Invention Grant
- Patent Title: Cut-off end surface improvement
- Patent Title (中): 切断端面改善
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Application No.: US13741557Application Date: 2013-01-15
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Publication No.: US09120143B2Publication Date: 2015-09-01
- Inventor: Jeffrey W. Carper
- Applicant: National Machinery LLC
- Applicant Address: US OH Tiffin
- Assignee: NATIONAL MACHINERY LLC
- Current Assignee: NATIONAL MACHINERY LLC
- Current Assignee Address: US OH Tiffin
- Agency: Pearne & Gordon LLP
- Main IPC: B21K27/06
- IPC: B21K27/06 ; B21F5/00 ; B21J1/02 ; B21J9/02 ; B21F1/00

Abstract:
A method of improving the surface finish of a sheared end face of a cylindrical blank in a progressive forming machine comprising deforming the end face out of its original as sheared transverse plane into a first shape concentric with the axis of the blank that slightly departs from the original plane a distance that increases with proximity to the axis of the blank, thereafter deforming the end face from the first shape into a second shape in a direction opposite a direction the first shape was displaced from the original shear plane, the second shape slightly departing from a transverse plane a distance that increases with proximity to the axis of the blank.
Public/Granted literature
- US20140196518A1 CUT-OFF END SURFACE IMPROVEMENT Public/Granted day:2014-07-17
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