Method for manufacturing clutch housing
AssigneeNSK-Warner K.K.
InventorMasayuki Takagi
Life of this patent
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Abstract
A method for manufacturing a clutch housing comprises: a first step of forming a work into a pre-product having a shaft portion and an outer drum portion enclosing the shaft portion integrally with the shaft portion; a second step of subjecting the pre-product to predetermined processing; and a third step of providing a spline on an inner periphery of the outer drum portion by flow forming, and forming the clutch housing into an almost completed product, wherein in the first step, an outer peripheral cylindrical portion of the outer drum portion is formed while being offset in an axial direction with respect to the shaft portion so that it is not opposite to at least part of the shaft portion in a radial direction.
Claims22
A method for manufacturing a clutch housing, comprising:
- a first step of forming a work into a pre-product having a shaft portion and an outer drum portion enclosing the shaft portion integrally with the shaft portion;
- a second step of working the pre-product, including forming a hole in said shaft portion, said hole extending substantially perpendicular to an axial direction of said shaft portion;
- and
- a third step of providing a spline on an inner periphery of the outer drum portion by flow forming, and forming the pre-product into an almost completed product,
- wherein in the first step, an outer peripheral cylindrical portion of the outer drum portion is formed while being offset in an axial direction with respect to the shaft portion so that it is not opposite, in a radial direction, to a region where said hole is to be formed in the second step, and
- wherein in the third step, said outer peripheral cylindrical portion of the outer drum portion is further formed so that a part of said outer peripheral cylindrical portion is radially opposite said region where said hole is formed.
A method for manufacturing a clutch housing, comprising the steps of:
- (a) forming a work into a pre-product having a shaft portion and an outer drum portion integral with the shaft portion, the outer drum portion having an outer peripheral cylindrical portion joined to the shaft portion through a disk portion which is oblique with respect to an axis of the shaft portion such that the outer peripheral cylindrical portion is offset in an axial direction with respect to the shaft portion so that it is not opposite to at least part of the shaft portion in a radial direction;
- (b) working said part of the shaft portion;
- and
- (c) subsequent to step (b), subjecting the pre-product to flow forming so as to form the pre-product into a substantially completed clutch housing having a spline on an inner periphery of the outer peripheral cylindrical portion,
- wherein step (c) includes further forming of said outer peripheral cylindrical portion so that a part of said outer peripheral cylindrical portion is radially opposite said part of the shaft portion.
A method for manufacturing a clutch housing, comprising the steps of:
- (a) forming a work into a pre-product having a shaft portion and an outer drum portion integral with the shaft portion, the outer drum portion having an outer peripheral cylindrical portion joined to the shaft portion through a disk portion which is oblique to an axis of the shaft portion such that the outer peripheral cylindrical portion is offset in an axial direction with respect to the shaft portion so that it is not opposite to at least part of the shaft portion in a radial direction;
- (b) working said part of the shaft portion;
- and
- (c) subsequent to step (b), forming the pre-product into a substantially completed clutch housing having a spline on an inner periphery of the outer peripheral cylindrical portion,
- wherein step (c) includes further forming of said outer peripheral cylindrical portion so that a part of said outer peripheral cylindrical portion is radially opposite said part of the shaft portion.
Dependencies are inferred from the claim text.