EP3507036A1 - Cutting tool, fastening system and use of a cutting tool - Google Patents
Cutting tool, fastening system and use of a cutting toolInfo
- Publication number
- EP3507036A1 EP3507036A1 EP17751731.5A EP17751731A EP3507036A1 EP 3507036 A1 EP3507036 A1 EP 3507036A1 EP 17751731 A EP17751731 A EP 17751731A EP 3507036 A1 EP3507036 A1 EP 3507036A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- face
- cutting tool
- tool according
- fastening
- nut
- 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.)
- Withdrawn
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 208000031872 Body Remains Diseases 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 239000002569 water oil cream Substances 0.000 description 1
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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
-
- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
-
- 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/10—Incompletely punching in such a manner that the parts are still coherent with the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
- B23P19/062—Pierce nut setting machines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
- F16B37/041—Releasable devices
- F16B37/043—Releasable devices with snap action
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
- F16B37/044—Nut cages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
- F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
- F16B37/062—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting
- F16B37/065—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting by deforming the material of the nut
- F16B37/067—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting by deforming the material of the nut the material of the nut being deformed by a threaded member generating axial movement of the threaded part of the nut, e.g. blind rivet type
Definitions
- the present invention relates to a cutting tool, in particular a punch, a fastening system, a molding tool and a use of a cutting tool.
- Cutting tools or punches of the type in question are basically known from the prior art. Such tools are used in particular for punching or punching holes, apertures, etc. Such tools can be operated by hand. But it is also common to integrate such tools in other tools, for example in mold halves of hydroforming tools. This is z. B. possible to simultaneously manufacture, for example, a hole during the hydroforming process.
- This object is achieved by a cutting tool according to claim 1, by a fastening system according to claim 8, by a molding tool according to claim 10 and by a use according to claim 11. Further advantages and features will become apparent from the dependent claims and the description and the accompanying figures.
- a cutting tool in particular a punch, comprises a main body and an additional body, wherein the main body extends along a longitudinal axis and ends in a first end face and in a second end face, the second end face being inclined and / or offset from the first end face, and wherein the additional body terminates in a third end face which is laterally offset from the second end face.
- the third end face is thus arranged or formed next to or laterally to the second end face, wherein the third end face in this case z. B. may also be formed immediately adjacent to the second end face. Based on a center line of the main body of the additional body is arranged radially offset or formed.
- the first end face is bounded by a punching edge, which is formed partially blunt.
- the blunt area the second end face is formed or the second end face forms this blunt area.
- the third end face is provided (adjacent thereto), which is designed to fold away the punched slug to the side, so that it is possible to attach attachments, such as mounting plugs etc., in a fastening opening thus produced.
- the third end face thus acts as a kind of abutting surface, which, when the cutting tool enters a workpiece, pushes away the stamping of the cutting tool displaced, with respect to the longitudinal axis or direction of movement of the
- Shifts cutting tool in particular substantially radially away.
- the first end face is arranged substantially perpendicular to the longitudinal axis.
- the end face is preferably flat or smooth.
- the end face can also, at least in regions, have a curvature.
- the second end face which is formed adjacent to the first end face.
- a transition region is preferably formed, which may be formed as a substantially straight edge, this "edge" may also be formed as a radius to provide a substantially stepless transition.
- the third end face is inclined and / or arranged offset to the first end face, in particular offset along the longitudinal axis. Based on a cross section of the base body is thus created by the additional body a kind of supernatant, which allows the pushing away of the punching.
- the actual design of the third end face can be chosen freely as far as possible, since it depends in particular on the geometry of the base body and the geometry of the attachment to be attached later.
- the second end face and the third end face merge into one another, whereby in particular "steer-over” is meant a stepless transition
- the second end face can also contribute to pushing away the stamped body third end face a common surface, which is inclined relative to the first end face.
- the cross section of the base body is round, in particular circular or angular, in particular four-, five- or hexagonal. Typical diameters are in a range of approximately 4-15 mm.
- the substantially quadrangular or in particular square cross-section of the base body which results in a substantially square attachment opening, advantageously allows the insertion of an expansion nut.
- a substantially round basic body allows the use of a mounting plug, a substantially hexagonal basic body the arrangement of a (hexagonal) blind rivet nut, while for the use of a cage nut a substantially rectangular cross-section of the base body is advantageous.
- a cross section of the additional body is round, in particular circular or angular, in particular quadrangular, such as square or rectangular.
- a basic cross section of the additional body essentially corresponds to a basic cross section of the main body.
- a substantially circular segment-shaped cross-section of the additional body has proven to be advantageous for the arrangement of a spreader a substantially square, for the arrangement of a cage nut a substantially rectangular cross-section and for the arrangement of a (hexagonal) blind rivet a substantially hexagonal cross-section.
- the cutting tool is a one-piece tool, which forms the base body and the additional body.
- the corresponding cutting geometry, comprising the various end faces, etc., are then preferably produced by a subsequent machining of a corresponding tool blank.
- this expediently also comprises a suitably designed connection area for connection or for connection to an actuating device, etc. In particular, for example, a driving notch is provided.
- a plurality of, for example juxtaposed, additional body may be provided, in particular, for example, when the body has a rather elongated cross-sectional shape.
- the additional body for example two or three, are then advantageously arranged on the longer edge of the main body.
- an angle between the first end face and the third end face or the second end face is in a range of about 100-130 °, preferably in a range of about 1 10-128 °.
- an angle in a range of approximately 123-128 ° has proven to be advantageous for the arrangement of an expansion nut, for the arrangement of a mounting plug an angle in a range of approximately 1 10-1 18 °, for the arrangement of a cage nut (Prestole- Cage) or a blind rivet nut an angle in a range of about 109-1 15 °.
- the invention is further directed to a fastening system, comprising a fastening element, which is arranged or can be arranged in a fastening opening of a component, wherein the fastening opening is punched in such a way that the stamping remains at the fastening opening.
- a fastening system comprising a fastening element, which is arranged or can be arranged in a fastening opening of a component, wherein the fastening opening is punched in such a way that the stamping remains at the fastening opening.
- an inventive cutting tool is used to produce such a mounting opening, which allows that fasteners, such as attachments in the form of mounting plugs, etc., can be inserted or mounted in the mounting hole, although the punching was not removed.
- the fastening element is an expansion nut, a mounting plug, a cage or blind rivet nut. It applies to the fastening system according to the invention in connection with the Cutting tool mentioned advantages and features analogous and corresponding and vice versa.
- the invention is also directed to a molding tool for the production of components formed by means of internal high pressure, comprising at least one cutting tool according to the invention.
- the mold is a mold half of a hydroforming tool.
- This has at an inner contour, which forms an outer contour of the later component, expediently at least one inventive cutting tool which is movable relative to the inner contour of the corresponding mold half, whereby during and / or after the actual process of hydroforming the component, a mounting opening are manufactured / punched can.
- Typical internal pressures are in a range of about 1600 bar.
- the pressure is z. B. brought over an oil-water emulsion in the hollow body.
- the invention is also directed to a use of a cutting tool according to the invention for producing a fastening opening in a vehicle component, in particular, for example, an axle carrier of a passenger car.
- a vehicle component in particular, for example, an axle carrier of a passenger car.
- the axle carrier is a component that is at least partly or partially reshaped by internal high pressure, in particular, for example, a metal such as steel or aluminum.
- Typical (component) wall thicknesses are in a range of about 2 to 3 mm.
- the internal pressure used which acts as a support pressure during punching, depends, among other things, on the wall thickness, the stamp geometry and the respective material. With wall thicknesses of 2 to 3 mm and the use of a steel material (eg S 355), internal pressures in a range of about 1600 bar have proved to be advantageous. Further advantages and features will become apparent from the following description of preferred embodiments of cutting tools with reference to the accompanying figures. Different features can be combined with each other within the scope of the invention.
- FIG. 2 shows two detailed views of the cutting tool from FIG. 1;
- FIG. 3 shows several illustrations which, using the example of a mounting plug, illustrate the mode of operation of an embodiment of a cutting tool
- Fig. 4 two detail views of the cutting tool of Fig. 3;
- FIG. 5 shows several representations which, using the example of a cage nut, illustrate the mode of operation of an embodiment of a cutting tool
- FIG. 6 shows two detailed views of the cutting tool from FIG. 5;
- Fig. 7 two representations, which illustrate the operation of an embodiment of a cutting tool, the example of a blind rivet nut.
- FIG. 1 shows on the left a fastening element 60 in the form of an expanding nut 61.
- a tubular member 40 In the middle of a tubular member 40 is indicated, through the outer wall of a cutting tool, comprising a base body 20 and a Additional body 30, penetrates. For the attachment or actuation of the cutting tool, this comprises a connection region 24.
- a fastening opening 42 is formed by the entry of the cutting tool into the component 40 or its outer wall, the geometry of which is recognizable on the folded punched slug 44. It becomes clear that the "pushing to the side" of the stamped casing 44 is accomplished primarily by the additional body 30.
- the expanding nut 61 is arranged in the mounting opening 42 produced in this way, this being particularly effective the folding and the lateral displacement of the stamped casing 44 is made possible, see the right-hand illustration, which shows the arrangement of the spreader nut 61 in the mounting opening 42.
- the stamped plug 44 does not disturb the arrangement of the mounting plug 62.
- the stamping takes place together with a hydroforming method, with which also the component 40 is deformed.
- the applied internal high pressure acts as support pressure during punching.With a wall thickness of about 2 to 3 mm, the internal high pressure is at about 1600 bar (material: steel, eg S 355).
- Fig. 2 shows in its left half of a detail view of a lower part of the known from FIG. 1 cutting tool. Visible are the main body 20 and the laterally arranged or formed auxiliary body 30, wherein both extend along a longitudinal axis L of the cutting tool.
- the reference symbol M denotes a center line of the base body.
- a first end face 21, a second end face 22 and a third end face 31 can be seen.
- an angle ⁇ is formed which, in the embodiment shown here, lies in a range of approximately 125 °.
- the length x1 in the embodiment shown here is about 9.5 mm.
- the base body 30 or its third end face 31 essentially has a quadrangular, in particular rectangular, cross section, wherein a side length x 2 in the embodiment shown here is about 4 mm.
- the side lengths x4 and x5 of the substantially quadrangular, in particular square, basic body 20 amount to approximately 9 mm in the embodiment shown here.
- the length x3 is advantageously about 6 mm. This means a distance from a center line of the main body 30 to an outer edge of the additional body 30.
- FIGS. 3 to 4 and 5 to 6 respectively show the principle essentially known from FIGS. 1 and 2, wherein in FIGS. 3 and 4 a fastening element 60 is designed as a mounting plug 62 and in FIGS. 5 and 6 a fastening element 60 as a Cage nut (Prestole cage) 63.
- a fastening element 60 is designed as a mounting plug 62 and in FIGS. 5 and 6 a fastening element 60 as a Cage nut (Prestole cage) 63.
- a Cage nut Prestole cage
- an angle ⁇ between a first end face 21 and a third end face 31 or a second end face 22 is preferably about 13 °, wherein the length x1 is about 10.2-10.3 mm.
- a diameter d2 of the main body 30 is approximately 12 mm, wherein a diameter d1 of the auxiliary body 30, which is essentially circular-segment-shaped in its cross section, lies in a range of approximately 8 mm.
- a length x2 is about 4 mm in the embodiment shown here.
- FIGS. 5 and 6 An angle a, which is measured between a first end face 21 and a third end face 31 and a second end face 22, is in the embodiment shown here at about 1 12 °.
- the length x1 is about 8.14 mm.
- a main body 20 of the cutting tool is substantially rectangular in the embodiment shown here formed, with a side length x3 is about 13 mm, a side length x4 at about 9 mm.
- An additional body 30 is also formed in the embodiment shown here is substantially rectangular, with a side length x2 is about 2 mm and a side length x5 at about 6 mm.
- FIG. 7 shows a punching tool designed to arrange a blind rivet nut 64.
- a length x1 is about 3 mm
- the length x2 is about 2 mm
- the length x3 is about 13 mm.
- An angle between a third end face 31 and a first end face 21 is about 1 12 °.
- the exact geometry of the cutting tool must always be matched to the application. In this respect, it is also quite possible, if necessary, to combine round basic bodies with angular additional bodies or vice versa.
- the second and the third end faces merge into each other steplessly.
- the third end face for example, has a different inclination, for example, is steeper or shallower aligned than the second End face or even substantially parallel to the first end face.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016216255.1A DE102016216255A1 (en) | 2016-08-30 | 2016-08-30 | cutting tool |
PCT/EP2017/070284 WO2018041587A1 (en) | 2016-08-30 | 2017-08-10 | Cutting tool, fastening system and use of a cutting tool |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3507036A1 true EP3507036A1 (en) | 2019-07-10 |
Family
ID=59593080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17751731.5A Withdrawn EP3507036A1 (en) | 2016-08-30 | 2017-08-10 | Cutting tool, fastening system and use of a cutting tool |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3507036A1 (en) |
DE (1) | DE102016216255A1 (en) |
WO (1) | WO2018041587A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19719426B4 (en) | 1997-05-12 | 2005-06-16 | Dr. Meleghy Hydroforming Gmbh & Co. Kg | Method and device for producing a hollow body |
US6109086A (en) | 1999-06-24 | 2000-08-29 | Daimlerchrysler Corporation | Punch and method for forming slugless pierced conical extrusions |
US7484397B2 (en) * | 2006-01-12 | 2009-02-03 | Vari-Form, Inc. | Punch, apparatus and method for forming opposing holes in a hollow part, and a part formed therefrom |
US7204113B1 (en) * | 2006-09-29 | 2007-04-17 | Gm Global Technology Operations, Inc. | Punch for hydroforming die |
JP2008126795A (en) * | 2006-11-20 | 2008-06-05 | Hiruta Kogyo Co Ltd | Pipe material for automobile structural member, through-hole forming punch, and through-hole forming method |
-
2016
- 2016-08-30 DE DE102016216255.1A patent/DE102016216255A1/en active Pending
-
2017
- 2017-08-10 WO PCT/EP2017/070284 patent/WO2018041587A1/en unknown
- 2017-08-10 EP EP17751731.5A patent/EP3507036A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2018041587A1 (en) | 2018-03-08 |
DE102016216255A1 (en) | 2018-03-01 |
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