Coring Apparatus for Rubber Stator

An apparatus for coring out rubber stator material from inside a housing, the apparatus comprising:

• at least one drive having a shaft passable inside the housing, the at least one drive operable to rotate the shaft and move the shaft axially;
• a head disposed on the shaft, the head being rotated about the axis and being pulled along the axis inside the housing;
• at least one blade pivotably connected to the head and removing the rubber stator material at least partially from inside the housing with the rotation and the pulling of the head inside the housing;
• and
• an actuator associated with the at least one blade and operable to adjust a pivot of the at least one blade relative to the head.

An apparatus for cutting back rubber stator material from inside an end of a housing, the apparatus comprising:

• at least one drive having a shaft passable inside the housing, the at least one drive operable to rotate the shaft and move the shaft axially;
• a head disposed on the shaft, the head being rotated about the axis and being moved along the axis inside the housing;
• at least one blade pivotably connected to the head and removing the rubber stator material at least partially from inside the end of the housing with the rotation and the movement of the head into and out of the end of the housing;
• and
• an actuator associated with the at least one blade and operable to adjust a pivot of the at least one blade relative to the head.

A method of removing rubber stator material from inside a housing, the method comprising:

• rotating at least one of a head and the housing about an axis;
• moving at least one of the head and the housing along the axis;
• removing the rubber stator material at least partially from inside the housing with the rotation and the movement by engaging at least one first blade on the head against the rubber stator material;
• and
• adjusting a pivot of the at least one first blade relative to the head.