Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1986-04-22
1987-07-21
Yost, Frank T.
Metal working
Method of mechanical manufacture
Assembling or joining
29465, 76101A, 83 13, 83664, 83675, B23P 1904
Patent
active
046808515
ABSTRACT:
A method of setting up tooling on parallel rotary arbors for cutting plural parallel longitudinal slits in a web of sheet material advancing between the arbors, using a set of tooling comprising multiple circular cutter elements and multiple circular spacer elements, the elements having various nominal axial lengths with a common axial length tolerance of .+-.t. Each element, measured to determine the deviation between its actual and nominal axial length, is detectably identified (e.g. by color coding) with one of plural discrete successive subranges of the overall tolerance range .+-.t, viz., with that subrange in which its measured axial length deviation lines. A first group of the elements for mounting on a given axial portion of an arbor, and a second group of the elements for mounting on a corresponding axial portion of the other arbor in register with the given axial portion, are selected such that the sum of the first-group element nominal axial lengths equals the sum of the second-group element nominal axial lengths plus a predetermined value, and such that the first-group element axial length deviations lie in subranges that cumulatively balance the subranges in which the second-group element axial length deviations lie, for limiting the difference between the sum of the first-group deviations and the sum of the second-group deviations to a predetermined range of values; and the selected groups of elements are mounted on the respective arbors, the selecting and mounting steps being repeated to assemble a complete array of tooling elements.
REFERENCES:
patent: 2613571 (1952-10-01), Herman
patent: 3359842 (1967-12-01), Young
patent: 3613485 (1971-10-01), Kelly et al.
patent: 4195542 (1980-04-01), Zimmer
patent: 4388753 (1983-06-01), Brookes
patent: 4597152 (1986-07-01), Hamisch, Jr.
Alcan Aluminum Corporation
Yost Frank T.
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