1. Column is fixed on the bed, and guideway body is in front of the column; balance spring, main motor and belt gear are inside the column.
2. Gearbox is fixed on the guideway body; speed changing gears of main drive are after quenching grinding.
3. Headstock may move vertically along the guideway body; spindle sleeve may make vertical movement.
4. Spindle bearings adopt preloading roller bearing to bear radial force in cutting.
5. Grating ruler is used for positioning, which can maintain positioning accuracy for a long time
6. Three-point support is convenient to adjust the machine level.