THREAD-ROLLING DIE FOR MACHINING CLINCHING STUD BOLT

摘要

The present invention relates to a thread-rolling die comprising: a mold body (1) provided with a plurality of uneven units (2) for screw machining formed on a side thereof, and separated from a fixing die (51) to be arranged to face the fixing die (51) to move in parallel and form a screw with a clinching groove on a bo a groove rolling unit (10) arranged on an upper surface of the mold body (1); and a guide unit (20) to guide the head of a clinching bolt to be machined. The groove rolling unit (10) is made of a flat member to be arranged on the upper surface of the mold body (1). The guide unit (20) fixes the groove rolling unit (10) on the upper surface of the mold body (1) to protrude partially. The thread-rolling die further comprises a holder (30) to support the mold body (1), the groove rolling unit (10), and the guide unit (20). The durability of a mold is improved, and required size precision can be obtained. Also, the guide unit, the grooving rolling unit, and the mold body are assembled on the holder, and a coolant and chip discharge groove is formed on the holder to improve cooling effects by a coolant when thread rolling and remove chips created by effective discharge of the coolant to prevent damage to a machining surface by chips.;COPYRIGHT KIPO 2020