Eccentric seat for an automobile grinding machine

An eccentric seat of an automobile grinding machine comprising:

• a base comprising
• a base body having a longitudinal direction;
• a base space formed along the longitudinal direction of the base body;
• and
• a base hole formed in the base body and communicating with the base space and comprising an axial direction;
• a grinding device inserted into the base space and comprising
• a bearing mounted in the base space and abutting the base body;
• a grinding head mounted in and abutting the bearing and comprising
• an end;
• and
• a head hole formed radially in the end of the grinding head and selectively aligned with the base hole;
• and
• a linking-fixing unit inserted into the base hole moveably along the axial direction of the base hole, engaged the base and comprising
• an inserting end selectively inserted into the head hole;
• and
• a pulling end opposite to the inserting end.