Extrusion tap

• Main Authors: LIU YULONG, ZHANG XIANGUO, GUO DONGTAO, YAN CHUNYU, LI MANLIANG, LU HAIBO
• Format: Patent
• Language: Chinese; English
• Published: 02.03.2018
• Subjects: MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; THREAD CUTTING; TRANSPORTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTIONTHEREWITH

The utility model provides an extrusion tap, is including crowded reamer part, extrusion portion, stalk portion, the stalk portion includes transition rod portion and centre gripping stalk portion, the one end and the crowded reamer part fixed connection of extrusion portion, the other end of extrusion portion and the one end fixed connection of transition rod portion, the other end and the centregripping stalk portion fixed connection of transition rod portion, the surface of extrusion portion is provided with the external screw thread, crowded reamer part is awl body structure, and crowdedreamer part's major diameter end and the fixed connection of extrusion portion, crowded reamer part's pointed end are spherical structure, crowded reamer part's cone angle is 8 degrees~60 degrees. This designs, and not only processingquality is high, high, the long service life of machining efficiency, and application range is wide moreover. 种挤压丝锥，包括挤扩孔部、挤压成型部、柄部，所述柄部包括过渡杆部与夹持柄部，所述挤压成型部的端与挤扩孔部固定连接，挤压成型部的另端与过渡杆部的端固定连接，过渡杆部的