Cylindrical grinding machine

It is a grinding machine for machining the outer surface of the workpiece cylindrical, conical or other shape and the end surface of the shoulder. The workpiece is supported between the two tips of the head frame and the tailstock, and is rotated by the dial of the head frame for circular feeding motion. The headstock and the tailstock are mounted on the workbench for longitudinal reciprocating feed motion. The workbench is divided into two upper and lower layers, and the upper workbench can be adjusted to a small angle to grind the conical surface. The wheel frame with high-speed rotating grinding wheel is used for lateral feed movement. Large cylindrical grinder to reduce the length of the machine, the table is generally stationary, while the wheel frame for longitudinal reciprocation and infeed movement. The grinding precision of the cylindrical grinding machine is generally: roundness does not exceed 3 microns, surface roughness Ra 0.63 ~ 0.32 microns; high precision cylindrical grinding machine can reach roundness 0.1 micron and Ra 0.01 micron respectively. The cylindrical grinding machine is divided into a plunge-type cylindrical grinding machine, an end-face cylindrical grinding machine and a universal cylindrical grinding machine. Plunge-type cylindrical grinding machine: When the length of the grinding part of the workpiece is less than the width of the grinding wheel, the grinding wheel only needs to be continuously fed in the transverse direction, and does not have to move relative to the workpiece. The productivity of the grinding machine is high. End cylindrical grinding machine: The grinding wheel frame is inclined at an angle around the vertical axis, and the grinding wheel surface is trimmed into two grinding surfaces parallel and perpendicular to the workpiece axis, which can simultaneously grind the outer circle and the shoulder end surface of the workpiece, which is generally used for Mass production. Universal Cylindrical Grinder: The grinding wheel frame is equipped with an internal grinding attachment. The grinding wheel frame and the head frame can be adjusted at an angle around the vertical axis. The spindle can also rotate on the head frame in addition to the rotation of the dial. This kind of grinding machine can enlarge the processing range, grind the inner hole and the inner and outer taper with large taper, suitable for small and medium batch and single piece production. In addition, there are double grinding wheel cylindrical grinding machines and multi-grinding wheel external grinding machines, which can grind two or more journals at the same time, which is suitable for mass production.