I. Structural Characteristics and Performance of Machine Tools
1. The machine tool is fixed with a grinding wheel frame, and moves through the guide wheel frame;
2. The body of machine tool is integrally casted by cast iron, with good thermal stability and rigidity;
3. The V flat guide surface of the worktable adopts imported plastic-coated materials so as to improve the wear resistance of the guide rail and reduce the friction resistance during the movement of the guide rail;
4. The grinding wheel is of cantilevered structure. The spindle of the grinding wheel adopts multi-piece long bearing bush dynamic-pressure oil film bearing;
5. The guide wheel frame is of double support structure, and guide wheel’s spindle bearing bush is an integral 1:30 conical sliding bearing; and the support end adopts an integral sliding bearing, which is lubricated and cooled by active oil.；
6. The speed of guide wheel is regulated by AC frequency conversion stepless speed regulation, which can be adjusted arbitrarily within the range of 10r/min ~ 200r/min.
| Diameter of grinding | Through-feed grinding | 7-40mm |
| In-feed | 2-40mm | |
| Max grinding length（standard bracket） | Through-feed grinding | 140mm |
| In-feed | 120mm | |
| Specification of grinding wheel | PSA350x125x127mm | |
| Specification of guide wheel | PSA250×125×75mm | |
| Rotation speed of grinding wheel | 1870r/min | |
| Rotation speed of guide wheel (stepless speed) | working speed | 20～180r/min |
| dressing speed | 250 r/min | |
| Rotation angle of guide wheel | In vertical plane | -2°～ +4° |
| In horizontal plane | 0°～+3° | |
| Distance from the center of grinding wheel and regulating wheel to the bottom surface of bracket | 220mm | |
| Total power (9.03kw) | Motor for grinding wheel | 7.5kw |
| Motor for guide wheel | 1.1kw | |
| Hydraulic motor | 0.25kw | |
| Lubrication motor | 0.09kw | |
| Cooling motor | 0.09kw | |
| Power source | 3N～50Hz 380V | |
| Machine tool’s overall dimension | 1780x890x1380mm | |
| Net weight of machine tool | 2500kg | |
| Work accuracy (Standard test piece Φ20x75mm,45# steel) |
Roundness | 0.0015mm |
| Cylindricity | 0.002mm | |
| Roughness | Ra0.16μm | |