Three shaft parallel main shaft head mechanism for realizing multidirection vertical and horizontal processing

The utility model discloses a three shaft parallel main shaft head mechanism for realizing multidirection vertical and horizontal processing which is composed of a fixing platform, three rotary pair assemblies, three moveable auxiliary assemblies, three perch assemblies, three spherical pair assemblies, a movable platform assembly and a spindle unit. Three rotary pair assemblies which are in 120 degrees distribution are connected with the fixing platform. Three moveable auxiliary assemblies are respectively connected with three rotary pair assemblies. Three perch assemblies are respectively connected with three moveable auxiliary assemblies. Three spherical pair assemblies are respectively connected with three perch assemblies. The movable platform assembly is connected with three rotary pair assemblies which are in 120 degrees distribution. The spindle unit is arranged on the movable platform assembly. The movable platform assembly drives the spindle unit to do Z shaft longitudinal shift relative to the fixing platform and do A shaft rotation and B shaft rotation. The parallel connection mechanism has high feed speed, high specific stiffness and high precision. The rotating ranges of the A shaft and the B shaft are bigger than 90 degrees . The three shaft parallel main shaft head mechanism for realizing multidirection vertical and horizontal processing can realize multidirection vertical and horizontal processing and is suitable to be used for the three shaft parallel main shaft head mechanism with 3-RPS and 3-PRS principles.