MACHINING APPARATUS WITH SPINDLE DRIVE SYSTEM AND METHOD OF MACHINING A MEMBER USING SUCH AN APPARATUS

摘要

Systems and methods are disclosed for material treatment within a member or for removal of material from within a member. Embodiments have a spindle powered by a motor or motors positionable within the member during operation of the spindle; and, in certain particular aspects, such systems and methods are for forming a stator for a downhole motor.