US3598007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shearing method
Assignee: Cincinnati Shaper Co
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Filing: 1968-03-14
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Granted: 1971-08-10
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Expires: 1988-03-14
Abstract
Abstract A method of shearing a stated quantity of each of a number of different sized parts from sheet stock wherein the orientation of stock feed alternates in a predetermined pattern, and wherein the parts to be produced are laid out on the stock so that the first two cuts yield a parts blank and at least one cutoff. The parts blank is then sheared into parts, and the cutoff is sheared in two cuts into a second parts blank and the sequence repeated until the starting sheet is consumed.
Inventors
- 👤 Ronald S Williams
- 👤 John J Erhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:05
CPC Classifications
B; B23; B23D; B23D33/00; B23D33/006; B23D15/00; B23D15/06; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0505; Y10T83/051; Y10T83/0524; Y10T83/0538
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
172 words
A method of shearing from stock a plurality of different sized parts in an array of parts according to magnitude of area comprising the steps of: a. shearing said sheet by length and width to produce a part blank of a length and width equal to at least one multiple of the length and width of substantially the largest part in said array of parts and producing a length cutoff and a width cutoff; b. shearing said part blank to produce at least one multiple of said substantially largest part; c. selecting by computer means from the smaller parts in the array of parts, the part which can be sheared from the length cutoff with substantially least scrap and shearing the length cutoff to produce at least one multiple of the selected part; d. selecting by computer means from the smaller parts in the array of parts, the part which can be sheared from the width cutoff with substantially the least scrap and shearing at least one multiple of the selected part.
Claim 2
Independent Claim
172 words
A method of shearing from stock a plurality of different sized parts in an array of parts according to magnitude of area comprising the steps of: a. shearing said sheet by length and width to produce a part blank of a length and width equal to at least one multiple of the length and width of substantially the largest part in said array of parts and producing a length cutoff and a width cutoff; b. shearing said part blank to produce at least one multiple of said substantially largest part; c. selecting by computer means from the smaller parts in the array of parts, the part which can be sheared from the length cutoff with substantially least scrap and shearing the length cutoff to produce at least one multiple of the selected part; d. selecting by computer means from the smaller parts in the array of parts, the part which can be sheared from the width cutoff with substantially the least scrap and shearing at least one multiple of the selected part.
Claim 3
Dependent Claim
130 words
The method of claim 1 including the additional step of selecting a second sheet of stock, shearing as many as possible of the said substantially largest of said parts to be cut, said shearing step producing a length cutoff and a width cutoff, selecting by computer means from the smaller of the parts to be cut the part which can be sheared from the length cutoff with substantially the least scrap and shearing the length cutoff to produce aT least one multiple of the selected part, and selecting by computer means from the smaller of said parts to be cut, the part which can be sheared from the width cutoff with substantially the least scrap and shearing the width cutoff to produce at least one multiple of the selected part.
Claim 4
Independent Claim
135 words
A method of shearing an elongated sheet of stock to produce a plurality of different sized parts comprising the steps of: a. shearing said sheet lengthwise to produce a portion with a width equal to at least one multiple of a part width, and a first cutoff; b. then shearing said portion by width to produce a part blank with a length equal to at least one multiple of said part length and a second cutoff; c. shearing said part blank by length and then by width to produce said part; d. thereafter shearing said first cutoff by length and then by width to produce a second part blank for a second part; and e. shearing said second cutoff by length and then by width to produce a third part blank for a third part.
Claim 5
Independent Claim
135 words
A method of shearing an elongated sheet of stock to produce a plurality of different sized parts comprising the steps of: a. shearing said sheet lengthwise to produce a portion with a width equal to at least one multiple of a part width, and a first cutoff; b. then shearing said portion by width to produce a part blank with a length equal to at least one multiple of said part length and a second cutoff; c. shearing said part blank by length and then by width to produce said part; d. thereafter shearing said first cutoff by length and then by width to produce a second part blank for a second part; and e. shearing said second cutoff by length and then by width to produce a third part blank for a third part.
Claim 6
Independent Claim
152 words
A method of shearing an elongated sheet of stock to produce a plurality of different sized parts comprising the steps of: a. shearing said sheet lengthwise to produce a portion with a width equal to at least one multiple of a part width, and a first cutoff; b. then shearing said portion by width to produce a part blank with a length equal to at least one multiple of said part length and a second cutoff; c. shearing said part blank by length and then by width to produce said part; d. thereafter shearing said first cutoff by length and then by width to produce a second part blank for a second part; e. shearing said second part blank by length and then by width to produce said second part; and f. shearing said second cutoff by length and then by width to produce a third part blank for a third part.
Claim 7
Independent Claim
152 words
A method of shearing an elongated sheet of stock to produce a plurality of different sized parts comprising the steps of: a. shearing said sheet lengthwise to produce a portion with a width equal to at least one multiple of a part width, and a first cutoff; b. then shearing said portion by width to produce a part blank with a length equal to at least one multiple of said part length and a second cutoff; c. shearing said part blank by length and then by width to produce said part; d. thereafter shearing said first cutoff by length and then by width to produce a second part blank for a second part; e. shearing said second part blank by length and then by width to produce said second part; and f. shearing said second cutoff by length and then by width to produce a third part blank for a third part.
Claim 8
Independent Claim
174 words
A method of shearing a plurality of different sized parts from sheet stock comprising the steps of: a. selecting the substantially largest part to be cut and shearing said sheet stock by length and then by width to produce a parts blank having a length and a width equal respectively to at least one multiple of said part length and width, and a first and second cutoff; b. selecting a substantially smaller part to be cut which can be sheared from said first cutoff with substantially the optimum utilization of said first cutoff and the least scrap; c. shearing said first cutoff by length and then by width to produce a second parts blank having a length and a width equal respectively to at least one multiple of said smaller part length and width; and d. providing visual display means for indicating to an operator the orientation of stock feed for each said shearing cut including the provision of two indicators each adapted to display sheared dimensions, and displaying only one of said indicators.
Claim 9
Independent Claim
174 words
A method of shearing a plurality of different sized parts from sheet stock comprising the steps of: a. selecting the substantially largest part to be cut and shearing said sheet stock by length and then by width to produce a parts blank having a length and a width equal respectively to at least one multiple of said part length and width, and a first and second cutoff; b. selecting a substantially smaller part to be cut which can be sheared from said first cutoff with substantially the optimum utilization of said first cutoff and the least scrap; c. shearing said first cutoff by length and then by width to produce a second parts blank having a length and a width equal respectively to at least one multiple of said smaller part length and width; and d. providing visual display means for indicating to an operator the orientation of stock feed for each said shearing cut including the provision of two indicators each adapted to display sheared dimensions, and displaying only one of said indicators.
Claim 10
Dependent Claim
46 words
The method claimed in claim 5 including the step of shearing said first mentioned parts blank by length and then by width to produce at least one of said largest part to be cut prior to said step of selecting the smaller part to be cut.
Claim 11
Dependent Claim
33 words
The method claimed in claim 5 including the step of shearing said second parts blank by length and then by width to produce at least one of a smaller part to be cut.
Claim 12
Dependent Claim
132 words
In a manufacturing process wherein a plurality of different sized parts each having a specified quantity requirement are sheared from stock, the improved method of minimizing scrap comprising the steps of: a. arranging said parts to be cut into substantially consecutive order as to area; b. selecting a first sheet of said stock; c. shearing a parts blank of a size to include at least two of the substantially largest of said parts to be cut from said first sheet of stock, said shearing step producing at least a first cutoff; d. selecting the smaller uncut part which in any portion of quantity required can be cut from said first cutoff with the least unused stock; and e. shearing as mAny of said smaller parts as possible from said first cutoff. cutoff.
Claim 13
Dependent Claim
132 words
In a manufacturing process wherein a plurality of different sized parts each having a specified quantity requirement are sheared from stock, the improved method of minimizing scrap comprising the steps of: a. arranging said parts to be cut into substantially consecutive order as to area; b. selecting a first sheet of said stock; c. shearing a parts blank of a size to include at least two of the substantially largest of said parts to be cut from said first sheet of stock, said shearing step producing at least a first cutoff; d. selecting the smaller uncut part which in any portion of quantity required can be cut from said first cutoff with the least unused stock; and e. shearing as mAny of said smaller parts as possible from said first cutoff. cutoff.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |