High-precision machining system

A machining system for machining a scroll blade the system comprising:

• a scroll blade holding spindle, rotatable in a predetermined manner,
• at least one tool on at least one tool holder facing the scroll blade,
• said machining system having a first axis defining the direction for feeding said tool, a second axis perpendicular to said first axis and a third axis perpendicular to said first axis and said second axis,
• said scroll blade holding spindle and said tool are movable relative to each other about at least said first axis and said second axis,
• simultaneous control of relative movement in the direction of said second axis and rotation about an axis of said scroll blade which is parallel to said first axis,
• whereby a machining resistance is created between the work-piece and the tool during a machining operation;
• said scroll blade holding spindle and said tool holder rotate relative to each other about a B-axis, which is an axis parallel to said third axis, in response to a detected change in the machining resistance to thereby correct any machining error, and
• said B-axis does not move relative to a machining point even when said scroll blade and said tool move relative to each other.

A machining method for performing internal grinding on an internal surface of a cylindrical work-piece held by a work spindle, the method comprising:

• rotating the cylindrical work-piece in a predetermined manner about a rotation axis of the work spindle,
• grinding the cylindrical work-piece using a grinding tool held by a tool holder at a position facing said work-piece while rotating the grinding tool about a rotation axis of the tool holder in a predetermined manner, by relative movement of the cylindrical work-piece and the grinding tool in an axis perpendicular to said rotation axis of the work spindle and in the radius direction of said cylinder,
• whereby a machining resistance is created between the work-piece and the grinding tool during the grinding;
• rotating said work spindle and said tool holder relative to each other about a pivot axis of rotation in response to a detected change in the machining resistance to thereby correct any machining error, and
• wherein said pivot axis of rotation does not move relative to a machining point even when said work-piece and said tool move relative to each other.

A machining system for machining a work-piece, the system comprising:

• a workpiece holding spindle, rotatable in a predetermined manner,
• a tool on a tool holder arranged at a position facing the work-piece,
• said machining system having a Z-axis defining the direction for feeding said tool, an X-axis perpendicular to said Z-axis, a Y-axis perpendicular to said Z-axis and said X-axis, and a work-piece C-axis parallel to said Z-axis,
• said work-piece holding spindle and said tool are movable relative to each other about at least said X-axis and said Z-axis,
• regarding at least the two axes about which said relative movement is possible, said relative movement between said work-piece holding spindle and said tool can be controlled simultaneously,
• whereby a machining resistance is created between the work-piece and the tool during a machining operation;
• said work-piece holding spindle and said tool holder rotate relative to each other about a pivot axis of rotation in response to a detected change in the machining resistance to thereby correct any machining error, and
• the pivot axis of rotation does not move relative to a machining point.