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Title:
粉末状金属のマルチローブ状工具及び作成の方法
Document Type and Number:
Japanese Patent JP2007532320
Kind Code:
A
Abstract:
A tool made of powdered metal, such as a modified T15 HSS in powdered form, and having a multi-lobular end profile for punching multi-lobular recesses into workpieces, such as into the heads of fasteners. The tool is homogenous and contains only carbides which are relatively small, such as in the 1-4 micron range. Also provided is a method of fabricating such a tool. The method requires that a powdered metal bar is cut and then the cut piece is worked to provide the multi-lobular tool. The final part is theoretically 100% dense, as opposed to being only 95-98% dense as in metal injection molded parts. In use, the final part, due to how it is fabricated, has increased column strength and increased impact resistance.

Inventors:
Edward Kretecca
Sean Curts
Application Number:
JP2007508342A
Publication Date:
November 15, 2007
Filing Date:
March 03, 2005
Export Citation:
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Assignee:
Accument Intellectual Properties LLC
International Classes:
B21J13/02; B21K1/44; B21K1/46; B21K5/20; B22F3/24; B22F5/00; B23P13/04; C21D1/00
Domestic Patent References:
JPH05118313A1993-05-14
JPH0539503A1993-02-19
JPS62120401A1987-06-01
JP2000017307A2000-01-18
JPS6314805A1988-01-22
JP2003138302A2003-05-14
JPH0229430U1990-02-26
Attorney, Agent or Firm:
Toshio Umeda
Kazuya Chikatsu