Invention Grant
- Patent Title: Method for manufacturing a thread-forming screw
- Patent Title (中): 螺纹螺纹的制造方法
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Application No.: US12639839Application Date: 2009-12-16
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Publication No.: US08696477B2Publication Date: 2014-04-15
- Inventor: Franz Huber , Martin Pleil , Carl Hoffmann , Andreas Vorhauer , Simon Oppeneiger , Berthold Aumueller , Georg Oberndorfer , Juergen Gahn , Corinna Achleitner
- Applicant: Franz Huber , Martin Pleil , Carl Hoffmann , Andreas Vorhauer , Simon Oppeneiger , Berthold Aumueller , Georg Oberndorfer , Juergen Gahn , Corinna Achleitner
- Applicant Address: LI Schaan
- Assignee: Hilti Aktiengesellschaft
- Current Assignee: Hilti Aktiengesellschaft
- Current Assignee Address: LI Schaan
- Agency: Crowell & Moring LLP
- Priority: DE102008054824 20081217
- Main IPC: B21H3/02
- IPC: B21H3/02

Abstract:
A method for manufacturing a thread-forming screw having a shank and a thread formed in one piece with the shank and region-wise circumferentially arranged on the shank, is disclosed. After the formation of the thread on the shank, a plurality of recesses is subsequently stamped into the thread. Then, a plurality of compact cutting elements is welded into the recesses in the thread, where the cutting elements are made of a hard material and have a hardness greater than the hardness of the thread. Additionally, a stamping device for carrying out the method is also disclosed.
Public/Granted literature
- US20100216560A1 METHOD FOR MANUFACTURING A THREAD-FORMING SCREW Public/Granted day:2010-08-26
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