Sealing surface processing machine and method

A sealing surface processing machine used for a valve device that includes

• a valve main body provided with a flow channel of a fluid,
• a valve drive unit configured to open and close the flow channel by a valve body that is inserted into the flow channel from an opening of the valve main body, and
• an attachment plate configured to close the opening by being fixed to the valve main body via a seal member, the machine being configured to perform cutting of an attachment surface of the seal member in the valve main body, the machine comprising:
• a pedestal attached to the valve main body;
• a main body movably supported on the pedestal;
• a tool holder configured to hold a tool for processing the attachment surface;
• a rotating part configured to rotate the tool holder relative to the main body around an axis parallel to a movement direction of the valve body;
• a first moving part configured to move the tool holder relative to the main body along a first direction along which the valve body moves;
• a second moving part configured to move the tool holder relative to the main body along a second direction intersecting with the movement direction of the valve body;
• a first adjustment device configured to adjust a position of the main body in the first direction relative to the pedestal;
• and
• a second adjustment device configured to adjust a position of the main body in the second direction relative to the pedestal,
• wherein the pedestal is spaced by a predetermined gap from the attachment surface in the valve main body.