Method of machining gears to produce a sinusoidal-parabolic hybrid motion error, gear thus produced and machine for performing said method
AssigneeThe Gleason Works
InventorHermann J. Stadtfeld
Life of this patent
Estimating the term…
Abstract
A method of machining a tooth flank of a gear with a gear machining tool. The method comprises rotating the tool and bringing the tool and the tooth flank into contact. Relative movements are provided between the tool and the gear to traverse the tool across the tooth flank along a path whereby the path produces a tooth flank geometry of a form which, when brought into mesh with a mating tooth flank under no load or light load to form a tooth pair, provides a motion graph curve comprising a sinusoidal portion (62, 89, 91, 90, 63) and a parabolic portion (92).
Claims4
A method of machining a tooth flank of a gear with a finishing tool, said method comprising:
- rotating said finishing tool and bringing said tool and said tooth flank into contact,
- providing relative movement between said tool and said gear to traverse said tool across said tooth flank along a path,
- whereby said path produces a tooth flank geometry of a form which, when brought into mesh with a mating tooth flank under no load or light load to form a tooth pair, provides a motion graph curve comprising a sinusoidal portion and a parabolic portion.
A method of machining tooth flank surfaces of mating gear members with a first tool for machining the tooth flank surfaces of one mating gear member, and a second tool for machining the tooth flank surfaces of the other mating gear member, said method comprising:
- rotating said first tool and bringing said first tool and the tooth flank of said one mating gear member into contact,
- providing relative movement between said first tool and said one mating gear member to traverse said first tool across the tooth flank along a first path,
- rotating said second tool and bringing said second tool and the tooth flank of said other mating gear member into contact,
- providing relative movement between said second tool and said other mating gear member to traverse said second tool across the tooth flank along a second path,
- whereby said first path and said second path produces respective tooth flank geometries of a form which, when said mating gear members are brought into mesh under no load or light load to form a mating tooth pair, provides a motion graph curve comprising a sinusoidal portion and a parabolic portion.
A gear having a plurality of tooth flank surfaces with at least one tooth flank surface having a tooth flank geometry of a form which, when brought into mesh under no load or light load with a mating tooth flank to form a tooth pair, provides a motion graph curve comprising a sinusoidal portion and a parabolic portion.
A free-form gear manufacturing machine, said machine having a computer control and a plurality of computer-controlled axes with said computer control being operable to control said plurality of computer-controlled axes whereby a tool and a workpiece having at least one tooth flank are movable relative to one another,
- said computer control including a computer program having commands whereby said plurality of axes of said gear manufacturing machine are directed to provide relative movements between the tool and the workpiece to traverse the tool across the tooth flank along a path whereby the path produces a tooth flank geometry of a form which, when brought into mesh with a mating tooth flank under no load or light load to form a tooth pair, provides a motion graph curve comprising a sinusoidal portion and a parabolic portion.
Dependencies are inferred from the claim text.