本发明涉及一种方法和装置，其在移动的手段，设置在可动沿着轨道底盘磨石作用导轨（3）的行驶表面（7）上，其特征在于，使用多个研磨石（7）。 根据本发明的磨石（7）被单独地或周期性地在基团的操作期间提出的，然后再次下降，其中清洁的各磨石（7）的提升期间进行的磨石（7）的工作表面。 在轨道的弯曲在接近开关（12）改变所述砂轮的位置（7）可相对于磨石（7）确定垂直移动液压单元（11），其中所述通孔的横向导向件（10），所述液压装置（11）的位置可调节 ，

The present invention relates to a method and an apparatus which in which by means of movable, is arranged on a along the rail track movable chassis grinding stones (7) acting on the running surface of rails (3), wherein a plurality of grinding stones (7) is used. According to the invention the grinding stones (7) are individually or in groups periodically raised and lowered during operation again, wherein cleaning is carried out of the working surfaces of the grinding stones (7) during the lifting of the respective grinding stone (7). In rail curvatures changing the position of the grindstone (7) relative to a grindstone (7) vertically moving hydraulic unit (11) is detected via proximity switch (12), wherein the position of the hydraulic unit (11) via a transverse guide (10) can be adjusted ,