Invention Grant
- Patent Title: Cutting tap and method of making a cutting tap
- Patent Title (中): 切割龙头和切割龙头的方法
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Application No.: US11582805Application Date: 2006-10-18
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Publication No.: US07665934B2Publication Date: 2010-02-23
- Inventor: Willard E. Henderer , Vladimir Volokh , Sadayuki Akaki
- Applicant: Willard E. Henderer , Vladimir Volokh , Sadayuki Akaki
- Applicant Address: US PA Latrobe JP Tokyo
- Assignee: Kennametal Inc.,Yamawa Manufacturing Ltd
- Current Assignee: Kennametal Inc.,Yamawa Manufacturing Ltd
- Current Assignee Address: US PA Latrobe JP Tokyo
- Agent Matthew W. Smith
- Main IPC: B23B51/00
- IPC: B23B51/00

Abstract:
A cutting tap that has an elongate tap body with a fluted section at the axial forward end thereof wherein the fluted section includes a chamfered fluted section and a finishing fluted section. Each cutting thread in the chamfered fluted section has a cutting face disposed at a cutting face angle that becomes more negative the more axially rearward the cutting thread is from the axial forward end of the chamfered fluted section. Each cutting thread in the finishing fluted section has a cutting face disposed at a finishing cutting face angle that is essentially equal. The finishing cutting face angle is more negative than the cutting face angle for the cutting thread at the axial rearward termination of the chamfered fluted section.
Public/Granted literature
- US20080095587A1 Cutting tap and method of making a cutting tap Public/Granted day:2008-04-24
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