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　　Surface grinder is a kind of large grinder. The grinding wheel is mainly used to rotate and grind the workpiece to achieve the required flatness. According to the shape of the worktable, it can be divided into two types: rectangular worktable and circular worktable. The main parameters of the plane grinder of the rectangular worktable are the width and length of the worktable, and the main parameters of the circular worktable are the diameter of the worktable. According to the different types of shaft, it can be divided into horizontal shaft and vertical shaft grinder. Such as m7432 vertical axis circular table surface grinder, 4080 horizontal axis rectangular table surface grinder.

　　A type of grinder that grinds the surface of a workpiece or forms its surface. The main types are horizontal axis moment table, horizontal axis round table, vertical axis moment table, vertical axis round table and various special plane grinder.

　　① Horizontal axis grinding machine with rectangular table: the workpiece is sucked or clamped on the working table by the rectangular electromagnetic working table, and makes longitudinal reciprocating motion. The grinding wheel rack can make the transverse intermittent feed along the dovetail guide rail of the sliding seat, and the sliding seat can make the straight intermittent feed along the guide rail of the column.

　　② Vertical axis and circular table surface grinder: the grinding wheel spindle installed vertically grinds the workpiece with the end face of the grinding wheel, and the grinding wheel rack can make intermittent straight feed motion along the guide rail of the column. The workpiece can be grinded continuously on the rotary table, and the output power is high. In order to facilitate the loading and unloading of workpieces, the circular worktable can also move longitudinally along the guide rail of the bed.

　　③ Horizontal axis circular table surface grinder: it is suitable for grinding circular thin slice workpiece, and can use the working table to obliquely grind out annular workpiece with different thickness.

　　④ Vertical axis and rectangular table surface grinder: because the diameter of the grinding wheel is larger than the width of the worktable, the grinding area is larger, so it is suitable for efficient grinding.

　　⑤ Double end grinding machine: grinding two parallel planes of the workpiece at the same time with the end of the grinding wheel of two grinding heads. There are two types of horizontal axis and vertical axis. The workpiece is guided by the linear or rotary feeding equipment through the grinding wheel. This kind of grinder has high power and is suitable for mass production of bearing rings, piston rings and other parts. In addition, there are also special grinding machines for grinding the guide surface of machine tools and the profile of turbine blades.