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Publication numberUS2776008 A
Publication typeGrant
Publication dateJan 1, 1957
Filing dateMar 8, 1952
Priority dateMar 8, 1952
Publication numberUS 2776008 A, US 2776008A, US-A-2776008, US2776008 A, US2776008A
InventorsSoderman George W
Original AssigneeWestern Electric Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Punch and die
US 2776008 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

Jan. 1, 1957 G. w. SODERMAN ,77 0

PUNCH AND DIE Filed March 8, 1952 INVENTOP G. W. SODERMA/V United States Patent PUNCH AND DIE George W. Soderman, West Englewood, N. J., assignor to Western Electric Company, Incorporated, New York, N. Y., a corporation of New York Application March 8, 1952, Serial No. 275,477

1 Claim. (Cl. 164118) This invention relates to tools, particularly inexpensive punch press tools.

Punch press tools such as punch and die sets when made in the usual ways, are costly to manufacture and maintain. Such tools have a long useful life, however, and when they are used to make a very large number of parts the tool cost per unit part is not excessive. On the other hand, when only a limited number of parts is required the tool cost is a large factor in the total cost of the part and in such cases inexpensive tools are highly desirable.

The object of the present invention is a punch and die set which is simple in structure and which may be produced inexpensively.

With this and other objects in view, the invention comprises an inexpensive punch and die in which a series of plates of like contours are bored simultaneously to produce in one a die cavity, in another a punch receiving aperture and in a third an aperture for passing the punch so that it may serve as a stripper plate. When desired, a plurality of sets of such apertures may be formed in the plates to enable the tool to make multiple perforations in the work in one operation. Since the punch holder, stripper and die plates are bored while clamped together, alignment of each punch with the corresponding stripper aperture and die cavity is assured merely by mounting the several plates in proper position between the base and ram of a press. A resilient member, formed of suitable material of a given thickness and provided with an aperture for each punch and other cutout portions to allow compression of the member, is disposed between the punch and stripper plates and cemented thereto to form a unitary punch assembly which is cemented to the under surface of the ram. The die plate is cemented to the bed of the press while the punch assembly and the die plate are closed under pressure of the ram.

Other objects and advantages will be apparent from the following detailed description when considered in conjunction with the accompanying drawing which is a front elevational view of the punch and die mounted in a punch press.

The species of the invention shown in the drawing, includes punches 50, 51 and 52 out of given lengths from stocks of predetermined cross-sectional contours. A punch plate 53, a stripper plate 54 and a die plate 55 are cut from metal strip stock of like or different thicknesses. These plates are clamped together and apertures bored therein for the punches 51 and 52. After the boring operation, the plates 54 and 55 are clamped together and apertures bored therein for the punch 50. A resilient member 56 is formed of the proper size and contour and 2,776,008 Patented Jan. 1, 1957 provided with apertures for the punches. Another resilient member 57 is formed to be received in and fill the die cavity for the punch 50. The various parts 50 to 57 inclusive, are provided with suitable cement on the proper surfaces thereof and assembled on the bed 58 of a press after which the tool holder 59 thereof is moved into closed position under pressure and held in this position until the cement on the parts has hardened.

The punch and die structure is sufficiently serviceable for many operations yet inexpensive to manufacture so that the cost of the products may be low. Furthermore, complicated mounting means and stripping mechanisms are eliminated together with costly castings, forgings or the like, requiring hardening processes, complicated machine operations and costly maintenance.

It is to be understood that the above described arrangements are simply illustrative of the application of the principles of the invention. Numerous other arrangements may be readily devised by those skilled in the art which will embody the principles of the invention and fall within the spirit and scope thereof.

What is claimed is:

The combination with a press having a bed and a reciprocable tool holder, of a punch and die comprising punches cut from rod stocks of given uniform cross-sectional contours, plates cut from metal plate stock, identified as a die plate, a punch plate and a stripper plate, having an aligned set of apertures in all the plates for one of the punches and an aligned set of apertures in the stripper plate and the die plate only for another punch, means to removably cement the punch plate and the upper end of the punch in the aperture thereof to the tool holder of the press, means to removably cement the other punch to the punch plate in alignment with its respective apertures in the stripper plate and the die plate, a pad of resilient material of substantially the contour of the plates, perforated for the punches, disposed between and removably cemented to the punch plate and the stripper plate thereby to be supported by the punch plate and to support the stripper plate, means to removably cement the die plate to the bed of the press, and a pad of resilient material substantially of a size and contour to fill one of the die cavities removably cemented to the bed of the press and compressible by the aligned punch.

References Cited in the file of this patent UNITED STATES PATENTS 173,062 Robertson et a1 Feb. 1, 1876 414,288 Carpenter Nov. 5, 1889 418,534 Shipley Dec. 31, 1889 828,226 Lorenz Aug. 7, 1906 1,288,054 Lane Dec. 17, 1918 1,402,284 Daniels Jan. 3, 1922 1,533,681 Witkus Apr. 4, 1925 1,602,687 Leschhorn Oct. 12, 1926 1,960,881 Sunbury May 29, 1934 2,230,043 Moran Jan. 28, 1941 2,278,288 Sadler Mar. 31, 1942 2,324,143 Erdrnan July 13, 1943 2,379,003 Hedberg June 26, 1945 2,388,528 Curtiss Nov. 6, 1945 FOREIGN PATENTS 488,552 Great Britain July 8, 1938

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US173062 *Feb 1, 1876 William
US414288 *Jan 2, 1888Nov 5, 1889 Machine for the manufacture of secondary-battery plates
US418534 *Oct 22, 1889Dec 31, 1889George wDie for the manufacture of metallic fasteners
US828226 *Jan 8, 1906Aug 7, 1906Peter A LorenzMethod of producing bucket-blanks.
US1288054 *Aug 9, 1918Dec 17, 1918Virginia Shipbuilding CorporatedAdjustable die-holder.
US1402284 *May 29, 1918Jan 3, 1922Daniels George HSectional die
US1533681 *Jan 12, 1923Apr 14, 1925Frank F WitkusTip-perforating machine
US1602687 *Mar 30, 1923Oct 12, 1926Latham Machinery CoDie strip and bed for sheet-perforating machines
US1960881 *Dec 14, 1932May 29, 1934Allbestos CorpLining plugging machine
US2230043 *Apr 22, 1940Jan 28, 1941Ready Machine Tool & Die Co InPunch stripper
US2278288 *Apr 4, 1941Mar 31, 1942Duplex Envelope Company IncGang punch
US2324143 *Jan 28, 1943Jul 13, 1943Nat Screw & Mfg CompanyMethod of making thread rolling dies
US2379003 *Jun 14, 1944Jun 26, 1945Kermit W PetersonDie
US2388528 *Apr 7, 1944Nov 6, 1945Curtiss Jr John SDie and method of making same
GB488552A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3064511 *Jun 26, 1957Nov 20, 1962Allander Claes VilhelmMethod for rapid mounting of tool sets
US3263539 *May 13, 1964Aug 2, 1966Rubber And Plastics Res Ass OfSingularly mounted cutters operative to form blanks
US4663815 *Oct 1, 1985May 12, 1987Associated Enterprises, Inc.A method and apparatus for surface mount compatible connector system with mechanical integrity
US4872846 *Jul 21, 1988Oct 10, 1989Clark Thomas CSolder containing electrical connector and method for making same
US4884335 *Jun 29, 1988Dec 5, 1989Minnesota Mining And Manufacturing CompanySurface mount compatible connector system with solder strip and mounting connector to PCB
US4984359 *May 19, 1989Jan 15, 1991Amp IncorporatedMethod of making a solder containing electrical connector
WO1986007663A1 *Jun 16, 1986Dec 31, 1986Associated Enterprises, Inc.Surface mount compatible connector system with mechanical integrity
Classifications
U.S. Classification83/133, 83/620, 83/138
International ClassificationB21D37/00, B21D37/10
Cooperative ClassificationB21D37/10
European ClassificationB21D37/10