |
| VHG160 | 160 | 100×160 | 80 | 0.0001 | 0.0001 | 35 | φ250〜φ405×80×φ127 |
| Model/item | Size | Chucking size | Table movement amount (longitudinal x cross) |
Table top surface Spindle center |
Min. unit in vertical direction | Min. unit in cross direction | Grinding wheel size (OD x W x ID) |
Grinding wheel axis |
|---|---|---|---|---|---|---|---|---|
| mm | mm | mm | mm | mm | mm | mm | kW | |
| SGC | 96 | − | 1170×470 | 820 | 0.0001 | 0.0001 | φ250〜510×38〜50×φ127 | 7.5 |
■ Contents and specifications are subject to change without prior notice. The contents of description and pictures may contain optional items. To place an order, check the manufacture specifications for detailed contents.
■ Actual machine accuracy and machining accuracy described on this site may differ depending on the measurement and machining conditions.
■ For further details, you may request specifications, technical information, etc.
■ For resale or export of the product, contact us in advance. Exporting products requires designated procedures as determined by the Foreign Exchange and Foreign Trade Control Law.
■ This product must not be transferred for any purposes of use that prevents international peace and security, or used for one’s own purpose or by any third party.
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Inquiries
Customers who are thinking of introducing new facilities are welcome to ask us for test machining or to visit our factory. Please feel free to consult us. Inform us of your facility conditions, size and material of machining workpieces, machining time, etc., in details.
Sales personnel in your district will make a proposal designed to meet your requirements.
