Vibration table

A vibration table, comprising:

• a magnetic circuit device for generating a magnetic field;
• a moving coil skeleton, disposed in the magnetic circuit device, adapted for reciprocating in a magnetic field generated by the magnetic circuit device along a direction of a central axis of the moving coil skeleton, and having a placement groove with an upward opening;
• an adapter, disposed in the placement groove;
• an excitation coil, radially winding along an outer peripheral wall of the moving coil skeleton and located in the magnetic field generated by the magnetic circuit device;
• wherein, the moving coil skeleton is provided with a cut-off groove through the moving coil skeleton,
• wherein, the magnetic circuit device comprises:
• a lower armature, provided with a lower armature groove;
• a permanent magnet, disposed in the lower armature groove;
• a middle armature, located above the permanent magnet;
• and
• an upper armature, sleeved on the moving coil skeleton to cover an opening of the lower armature groove.