Self-plugging rivet annular groove thread rolling wheel

• Main Authors: LIU ZHI'ANG, CHEN DAIHONG, LI JIA, ZHANG XIAOYI, QIU TINGGUI, GAO MIN, LIN YI, LIU QINGSHU, LIU TAO, XU GUIQING
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2020
• Subjects: MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS,WHEELS, RINGS, BARRELS, BALLS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING

The utility model discloses an annular groove thread rolling wheel for a blind rivet. The utility model relates to the field of rivet ring groove machining. Thread rolling wheel is a cylinder, the outer side wall of the thread rolling wheel is provided with a thread used for machining an annular groove. The cross section of the thread is in the shape of a right trapezoid, the acute included angleof the cross section of the thread rolling wheel thread ranges from 27 degrees to 33 degrees, the thread pitch of the thread rolling wheel thread ranges from 0.7 mm to 0.9 mm, the difference between the small diameter and the large diameter of the thread rolling wheel thread ranges from 0.23 mm to 0.25 mm, and the upper bottom of the cross section of the thread rolling wheel thread is 0.2 mm. Theself-plugging rivets are machined in a ring groove rolling mode through the threads of the thread rolling wheel, so that the ring grooves of the self-plugging rivets are formed, the machining stability can be improved to a lar