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US 6,308,397 B1Granted
Method for manufacturing friction plate
AssigneeNSK-Warner K.K.
InventorsShigeharu Nishimura, Nobuhiro Horiuchi
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AssigneeNSK-Warner K.K.
InventorsShigeharu Nishimura, Nobuhiro Horiuchi
Estimating the term…
The present invention provides a method for manufacturing friction plates obtained by adhering friction members to substantially annular core plates, comprising the steps of simultaneously stamping a plurality of coaxial core plates having different diameters with a joint portion remaining therebetween, preliminarily adhering friction member segments to the stamped plural core plates, and stamping the joint portion during or after a main adhering step following the preliminarily adhering step.
A method for manufacturing friction plates obtained by adhering friction members to substantially annular core plates, comprising:
A method for manufacturing friction plates obtained by adhering friction members to substantially annular core plates, comprising:
Dependencies are inferred from the claim text.
No related US applications are recorded in the indexed filing history.
Punching blanks or articles with or without obtaining scrap ; Notching: incompletely punching in such a manner that the parts are still coherent…
Making other particular articles: other parts for vehicles, e.g. cowlings, mudguards
Method of mechanical manufacture: obtaining plural product pieces from unitary workpiece
Assembling or joining: metal deforming with nonmetallic bonding
Term ended 14 Jun 2019 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
The present invention relates to a method for manufacturing a friction plate used for an automatic transmission and/or a lock-up clutch of a vehicle.
2. Related Background Art
FIG. 1 is a plan view showing a flow of manufacturing processes in a first embodiment of the present invention;
FIG. 2 is a plan view showing a flow of manufacturing processes in a second embodiment of the present invention;
FIG. 3 is a plan view showing a flow of manufacturing processes in a third embodiment of the present invention; and
The present invention will now be fully explained in connection with embodiments thereof with reference to the accompanying drawings. Incidentally, in the drawings, same elements are designated by the same reference numerals.
(First Embodiment) FIG. 1 is a plan view showing a flow of manufacturing processes in a first embodiment of the present invention.
FIG. 1 shows one example of a flow of processes or steps when two large and small friction plates having different diameters are manufactured. First of all, in a step (A), a substantially annular large-diametered core plate 1 having an inner spline 1a to be engaged by a rotary member (not shown) and a substantially annular small core plate 2 having an inner spline 2a to be engaged by a rotary member (not shown) and having an outer diameter smaller than an inner diameter of the large core plate 1 are formed by simultaneously stamping them from a steel plate having a predetermined thickness by means of the press (not shown). After stamping, a substantially annular gap is defined between the large core plate 1 and the small core plate 2.