Rolling die and a method of making a rod with a ball portion

Details Rolling die and a method of making a rod with a ball portion Rolling die and a method of making a rod with a ball portion

2007-10-09

2007-10-09

Suhol, Dmitry (Department: 3725)

Metal deforming

By use of tool acting during relative rotation between tool...

During rotation of work

C072S469000, C029S557000

Reexamination Certificate

active

11491977

ABSTRACT:
A rolling die is provided for forming a rod member with a ball portion. The rolling die includes a first die member and a second die member facing the first die member. Each of the first die member and the second die member has a process surface. The process surface has a start forming portion having a process tooth configured to bite the rod member and an arc surface portion proximate the process tooth, an intermediate forming portion having the process tooth and a curved surface proximate the process tooth, the curved surfaced being configured to press the rod member to form an arched shape, and a finish forming portion having the process tooth and a hemispheric groove configured to press the rod member into the arched shape to form the ball portion.

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patent: 2004-66246 (2004-03-01), None
patent: WO 2005051594 (2005-06-01), None

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