Permanent magnet motor rotor punching sheet and permanent magnet motor rotor

The utility model discloses a permanent magnet motor rotor punching sheet and a permanent magnet motor rotor. The punching sheet comprises a punching sheet body and arc-shaped splicing blocks. The outer arc radius and the inner arc radius of the arc-shaped splicing block are unequal; a plurality of lightening holes, two waist-shaped holes and two magnetic steel groove openings are formed in the arc-shaped splicing block; the lightening holes, the kidney-shaped holes and openings of the magnetic steel grooves are distributed on the two sides of the central axis of the arc splicing block in a mirror image mode, and the openings of the magnetic steel grooves form V-shaped grooves with the included angle ranging from 150 degrees to 160 degrees. A rotor portion; the number of the tensioning screws is the same as that of the kidney-shaped holes; the number of the A-state iron cores is equal to that of the B-state iron cores; the A-state iron core and the B-state iron core are laminated in a segmented manner to form