Patents Assigned to Fraisa Holding AG
  • Patent number: 8007209
    Abstract: A milling tool for the processing of workpieces by cutting is provided with multiple cutting flanks (3) and flutes (4) arranged in between these. The cutting flanks (3) have cutting edges (6) along the cutting side (5) of which bezels (10) are provided. At least one bezel (10) extending along a cutting edge (6) has an effective cutting angle (y2) that differs from the effective cutting angles (y2?, y2?, . . . ) of the bezels (10) extending along the further cutting edges (6). This asymmetric arrangement of the bezels (10) in a tool results in a calmer running of the tool which impacts the surface quality of the processed surface and results in a better serviceable life of the tool.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: August 30, 2011
    Assignee: Fraisa Holding AG
    Inventors: Josef Maushart, Tiziano Sichi
  • Patent number: 7771141
    Abstract: A milling tool for roughing workpieces is provided with a plurality of cutting flanks and flutes disposed in between. The cutting flanks are provided on the cutting side with a predetermined rake angle, and the cutting edges have moreover a profile of wave form that extends over the width of the cutting flanks. The profile of wave form is provided with a bevel having a width corresponding to at least the height of the crest, and having a wedge angle that is more obtuse than the wedge angle of the milling tool. When the tool is subjected to heavy operational demands, a chipping or breaking off of the crest edges is thereby prevented, thus increasing the service life of the tool.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: August 10, 2010
    Assignee: Fraisa Holding AG
    Inventors: Tiziano Sichi, Josef Maushart
  • Publication number: 20080069650
    Abstract: A milling tool for the processing of workpieces by cutting is provided with multiple cutting flanks (3) and flutes (4) arranged in between these. The cutting flanks (3) have cutting edges (6) along the cutting side (5) of which bezels (10) are provided. At least one bezel (10) extending along a cutting edge (6) has an effective cutting angle (y2) that differs from the effective cutting angles (y2?, y2?, . . . ) of the bezels (10) extending along the further cutting edges (6). This asymmetric arrangement of the bezels (10) in a tool results in a calmer running of the tool which impacts the surface quality of the processed surface and results in a better serviceable life of the tool.
    Type: Application
    Filed: August 28, 2007
    Publication date: March 20, 2008
    Applicant: Fraisa Holding AG
    Inventors: Josef Maushart, Tiziano Sichi
  • Publication number: 20070122241
    Abstract: A milling tool for roughing workpieces is provided with a plurality of cutting flanks and flutes disposed in between. The cutting flanks are provided on the cutting side with a predetermined rake angle, and the cutting edges have moreover a profile of wave form that extends over the width of the cutting flanks. The profile of wave form is provided with a bevel having a width corresponding to at least the height of the crest, and having a wedge angle that is more obtuse than the wedge angle of the milling tool. When the tool is subjected to heavy operational demands, a chipping or breaking off of the crest edges is thereby prevented, thus increasing the service life of the tool.
    Type: Application
    Filed: October 24, 2006
    Publication date: May 31, 2007
    Applicant: Fraisa Holding AG c/o Fraisa SA
    Inventors: Tiziano Sichi, Josef Maushart