This machine tool is a wide grinding wheel centerless grinding machine. It’s adopts the double-sided movement mode, one is grinding wheel frame and the other is guide wheel frame. The grinding wheel frame makes feeding movement, and the guide wheel frame makes adjustment movement, to facilitate automatic wire connection and configuration of feeding devices such as long workpieces and bearing rings (special orders).
I. Structural Characteristics and Performance of Machine Tools
1. The grinding wheel has wider width and larger load capacity, which can reduce the number of repeated grinding and improve the production efficiency;
2. The spindles for both grinding wheel and guide wheel are of double support structure, adopting multi-piece dynamic-pressure bearings and forced lubrication by active oil;
3. The feeding guide rail of grinding wheel frame adopts hydrostatic guide rail, which can be moved quickly, and can realize micro feeding, with certain shock resistance. The guide rail is not easy to wear;
4. The driving of guide wheel’s spindle adopts AC frequency conversion stepless speed regulation.
II.Technical Parameters
| Diameter of grinding | Through-feed grinding | 10~100mm | |
| In-feed | 10~100mm | ||
| Max grinding length（standard bracket） | Through-feed grinding | 300mm | |
| In-feed | 390mm | ||
| Specification of grinding wheel | P500×400×305mm | ||
| Specification of guide wheel | P350×400×203mm | ||
| Rotation speed of grinding wheel | 1330r/min | ||
| Rotation speed of guide wheel (stepless speed) | 10~200r/min | ||
| Rotation angle of guide wheel | In vertical plane | -2°~+4° | |
| In horizontal plane | -2°~ +4° | ||
| Adjustment of axial displacement of guide wheel | ±15mm | ||
| Total feeding stroke of grinding wheel frame | 120mm | ||
| Feeding rate per graduation in scale of grinding wheel frame’s hand wheel | 0.02mm | ||
| In-feed travel amount of grinding wheel frame | rapid feed | 7mm | |
| coarse feed | 0.9mm | ||
| precise feed | 0.1mm | ||
| Total feeding stroke of guide wheel frame | 145mm | ||
| Feeding rate per graduation in scale of wheel frame’s hand wheel | 0.01mm | ||
| Feeding value per graduation in scale of grinding wheel dresser hand wheel | 0.01mm | ||
| Feeding value per graduation in scale of guide wheel dresser hand wheel | 0.01mm | ||
| Rotation angle (in horizontal plane ) of guide wheel dresser | -2°~+4° | ||
| Adjustment of displacement of diamond for guide wheel dresser | -5~+25mm | ||
| Distance from the center of grinding wheel and regulating wheel to the bottom surface of bracket | 290mm | ||
| Total power(25.59)kw | Motor for grinding wheel | 22kw | |
| Motor for guide wheel | 2.2kw | ||
| Hydraulic motor | 0.75kw | ||
| Lubrication motor | 0.09kw | ||
| Cooling motor | 0.55kw | ||
| Power source | 3N～50HZ 380V | ||
| Machine tool’s overall dimension | 4100mm×1850mm×1720mm | ||
| Net weight of machine tool | 10000kg | ||
| Work accuracy (Standard test piece Φ30x200mm,45# steel) |
Roundness | 0.002mm | |
| Cylindricity | 0.003mm | ||
| Roughness | Ra0.32um | ||