Quick-changing tool for scraping and milling oil changing hole small end faces

The utility model relates to a quick-changing tool for scraping and milling oil changing hole small end faces. The quick-changing tool comprises a scraper row, a scraper, a rolling bearing and a fastening bolt. The scraper comprises a scraper cutting edge used for machining and a scraper assembling section used for clamping, and the scraper is mounted on the scraper row in a sleeved mode; the rolling bearing is forcedly pressed on the scraper row; the fastening bolt enables the scraper to be fixed and locked on the scraper row, and the scraper cutting edge is perpendicular to the central axis of the scraper row. The quick-changing tool is identical with a drill bit in mounting mode, the quick-changing tool is mounted as long as the scraper row is inserted into a drilling spindle, tool mounting time is greatly reduced, and the quick-changing tool is simple in structure, convenient and quick to mount and dismount, economical, practical, high in machining efficiency, low in production cost and good in implementa