US3440988A - Dimpled press stock - Google Patents
Dimpled press stock Download PDFInfo
- Publication number
- US3440988A US3440988A US623055A US3440988DA US3440988A US 3440988 A US3440988 A US 3440988A US 623055 A US623055 A US 623055A US 3440988D A US3440988D A US 3440988DA US 3440988 A US3440988 A US 3440988A
- Authority
- US
- United States
- Prior art keywords
- metal
- dimples
- stamping
- dimpled
- sheet metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 13
- 238000000926 separation method Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
Definitions
- Sheet metal objects are routinely manufactured by stamping in suitable dies. Such a stamping procedure often involves the preparation and stacking of identical sheets of metal as blanks or the stacking of essentially duplicate parts during some portion of the manufacturing procedure.
- stamping processes of this nature usually start with the preparation of sheet metal blanks from a metal reservoir normally a coil of sheet metal. Immediately after the blanks have been severed in sequence from the coil, each individual blank should be worked to impart to it at least one local and non-structural deformation. The non-structural deformations in these sheet metal blanks should be located so that it is impossible for such a sheet metal blank to nest with either the sheet metal blank immediately preceding or immediately following such blank.
- This invention is easily visualized by a study of the drawing which depicts a pair of stampings which are intended to serve as a portion of an automotive gasoline tank. These two stampings are identical except for the location of the non-structural deformations or dimples. Note that dimples A and B in the lower stamping are located differently from dimples C and D in the upper stamping. It is obvious that these two stampings may be partially but not completely nested and that when so partially nested they may readily be separated for further processing. This separation may be done either manually or by machine.
- dimples or non-structural deformations may be added to the stamping at any convenient point in the process.
- this dimpling may be done as a portion of the process for the preparation of the blanks or may be done as a part of the stamping or drawing process by which the stampings are fabricated.
- non-structural deformations or dimples must be located so that they do not interfere with the utility of the final product or where they may be trimmed away from the final product.
- stampings from flat sheet metal comprising preparing in sequence a plurality of fiat sheets of metal of suitable size to be deformed into a stamping, and locally imparting a non-structural deformation to different locations in each of the sheets of metal so produced, these non-structural deformations being located in each individual sheet so that it cannot nest tightly with either the immediately preceding or the immediately following sheet.
- stampings from flat sheet metal comprising preparing in sequence a plurality of flat sheets of metal of suitable size to be deformed into a stamping, and locally imparting a non-structural deformation to different locations in each of the sheets of metal so produced, these non-structural deformations being arranged in each individual sheet so that it cannot nest tightly with either the immediately preceding or the immediately following sheet.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Stackable Containers (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Punching Or Piercing (AREA)
Description
A ril 29, 1969 J. A. BREMER DIMPLED PRESS STOCK Filed March 14, 1967 JAMES A. BREMER INVENTOR.
ATTORNEYS United States Patent 015cc 3,440,988 Patented Apr. 29, 1969 U.S. Cl. 113-120 4 Claims ABSTRACT OF THE DISCLOSURE This invention teaches the incorporation of non-nesting deformations into a normally nesting sheet metal object to enable such objects to be stacked and unstacked with ease manually or dependably by automatic machinery.
Background of the invention Sheet metal objects are routinely manufactured by stamping in suitable dies. Such a stamping procedure often involves the preparation and stacking of identical sheets of metal as blanks or the stacking of essentially duplicate parts during some portion of the manufacturing procedure.
Difficulty has been encountered in the past from the tendency of stacked sheet metal blanks or stacked and nested stamped parts to tenaciously cling together and resist separation for subsequent processing particularly if the parts are prepared from oiled stock. This difficulty has resulted in the necessity for the use of more man power in the attendant sheet separation or in rendering automatic machinery for such stamping processes more expensive and more unreliable than with the current process.
Description of the invention The difficulties outlined above may be avoided by properly deforming the sheet metal blanks at any suitable step in the manufacturing process. Stamping processes of this nature usually start with the preparation of sheet metal blanks from a metal reservoir normally a coil of sheet metal. Immediately after the blanks have been severed in sequence from the coil, each individual blank should be worked to impart to it at least one local and non-structural deformation. The non-structural deformations in these sheet metal blanks should be located so that it is impossible for such a sheet metal blank to nest with either the sheet metal blank immediately preceding or immediately following such blank.
This invention is easily visualized by a study of the drawing which depicts a pair of stampings which are intended to serve as a portion of an automotive gasoline tank. These two stampings are identical except for the location of the non-structural deformations or dimples. Note that dimples A and B in the lower stamping are located differently from dimples C and D in the upper stamping. It is obvious that these two stampings may be partially but not completely nested and that when so partially nested they may readily be separated for further processing. This separation may be done either manually or by machine.
It is clear that the dimples or non-structural deformations may be added to the stamping at any convenient point in the process. For example, this dimpling may be done as a portion of the process for the preparation of the blanks or may be done as a part of the stamping or drawing process by which the stampings are fabricated.
It is clear that the non-structural deformations or dimples must be located so that they do not interfere with the utility of the final product or where they may be trimmed away from the final product.
An obvious variation of the process shown above is to modify the structure shown in the drawing so that dimples A and B are coincident with dimples C and D but of different outline so that nesting is again impossible. This structure is shown in the dotted dimples in the upper portion of the drawing with the outline of the dimples D and C modified so that nesting with dimples A and B is impossible even though the two sets of dimples are in the same location.
I claim as my invention:
1. The process of producing stampings from flat sheet metal comprising preparing in sequence a plurality of fiat sheets of metal of suitable size to be deformed into a stamping, and locally imparting a non-structural deformation to different locations in each of the sheets of metal so produced, these non-structural deformations being located in each individual sheet so that it cannot nest tightly with either the immediately preceding or the immediately following sheet.
2. The process recited in claim 1 in which the nonstructural deformations are imparted to the sheets of metal as an adjunct to the preparation of the sheets of metal from a metal reservoir.
3. The process recited in claim 1 in which the nonstructural deformations are imparted to the sheets of metal as a portion of the stamping process.
4. The process of producing stampings from flat sheet metal comprising preparing in sequence a plurality of flat sheets of metal of suitable size to be deformed into a stamping, and locally imparting a non-structural deformation to different locations in each of the sheets of metal so produced, these non-structural deformations being arranged in each individual sheet so that it cannot nest tightly with either the immediately preceding or the immediately following sheet.
References Cited FOREIGN PATENTS 212,767 1/ 1961 Austria. 604,593 9/ 1960 Canada.
RONALD D. GREFE, Primary Examiner.
U.S. Cl. X.R. 22097
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62305567A | 1967-03-14 | 1967-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3440988A true US3440988A (en) | 1969-04-29 |
Family
ID=24496584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US623055A Expired - Lifetime US3440988A (en) | 1967-03-14 | 1967-03-14 | Dimpled press stock |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3440988A (en) |
| DE (1) | DE1988210U (en) |
| GB (1) | GB1176603A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3721364A (en) * | 1970-11-17 | 1973-03-20 | Wolfen Filmfab Veb | Plastic magazine for photosensitive sheet materials |
| US4273241A (en) * | 1979-07-05 | 1981-06-16 | General Electric Company | Reflector unit for photoflash array |
| US4756420A (en) * | 1987-03-19 | 1988-07-12 | Buckhorn, Inc. | Multi size nesting containers with anti jamming |
| DE9210320U1 (en) * | 1992-08-01 | 1992-11-05 | GPA Gesellschaft für Prozeßautomation mbH, 4600 Dortmund | Transport device |
| US5406823A (en) * | 1991-01-18 | 1995-04-18 | Nam Lee Industries (Pte) Ltd. | Method of producing a main frame for a shipping container |
| US5417151A (en) * | 1992-03-26 | 1995-05-23 | Kirklees Developments Limited | Barbecue and method of manufacturing the same |
| US6006577A (en) * | 1996-01-11 | 1999-12-28 | Daimlerchrysler Ag | Stackable drawn pieces and process and apparatus for manufacture thereof |
| US20040182126A1 (en) * | 2003-03-19 | 2004-09-23 | Richard Smith | Metal unit nesting machine |
| US9623470B1 (en) | 2016-05-12 | 2017-04-18 | Delaco Steel Corp. | Metal processing apparatus and method for forming off-set dimples in metal sheets |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA604593A (en) * | 1960-09-06 | J. B. Orwin Olaf | Trays, pans and other open mouthed containers | |
| AT212767B (en) * | 1959-01-22 | 1961-01-10 | Zeljko Hohnjec | Transport box |
-
1967
- 1967-03-14 US US623055A patent/US3440988A/en not_active Expired - Lifetime
-
1968
- 1968-02-13 DE DEF33911U patent/DE1988210U/en not_active Expired
- 1968-02-26 GB GB9125/68A patent/GB1176603A/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA604593A (en) * | 1960-09-06 | J. B. Orwin Olaf | Trays, pans and other open mouthed containers | |
| AT212767B (en) * | 1959-01-22 | 1961-01-10 | Zeljko Hohnjec | Transport box |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3721364A (en) * | 1970-11-17 | 1973-03-20 | Wolfen Filmfab Veb | Plastic magazine for photosensitive sheet materials |
| US4273241A (en) * | 1979-07-05 | 1981-06-16 | General Electric Company | Reflector unit for photoflash array |
| US4756420A (en) * | 1987-03-19 | 1988-07-12 | Buckhorn, Inc. | Multi size nesting containers with anti jamming |
| US5406823A (en) * | 1991-01-18 | 1995-04-18 | Nam Lee Industries (Pte) Ltd. | Method of producing a main frame for a shipping container |
| US5417151A (en) * | 1992-03-26 | 1995-05-23 | Kirklees Developments Limited | Barbecue and method of manufacturing the same |
| DE9210320U1 (en) * | 1992-08-01 | 1992-11-05 | GPA Gesellschaft für Prozeßautomation mbH, 4600 Dortmund | Transport device |
| US6006577A (en) * | 1996-01-11 | 1999-12-28 | Daimlerchrysler Ag | Stackable drawn pieces and process and apparatus for manufacture thereof |
| US20040182126A1 (en) * | 2003-03-19 | 2004-09-23 | Richard Smith | Metal unit nesting machine |
| WO2004085106A3 (en) * | 2003-03-19 | 2005-02-17 | Kapok Res & Dev Inc | Metal unit nesting machine |
| US7243523B2 (en) * | 2003-03-19 | 2007-07-17 | Richard Smith | Metal unit nesting machine |
| US9623470B1 (en) | 2016-05-12 | 2017-04-18 | Delaco Steel Corp. | Metal processing apparatus and method for forming off-set dimples in metal sheets |
| US9884358B2 (en) | 2016-05-12 | 2018-02-06 | Delaco Steel Corp | Method for forming off-set dimples in metal sheets |
| US10369611B2 (en) | 2016-05-12 | 2019-08-06 | Delaco Steel Corp. | Metal processing apparatus and method for forming off-set dimples in metal sheets |
| US11292043B2 (en) | 2016-05-12 | 2022-04-05 | Delaco Steel Corp. | Metal processing apparatus and method for forming off-set dimples in metal sheets |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1988210U (en) | 1968-06-27 |
| GB1176603A (en) | 1970-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2401305C3 (en) | Process for the production of cylindrical tin cans or the like | |
| US3440988A (en) | Dimpled press stock | |
| EP2785477B1 (en) | Device and method for machining a workpiece consisting of metal, particularly for producing a cup-shaped component for the automobile industry | |
| WO2014170173A1 (en) | Method for producing highly dimensionally stable half shells and device for producing a half shell | |
| US3263637A (en) | Method of deep drawing rectangular shapes | |
| GB1419255A (en) | Method of and apparatus for forming and stress-relieving sheet- metal blanks | |
| DE102016116758A1 (en) | Method and device for producing shaped, in particular flange-shaped, sheet-metal components | |
| US2603987A (en) | Apparatus for making cartridge casing blanks or the like | |
| US1558419A (en) | Process and apparatus for the formation of metal stampings | |
| US2282851A (en) | Clinch nut | |
| US3693568A (en) | Method of forming heat exchanger fin collars | |
| EP0379649B1 (en) | Method for manufacturing rim holes in sheet metal blanks | |
| Hecker et al. | The Forming of Sheet Metal | |
| CN106345877A (en) | Sheet metal part convex hull making process and special mold | |
| US1960000A (en) | Method of drawing metal | |
| US4057022A (en) | Vessel having a pattern-molded bottom, a manufacturing process therefor | |
| US1940305A (en) | Method of making rear axle housings | |
| JPS5966939A (en) | Press forming method for cup-shaped objects with flanges | |
| US3654795A (en) | Process for producing cup-shaped objects having axially extending lips | |
| JP7070287B2 (en) | Manufacturing method of press-molded parts and press-molded parts | |
| US2654942A (en) | Method of making cupped shells | |
| RU2527820C2 (en) | Method of forging box from steel blank at simple-action press | |
| CN207463950U (en) | A multi-station continuous stretch stamping die | |
| CN216540471U (en) | Die for stretch forming of special-shaped part | |
| US6649276B1 (en) | Sheet metal member and method of manufacturing the member |