An external cylindrical grinder generally consists of a cast iron bed body, a worktable, a headstock and tailstock that support and drive the workpiece to rotate, a grinding wheel rack (grinding head) that installs the grinding wheel, a transverse feed mechanism that controls the size of the grinding workpiece, and electrical and hydraulic devices that control the movement of the machine tool's moving parts. The common faults of the equipment are as follows:
(1) The fixed joint surface of the bare drill knife holder is not very easy to touch;
(2) The clearance between the main shaft bearings of the high-precision cylindrical grinder grinding wheel frame tends to be large and poor;
(3) The selection of the main parameters for the headstock speed ratio and grinding wheel repair rate during grinding is unreasonable;
(4) The model and specifications of the grinding wheel used do not match the material of the workpiece being produced.
The processing method is as follows:
(1) Re grind the fixed seat of the bare drill bit to ensure good adhesion. After tightening, use a gauge to measure the top of the bare drill bit. When moving, the horizontal cylindrical grinder should not exceed 0.01mm, while considering factors such as whether the bare drill bit is sharp;
(2) The clearance of the main shaft bearing of the sound pressure grinding wheel holder should be within the required range, while considering negative pressure.