Motorized machine that simulates martial arts sparring

A machine that simulates martial arts sparring comprising:

• a.) an upper, a mid, and a lower Alpha Body that are vertically aligned and secured by interfaces at two locations and wherein a programmable servo motor is configured to rotate each or a plurality of the Alpha Bodies;
• b.) wherein the interfaces are located firstly between a bottom distal end of the upper Alpha Body and a top distal end of the mid Alpha Body, and secondly between a bottom distal end of the mid Alpha Body and a top distal end of the lower Alpha Body;
• c.) wherein each interface includes an upper press fit bearing cup and a lower press fit bearing cup, wherein the upper press fit bearing cup has a race for accepting an upper retaining ring with bearings, wherein the lower press fit bearing cup has a race for accepting a lower retaining ring with bearings, and wherein the press fit bearing cups each have holes for accepting threaded bolts about an outer surface thereof;
• d.) the retaining rings with bearings each having a modified flange with holes for accepting the respective threaded bolts;
• e.) a washer with a race at one surface thereof for accepting the upper retaining ring with bearings, the washer having a radially extending lip from another surface thereof for accepting the race of the lower press fit bearing cup, and the washer further having a threaded bore for accepting a central threaded bolt which, when tightened, creates a compression socket for the interface, coupling the press fit bearing cups together;
• and
• f.) an upper half ring and a lower half ring, wherein the upper half ring is coupled to the outer surface of the upper press fit bearing cup, wherein the lower half ring is coupled to the outer surface of the lower press fit bearing cup, and wherein the half rings each have holes for accepting the respective threaded bolts.