Rotor and motor

The invention provides a rotor and a motor, relates to the technical field of rotors, and solves the technical problems that a motor is large in vibration noise and large in cogging torque harmonic wave. The rotor comprises two sections of rotor iron cores and permanent magnets, permanent magnet grooves are formed in the rotor iron cores, and the permanent magnets are fixed in the permanent magnet grooves; the permanent magnet is of a variable cross-section rectangular structure with double cross sections, which is formed by locally translating the contact surfaces on the two sides outwards respectively; a rotating included angle b is also formed between the double sections; a preset offset angle which has the same rotation angle with the double sections exists between the two sections of rotor iron cores, so that the skewed pole rotor is formed after splicing; the electric machine includes a rotor. The segmented skewed pole rotor is adopted, the cogging torque period is greatly increased, the cogging torque