Deburring apparatus and deburring method

A deburring apparatus, comprising:

• a housing which includes a shank, a seat surface, and a mechanism chamber arranged along a shank-axis;
• a recovery rod including a first flange portion, the recovery rod being reciprocable along the shank-axis;
• a tilting shaft including a second flange portion opposite to the first flange portion and a spherical bush supported on the seat surface, the spherical bush having a tilting center on the shank-axis, the tilting shaft being arranged along a tilting axis passing through the tilting center and tiltable around the tilting center;
• an elastic member which forces the recovery rod toward the tilting shaft;
• a holder arranged on the tilting shaft in a manner rotatable through a predetermined rotation angle relative to the tilting shaft, the holder fixing a cutter;
• a rotary-to-rectilinear motion conversion mechanism including a plunger movable along the tilting axis on the holder, the rotary-to-rectilinear motion conversion mechanism separating the first flange portion from the second flange portion and bringing the plunger into contact with the recovery rod on the tilting axis when the holder rotates in a direction opposite to a rotation direction of the shank;
• and
• a rotation transmission mechanism which transmits a rotation of the housing to the tilting shaft.