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 |