Large gear involute artifact assembled with mandrel

A large gear involute artifact assembled with mandrel, comprising:

• a large gear involute artifact stripe (1), a mandrel (2), a backing plate (3), a counterweight shaft (4), an adjustable counterweight ring (5), the setting screws for adjusting counterweight (6), the connecting screws for backing plate (7), the connecting screws for artifact and an eccentric multi-ball bearing (9);
• the large gear involute artifact stripe (1) is of integrated symmetrical structure, one end has the artifact tooth, and the other end have the connecter (1-4) of artifact stripe used for installing, positioning and locking, the radial datum shaft of artifact stripe (1-6) and the locking screws of artifact stripe (1-7);
• the middle of the two ends is connected with the support arm of artifact stripe (1-3);
• the artifact tooth comprise a left flank of gear involute artifact (1-1) and a right flank of gear involute artifact (1-2) of shaft which are axial symmetry along with the radial datum shaft of artifact stripe (1-6);
• the large gear involute artifact stripe (1) fixedly connected to the mandrel (2) with the backing plate (3), the counterweight shaft (4), the connecting screws for backing plate (7), and the connecting screws for artifact (8);
• the mandrel (2) is the machining and measurement datum shaft of the large gear involute artifact, which is of symmetrical structure at both ends;
• the two parallel flat grooves (2-2) in the connecting shaft section of mandrel (2-1) are machined symmetrically relative to the mandrel axis;
• the middle of flat grooves of mandrel (2-1) has a datum inner hole (2-4) whose centerline is orthogonal to mandrel axis, and used as the assembly datum of the large gear involute artifact stripe together with the flat grooves of mandrel of surface;
• the flat grooves of mandrel (2-2) have the close-packed locking screw holes of artifact stripe for connecting with the large gear involute artifact stripe (1) and the backing plate (3);
• from the connecting shaft section of mandrel to the two ends, there are the axial datum ring surface (2-6), the radial datum cylindrical surface (2-7), the locking screws of base-circle plate (2-8) and the center holes (2-9) of mandrel in sequence;
• the axial datum ring surface (2-6) and the radial datum cylindrical surface (2-7) of the mandrel are axial datum and radial datum of the large gear involute artifact respectively.