Riveting device comprising a spring element of an integrated threaded spindle

Abstract

The invention relates to a riveting device (1) comprising a riveting tool (10) and a drive device (30) for actuating the riveting tool (10). The riveting tool (10) has a mouth piece (11), a mandrel receptacle (12) which can be moved along an operative axis (W) relative to the mouth piece (11), and a spring element (15) which exerts a force into the mandrel receptacle (12). The drive device (30) has a threaded spindle (33) which has a movement thread (33.3) and which is operatively connected to the mandrel receptacle (12) and is designed to be moved along the operative axis (W). The threaded spindle (33) has a front end (33.1) facing the mandrel receptacle (12) and a rear end (33.2) lying opposite thereto and is designed as a hollow spindle with a passage (40) which runs in the direction of the longitudinal extension of the spindle and which has a rear longitudinal section (40.2) extending to the rear end (33.2) of the threaded spindle (33) and a front longitudinal section (40.1) lying in front of the rear longitudinal section. The threaded spindle (33) has a securing structure (33.4), which is produced by a material recess, in the region of the front end (33.1), said securing structure being used to directly or indirectly connect the threaded spindle (33) to the mandrel receptacle (12) in a non-displaceable manner. In order to improve the component stability, the front longitudinal section (40.1) of the passage (40) has a cross-sectional surface area which is smaller than the cross-sectional surface area of the rear longitudinal section (40.2), wherein the spring element (15) is arranged in the rear longitudinal section (40.2).

Description

[0001] Riveting tool with spring element integrated threaded spindle

[0002] The present disclosure relates to a riveting tool with a spring element integrated threaded spindle and in particular to a blind rivet setting tool, a blind rivet nut setting tool and a blind rivet screw setting tool.

[0003] Riveting tools are typically used to create a riveted joint between two or more materials, such as sheet metal, at a junction where the materials lie against one another. To create the riveted joint, a plastically deformable, usually cylindrical connecting element, generally referred to as a rivet, is used. The rivet usually has a prefabricated setting head at one end. To create the riveted joint, the rivet is inserted into a connecting hole at the joint up to the setting head and then the other end of the rivet is plastically deformed into a closing head.

[0004] Riveting tools can also be used to add threads to thin-walled components. Rivet nuts or rivet bolts are used for this purpose, combining a rivet with a threaded element. The rivet nuts or rivet bolts are inserted into a prefabricated rivet hole in the component, and then a portion of the rivet is plastically formed into a closing head.

[0005] Conventional riveting tools usually comprise a riveting tool which is designed to effect a plastic deformation which forms the closing head. To actuate the riveting tool, the riveting tools have a drive device which is often electromechanical and comprises, for example, an electric motor and a spindle gear designed as a ball screw drive. Such a riveting tool is described in EP 0 670 199 A1, which is referred to therein as a setting tool. The riveting tool is designed for setting blind rivet nuts and is designed to subject the blind rivet nut to a compression which produces a closing head by exerting a pulling movement on a threaded rivet mandrel.

[0006] Riveting tools often feature a spring element whose force is used to press the clamping jaws of a chuck housing against a rivet mandrel accommodated therein, for example, a blind rivet to be set, and thus axially fix the rivet mandrel in the chuck housing. The chuck housing is a component of the riveting tool and, during a riveting process, is moved away from a nosepiece by an electric motor-driven threaded spindle, against which the setting head of the blind rivet rests.

[0007] In some riveting tools, the threaded spindle is used to accommodate the spring element, whereby the spring element is accommodated inside the threaded spindle and is supported on the one hand against the threaded spindle and on the other hand acts on the clamping jaws via a pressing part. Such a riveting tool is described in EP 0 527 414 A1. There, the spring element is introduced into the threaded spindle from the side facing the chuck housing and is located on a tubular extension of the pressing part, which extends to the rear end of the threaded spindle. The threaded spindle itself has an external thread at its front end, which is used for inserting the spring element, and onto which the chuck housing is screwed. The front end area of ​​the threaded spindle therefore has a thinner wall than other areas of the threaded spindle which are in the flow of force when the riveting tool is operated.In this respect, a higher component load occurs precisely there during operation of the riveting device.

[0008] In the course of continuous development, there is a need to improve the component durability of a riveting tool of the type mentioned above.

[0009] One embodiment of a basic riveting device comprises a riveting tool and a drive device for actuating the riveting tool. For example, the riveting device, in particular the riveting tool, is suitable for blind riveting, in which the riveting process is carried out from one side of the material to be provided with a blind rivet using a rivet mandrel. Instead of a blind rivet, a blind rivet nut or a blind rivet screw can also be used.

[0010] The riveting tool preferably has a mouthpiece and a mandrel holder which is movable relative to the mouthpiece along or in the direction of an effective axis. The riveting tool preferably also has a spring element which acts with a force, for example, into the mandrel holder. In particular, the spring element acts with a force along the effective axis, i.e. axially. For example, the mandrel holder comprises a chuck housing which is movable relative to the mouthpiece along or in the direction of the effective axis and at least one clamping element, in particular a clamping jaw, which is movable in the chuck housing along a clamping path. For example, the spring element is designed to apply a force to the at least one clamping element into the chuck housing.

[0011] The drive device preferably has a threaded spindle, preferably having a movement thread, which is operatively connected to the mandrel holder and is particularly designed to be moved along the operative axis. The spring element is preferably accommodated in the threaded spindle or the spring element is integrated into the threaded spindle. Such an internal spring element promotes a compact design of the riveting device, particularly axially with respect to the operative axis, since overall length can be saved.

[0012] In particular, the threaded spindle has a front end facing the mandrel holder and an opposite rear end. In particular, the threaded spindle is designed as a hollow spindle with a passage running in the direction of its longitudinal extent, for example in order to provide a mandrel disposal path. In particular, the passage has a rear longitudinal section extending as far as the rear end of the threaded spindle and a front longitudinal section in front of it. In particular, the threaded spindle has, in the region of the front end, a fastening structure preferably produced by a material recess, by means of which the threaded spindle is connected to the mandrel holder in a displacement-proof manner, for example directly or indirectly via an intermediate element.

[0013] An improved component durability is achieved by a riveting tool design in which the front longitudinal section of the threaded spindle passage has a cross-sectional area that is smaller than the cross-sectional area of ​​the rear longitudinal section. The passage designed in this manner counteracts any weakening of the threaded spindle.

[0014] The larger cross-sectional area of ​​the passage in the rear longitudinal section also provides sufficient space to accommodate the spring element. A further embodiment therefore provides for the spring element to be arranged in the rear longitudinal section of the threaded spindle passage. Because the rear longitudinal section extends to the rear end of the threaded spindle, simple assembly is facilitated, since the spring element can be inserted into the passage via the rear end of the threaded spindle.

[0015] To enable the force of the spring element to act in the direction of the mandrel holder, according to a further embodiment, the spring element is supported in the direction of the effective axis in the region of the rear longitudinal section, for example, on the rear side of the threaded spindle, in particular directly or via a counterholder. If a counterholder is provided, the counterholder is, for example, screwed into the passage at the rear end of the threaded spindle.

[0016] The improved riveting tool can be designed such that the front longitudinal section of the passage extends to the front end of the threaded spindle. The passage formed in this manner counteracts any weakening of the threaded spindle component in the region of its front end, where, for example, the fastening structure for connecting the mandrel holder is located.

[0017] The fastening structure of the threaded spindle may comprise or be a thread, in particular an external thread. Due to the smaller cross-sectional area of ​​the passage in the region of the front end of the threaded spindle, i.e., in the region of the fastening structure, any component weakening caused by the thread is particularly counteracted.

[0018] The improved riveting tool can further be designed such that the front longitudinal section of the passage and the moving thread of the threaded spindle overlap each other in an overlapping section. In the overlapping region, the passage thus has a smaller cross-sectional area. This also improves component durability.

[0019] In one embodiment, the threaded spindle engages with a spindle nut of a spindle gear, which is, for example, a component of the drive device. In this case, the improved riveting device can be designed such that, in an initial state prior to actuation of the riveting tool, the spring element is arranged axially in the threaded spindle such that the spindle nut and the spring element overlap or an end of the spindle nut facing the riveting tool lies in front of an end of the spring element facing the riveting tool. This promotes a compact design in the axial direction with respect to the effective axis.

[0020] In a further embodiment, a pressing part for transmitting the force of the spring element is slidably received in the front longitudinal section of the threaded spindle passage. In this case, the improved riveting tool can be designed such that the pressing part is formed as a hollow body with a passage running in the direction of its longitudinal extent, the diameter of which is larger than the diameter of a rivet mandrel usable or used by the riveting tool. As a result, any remainder of a rivet mandrel remaining from a riveting process can be removed from the riveting tool via the passage of the pressing part.

[0021] In a further embodiment, the spring element has a passage extending in the direction of the longitudinal axis of the threaded spindle, the diameter of which is larger than the diameter of a rivet mandrel usable or used by the riveting tool. For this purpose, it is advantageous for the spring element to be designed as a compression spring. This measure also aims to be able to remove any remaining rivet mandrel from a riveting process from the riveting tool.

[0022] Aiming in the same direction is the measure that, according to a further embodiment, the above-described counterholder has a passage extending in the direction of the longitudinal axis of the threaded spindle, the diameter of which passage being larger than the diameter of a rivet mandrel usable or used by the riveting tool. A mandrel disposal path can thus be realized through the passage of the threaded spindle and / or the passage of the pressing part and / or the passage of the counterholder.

[0023] For example, the diameter of the passage of the spring element and / or the diameter of the passage of the counterholder is dimensioned so large that an intermediate sleeve or an intermediate tube can be introduced into the passage of the spring element or the counterholder and the inner diameter of the intermediate sleeve or the intermediate tube is, for example, larger than the diameter of the rivet mandrel usable by the riveting tool. The intermediate sleeve or the intermediate tube can be provided in order to keep the cross-section of the mandrel disposal path constant over its preferably entire length and / or in order to adapt the cross-section of the mandrel disposal path to a specific mandrel diameter of the rivet mandrel used.

[0024] In a further embodiment, the threaded spindle is a component of an electromechanical drive device, which comprises an electric motor for driving the threaded spindle. For example, the threaded spindle is a ball screw and is, for example, a component of a ball screw drive.

[0025] In a further embodiment, the riveting tool is designed as a hand-held riveting tool and comprises a handle which, for example, has a longitudinal extension transverse to the effective axis. For example, the handle is formed on a tool housing which accommodates the drive device, in particular the threaded spindle, in particular is molded thereon. The handle allows the riveting tool to be held in the hand or guided manually. In particular, the handle enables the riveting tool to be manually applied to a location to be riveted.

[0026] According to one aspect, a blind rivet setting tool is proposed. The blind rivet setting tool comprises the riveting tool described above and has a rivet mandrel of a blind rivet to be set, which is received in its mandrel holder.

[0027] According to a further aspect, a blind rivet nut setting tool is proposed. The blind rivet nut setting tool comprises the riveting tool described above and has a threaded rivet mandrel accommodated in its mandrel holder for a blind rivet nut to be set.

[0028] According to a further aspect, a blind rivet screw setting tool is proposed. The blind rivet screw setting tool comprises the riveting tool described above and has a threaded rivet mandrel of a blind rivet screw to be set, which is accommodated in its mandrel holder. Further details and features will become apparent from the following description of several embodiments with reference to the drawings.

[0029] Fig. 1 shows an exemplary embodiment of a riveting device with a riveting tool and a drive device for actuating the riveting tool in a schematic sectional view,

[0030] Fig. 2 shows an enlarged section of the riveting device of Figure 1 in the area of ​​the riveting tool and a spindle gear connected thereto in a schematic sectional view,

[0031] Fig. 3 shows a possible embodiment of a blind rivet setting tool with the exemplary riveting tool of Figure 1 in a schematic partial representation,

[0032] Fig. 4 shows a possible embodiment of a blind rivet nut setting tool with the exemplary riveting tool of Figure 1 in a schematic partial representation, and

[0033] Fig. 5 shows a possible embodiment of a blind rivet screw setting tool with the exemplary riveting tool of Figure 1 in a schematic partial representation.

[0034] Figure 1 shows the structure of an exemplary embodiment of a riveting tool 1, which is also referred to in specialist circles as a setting tool. The exemplary riveting tool 1 is suitable for attaching rivets using the blind riveting method and is therefore designed for use with blind rivets.

[0035] The exemplary riveting device 1 comprises a riveting tool 10 and a drive device 30 for actuating the riveting tool 10. The riveting tool 10 is preferably accommodated in a tool housing 60. The drive device 30 is preferably accommodated in a device housing 50. The tool housing 60 is preferably a metal housing. The device housing 50 is preferably a plastic housing.

[0036] The drive device 30 is preferably an electromechanical drive device. The electromechanical drive device 30 comprises, for example, an electric motor 31 with a rotatable output shaft 31.1 and preferably a spindle gear 32 which can be driven by the electric motor 31. The spindle gear 32 is preferably designed to convert a rotary drive movement emanating from the output shaft 31.1 into a translatory drive movement acting along an effective axis W for actuating the riveting tool 10. The spindle gear 32 can be a ball screw drive.

[0037] Figure 2 shows an enlarged section of the exemplary riveting device 1 in the region of the riveting tool 10 and the spindle gear 32. As can be seen in particular therefrom, the riveting tool 10 can comprise a mouthpiece 11 and a mandrel holder 12 which is movable relative to the mouthpiece 11 in the direction of an effective axis W. For example, the mandrel holder 12 has a chuck housing 13 and at least one, preferably several clamping elements 14, 14', in particular clamping jaws, which are movable in the chuck housing 13 along a clamping path. Preferably, the mouthpiece 11 and / or the mandrel holder 12 and / or the chuck housing 13 and / or the clamping elements 14, 14' are a metal part.

[0038] The mouthpiece 11 serves, for example, to receive a rivet (not shown in Figures 1 and 2) to be set, in particular a blind rivet, and preferably has a through-hole 11.1 for inserting the rivet mandrel of the rivet therein. The mandrel receptacle 12 serves, for example, to fix the rivet mandrel so that a displacement-proof connection is created between the received rivet mandrel and the mandrel receptacle 12. This can be done, for example, via the chuck housing 13 with the clamping elements 14, 14' arranged movably therein, by means of which the rivet mandrel is fixed, in particular clamped, in the chuck housing 13.

[0039] Preferably, a spring element 15 is provided which acts with a force in the mandrel receptacle 12. The force of the spring element 15 can be used as a pretensioning force by which the fixing of the rivet mandrel in the mandrel receptacle 12 is effected or at least assisted. For example, the spring element 15 is provided in order to apply a spring force to the clamping elements 14, 14' into the chuck housing 13. As a result, the clamping elements 14, 14' are pressed into the clamping position against a rivet mandrel, for example a blind rivet, which is inserted into the chuck housing 13 via the through hole 11.1 of the mouthpiece 11. For example, the spring element 15 is a compression spring.

[0040] The drive device 30 can actuate the riveting tool 10 in such a way that the mandrel holder 12 or the chuck housing 13, together with the rivet mandrel received therein, is moved away from the mouthpiece 11 in the direction of the effective axis W. This occurs, for example, in that the drive device 30 pulls the mandrel holder 12 or the chuck housing 13 away from the mouthpiece 11. This known mode of operation and the blind riveting that can be carried out with it are described in more detail in the document EP 0 116 954 A2, to which reference is hereby made for the purpose of completing and supplementing the present disclosure, with the note that the document may assign a meaning to identical terms which differs from the present meaning.

[0041] Preferably, the mouthpiece 11 is fastened to the tool housing 60, for example, screwed thereto. Preferably, the mandrel receptacle 12, in particular the chuck housing 13, is accommodated in the tool housing 60 so as to be movable in the direction of the effective axis W. For example, the tool housing 60 is tubular. For example, the mouthpiece 11 is fastened to one end of the tool housing 60, and the opposite end faces the device housing 50.

[0042] The spindle gear 32 is preferably arranged in the device housing 50. The spindle gear 32 preferably comprises a threaded spindle 33 with a movement thread 33.3 and a spindle nut 34 which engages or can be brought into engagement therewith. The threaded spindle 33 and the spindle nut 34 are preferably arranged concentrically to one another with respect to a gear axis, in particular the gear axis of the spindle gear 32. The output shaft 31.1 of the electric motor 31 is preferably arranged axially parallel to the gear axis. The gear axis preferably lies on the effective axis W.

[0043] For example, the threaded spindle 33 and the spindle nut 34 are configured such that the spindle nut 34 is the gear element driven or drivable by the electric motor 31, and the threaded spindle 33 is used to execute the translational drive movement to actuate the riveting tool 10. For example, the spindle nut 34 is rotatably mounted in the device housing 50, and the threaded spindle 33 is secured against rotation relative to the device housing 50.

[0044] For example, the spindle nut 34 is rotatably mounted in the device housing 50 in the radial direction with respect to the gear axis or the effective axis W via at least one, preferably two radial bearings 35, 35'. For example, the radial bearings 35, 35' are arranged at an axial distance from one another. For example, a drive point is located between the radial bearings 35, 35', via which drive point the electric motor 31 is operatively connected to the spindle nut 34. For example, the radial bearings 35, 35' are a rolling bearing, in particular a deep groove ball bearing.

[0045] For example, the spindle nut 34 is mounted axially relative to the gear axis or the effective axis W via an axial bearing 36 in a support ring 39, which serves, for example, as a bearing housing, wherein the support ring 39 is supported in the axial direction on the mouthpiece 11 via the tool housing 60. The tool housing 60 itself is held, in particular loosely held, on the support ring 39, for example via a holding structure 51, such as, for example, an annular cover element.

[0046] The support ring 39 is preferably designed to be deformation-resistant or pressure-resistant. For example, the support ring 39 is a metal part. For example, the support ring 39 is a separate component. For example, the axial bearing 36 is an axial roller bearing. In principle, the axial bearing 36 can also be a needle bearing.

[0047] As can be seen from Figure 1, for example, at least one, preferably two reduction stages 37, 37' can be interposed between the electric motor 31 and the spindle gear 32. For example, the reduction stages

[0048] 37 , 37 ' are connected in series in the power flow. For example, the reduction stages 37 , 37 ' use a common intermediate shaft

[0049] 38 . For example, at least one of the reduction stages 37, 37 ' is a spur gear stage and the associated gear elements are spur gears. The device housing 50 can also be used for the radial mounting of the reduction stages 37, 37 '. The device housing 50 can also be used for the radial mounting of the electric motor 31. With regard to the mounting of the spindle gear 32, in particular of the spindle nut 34, the mounting of the reduction stages 37, 37 ', in particular of the common intermediate shaft 38, and the mounting of the electric motor 31, for the purpose of completing and supplementing the present disclosure, reference is made to the German patent application with the official file number DE 10 2022 116 406 . 3 with the note that the patent application may assign a meaning to identical terms which differs from the present meaning.

[0050] As can be seen in particular from Figure 2, the threaded spindle 33 has a front end 33.1 facing the mandrel holder 12, in particular the chuck housing 13, and an opposite rear end 33.2. The threaded spindle 33 preferably has a fastening structure 33.4 in the region of its front end 33.1, via which fastening structure the threaded spindle 33 is connected directly or indirectly to the mandrel holder 12, in particular the chuck housing 13, in a displacement-proof manner. For example, the fastening structure 33.4 is produced by material recessing or other post-machining or finishing of the threaded spindle 33. For example, the fastening structure 33.4 is a thread, in particular an external thread.

[0051] The threaded spindle 33 is preferably designed as a hollow spindle with a passage 40 running in the direction of its longitudinal extent. The passage 40 makes it possible to remove any residue of a rivet mandrel remaining from a riveting process from the riveting tool 10. For example, the passage 40 opens at the rear end 33.2 of the threaded spindle 33 into a removal sleeve 42, which in turn opens into a collecting container 4 (Figure 1). For example, the removal sleeve 42 is connected to the device housing 50 in a housing-fixed manner. For example, the removal sleeve 42 is inserted with one end into the passage 40 of the threaded spindle 33, in particular at the rear end 33.2. For example, a mandrel disposal path is realized in this way via the threaded spindle 33, the collecting container 4 serving as a collector for mandrel residues.

[0052] Preferably, therefore, the passage 40 of the threaded spindle 33 has a diameter that is larger than the diameter of a rivet mandrel that can be used or is used by the riveting tool 10. In order to be as compact as possible in the radial direction with respect to the effective axis W, the diameter of the passage 40 of the threaded spindle 33 is preferably only slightly larger than the diameter of the rivet mandrel, so that jamming of the rivet mandrel or other jamming of the rivet mandrel in the passage 40 of the threaded spindle 33 is avoided.

[0053] In the exemplary riveting tool 1, the passage 40 is additionally used to accommodate the spring element 15. For example, the spring element 15 is arranged entirely within the threaded spindle 33, in particular within the passage 40. This improves the compactness of the riveting tool 1, for example, compared to a design with a spring element located outside a threaded spindle. The internal spring element 15 thus allows for a reduction in overall length.

[0054] In order to accommodate the spring element 15 in the passage 40 of the threaded spindle 33, it is provided, for example, that the passage 40 has a rear longitudinal section 40.2 extending to the rear end 33.2 of the threaded spindle 33 and a front longitudinal section 40.1 in front of it, and that the front longitudinal section 40.1 has a cross-sectional area which is smaller than the cross-sectional area of ​​the rear longitudinal section 40.2. The cross-sectional area of ​​the rear longitudinal section 40.2 is therefore larger than the cross-sectional area of ​​the front longitudinal section 40.1.

[0055] This design of the passage 40 is, for example, deliberately chosen to accommodate the greater radial extent of the spring element 15 compared to the radial extent of a rivet mandrel. For this reason, the cross-sectional area of ​​one longitudinal section 40.2 of the passage 40 is larger than the cross-sectional area of ​​the other longitudinal section 40.1 and, for this reason, the spring element 15 is preferably arranged in the longitudinal section 40.2 with the larger cross-sectional area. Secondly, the longitudinal section with the larger cross-sectional area is the rear longitudinal section 40.2 of the passage 40. Compared to the front longitudinal section 40.1, this longitudinal section is not additionally weakened by the fastening structure 33.4, in particular the fastening thread and, for example, an associated undercut. The front longitudinal section 40.1 of the passage 40 preferably extends to the front end 33. 1 of the threaded spindle 33 .In this way, a weakening of the threaded spindle 33 in the region of the fastening structure 33. 4 is counteracted. For example, the front longitudinal section 40. 1 of the passage 40 extends so far toward the rear end 33. 2 of the threaded spindle 33 that the front longitudinal section 40. 1 and the movement thread 33. 3 of the threaded spindle 33 overlap each other in an overlap section 41.

[0056] For example, in an initial state prior to actuation of the riveting tool 10, the spring element 15 is arranged axially in the threaded spindle 33 such that the spindle nut 34 and the spring element 15 overlap or an end of the spindle nut 34 facing the riveting tool 10 is located in front of an end of the spring element 15 facing the riveting tool 10. To transmit the force of the spring element 15 in the direction of the mandrel holder 12, a pressing part 16 is provided, for example. For example, the pressing part 16 is at least partially slidably received in the front longitudinal section 40. 1 of the passage 40. For example, the spring element 15 is supported with its rear end on the threaded spindle 33. In the exemplary riveting tool 1, this is done, for example, via a counterholder 17. The counterholder 17 is, for example, attached to the threaded spindle 33, in particular at the rear end 33.2 of the threaded spindle 33, for example screwed into the passage 40 of the threaded spindle 33.

[0057] The spring element 15 preferably has a passage 15.1 running in the direction of the longitudinal axis of the threaded spindle 33, the diameter of which passage is greater than the diameter of a rivet mandrel that can be used by the riveting tool 10. The pressing part 16 is preferably designed as a preferably elongated hollow body with a passage 16.1 running in the direction of its longitudinal extent, the diameter of which is greater than the diameter of a rivet mandrel that can be used by the riveting tool 10. The counter-holder 17 is preferably designed as a preferably elongated hollow body with a passage 17.1 running in the direction of its longitudinal extent, the diameter of which is greater than the diameter of a rivet mandrel that can be used by the riveting tool 10. In this way, it is possible to implement a mandrel disposal path, wherein the collecting container 4 can be used as a collector for mandrel residues. For example, the diameter of the passage 15.1 of the spring element 15 and / or the diameter of the passage 17 . 1 of the counter-holder 17 is dimensioned so large that an intermediate sleeve or intermediate tube (not shown in Figures 1 and 2) can be introduced into the passage 15 . 1 of the spring element 15 or into the passage 17 . 1 of the counter-holder 17 and the inner diameter of the intermediate sleeve or intermediate tube is, for example, larger than the diameter of the rivet mandrel that can be used by the exemplary riveting tool. The intermediate sleeve or intermediate tube can be provided in order to keep the cross-section of the mandrel disposal path constant over its preferably entire length and / or in order to adapt the cross-section of the mandrel disposal path to a specific mandrel diameter of the rivet mandrel used.

[0058] The riveting tool 1 can be a hand-held riveting tool. The hand-held riveting tool 1 has, for example, a gripping surface 2.1, which can be at least partially formed on the tool housing 50. For example, the hand-held riveting tool 1 has a handle part 2, which is at least partially formed by the tool housing 50. The gripping surface 2.1 or the handle part 2 enables the riveting tool 1 to be held in the hand when it is applied to a workpiece to set a blind rivet. The riveting process as such then takes place by actuating the riveting tool 10 via the drive device 30.

[0059] To supply electrical energy to the drive device 30, a preferably replaceable electrical energy storage device, such as a rechargeable battery 3, can be provided, which is arranged, for example, in the region of an end of the handle part 2 facing away from the riveting tool 10. In this respect, the riveting tool 1 can be a battery-powered device.

[0060] Figure 3 shows an example of a possible embodiment of a blind rivet setting tool 100. The blind rivet setting tool 100 has the structure of the exemplary riveting tool 1 described above, wherein in Figure 3, for the sake of simplicity, only a section of the exemplary riveting tool 1 in the area of ​​the riveting tool 10 is shown. In the blind rivet setting tool 100, a rivet mandrel 120 of a blind rivet 110 is inserted into the mouthpiece 11 and received in the mandrel receptacle 12, in particular the chuck housing 13, and fixed in the axial direction, for example by the at least one clamping element 14 or 14'. This is brought about, for example, by the spring element 15 of the riveting tool 1 (Figure 2), which uses its spring force via the pressing part 16 to press on the at least one clamping element 14 or 14'. 14 ' acts , whereby the at least one clamping element 14 or 14 ' is held in the clamping position against the rivet mandrel 120 .Figure 3 shows the blind rivet 110 in the state before riveting, in which the rivet body 130 of the blind rivet 110 is still in its initial state.

[0061] Figure 4 shows an example of a possible embodiment of a blind rivet nut setting tool 200. The blind rivet nut setting tool 200 has the structure of the exemplary riveting tool 1 described above, wherein the mandrel holder 12 and the pressing part 16 are modified with regard to a rivet mandrel for a blind rivet nut and the rivet mandrel is a threaded rivet mandrel. For example, the pressing part 16 there has a function with regard to spindleing the threaded rivet mandrel into the blind rivet nut. For the sake of simplicity, Figure 4 only shows a section of the riveting tool 1 in the area of ​​the riveting tool 10. In the blind rivet nut setting tool 200, a threaded rivet mandrel 220 for a blind rivet nut 210 is received in the mandrel holder 12. Figure 4 shows the blind rivet nut 210 in the state before riveting, in which the rivet body 230 of the blind rivet nut 210 is still in its initial state.

[0062] For example, in the exemplary blind rivet nut setting tool 200, the pressing part 16 is inserted into a receptacle of the threaded rivet mandrel 220 and forms a positive, rotationally fixed connection with the threaded rivet mandrel 220 via the receptacle. For example, the force of the spring element 15 of the riveting tool 1 (Figure 2), which acts axially on the pressing part 16, holds the pressing part 16 in the receptacle of the threaded rivet mandrel 220.

[0063] Figure 5 shows an example of a possible embodiment of a blind rivet screw setting tool 300. The blind rivet screw setting tool 300 has the structure of the exemplary riveting tool 1 described above, wherein the mandrel holder 12 and the pressing part 16 are modified with regard to a rivet mandrel of a blind rivet screw and the rivet mandrel is a threaded rivet mandrel. For example, the pressing part 16 there has a function with regard to spindles of the threaded rivet mandrel into a screw-in part of the mandrel holder 12. For the sake of simplicity, Figure 5 only shows a section of the riveting tool 1 in the area of ​​the riveting tool 10. In the blind rivet screw setting tool 300, a threaded rivet mandrel 320 of a blind rivet screw 310 is received in the mandrel holder 12 via the screw-in part. Figure 5 shows the blind rivet screw 310 in the state before riveting, in which the rivet body 330 of the blind rivet screw 310 is still in its initial state.

[0064] For example, in the exemplary blind rivet screw setting tool 300, the pressing part 16 acts on the screw-in part. In particular, the pressing part 16 is inserted into a receptacle of the screw-in part and forms a positive, rotationally fixed connection with the screw-in part via the receptacle. For example, the force of the spring element 15 of the riveting tool 1 (Figure 2), which acts axially on the pressing part 16, holds the pressing part 16 in the receptacle of the screw-in part.

[0065] List of reference symbols

[0066] 1 riveting tool

[0067] 2 handle part

[0068] 2.1 Grip surface

[0069] 3 accumulator

[0070] 4 collecting containers

[0071] 10 riveting tools

[0072] 11 Mouthpiece

[0073] 11.1 Through hole

[0074] 12 mandrel holder

[0075] 13 Feed housing

[0076] 14 clamping element

[0077] 14 ' clamping element

[0078] 15 Spring element

[0079] 15.1 Passage

[0080] 16 Press part

[0081] 16.1 Passage

[0082] 17 Counterholder

[0083] 17.1 Passage

[0084] 30 Drive device

[0085] 31 electric motor

[0086] 31.1 Output shaft

[0087] 32 spindle gears

[0088] 33 threaded spindle

[0089] 33.1 front end

[0090] 33.2 rear end

[0091] 33.3 Motion thread

[0092] 33.4 Mounting structure

[0093] 34 spindle nut

[0094] 35 radial bearings

[0095] 35 ' radial bearing

[0096] 36 thrust bearings

[0097] 37 reduction stage

[0098] 37 ' reduction stage

[0099] 38 Intermediate shaft

[0100] 39 Support ring

[0101] 40 passage

[0102] 40.1 front longitudinal section 40.2 rear longitudinal section

[0103] 41 Overlap section

[0104] 42 discharge sleeve

[0105] 42 . 1 passage

[0106] 50 device housings

[0107] 51 Support structure

[0108] 60 tool housings

[0109] 100 blind rivet setting tool

[0110] 110 blind rivet

[0111] 120 rivet mandrel

[0112] 200 blind rivet nut setting tool

[0113] 210 blind rivet nut

[0114] 220 threaded rivet mandrel

[0115] 300 blind rivet screw setting tool

[0116] 310 blind rivet screw

[0117] 320 threaded rivet mandrel

[0118] W effective axis

Claims

Patent claims 1. Riveting device (1), comprising a riveting tool (10) with a mouthpiece (11), a mandrel holder (12) which is movable relative to the mouthpiece (11) along an effective axis (W) and with a spring element (15) which acts with a force into the mandrel holder (12), a drive device (30) for actuating the riveting tool (10) with a threaded spindle (33) which has a movement thread (33.3) and receives the spring element (15), which is operatively connected to the mandrel holder (12) and is designed to be moved along the effective axis (W), wherein the threaded spindle (33) has a front end (33.1) facing the mandrel holder (12) and an opposite rear end (33.2) and is designed as a hollow spindle with a passage (40) running in the direction of its longitudinal extent, which has a rear longitudinal section extending to the rear end (33.2) of the threaded spindle (33) (40.2) and a front longitudinal section in front of it (40.1), and wherein in the region of the front end (33.1) the threaded spindle (33) has a fastening structure (33.4) produced by a material recess, via which the threaded spindle (33) is connected directly or indirectly to the mandrel receptacle (12) in a displacement-proof manner, characterized in that the front longitudinal section (40.1) of the passage (40) has a cross-sectional area which, compared to the cross-sectional area of ​​the rear longitudinal section (40.2) is smaller, and the spring element (15) is arranged in the rear longitudinal section (40.2).

2. Riveting tool according to claim 1, wherein the spring element (15) is supported in the region of the rear longitudinal section (40.2) in the direction of the effective axis (W) on the threaded spindle (33), in particular directly or via a counter-holder (17).

3. Riveting tool according to claim 1 or 2, wherein the front longitudinal section (40.1) of the passage (40) extends to the front end (33.1) of the threaded spindle (33).

4. Riveting tool according to one of the preceding claims, wherein the fastening structure (33.4) of the threaded spindle (33) comprises or is a thread, in particular an external thread.

5. Riveting tool according to one of the preceding claims, wherein the front longitudinal section (40.1) of the passage (40) and the movement thread (33.3) of the threaded spindle (33) overlap each other in an overlap section (41).

6. Riveting tool according to one of the preceding claims, wherein the threaded spindle (33) is in engagement with a spindle nut (34) of a spindle gear (32) and in an initial state prior to actuation of the riveting tool (10), the spring element (15) is arranged axially in the threaded spindle (33) in such a way that the spindle nut (34) and the spring element (15) overlap or an end of the spindle nut (34) facing the riveting tool (10) lies in front of an end of the spring element (15) facing the riveting tool (10).

7. Riveting device according to one of the preceding claims, wherein in the front longitudinal section (40.1) of the passage (40) a pressing part (16) for transmitting the force of the spring element (15) is slidably received, wherein the pressing part (16) is designed as a hollow body with a passage (16.1) running in the direction of its longitudinal extent, the diameter of which passage is larger than the diameter of a rivet mandrel usable by the riveting tool (10).

8. Riveting tool according to one of the preceding claims, wherein the spring element (15) has a passage (15.1) extending in the direction of the longitudinal axis of the threaded spindle (33), the diameter of which passage is larger than the diameter of a rivet mandrel usable by the riveting tool (10).

9. Riveting tool according to one of the preceding claims, wherein the spring element (15) is a compression spring.

10. Riveting tool according to one of the preceding claims, wherein the threaded spindle (33) is a ball screw spindle.

11. Riveting tool according to one of the preceding claims, wherein the threaded spindle (33) is a component of an electromechanical drive device (30) which comprises an electric motor (31) for driving the threaded spindle (33).

12. Riveting tool according to one of the preceding claims, wherein the riveting tool (1) is a hand riveting tool with a handle part (2).

13. Blind rivet setting tool (100), comprising a riveting tool (1) according to one of claims 1 to 12 with a rivet mandrel (120) of a blind rivet (110) to be set, which is received in the mandrel holder (12) of the riveting tool (1).

14. Blind rivet nut setting tool (200), comprising a riveting tool (1) according to one of claims 1 to 12 with a threaded rivet mandrel (220) accommodated in the mandrel receptacle (12) of the riveting tool (1) for a blind rivet nut (210) to be set.

15. Blind rivet screw setting tool (300), comprising a riveting tool (1) according to one of claims 1 to 12 with a threaded rivet mandrel (320) of a blind rivet screw (310) to be set, which is received in the mandrel holder (12) of the riveting tool (1).

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