Chip-scattering prevention cover

A chip scattering prevention cover which is configured to be attached to a tip dresser rotary cutter including a shaft portion having a central axis aligned with a rotation axis;

• a disk shaped head portion formed at one end of the shaft portion and unitary with the shaft portion on a back surface side thereof to have a central axis aligned with the rotation axis;
• a curved surface formed at a center of the head portion and capable of fitting loosely an electrode tip for spot welding with a central axis of the electrode tip being aligned with the rotation axis;
• a cutout gap extending along the rotation axis to reach the curved surface for a continuous cutout in the shaft portion and the head portion;
• and a cutting part configured to be attached to an inner surface of the cutout gap, having a blade portion that extends in a direction intersecting with the rotation axis, and configured to cut by the blade portion the electrode tip loosely fitted onto the curved surface due to rotation about the rotation axis, for preventing chips created during cutting of the electrode tip by the blade portion from scattering, the chip scattering prevention cover comprising:
• an annular portion configured to be detachably fitted over an outer peripheral edge of the head portion;
• and
• a plate portion extending inwardly of the annular portion from an inner circumference portion of the annular portion and having a corresponding shape to the cutout gap, the plate portion configured to fit with a region of the cutout gap corresponding to the head portion to cover the cutout gap when the annular portion is fitted over the head portion,
• wherein the annular portion and the plate portion are positioned not to protrude beyond a level of a surface of the head portion of the rotary cutter toward an opposite side of the head portion from the shaft portion when the annular portion is fitted over the head portion.