US3739461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing clean walled bores in laminates workpieces
Assignee: Individual
•
Filing: 1971-08-03
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Granted: 1973-06-19
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Expires: 1991-08-03
Abstract
Abstract A method of enlarging or reaming a bore in a laminated workpiece which consists of selecting a straight fluted reaming tool whose diameter just exceeds that of the bore to be reamed. The reamer is held against rotation while being axially infed into the bore to, concomitantly, kerf the bore wall with its cutting edges. The reamer is then held against further axial movement and rotated to produce a finished bore which does not exhibit that workpiece smear or migration between adjacent laminae which is characteristic of bores formed in a laminated workpiece by infeeding a rotating tool.
Inventors
- 👤 J Cupler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:13
CPC Classifications
B; B23; B23D; B23D77/00; B23D75/00; H; H05; H05K; H05K3/00; H05K3/0011; H05K3/0055; H05K2203/00; H05K2203/01; H05K2203/0195; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49147; Y10T29/49995; Y10T29/49996; Y10T408/00; Y10T408/03; Y10T83/00; Y10T83/04; Y10T83/0596; Y10T83/384; Y10T83/394
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
56 words
A METHOD OF REAMING A BORE IN A WORKPIECE TO REMOVE MIGRATED MATERIAL FROM THE BORE WALL THEREOF, COMPRISING; SELECTING A REAMING TOOL HAVING A DIAMETER JUST EXCEEDING THE DIAMETER OF SAID BORE; RESTRAINING SAID REAMING TOOL AGAINST ROTATION; INSERTING THE ROTATIONALLY STATIONARY REAMING TOOL IN SAID BORE; AND ROTATING SAID TOOL TO REAM SAID BORE.
Claim 2
Independent Claim
56 words
A METHOD OF REAMING A BORE IN A WORKPIECE TO REMOVE MIGRATED MATERIAL FROM THE BORE WALL THEREOF, COMPRISING; SELECTING A REAMING TOOL HAVING A DIAMETER JUST EXCEEDING THE DIAMETER OF SAID BORE; RESTRAINING SAID REAMING TOOL AGAINST ROTATION; INSERTING THE ROTATIONALLY STATIONARY REAMING TOOL IN SAID BORE; AND ROTATING SAID TOOL TO REAM SAID BORE.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein the step of inserting the reaming tool includes the simultaneous step of kerfing said bore wall.
Claim 4
Dependent Claim
20 words
The method of claim 2 including the step of restraining axial movement of said tool during the rotary reaming operation.
Claim 5
Dependent Claim
48 words
The method of claim 3 wherein said workpiece is a laminated workpiece and said bore extends through the laminated workpiece; and wherein the last named step comprises restraining axial movement of said tool with at least one end of said tool extending beyond one surface of said workpiece.
Claim 6
Dependent Claim
30 words
The method of claim 4 wherein the step of kerfing said bore wall includes the step of forming at least two straight, parallel kerfs throughout the length of said bore.
Claim 7
Independent Claim
98 words
A method of removing migrated material from a substantially cylindrical throughbore in a laminated workpiece, comprising; selecting a straight fluted reaming tool whose diameter just exceeds that of said throughbore; restraining said tool against rotation; infeeding the rotationally stationary tool parallel to the axis of said throughbore with the reamer blades of said tool in kerfing engagement with the bore wall of said throughbore; terminating the infeed of said tool with said reamer blades engaging the workpiece throughout the length of said throughbore; restraining axial movement of said tool; and rotating said tool to remove said migrated material.
Claim 8
Independent Claim
98 words
A method of removing migrated material from a substantially cylindrical throughbore in a laminated workpiece, comprising; selecting a straight fluted reaming tool whose diameter just exceeds that of said throughbore; restraining said tool against rotation; infeeding the rotationally stationary tool parallel to the axis of said throughbore with the reamer blades of said tool in kerfing engagement with the bore wall of said throughbore; terminating the infeed of said tool with said reamer blades engaging the workpiece throughout the length of said throughbore; restraining axial movement of said tool; and rotating said tool to remove said migrated material.
Claim 9
Independent Claim
142 words
a method of forming a finished bore in a workpiece characterized by the absence of migrated material throughout the bore wall surface thereof, comprising; forming a first undersize bore in a workpiece and simultaneously migrating workpiece material along the bore wall thereof; infeeding a rotationally stationary cutting tool parallel to the axis of said undersize bore and simultaneously forming at least one kerf in the workpiece intersecting and extending radially outward of said bore wall and into said migrated material; terminating the infeed of said tool with the cutting edge means thereof in engagement with said at least one kerf throughout the total length thereof; and rotating said cutting Tool about said axis to remove said migrated material and enlarge said bore to a finished radius substantially equal to the distance between the radially outermost extent of said kerf and said axis.
Claim 10
Independent Claim
142 words
a method of forming a finished bore in a workpiece characterized by the absence of migrated material throughout the bore wall surface thereof, comprising; forming a first undersize bore in a workpiece and simultaneously migrating workpiece material along the bore wall thereof; infeeding a rotationally stationary cutting tool parallel to the axis of said undersize bore and simultaneously forming at least one kerf in the workpiece intersecting and extending radially outward of said bore wall and into said migrated material; terminating the infeed of said tool with the cutting edge means thereof in engagement with said at least one kerf throughout the total length thereof; and rotating said cutting Tool about said axis to remove said migrated material and enlarge said bore to a finished radius substantially equal to the distance between the radially outermost extent of said kerf and said axis.
Claim 11
Dependent Claim
30 words
The method of claim 7 wherein said workpiece is a laminated workpiece; and the formation of said at least one kerf comprises the formation of a plurality of straight kerfs.
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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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |