EP3969200A1 - Verfahren zur demontage eines blindniets in einer werkstückanordnung - Google Patents
Verfahren zur demontage eines blindniets in einer werkstückanordnungInfo
- Publication number
- EP3969200A1 EP3969200A1 EP20727172.7A EP20727172A EP3969200A1 EP 3969200 A1 EP3969200 A1 EP 3969200A1 EP 20727172 A EP20727172 A EP 20727172A EP 3969200 A1 EP3969200 A1 EP 3969200A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sleeve
- screw
- central axis
- section
- hole
- 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- Withdrawn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
- 238000000034 method Methods 0.000 title claims abstract description 59
- 238000005520 cutting process Methods 0.000 claims abstract description 140
- 230000007704 transition Effects 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
- B21J15/50—Removing or cutting devices for rivets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/18—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same withdrawing broken threaded parts or twist drills
Definitions
- the present invention relates to a method for dismantling a blind rivet in a workpiece arrangement. Further aspects of the invention relate to cutting tools for dismantling a blind rivet in a workpiece arrangement, in particular according to such a method.
- Blind rivets are increasingly used, especially in aircraft construction, to enable increasing automation in the production process. This is mainly due to the fact that with blind rivets it is possible to attach them from only one side of the workpiece arrangement to be connected. For the e.g. Dismantling of blind rivets, which is often necessary for maintenance reasons, has hitherto been necessary to drill out the rivet, which is complex, time-consuming and usually not possible without damaging the workpiece.
- a workpiece arrangement in which a blind rivet is located.
- the workpiece arrangement comprises a single workpiece or several workpieces resting against one another and to be connected, preferably structural components for pleasure vehicles such as skin elements of the fuselage or wings.
- the workpiece arrangement has a first surface and an opposing second surface as well as a hole, in particular a borehole or a bore, which connects the first surface to the second surface.
- a blind rivet is fastened in the hole, which has a sleeve and a screw extending through the sleeve, which is also referred to as a threaded pin.
- Both the sleeve and the screw preferably have a circular cross-section.
- the screw is preferably formed from a stronger material than the sleeve.
- the screw can be made of titanium and the sleeve of steel.
- the screw will too referred to as the core or core bolt.
- the sleeve and the screw disposed therein extend coaxially along a common central axis between a first end on the side of the first surface and a second end on the side of the second surface of the workpiece arrangement.
- the sleeve viewed along the central axis from the first to the second end, initially has a sleeve head section with a diameter which is larger than the diameter of the hole in the workpiece arrangement and in this way forms a counter-support on the side of the first end or the first surface. Subsequently, the sleeve has a straight section, the diameter of which, viewed along the central axis, is preferably constant and the outer diameter of which is smaller than or equal to the diameter of the hole. Subsequently, the sleeve has a deformation section which is formed from a deformable material and in particular deforms more easily than the thread section, so that under axial load the deformation section is initially deformed before the thread section would deform.
- the sleeve then has a threaded section with an internal thread.
- the straight section is located in the hole and preferably rests with its outer surface on the wall of the hole, possibly with some play.
- the deformation section and the thread section protrude from the hole on the side of the second surface.
- the screw When viewed along the central axis from the first to the second end, the screw initially has a screw head section with a diameter which is greater than the diameter of the hole. Subsequently, the screw has a pin section, the diameter of which, viewed along the central axis, is preferably constant and is smaller than or equal to the inner diameter of the sleeve, in particular the straight section of the sleeve. Viewed along the central axis, at least a part of the pin section, preferably the part that has the second end, has an external thread.
- the screw is arranged in the sleeve in such a way that the internal thread of the sleeve engages in the external thread of the screw and, by a rotational movement of the screw, the threaded section is or has been moved axially along the pin section towards the first end, the deformation section of the sleeve plastically deformed, in particular outward, is or has been unfolded away from the central axis, so that the outer diameter of the deformed deformation section is greater than the diameter the hole and the deformation section in this way form a counter bearing on the side of the second end or the second surface, which is preferably in contact with the second surface.
- the blind rivet can be fastened in the hole simply by turning the screw at the first end, in particular at the screw head section, ie from the side of the first surface, and can hold the workpiece arrangement together.
- the side of the second surface of the workpiece arrangement does not have to be accessible for this.
- the sleeve is now cut to remove the blind rivet.
- the sleeve is in the area of the threaded section and / or the deformation section, i.e. on the side of the second surface of the workpiece arrangement, cut, preferably with a cutting tool which has a cutting edge which is moved in the radial direction towards the central axis against the sleeve.
- the blind rivet is then removed from the hole.
- the blind rivet can be removed in a quick, simple and safe manner without the need for a complex and complete drilling out of the blind rivet which would damage the workpiece arrangement.
- the sleeve is cut with at least one cut parallel to the central axis. As a result, the sleeve bursts open along the cut, so that the diameter increases and the internal thread of the sleeve disengages from the external thread of the screw.
- the cut extends at least along the thread section, preferably along the entire thread section. In this way, the engagement of the external thread and internal thread can be released.
- the cutting of the sleeve takes place with a cutting tool which has a blade with a straight cutting edge which is moved parallel to the central axis in a radial direction towards the central axis against the sleeve until the sleeve is cut along the cutting edge, i. is separated. In this way the sleeve can be cut with a single movement of the blade.
- the cutting tool has a support body with a contact surface for contact with the second surface of the workpiece arrangement and one of of the contact surface starting bore, which is adapted to the outer shape of the threaded section and preferably also of the deformation section, and with a guide slot extending radially outward from the bore.
- the blade is movably guided in such a way that the cutting edge preferably runs parallel to the central axis of the bore and can be moved into the bore and preferably towards the central axis.
- the cutting tool is arranged such that the contact surface rests against the second surface of the workpiece arrangement and the blind rivet protruding from the hole on the second surface extends into or through the bore so that the central axis of the bore is coaxial with the central axis the screw runs.
- the blade is then moved in the guide slot in the direction of the central axis towards the sleeve until the cutting edge cuts the sleeve, in particular the threaded section of the sleeve. In this way, the sleeve can be cut very easily and reliably.
- one or more further cutting edges are provided from the guide slot, which extend parallel to the central axis and to which the threaded section rests when it is in the bore so that the pressure exerted on the sleeve by the cutting edge of the blade also cuts the sleeve from the other cutting edges.
- the screw is removed towards the side of the first surface. This is possible because, as a result of the cutting of the sleeve, the internal thread of the sleeve is no longer or not completely in engagement with the external thread of the screw, so that the screw can be released from the sleeve.
- the screw is preferably removed by striking the second end of the screw, preferably in the axial direction. This is particularly useful if there is still a slight residual engagement of the thread.
- the sleeve head section is drilled out from the side of the first surface and then removed. The drilling is preferably carried out with a drill whose diameter corresponds to the outer diameter of the straight section of the sleeve. As a result, the undrilled outer, lateral part of the sleeve head section is separated from the straight section and can easily be removed, for example removed, toward the side of the first surface.
- the remaining parts of the sleeve i. the straight section, the deformation section and the thread section, removed on the second surface side, for example removed.
- the entire blind rivet is now removed from the hole.
- the sleeve is made with at least one cut transversely, in particular perpendicular to the central axis, i. in the circumferential direction, cut up. In this way the severed part of the sleeve can be unscrewed from the external thread of the screw and removed.
- the sleeve is cut at the transition between the deformation section and the straight section.
- this transition between the deformation section and the straight section represents a part of the deformation section. In this way, the deformation section together with the threaded section can be released from the straight section and unscrewed from the external thread of the screw.
- the sleeve is cut in an extension of the second surface. This is particularly easy since the cutting tool can be moved along the second surface.
- the sleeve is cut with a cutting tool that has a blade with a cutting edge that is moved perpendicular to the central axis in the radial direction towards the central axis against the sleeve until the sleeve is cut, ie separated, along the cutting edge. In this way, the sleeve can be cut very easily.
- the cutting edge is moved between the second surface and the deformation section for cutting the sleeve. In this way, the blade can be guided along the second surface and the sleeve can be cut between the deformation section and the straight section.
- the cutting edge is first moved in the radial direction towards the central axis against the sleeve and then the cutting tool is rotated around the central axis so that the cutting edge continuously cuts the sleeve in the circumferential direction. In this way, the sleeve can be cut completely from all sides without having to make several separate cuts.
- the blade is concavely curved relative to the sleeve. In this way, a larger area of the sleeve can be cut with one cut.
- the cutting edge has a radius of curvature greater than or equal to the inner radius of the sleeve. This enables a particularly effective cut to be made.
- the blade can also have a straight cutting edge.
- the sleeve is then continuously in. By rotating the cutting tool relative to the sleeve about the central axis Cut in the circumferential direction.
- a straight cutting edge is a particularly simple and inexpensive construction.
- the cutting tool has two blades with opposite cutting edges, which are moved towards the sleeve from opposite, in particular opposite, sides in order to cut the sleeve.
- the two cutting edges preferably have the same radius of curvature.
- the cutting tool has a support body, preferably in the form of a frame, with a contact surface for contact with the second surface of the workpiece arrangement and an opening extending from the contact surface perpendicularly along a central axis into which the second surface protruding from the hole part of the blind rivet, in particular the threaded portion and the deformation portion of the sleeve, and which is adapted to the outer shape of the threaded portion of the sleeve and preferably also the pin portion of the screw.
- the two blades with opposite cutting edges are arranged movably guided in such a way that the cutting edges preferably run perpendicular to the central axis and can be moved from opposite sides in the radial direction towards the central axis.
- the cutting tool for cutting the sleeve is arranged on the workpiece arrangement in such a way that the contact surface rests against the second surface and the blind rivet extends into or through the opening so that the central axis runs coaxially with the central axis, after which the blades are preferably moved simultaneously from opposite sides along the second surface towards the sleeve and cut it at the transition between the deformation section and the straight section. In this way, the sleeve can be cut particularly easily.
- the threaded section and the deformation section on the side of the second surface are unscrewed from the external thread of the screw and removed.
- the counter bearing is therefore also on the side of the second surface removed so that the screw and the remaining parts of the sleeve can be removed on the opposite side of the first surface.
- the screw is removed towards the side of the first surface, in particular pulled out or pushed out. This is now easily possible.
- the cutting of the sleeve is carried out simultaneously, i. with one cut or in the same cutting process, the screw running in the sleeve is cut through, preferably in the extension of the second surface, after which the remaining part of the screw and the straight section of the sleeve and the sleeve head section are removed to the side of the first surface.
- Another aspect of the present invention relates to a first cutting tool for dismantling a blind rivet in a workpiece arrangement.
- the cutting tool is preferably suitable and intended for dismantling a blind rivet in a workpiece arrangement according to an embodiment of the method described above.
- the workpiece arrangement and the blind rivet are designed as described above.
- the workpiece arrangement has a first surface and an opposing second surface and a hole which connects the first surface to the second surface.
- the blind rivet which has a sleeve and a screw extending through the sleeve, is fastened in the hole.
- the sleeve and the screw disposed therein extend coaxially along a common central axis between a first end on the side of the first surface and a second end on the side of the second surface of the workpiece arrangement.
- the sleeve has a sleeve head portion with a diameter that is larger than the diameter of the Hole in the workpiece arrangement.
- the sleeve has a straight section, the outer diameter of which is smaller than or equal to the diameter of the hole.
- a deformation section and finally a threaded section with an internal thread.
- the straight section is located in the hole and the deformation section and the threaded section protrude from the hole on the side of the second surface.
- the screw has a screw head section with a diameter which is larger than the diameter of the hole, and then a pin section, the diameter of which is smaller than or equal to the inner diameter of the sleeve. Viewed along the central axis, at least a part of the pin section has an external thread.
- the screw is arranged in the sleeve in such a way that the internal thread of the sleeve engages in the external thread of the screw and the deformation section of the sleeve is deformed so that the external diameter of the deformed deformation section is greater than the diameter of the hole.
- the cutting tool has a support body with a contact surface for contact with the second surface of the workpiece arrangement and a bore extending from the contact surface, which is preferably adapted to the outer shape of the threaded section and preferably also the deformation section, and with a bore extending radially outward from the bore Has guide slot.
- a blade with a straight cutting edge is movably guided in such a way that the cutting edge preferably runs parallel to the central axis of the bore and can be moved into the bore and preferably towards the central axis.
- one or more further cutting edges are provided on the inner wall of the bore in the circumferential direction, evenly spaced from the guide slot, which extend parallel to the central axis and to which the threaded section rests when it is in the bore. In this way, through the pressure exerted on the sleeve by the cutting edge of the blade, the sleeve can also be cut by the further cutting edges from another, preferably opposite, side.
- Another aspect of the present invention relates to a second cutting tool for dismantling a blind rivet in a workpiece arrangement.
- a second cutting tool for dismantling a blind rivet in a workpiece arrangement.
- Cutting tool suitable and intended for dismantling a blind rivet in a workpiece arrangement according to an embodiment of the method described above.
- the workpiece arrangement and the blind rivet are designed as described above.
- the workpiece arrangement has a first surface and an opposing second surface and a hole which connects the first surface to the second surface.
- the blind rivet which has a sleeve and a screw extending through the sleeve, is fastened in the hole.
- the sleeve and the screw disposed therein extend coaxially along a common central axis between a first end on the side of the first surface and a second end on the side of the second surface of the workpiece arrangement.
- the sleeve has a sleeve head portion with a diameter that is larger than the diameter of the hole in the workpiece assembly. Subsequently, the sleeve has a straight section, the outer diameter of which is smaller than or equal to the diameter of the hole.
- the screw has a screw head section with a diameter which is larger than the diameter of the hole, and then a pin section, the diameter of which is smaller than or equal to the inner diameter of the sleeve. Viewed along the central axis, at least a part of the pin section has an external thread.
- the screw is arranged in the sleeve in such a way that the internal thread of the sleeve engages in the external thread of the screw and the deformation section of the sleeve is deformed so that the external diameter of the deformed deformation section is greater than the diameter of the hole.
- the cutting tool has a support body, preferably in the form of a frame, with a contact surface for contact with the second surface of the workpiece arrangement and with an opening extending from the contact surface with a central axis perpendicular to the contact surface into which the hole on the second surface extends protruding part of the blind rivet, in particular the threaded portion and the deformation portion of the sleeve, and which is preferably adapted to the outer shape of the threaded portion of the sleeve and preferably also the pin portion of the screw.
- FIG. 1 shows a cross-sectional view parallel to the central axis of an exemplary
- Fig. 2 three step-by-step cross-sectional views parallel and perpendicular to
- FIG. 3 shows a cross-sectional view parallel and perpendicular to the central axis of the blind rivet shown in FIG. 1, while the screw is removed from the sleeve according to the first embodiment of the method according to the invention
- FIG. 4 is a cross-sectional view parallel to the central axis of that shown in FIG.
- Embodiment of the method according to the invention is drilled out
- FIG. 5 is a cross-sectional view parallel to the central axis of that shown in FIG.
- FIG. 6 is a cross-sectional view parallel to the central axis of that shown in FIG.
- FIG. 8 is a cross-sectional view parallel to the central axis of that shown in FIG. 1
- FIG. 9 is a cross-sectional view parallel to the central axis of that shown in FIG. 1
- FIG. 10 is a cross-sectional view parallel to the central axis of that shown in FIG.
- FIG. 11-13 cross-sectional views perpendicular to the central axis of various
- FIG. 14 is a cross-sectional view parallel to the central axis of that shown in FIG. 1
- a blind rivet 2 is shown, which is attached in a workpiece arrangement 4, from which the blind rivet 2 can be removed in a particularly simple, faster and largely damage-free manner according to the embodiments of the method according to the invention described below.
- the workpiece arrangement 4 has a first surface 6 and an opposite second surface 8 as well as a hole 10 which connects the first surface 6 to the second surface 8.
- the blind rivet 2 which has a sleeve 12 and a screw 14 extending through the sleeve 12, is fastened in the hole 10. Both the sleeve 12 and the screw 14 have a circular cross section.
- the screw 14 is made of titanium and the sleeve 12 is made of steel.
- the sleeve 12 and the screw 14 arranged therein extend coaxially along a common central axis 16 between a first one End 18 on the side of the first surface 6 and a second end 20 on the side of the second surface 8 of the workpiece arrangement 4.
- the sleeve 12 viewed along the central axis 16 from the first to the second end 18, 20, initially has a sleeve head section 22 with a diameter which is greater than the diameter of the hole 10 in the workpiece arrangement 4 and in this way a counter-support on the side of the first End 18 or the first surface 6 forms. Subsequently, the sleeve 12 has a straight section 26, the diameter of which is constant when viewed along the central axis 16 and the outer diameter of which is smaller than or equal to the diameter of the hole 10.
- the sleeve 12 has a deformation section 30, which is formed from a deformable material and, in particular, deforms more easily than the threaded section 32, so that the deformation section 30 is initially deformed under axial load before the threaded section 32 would deform.
- the sleeve 12 then has a threaded section 32 with an internal thread 34.
- the straight section 26 is located in the hole 10 and rests with its outer surface on the hole wall.
- the deformation section 30 and the threaded section 32 protrude from the hole 10 on the side of the second surface 8.
- the screw 14 is arranged in the sleeve 12 in such a way that the internal thread 34 of the sleeve 12 engages in the external thread 42 of the screw 14 and the threaded section 32 is moved axially along the pin section 38 in the direction of the first end 18 by a rotational movement of the screw 14 can, wherein the deformation section 30 of the sleeve 12 is plastically deformed, in particular outward, is unfolded away from the central axis 16, so that the outer diameter of the deformed deformation section 30 is greater than the diameter of the hole 10 and the deformation section 30 in this way a counter bearing on the side of the second end 20 or the second surface 8, the on the second surface 8 rests.
- the blind rivet 2 is fastened in the hole 10 by turning the screw 14 on the screw head section 36, so that the workpiece arrangement 4 is held together.
- the sleeve 12 is first in the area of the threaded section 32 and / or the deformation section 30, i. on the side of the second surface 8 of the workpiece arrangement 4, cut with a cutting tool 46 in such a way that a cutting edge 48 of the cutting tool 46 is moved in the radial direction towards the central axis 16 against the sleeve 12.
- the sleeve 12 is cut with at least one cut, in the present embodiment with three cuts parallel to the central axis 16 and along the entire threaded section 32.
- the sleeve 12 bursts open along the cuts, so that the diameter increases and the internal thread 34 of the sleeve 12 disengages from the external thread 42 of the screw 14.
- FIGS. 2a-2c The cutting of the sleeve 12 according to the first embodiment of the method is shown in FIGS. 2a-2c shown step by step and takes place with a cutting tool 46, which has a blade 50 with a straight cutting edge 48, which is aligned parallel to the central axis 16 in the radial direction 52 to the central axis 16 against the sleeve 12 until the sleeve 12 is moved along the Cutting edge 48 is cut.
- the cutting tool 46 also has a support body 54 with a contact surface 56 for contact with the second surface 8 of the workpiece arrangement 4 and a bore 58 extending from the contact surface 56, which is adapted to the outer shape of the threaded section 32 and the deformation section 30, and with a from the bore 58 radially outwardly extending guide slot 60.
- the blade 50 is movably guided in such a way that the cutting edge 48 runs parallel to the central axis 62 of the bore 58 and can be moved into the bore 58 towards the central axis 62.
- two further cutting edges 66 are provided at a uniform distance from the guide slot 60 in the circumferential direction, which extend parallel to the central axis 62 and to which the threaded section 32 rests when it is in the bore 58 is located, so that the pressure exerted on the sleeve 12 by the cutting edge 48 of the blade 50 can also cut the sleeve 12 by the further cutting edges 66.
- the cutting tool 46 is arranged in such a way that the contact surface 56 rests on the second surface 8 of the workpiece arrangement 4 and the blind rivet 2 protruding from the hole 10 on the second surface 8 extends through the bore 58, so that the central axis 62 of the bore 58 runs coaxially with the central axis 16 of the screw 14.
- the blade 50 is then moved in the guide slot 60 in the direction of the central axis 16 towards the sleeve 12 until the cutting edge 48 cuts the sleeve 12, in particular the threaded section 32 of the sleeve 12, as shown in FIGS. 2a-2c can be seen.
- the sleeve 12 is also pressed against the two further cutting edges 66 and cut by these on the sides opposite the blade 50.
- the screw 14 is removed in the direction towards the side of the first surface 6 by striking the second end 20 of the screw 14. This is possible because the cutting of the sleeve 12 means that the internal thread 34 of the sleeve 12 is no longer or no longer fully engaged with the external thread 42 of the screw 14, so that the screw 14 can be released from the sleeve 12.
- the sleeve head section 22 is drilled out from the side of the first surface 6, as shown in FIG. 4.
- the drilling is carried out with a drill 68, the diameter of which corresponds to the outer diameter of the straight section 26 of the sleeve 12.
- a drill 68 the diameter of which corresponds to the outer diameter of the straight section 26 of the sleeve 12.
- the sleeve 12 with at least a section perpendicular to the central axis 16 at the transition between the deformation section 30 and the straight section 26 and as an extension of the second surface 8.
- the separated part of the sleeve 12, ie the deformation section 30 and the threaded section 32 can be unscrewed from the external thread 42 of the screw 14 and removed.
- the cutting of the sleeve 12 takes place with a cutting tool 46, which has two blades 50 with opposing cutting edges 48, which for cutting the sleeve 12 from opposite sides perpendicular to the central axis 16 aligned in the radial direction towards the central axis 16 towards the sleeve 12 to be moved until the sleeve 12 is cut along the cutting edges 48.
- the cutting edges 48 are moved between the second surface 8 and the deformation section 30.
- the blades 50 are concavely curved relative to the sleeve 12, the cutting edges 48 having the same radius of curvature which is greater than the inner radius of the sleeve 12.
- the cutting tool 46 has a support body 54 in the form of a frame with a contact surface 56 for contact with the second surface 8 of the workpiece arrangement 4 and an opening 70 extending from the contact surface 56 perpendicularly along a central axis 62 into which the opening 70 on the second Surface 8 protruding from the hole 10 part of the blind rivet 2, in particular the threaded portion 32 and the deformation portion 30 of the sleeve 12, and which is adapted to the outer shape of the threaded portion 32 of the sleeve 12 and the pin portion 38 of the screw 14.
- the two blades 50 with opposite cutting edges 48 are movably guided in such a way that the cutting edges 48 run perpendicular to the central axis 62 and can be moved from opposite sides in the radial direction towards the central axis 62.
- the cutting tool 46 is arranged on the workpiece arrangement 72 in such a way that the contact surface 56 rests against the second surface 8 and the blind rivet 2 extends through the opening 70, so that the central axis 16 runs coaxially with the central axis 62, after which the blades 50 are moved simultaneously from opposite sides along the second surface 8 towards the sleeve 12 and cut it at the transition between the deformation section 30 and the straight section 26.
- the cutting tool 46 being rotated about the central axis 16 between the cuts, for example by 90 °, so that the cuts are made at different angles.
- FIGs. 11 and 12 show embodiments of the cutting tool 46 with further, also possible radii of curvature and FIG. 13 shows an embodiment with straight cutting edges 48.
- the sleeve 12 can then by rotating the cutting tool 46 relative to the sleeve 12 around the Central axis 16 are cut continuously in the circumferential direction.
- the threaded section 32 and the deformation section 30 on the side of the second surface 8 are unscrewed from the external thread 42 of the screw 14 and removed.
- the deformation section 30 With the deformation section 30, the counter bearing on the side of the second surface 8 is thus also removed, so that the screw 14 and the remaining parts of the sleeve 12 on the opposite side of the first surface 6 can be removed.
- the sleeve 12 is similar to the second embodiment with at least one cut perpendicular to the central axis 16 at the transition between the deformation section 30 and the straight section 26 and cut as an extension of the second surface 8. According to the third embodiment, however, when the sleeve 12 is cut, the screw 14 running in the sleeve 12 is cut through at the same time. Then the remaining part of the screw 14 and the straight Section of the sleeve 12 and the sleeve head section 22 either simultaneously or one behind the other to the side of the first surface 6 removed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
- Dowels (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019112731.9A DE102019112731A1 (de) | 2019-05-15 | 2019-05-15 | Verfahren zur Demontage eines Blindniets in einer Werkstückanordnung |
PCT/EP2020/063224 WO2020229488A1 (de) | 2019-05-15 | 2020-05-12 | Verfahren zur demontage eines blindniets in einer werkstückanordnung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3969200A1 true EP3969200A1 (de) | 2022-03-23 |
Family
ID=70779688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20727172.7A Withdrawn EP3969200A1 (de) | 2019-05-15 | 2020-05-12 | Verfahren zur demontage eines blindniets in einer werkstückanordnung |
Country Status (5)
Country | Link |
---|---|
US (1) | US11801549B2 (de) |
EP (1) | EP3969200A1 (de) |
CN (1) | CN113853258A (de) |
DE (1) | DE102019112731A1 (de) |
WO (1) | WO2020229488A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019112731A1 (de) | 2019-05-15 | 2020-11-19 | Airbus Operations Gmbh | Verfahren zur Demontage eines Blindniets in einer Werkstückanordnung |
CN112677503B (zh) * | 2020-12-01 | 2022-11-29 | 东莞市成林自动化电子设备有限公司 | 温控器自动组装机的封面盖机构 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE750526C (de) * | 1938-04-27 | 1945-01-16 | Nietwerkzeug | |
US2836888A (en) * | 1956-11-23 | 1958-06-03 | Lockheed Aircraft Corp | Tools for removing the collars of fasteners |
SU627902A1 (ru) * | 1977-05-19 | 1978-10-15 | Предприятие П/Я М-5671 | Ручной пресс |
SU627901A1 (ru) | 1977-05-19 | 1978-10-15 | Всесоюзный Научно-Исследовательский И Проектный Институт Теплопроект | Ручной инструмент дл односторонней клепки |
GB8503777D0 (en) * | 1985-02-14 | 1985-03-20 | Allspeeds Holding Ltd | Nut splitter device |
JP4067725B2 (ja) * | 1998-11-20 | 2008-03-26 | 株式会社リコー | ブラインドリベットの分解装置及びその分解方法及びその分解方法を用いた生産システム |
JP4067726B2 (ja) * | 1998-11-27 | 2008-03-26 | 株式会社リコー | 締結部材の分解装置及びそのアタッチメント構造 |
US7555820B2 (en) * | 2005-01-24 | 2009-07-07 | The Boeing Company | Methods for removing blind fasteners |
US8387226B2 (en) * | 2008-12-08 | 2013-03-05 | The Boeing Company | Method and apparatus for removing blind fasteners |
DE102009053162A1 (de) * | 2009-11-03 | 2011-05-05 | Peter Schlegel | Werkzeug zum Entfernen von Nieten insbesondere Blindnieten |
DE102013223522A1 (de) * | 2013-11-19 | 2015-05-21 | Bayerische Motoren Werke Aktiengesellschaft | Blindnietvorrichtung und Verfahren zum Lösen einer durch eine Blindnietvorrichtung hergestellten formschlüssigen Verbindung |
DE102019112731A1 (de) | 2019-05-15 | 2020-11-19 | Airbus Operations Gmbh | Verfahren zur Demontage eines Blindniets in einer Werkstückanordnung |
-
2019
- 2019-05-15 DE DE102019112731.9A patent/DE102019112731A1/de not_active Withdrawn
-
2020
- 2020-05-12 CN CN202080036168.1A patent/CN113853258A/zh active Pending
- 2020-05-12 WO PCT/EP2020/063224 patent/WO2020229488A1/de unknown
- 2020-05-12 EP EP20727172.7A patent/EP3969200A1/de not_active Withdrawn
-
2021
- 2021-11-15 US US17/526,081 patent/US11801549B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102019112731A1 (de) | 2020-11-19 |
US20220134413A1 (en) | 2022-05-05 |
CN113853258A (zh) | 2021-12-28 |
WO2020229488A1 (de) | 2020-11-19 |
US11801549B2 (en) | 2023-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102006019405B4 (de) | Werkzeug zur Kaltexpansion von Löchern | |
EP1918596B1 (de) | Blindnietelement sowie Verwendung hierfür | |
DE2012966C3 (de) | Blindbefestigungsmittel und Verfahren zum Setzen desselben | |
DE60021730T2 (de) | Hochfester Blindbolzen über einen erweiterten Greifbereich gleichmäßig hoher Klemmkraft | |
DE1475216C3 (de) | Blindschraubverbindung | |
DE3035867C2 (de) | ||
DE19902461B4 (de) | Mutter mit T-förmigem Querschnitt | |
DE3420360C2 (de) | Verwendung eines mit einem Gewinde versehenen Befestigungselements sowie Verfahren zum Setzen desselben | |
DE2008035B2 (de) | Blindniet | |
DE1813276C3 (de) | Blindniet und Verfahren zur Herstellung desselbea | |
EP2558230B1 (de) | Expansionskopf für aufweitwerkzeuge und diesen umfassendes expansionswerkzeug | |
DE3407464A1 (de) | Blindnietanordnung | |
DE1115081B (de) | Befestigungsvorrichtung | |
DE69608002T2 (de) | Verfahren zum Befestigen von Bauteilen einer Zusammenstellung | |
DE1116482B (de) | Niet zum Blindnieten | |
WO2020229488A1 (de) | Verfahren zur demontage eines blindniets in einer werkstückanordnung | |
EP2594812A1 (de) | Zweiteilige Schraube | |
EP2224143B1 (de) | Mutter, Schraubverbindung, Profilverbindung sowie Verfahren zum Herstellen einer Mutter | |
DE3102939A1 (de) | "einpressmutter" | |
DE102015115548A1 (de) | Stabmesserkopf | |
DE102007011617A1 (de) | Verfahren zur Befestigung einer Gewindebuchse in einer Platte sowie das Werkzeug hierzu | |
WO2020254618A1 (de) | Verfahren zur demontage eines zweiteiligen verbinders in einer werkstückanordnung | |
DE102017100331B4 (de) | Befestigungsanordnung zum Verbinden von Bauteilen, Bauteilverbindung und Scherenhubtisch | |
WO2015017942A1 (de) | Verfahren zum verbinden mehrerer plattenförmiger materialabschnitte mittels einer hohlniete | |
DE3246625A1 (de) | Hohlniet |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20211210 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20231201 |