Electric multipurpose saw

The utility model discloses an electric multipurpose saw. The utility model comprises a housing (7), a motor (44), an upper and a lower frames (52, 46), a gear (17), a reciprocating swinging mechanism, a saw blade (3) and a saw bit clamping device, wherein, the reciprocating swinging mechanism is composed of a swinging core shaft (18), a swinging shaft (49), a swinging bearing seat (13), a pressing ring (51), a steel sleeve (53) and an output shaft (16), wherein, the swinging core shaft (18) is parallel to a rotor shaft and is arranged between the upper and the lower frames (52, 46) through bearings (47, 19); the swinging shaft (49) is arranged on the swinging core shaft (18) and forms a definite inclination angle; the swinging bearing sleeve (13) and a bearing (14) in the swinging bearing sleeve (13) are arranged on the swinging shaft (49) and is positioned in the axial direction through the pressing ring (51) and the steel sleeve (53); the swinging bearing sleeve (13) is connected with the output shaft (16) through a ball head (57); an oil-retaining bearing (12) is respectively matched with the upper and the lower frames (52, 46). After the structure is used, the utility model has the characteristics of reasonable structure, high rigidity, small vibration, high efficiency, less abrasion, long service life, convenient saw bit exchange, etc.