Full-metal anti-high temperature cycloid downhole motor

A full-metal anti-high temperature cycloid downhole motor, comprising an outer tube (1), a stator (6) fixedly mounted in the outer tube (1), a rotor (9) provided in the stator (6) and having the same height as the stator (6), a partition plate (5) and a flow distribution disc (7) respectively fixed to two ends of the stator (6), and a flow guide mechanism located at a side of the flow distribution disc (7) away from the stator (6), wherein the flow guide mechanism cooperates with the flow distribution disc (7) to perform a flow distribution to drive the rotor (9) to rotate in the stator (6);

• an inside of the stator (6) is provided with N grooves (62) distributed equidistantly on a circumference thereof and extending through the stator (6) along an axial direction of the outer tube (1), inner side walls of the N grooves (62) are connected together to form an annular inner contour surface (63), wherein N is a natural number greater than 1;
• the rotor (9) is formed with N−1 rotating heads (91) provided along the axial direction of the outer tube (1), a working chamber is formed among the adjacent rotating heads (91) and the inner contour surface (63), the partition plate (5) and the flow distribution disc (7), and each rotating head (91) is provided with an embedding slot (92) that extends through the rotating head (91) along the axial direction of the outer tube (1), one side of the embedding slot (92) is provided with a notch of the same length as the embedding slot, a rotor copper rod (93) that is in rolling engagement with the inner contour surface (63) through the notch is provided in the embedding slot (92), and there is a changing gap between an outer wall of the rotor copper rod (93) and an inner wall of the embedding slot (92).