Method and a device for manufacturing a tool and a tool made by the method
AssigneeSeco Tools AB
InventorsMattias Puide, Johnny Bruhn, Mikael Grönkvist
Life of this patent
Estimating the term…
Abstract
A rotary tool such as a helix drill and an end mill for example, is manufactured by forming a blank by an extrusion process, and then sintering the blank. During the extrusion, a mixture is passed through a die which provides a cylindrical shape to the outer peripheral surface of the mixture. A plurality of jaws are disposed downstream of the die for conducting the mixture. Each jaw includes a helical ridge for engaging the outer surface of the extrudate to cause a helical groove to be formed therein which constitutes a chip flute in the tool. During the extrusion, the jaws are moved away from the mixture to terminate formation of the chip groove, whereby a shank portion of the tool is formed.
Claims6
A method of manufacturing a rotary tool for chip removing machining;
- comprising the steps of:
- A) providing mixture of a hard metal powder and a carrier;
- B) heating the mixture;
- C) extruding the heated mixture in a feed direction through a die which forms the mixture with a cylindrical outer surface;
- D) conducting the mixture past a flute-forming structure which forms a chip flute along a first section of the outer surface;
- E) displacing the flute-forming structure laterally away from the outer surface during step C for terminating the chip flute formation along a second section of the outer surface which defines a shank portion;
- F) allowing the mixture to solidify and form a blank;
- and
- G) sintering the blank.
Dependencies are inferred from the claim text.