US3681834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for fabricating workholders
Assignee: Vereinigte Flugtechnische Werke Fokker GmbH
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Filing: 1970-01-26
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Granted: 1972-08-08
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Expires: 1990-01-26
Abstract
Abstract A method and apparatus for fabricating a holder for a workpiece from modular holding units. The number and location of the modular units is first determined by placing templates representing the modules onto a locating hole system layout having a uniform rectangular grid on its surface. The grid represents a uniform rectangular grid of holes in a plate to be attached to a machine tool. Once the exact number, configuration, and location of the modules needed to fabricate a work holder for particular workpiece has been determined, the actual modules represented by the templets are fastened onto the plate having the rectangular grid of holes in the same location as the templets on the layout. The modules may take many shapes; and both tensioning and clamping work holders can be fabricated.
Inventors
- 👤 Heinz Seidenfaden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:16
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/02; B23Q3/10; B23Q3/103; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49764; Y10T29/49778; Y10T29/4978
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
186 words
An apparatus for fabricating a holder for a workpiece comprising in combination: a. layout means having a plurality of indicating means thereon forming a uniform rectangular grid representing a plurality of holes, said layout means having a predetermined size; b. locating plate means having a plurality of bores therein forming a uniform rectangular grid which corresponds with the grid formed on said layout means, said plate means having a predetermined size; c. at least one templet means having a size substantially less than the predetermined size of said layout means and a plurality of bores therein dimensioned relative to each other to correspond with the dimensioning of the indicating means forming the uniform rectangular grid on said layout means, so that said templet means can be located at a plurality of positions on said layout means; and d. at least one holding module means corresponding to said at least one templet means so that said module means can be located on said locating plate means in the bores corresponding to those represented on the rectangular grid of said layout means where said templet means is located.
Claim 2
Independent Claim
186 words
An apparatus for fabricating a holder for a workpiece comprising in combination: a. layout means having a plurality of indicating means thereon forming a uniform rectangular grid representing a plurality of holes, said layout means having a predetermined size; b. locating plate means having a plurality of bores therein forming a uniform rectangular grid which corresponds with the grid formed on said layout means, said plate means having a predetermined size; c. at least one templet means having a size substantially less than the predetermined size of said layout means and a plurality of bores therein dimensioned relative to each other to correspond with the dimensioning of the indicating means forming the uniform rectangular grid on said layout means, so that said templet means can be located at a plurality of positions on said layout means; and d. at least one holding module means corresponding to said at least one templet means so that said module means can be located on said locating plate means in the bores corresponding to those represented on the rectangular grid of said layout means where said templet means is located.
Claim 3
Dependent Claim
104 words
An apparatus as defined in claim 1 wherein said module means has a size substantially less than the predetermined size of said plate means and includes a base plate defining a plurality of bores therein dimensioned relative to each other to correspond with the dimensioning of the bores forming the uniform rectangular grid on said locating plate means, so that said module means can be located at a plurality of positions on said plate means and a removable receiving stud means mounted on said base plate, and wherein said templet means has such a configuration that it represents said base plate and said stud.
Claim 4
Dependent Claim
71 words
An apparatus as defined in claim 2 wherein said at least one templet means defines an offset longitudinal slot, and further including an intermediate plate having at least one guide ledge and said removeable receiving stud means mounted on said intermediate plate at a location offset from one center line of said intermediate plate, said templet means which defines a longitudinal slot representing said module means with an offset receiving stud.
Claim 5
Dependent Claim
64 words
An apparatus as defined in claim 2 wherein said removably mounted receiving stud means is on said base plate for movement with respect thereto in two directions perpendicular to each other, and wherein said templet means defines an opening of rectangular configuration offset from one center line of said templet means so as to represent the two directions of movement of said stud means.
Claim 6
Dependent Claim
30 words
An apparatus as defined in claim 2, further including at least one intermediate sleeve arranged over said stud means and means fastened to said stud means to engage the workpiece.
Claim 7
Dependent Claim
52 words
An apparatus as defined in claim 2, further including bridge means including a height-adjustable support means attached at one end thereof, and wherein said stud means is pivotably mounted in the center of said base and defines a radial opening which engages said bridge means at a predetermined point along its length.
Claim 8
Dependent Claim
32 words
An apparatus as defined in claim 2 wherein said templet means has a plurality of triangular shaped sections so that it may be used to represent more than one different module means.
Claim 9
Dependent Claim
21 words
An apparatus as defined in claim 2 further including screw fastener means attaching said base plate to said locating plate means.
Claim 10
Dependent Claim
27 words
An apparatus as defined in claim 2, wherein at least one of said locating plate means and said at least one module means includes vacuum holding means.
Claim 11
Dependent Claim
61 words
An apparatus as defined In claim 1, wherein said plate means defines a plurality of bores spaced intermediate the bores of the uniform rectangular grid, wherein said at least one holding module means defines bores therein corresponding to said intermediate bores, and wherein said at least one templet means and said layout means have indications thereon corresponding to said intermediate bores.
Claim 12
Dependent Claim
20 words
An apparatus as defined in claim 1, wherein said locating plate means is an integral member of a machine tool.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |