GB2340423A - Method and apparatus for working sheet material - Google Patents
Method and apparatus for working sheet material Download PDFInfo
- Publication number
- GB2340423A GB2340423A GB9919190A GB9919190A GB2340423A GB 2340423 A GB2340423 A GB 2340423A GB 9919190 A GB9919190 A GB 9919190A GB 9919190 A GB9919190 A GB 9919190A GB 2340423 A GB2340423 A GB 2340423A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tools
- sheet material
- tool
- jaw member
- jaw
- 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.)
- Granted
Links
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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
- B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
- B21D19/043—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers for flanging edges of plates
-
- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D19/00—Shearing machines or shearing devices cutting by rotary discs
- B23D19/04—Shearing machines or shearing devices cutting by rotary discs having rotary shearing discs arranged in co-operating pairs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
- B26D1/22—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a movable member, e.g. a roller
- B26D1/225—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a movable member, e.g. a roller for thin material, e.g. for sheets, strips or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
- B26D1/24—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
- B26D1/245—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter for thin material, e.g. for sheets, strips or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2628—Means for adjusting the position of the cutting member
- B26D7/2635—Means for adjusting the position of the cutting member for circular cutters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/227—Surface roughening or texturing
Abstract
For working of sheet material to allow that material to be bent to a complex shape or cut, there is provided apparatus comprising a jaw having an upper jaw member and a lower jaw member, a first tool 4A associated with the upper jaw member, a second tool 4B associated with the lower jaw member, said tools being operable to work sheet material fed between the tools, and adjustment means whereby at least one of the spacing between the tools and the force with which the tools bear against one another or an interposed workpiece may be selectively varied.
Description
1 2340423 Method and Apparatus for Working Sheet Material This invention
relates to a method of and apparatus for working sheet material such as sheet metal, for example to shape or cut that material.
The invention relates in particular, though not exclusively, to a method and apparatus whereby sheet material may be worked under the hand control of an operator to provide it with a non-linear cut or worked line the shape of which is determined by said operator.
In accordance with one aspect of the present invention an apparatus for working sheet material comprises:- - a jaw having an upper jaw member and a lower jaw member; - a first tool associated with said upper jaw member a second tool associated with said lower jaw member, said tools being operable to work sheet material fed between the tools, and - adjustment means whereby at least one of the spacing between the tools and the force with which the tools bear against one another or an interposed workpiece may be selectively varied.
The adjustment means may be operable to control a spacing of one tool from the other. The adjustment means may be operable to vary the spacing of the upper and lower jaw members or it may, for example, vary the relative positioning of a tool and the jaw member associated with that tool.
The apparatus may comprise biasing means, such as a leaf or compression spring arranged to bias one of the tools to move in a direction away from the other tool, for example to bias it in a direction towards adjustment means. The biasing means preferably acts on a jaw member, more preferably the upper jaw member, to bias it against an adjustment means, but it is to be understood that in one alternative the biasing means may act between a tool and jaw member.
Preferably at least one of the tools is rotatable. More preferably both tools are rotatable, with one tool being rotatable in a direction opposite the direction of rotation of the other tool. The tools may be axially aligned with each other as considered relative to their respective axes of rotation. One or both tools may be rotatable under the control of a drive means such as a driven shaft thereby, in use, to draw sheet material between the tools. The drive means may be of a manually operated type, or powered by, for example, an electric motor. The or each drive shaft or other drive means may be selectively removable. A drive shaft, typically but not necessarily that associated with an adjustably positioned jaw member, may incorporate a universal joint.
At least one of the jaw members may be provided with a selectively releasable tool retainer to facilitate interchange of tools for performing different operations.
2.
The jaw may be substantially of a U-shape comprising a pair of limb sections. Each limb section may have a length at least five, preferably at least ten times the spacing of the axis of rotation of the tools, in the case of an apparatus having a pair of tools which are rotatable.
The jaw members preferably are positioned at or close to distal ends of the respective limb sections.
The apparatus may comprise said biasing means in the form of a leaf spring and said spring may extend lengthwise parallel with the length of one of the limb sections. A limb section may be hollow and the leaf spring may extend lengthwise within said hollow limb section.
The apparatus may be adapted to stand on a table or a bench, or to be clamped in a vice. The apparatus may comprise a base plate for mounting the jaw on a table, bench or vice etc..
The invention provides also a method for working sheet material comprising feeding sheet material through apparatus of a kind as or substantially similar to that of the present invention and simultaneously steering said material whereby said tools each execute a non-linear path over a respective surface of a sheet material.
The invention provides a method of making an article of complex curvature wherein subsequent to performing the method aforedescribed to create a non-linear line marking which extends part-way, but not wholly, through the thickness of the material, the material is bent about that line thereby to transform an initially flat surface into curved surface regions.
Embodiments of the invention will now be described, by way of example only, with reference to accompanying drawings in which:- Figure 1 is an isometric view of an apparatus in accordance with the present invention; Figure 2 is a side view of part of the apparatus of figure 1; Figures 3A to 3C show in successive stages material passing between a pair of rotatable tools; Figures 4A to 4D, 5A,5B,6A,6B,7A, 7B, 8A,8B and 9 show yet further shapes of tools for use in the apparatus of Figures 1 and 2.
3.
Referring to figures 1 and 2 there is shown an apparatus 1 for working sheet material ( such as metal) having a frame 2. Frame 2 defines a generally U-shaped jaw 3 having an upper jaw member 3A supported by an upper limb section 9A and a lower jaw member 3B supported by a lower limb section 9B. Upper jaw member 3A carries an upper tool 4A connected to and adapted to rotate about an axis defined by upper drive shaft 5A. Lower jaw member 3B carries a lower tool 4B connected to and adapted to rotate about an axis defined by lower drive shaft 5B. A drive means is provided in the form of handle 6 directly linked to lower shaft 5B. A pair of cogs 6A, 6B connect the lower shaft 5B to the upper 5A shaft so that as handle 6 is rotated, both shafts ( and hence tools 4A, 4B) rotate in opposite directions.
Retainers 14A, 14B can be unscrewed to allow each jaw member to be opened and a tool exchanged for a replacement or one of another type.
If sheet material is fed into the jaw 3 and the handle 6 is rotated, the tools will draw the sheet through the jaw and also modify the material into a form dependent on the type of tools.
Upper jaw member 3A is connected to the frame 2 by a leaf spring 3C ( biasing the jaw member 3A upwards) and can be moved up or down relative to the frame 2 by turning handle 7 which rotates a threaded shaft 7A in a threaded recess 8. This provides a spacing means to adjust the distance between the tools on the upper and lower jaw members, and hence the tool pressure on the sheet material being passed through the jaw. The distance between the jaws may be adjusted according to the nature of the material being worked and the nature of the tools being used at any one time. The drive shaft 5A or its support bearing may be adapted to accommodate movements in the upper jaw member 3A, for example by providing a universal joint 15.
The frame 2 includes a base plate 9 for mounting the apparatus on a table or bench. Holes 10 are provided to accommodate screws or bolts to secure the apparatus to a table or bench. Alternatively a block may be secured to the base plate to support the apparatus in a vice.
As illustrated below, the apparatus may include a plurality of interchangeable sets of tools to perform different operations.
Referring now to Figures 3A,3B and 3C, it will be seen that the upper tool 4A may be a cutting wheel and the lower tool 4B may be a roller. In order to cut a piece of sheet material 11 into two halves, the material 11 is moved between the tools 4A, 4B three times. Each time the material is moved between the rollers, tool 4A cuts a deeper slot in the material until it cuts through the material 11 as shown sequentially in Figures 3A, 313, 3C.
Instead of being used to cut sheet material, the tool may be designed to crease sheet material in order that it may be folded. Figures 4A, 413, 4C, 4D show respectively different shapes of upper tools 4A which can be used with lower tool 4B in the form of a roller (as in figure 3A), the impression each makes in the sheet material, and how the material folds subsequently.
4.
As the material is passed through the tools 4A, 413, the material can be steered to create crease lines which are non-linear, such as a snaking path as shown at the bottom of Figures 4A, 413, 4C, 4D. As shown by Figures 4A to 4D, the larger the radius ( considered in a plane containing the axis of rotation of the tool) on the upper tool 4A ( Figure 4D) the sharper the curvature of the snaking path can be.
Referring now to Figures 5A, 5B, one or both of the tools 4A, 413 may incjuded a shoulder to form a step 12A in the sheet material 12B which can then be overlapped by sheet 12C. Stop guides 5F may be provided to ensure the step is parallel to an edge of the material.
As shown in Figures 6A, 6B, the tools 4A, 413 may be designed to perform a sheer cut in sheet material 11.
As shown in Figures 7A, 713, tool 4A may include a series of circumferential teeth 13A in order to create a perforated line in the sheet material 11.
As shown in Figure 8A, 8B, one or both tools 4A, 413 may be rollers with a textured perimeter in order to impart a textured, knurled or planished finish to the sheet material.
In order to create spherical forms such as a bowl, the lower drive shaft 513 may be removed in order to provide clearance in the jaw for the curving of sheet material 11 as shown in Figure 9. In figure 9 the lower tool 413 has a curved radius perimeter with a flat perimeter roller for tool 4A.
Instead of tools being rotated by handle 6 to draw the sheet material through the apparatus, the tools could be free to rotate on an axis and the sheet material could be pushed manually through the apparatus.
Whilst the apparatus and method of the invention can be used for working many materials including sheet metal, plastics sheeting and laminates, abrasive sheet, cardboard, wood, fabrics, paper, rubber and leather and so on, it can be employed also for materials not in sheet form, such as wires and cables.
The apparatus may comprise additional guides, jigs or pivots to produce a variety of guided shapes such as straight lines, circles, angular lines, helix on a tube, spirals, and repetitive cuts or creases with any of these.
If a motor is used to drive the tools it may be operated by a foot control mechanism, and may drive the tools in two directions.
PRDGI3DE2
Claims (21)
1 Apparatus for working sheet material comprising; - a jaw having an upper jaw member and a lower jaw member; a first tool associated with said upper jaw member; a second tool associated with said lower jaw member, said tools being operable to work sheet material fed between the tools, and adjustment means whereby at least one of the spacing between the tools and the force with which the tools bear against one another or an interposed workpiece may be selectively varied.
2. Apparatus according to claim 1, wherein said adjustment means is operable to control a spacing of one tool from the other.
3. Apparatus according to claim 2, wherein said adjustment means is operable to vary the spacing of the upper and lower jaw members.
4. Apparatus according to any one of the preceding claims, wherein it comprisies biasing means arranged to bias one of the tools to move in a direction away from the other tool.
5. Apparatus according to claim 4, wherein said biasing means acts on a jaw member to bias that member against said adjustment means.
6. Apparatus according to claim 5, wherein said biasing means acts on the upper jaw member.
7. Apparatus according to any one of the preceding claims, wherein at least one of the tools is rotatable.
8. Apparatus according to claim 7, wherein said tools are rotatable in opposite directions.
6.
9. Apparatus according to claim 7 or claim 8, wherein at least one of the tools is rotatable under the control of drive means thereby, in use, to draw sheet material between the tools.
10. Apparatus according to claim 9, wherein said drive means comprises a selectively removable drive shaft.
11. Apparatus according to claim 9 or claim 10, wherein said drive means comprises a drive shaft and a universal joint.
12. Apparatus according to any one of the preceding claims, wherein said tools are axially aligned with each other as considered relative to their respective axes of rotation.
13. Apparatus according to any one of the preceding claims, wherein at least one of the jaw members is provided with a selectively releasable tool retainer.
14. Apparatus according to any one of the preceding claims, wherein said jaw is substantially of a U shape comprising a pair of limb sections.
15. Apparatus according to claim 14, wherein the tools are each rotatable and said two limb sections each have a length at least five times the spacing of the axes of rotation of the tools.
16. Apparatus according to claim 14 or claim 15, wherein said jaw members are positioned at or close to distal ends of limb sections of the jaw.
17. Apparatus. according to any one of claims 14 to 16 when dependent on any one of claims 4 to 6, wherein said biasing means is a leaf spring which extends lengthwise parallel with the length of a limb section of the jaw.
18. Apparatus according to claim 17, wherein a limb section is hollow and said leaf spring extends lengthwise within said hollow limb section.
7.
19. Apparartus according to claim 1 and substantially as hereinbefore described.
20. Method for working sheet material comprising feeding sheet material through apparatus substantially as claimed herein and simultaneously steering said material whereby said tools each execute a non-linear path over a respective surface of the sheet material.
21. Method of working sheet material according to claim 20 and substantially as hereinbefore described.
PRDWCL1
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9817858.5A GB9817858D0 (en) | 1998-08-18 | 1998-08-18 | Sheet material working apparatus |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9919190D0 GB9919190D0 (en) | 1999-10-20 |
| GB2340423A true GB2340423A (en) | 2000-02-23 |
| GB2340423B GB2340423B (en) | 2002-11-06 |
Family
ID=10837352
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB9817858.5A Ceased GB9817858D0 (en) | 1998-08-18 | 1998-08-18 | Sheet material working apparatus |
| GB9919190A Expired - Fee Related GB2340423B (en) | 1998-08-18 | 1999-08-16 | Method and apparatus for working sheet material |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB9817858.5A Ceased GB9817858D0 (en) | 1998-08-18 | 1998-08-18 | Sheet material working apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB9817858D0 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218954A (en) * | 2011-04-13 | 2011-10-19 | 深圳市精密达机械有限公司 | Automatic cover cutting mechanism for binding machine |
| CN103240457A (en) * | 2011-12-31 | 2013-08-14 | 新华都特种电气股份有限公司 | Head for cutting machine and cutting machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB368174A (en) * | 1931-06-25 | 1932-03-03 | Herbert Arthur Johnson | Improved apparatus for smoothing sheet metal |
| GB474060A (en) * | 1936-07-06 | 1937-10-25 | John Liston Dalrymple | Improvements relating to machines for bending sheet metal |
| GB491280A (en) * | 1937-10-21 | 1938-08-30 | Ungerer Fritz | Machine for straightening metal plates |
| GB526508A (en) * | 1939-03-18 | 1940-09-19 | Clifford Moseley | Improvements relating to wheeling machines for performing shaping, smoothing and like operations on sheet metal |
| GB2190316A (en) * | 1986-05-12 | 1987-11-18 | James Robert Diggins | Flange rolling tool |
| US4857412A (en) * | 1986-01-16 | 1989-08-15 | Paul Fleury | Method for forming a planar sheet or plate to a curved shape |
-
1998
- 1998-08-18 GB GBGB9817858.5A patent/GB9817858D0/en not_active Ceased
-
1999
- 1999-08-16 GB GB9919190A patent/GB2340423B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB368174A (en) * | 1931-06-25 | 1932-03-03 | Herbert Arthur Johnson | Improved apparatus for smoothing sheet metal |
| GB474060A (en) * | 1936-07-06 | 1937-10-25 | John Liston Dalrymple | Improvements relating to machines for bending sheet metal |
| GB491280A (en) * | 1937-10-21 | 1938-08-30 | Ungerer Fritz | Machine for straightening metal plates |
| GB526508A (en) * | 1939-03-18 | 1940-09-19 | Clifford Moseley | Improvements relating to wheeling machines for performing shaping, smoothing and like operations on sheet metal |
| US4857412A (en) * | 1986-01-16 | 1989-08-15 | Paul Fleury | Method for forming a planar sheet or plate to a curved shape |
| GB2190316A (en) * | 1986-05-12 | 1987-11-18 | James Robert Diggins | Flange rolling tool |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218954A (en) * | 2011-04-13 | 2011-10-19 | 深圳市精密达机械有限公司 | Automatic cover cutting mechanism for binding machine |
| CN103240457A (en) * | 2011-12-31 | 2013-08-14 | 新华都特种电气股份有限公司 | Head for cutting machine and cutting machine |
| CN103240457B (en) * | 2011-12-31 | 2015-03-25 | 新华都特种电气股份有限公司 | Head for cutting machine and cutting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9817858D0 (en) | 1998-10-14 |
| GB9919190D0 (en) | 1999-10-20 |
| GB2340423B (en) | 2002-11-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20100816 |