Electric cylinder adopting electromagnetism to switch linear motion or rotary motion

An electric cylinder adopting electromagnetism to switch linear motion or rotary motion comprises a cylinder body part, a motor unit, an annular magnetic encoder, a reverse planetary roller lead screw pair, a sliding assembly, an electromagnetic coil, a friction seat and a friction plate. By changing the magnetic field direction of the electromagnetic coil, the electric cylinder can be quickly switched between output linear motion and rotary motion; the electric cylinder can be rapidly switched between linear motion and rotary motion only by controlling one motor and one electromagnetic coil, the control difficulty and cost are reduced, the overall structure is compact, space is saved, and the electric cylinder is suitable for occasions with small thrust, small torque and limited installation space. 一种采用电磁切换直线或旋转运动的电动缸，包括缸体部分、电机单元、环形磁编码器、反向式行星滚柱丝杠副、滑动组件、电磁线圈、摩擦座和摩擦片；本发明通过改变电磁线圈的磁场方向，使电动缸在输出直线运动和旋转运动之间快速切换；只需控制一个电机以及一个电磁线圈，就能使电动缸在直线运动和旋转运动之间快速切换，降低了控制难度和成本，整体结构紧凑，节省空间，适用于小推力小扭矩且安装空间受限的场合。