The machine is mainly used for boring large and deep holes, (such as the cylinder body of locomotives, steamships, and cars) and also can mill the surface of the cylinder. Servo-motor controls the table’s longitudinal move and the spindle up and down. Spindle’s whirl uses a variable-frequency motor to adjust the speed, so it can achieve step-less speed change. The electricity of the machine is designed for PLC and man-machine interaction
| Weight | 7500 kg |
|---|---|
| Dimensions | 228 × 206 × 314 cm |
| Manufacturer | SJMC |
| Model | T7240 |
| Max.boring diameter, mm | 400 |
| Max. boring depth, mm | 750 |
| Spindle carriage travel, mm | 1000 |
| Spindle speed (stepless speed change for frequency conversion) | 50~1000r/min |
| Spindle feed travel speed | 6~3000mm/min |
| Distance from spindle axis to carriage vertical plan | 500mm |
| Distance from spindle end-face to table surface | 25~ 840 mm |
| Table dimensions L x W | 500X1600 mm |
| Table longitudinal travel | 1600mm |
| Main motor ( Variable-frequency motor) | 33HZ,5.5KW |
| Boring dimension accuracy | IT7 |
| Milling dimension accuracy | IT8 |
| Roundness | 0.008mm |
| Cylindricity | 0.02mm |
| Boring roughness | Ra 1.6 |
| Milling roughness | Ra 1.6 – Ra 3.2 |
| Overall dimensions | 2281X2063X3140mm |
| N.W/G.W | 7500/8000KG |
Equipment
Standard equipment:
1. Spindle O300(boring hole diameter O305-400mm)
2. Universal boring and milling head
3. Cutter head 250mm
4. Morse taper #4 (boring hole diameter O21-48)
Optional equipment:
1. Spindle O280(boring hole diameter O285-320mm)
2. Spindle O200 (boring hole diameter O205-285mm)
3. Spindle O150 (boring hole diameter O151-200mm)
4. Spindle O110 (boring hole diameter O111-165mm)
5. Spindle O75 (boring hole diameter O76-115mm)
6. Spindle O56 (boring hole diameter O57-78mm)
7. Spindle O45 (boring hole diameter O46-60mm)
8.V-block fixing device
9. Fast clamping device
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