STP-SERIES
Description
- All essential castings are rib reinforced to provide a rigid machine structure for long lasting accuracy and stability.
- The precision cartridge spindle equipped with 4 pieces of preloaded class 7 (p4) super precision angular contact ball bearings to ensure high accuracy and superior grinding finish.
- Spindle, couplings, and spindle motor (7.5HP) are precisely balanced for low vibration and powerful output to achieve precision grinding accuracy.
- Rigid table with box-type structure travels on a cushion of oil with no metal-to-metal contact to provide excellent way longevity.
- Column guideways are Turcite-B coated and precisely hand scraped to provide a smooth movement for better accuracy and longer way life.
- The rigid wheelhead travels on wide contact hardened and ground guideways and is precisely positioned with a stepping motor to ensure better downfeed repeatability.
- Crossfeed mechanism incorporate with a precision ball screw, AC inverter provides smooth accurate crossfeed and allows criss-cross grinding for better grinding surface finish.
- Hydraulic, coolant and lubrication systems are separated from machine to eliminate vibration and dissipate heat. Heat exchange is used on hydraulic system to maintain normal temperature of hydraulic oil.
- All moving surfaces and rotating parts are continuously lubricated by an auto-lube system to ensure long service life and maintain maximum accuracy. An alarm light will illuminate if oil pressure drops below present pressure.
- Positioning accuracy and repeatability is assured with an AC servo motor and high precision pre-tensioned ballscrew.
Specifications
| SPECIFICATIONS | SADDLE TYPE | |||
|---|---|---|---|---|
| PL-2550CNC | PL-3060CNC | |||
| Travel | Grinding surface of table | mm | 250 X 500 | 300 X 600 |
| Max. grinding surface | mm | 250 X 500 | 300 X 600 | |
| Max. distance center of spindle to table | mm | 550 | 600 | |
| Feeding | Table speed approx. | M/min | H: 3~25 B: 1~15 | |
| Rapid power cross feed | mm/min | 1100 | ||
| Rapid power up/down | mm/mm | 550 | ||
| Min. feeding setting | mm | 0.001 | ||
| Motor | Spindle motor | HP | 3 | 7.5 |
| Motor for vertical feed | 800W AC servo motor | |||
| Motor for cross feed | 800W AC servo motor | |||
| Motor for X axis | H: 1HP B: 1KW AC servo motor | H: 2HP B: 1KW AC servo motor | ||
| Wheel | Speed | rpm | 3500[60HZ] / 2900[50HZ] | 1750[60HZ] / 1450[50HZ] |
| Dimension | mm | 180 X 13 X 31.75 | 355 X 50 X 127 | |
| Weight | Net weight | kgs | 2500 | 3000 |
| Dimension | Machine | mm | 2800 X 2500 X 2300 | 2950 X 2600 X 2400 |
| Structure | vertical | Linear guide way with ball screw | ||
| Cross | Linear guide way with ball screw | |||
| X axis | H: Box way with hydraulic cylinder B: Linear guide way with ball screw | |||
| Controller | Grinding mode | Surface, Criss-cross, Plunge, Pitch (different pitch and same depth) | ||
| Controller | SIEMENS 828D or FANUC Series 0i-MF | |||
- The manufacture reserve the right to modify the mechanism specifications, etc. without prior notice.
Features
- Balancing Stand
- Electromagnetic Chuck
- Auto. Demagmetizer
- Permanent Magnetic Chuck
- Digital Readout
- Spare Wheel Flange
- Dust Collector
- Radius Dressing Attachment
- Angle Dressing Attachment
- Parallel Fressing Attachment
- Coolant System W/Paper Filter
- Combine Coolant & Dust Collector
- Coolant System W/Mag. Sep. & Paper Filter
- Manual Demagnetizer (For Permanent Chuck Use)