Riveting tool with spring element and integrated threaded spindle

Description

[0001] The present disclosure relates to a riveting device with a spring element and an integrated threaded spindle, and in particular to a blind rivet setting device, a blind rivet nut setting device and a blind rivet screw setting device.

[0002] Riveting tools are typically used to create a riveted joint between two or more materials, such as sheet metal, at a joint where the materials meet. A plastically deformable, usually cylindrical, fastener, generally called a rivet, is used to form the riveted joint. The rivet usually has a pre-formed setting head at one end. To create the riveted joint, the rivet is inserted into a pre-drilled hole at the joint until the setting head is reached, and then the other end of the rivet is plastically deformed into a closed head.

[0003] Riveting tools can also be used to thread thin-walled components. This is achieved using rivet nuts or rivet screws, which combine a rivet with a threaded element. The rivet nuts or rivet screws are inserted into a pre-drilled rivet hole in the component, and then a portion of the rivet is plastically deformed to form a closing head.

[0004] Conventional riveting tools typically comprise a riveting die designed to produce a plastic deformation forming the rivet head. To actuate the riveting die, the riveting tools have a drive unit, which is often electromechanical and includes, for example, an electric motor and a spindle drive designed as a ball screw. Such a riveting tool is described in EP 0 670 199 A1, where it is referred to as a setting tool. This riveting tool is designed and configured for setting blind rivet nuts by applying a pulling motion to a threaded rivet mandrel, subjecting the blind rivet nut to a compression forming a rivet head.

[0005] Riveting tools often feature a spring element whose force is used to press the clamping jaws of a chuck housing against a rivet mandrel, such as that of a blind rivet, held within it, thus axially fixing the mandrel in the chuck housing. The chuck housing is part of the riveting tool and, during a riveting operation, is moved away from a nozzle by an electrically driven threaded spindle. The rivet head rests against this nozzle.

[0006] In some riveting tools, the threaded spindle is used to house the spring element. The spring element is located within the threaded spindle and is supported against the spindle on one side and acts on the clamping jaws via a pressing element on the other. Such a riveting tool is described in EP 0 527 414 A1 and forms the basis for the preamble of claim 1. There, the spring element is inserted into the threaded spindle from the side facing the chuck housing and is located on a tubular extension of the pressing element, 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 the chuck housing is screwed onto this thread. The front end of the threaded spindle thus has a thinner wall than other areas of the threaded spindle that are subject to the force transmission when the riveting tool is actuated.Therefore, a higher component load occurs precisely in this area during the operation of the riveting device.

[0007] Other riveting tools are known from EP 3 643 425 A1, EP 3 957 441 A1 and US 3 410 128 A.

[0008] As part of ongoing development, a need can be seen to improve the component durability of a riveting device of the type mentioned above.

[0009] One embodiment of a basic riveting device comprises a riveting tool and a drive unit for actuating the riveting tool. For example, the riveting device, and 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 fitted with a blind rivet by means of 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 has a nozzle and a mandrel receptacle that is movable relative to the nozzle along or in the direction of an effective axis. The riveting tool also has a spring element that exerts a force into the mandrel receptacle. In particular, the spring element exerts a force along the effective axis, i.e., axially. For example, the mandrel receptacle comprises a chuck housing that is movable relative to the nozzle along or in the direction of the effective axis and at least one clamping element, in particular a clamping jaw, that is movable within the chuck housing along a clamping path. For example, the spring element is configured to exert a force on the at least one clamping element into the chuck housing.

[0011] The drive unit has a threaded spindle with a drive thread, which is operatively connected to the mandrel holder and is designed to move along the effective axis. The spring element is housed within, or integrated into, the threaded spindle. Such an internal spring element facilitates a compact design of the riveting tool, particularly axially with respect to the effective axis, as it reduces overall length.

[0012] The threaded spindle has a front end facing the mandrel receptacle and a rear end opposite it. The threaded spindle is designed as a hollow spindle with a passage running along its longitudinal axis, for example, to provide a mandrel disposal path. The passage has a rear section extending to the rear end of the threaded spindle and a front section located in front of it. At the front end, the threaded spindle has a mounting structure created by a recess in the material, through which the threaded spindle is connected to the mandrel receptacle in a displacement-resistant manner, for example, directly or indirectly via an intermediate element.

[0013] An improved component durability is achieved in an embodiment of the riveting device in which the front longitudinal section of the threaded spindle passage has a cross-sectional area that is smaller than that of the rear longitudinal section. This design of the passage counteracts any weakening of the threaded spindle.

[0014] The larger cross-sectional area of ​​the passage in the rear section also provides sufficient installation space for the spring element. Therefore, the spring element is positioned in the rear section of the threaded spindle's passage. Since the rear section extends to the rear end of the threaded spindle, assembly is simplified, as the spring element can be inserted into the passage from the rear end of the spindle.

[0015] To enable the force of the spring element to act in the direction of the mandrel receptacle, according to a further embodiment the spring element is supported in the direction of its effective axis in the region of its rear longitudinal section, for example on the rear side of the threaded spindle, in particular directly or via a counter-support. If a counter-support is provided, the counter-support 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 section of the through-hole extends to the front end of the threaded spindle. This design of the through-hole counteracts any weakening of the threaded spindle component in the area of ​​its front end, where the fastening structure for connecting the mandrel holder is located.

[0017] The fastening structure of the threaded spindle can include 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 area of ​​the fastening structure, any potential weakening of the component caused by the thread is effectively counteracted.

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

[0019] In one embodiment, the threaded spindle engages with a spindle nut of a spindle drive, which is, for example, a component of the drive unit. 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 in the threaded spindle is axially arranged such that the spindle nut and the spring element overlap, or an end of the spindle nut facing the riveting tool is positioned in front of an end of the spring element facing the riveting tool. This facilitates a compact design in the axial direction with respect to the effective axis.

[0020] In a further embodiment, a pressure element for transmitting the force of the spring element is slidably mounted in the front longitudinal section of the threaded spindle's passage. In this case, the improved riveting device can be designed such that the pressure element is a hollow body with a passage extending along its longitudinal axis, the diameter of which is larger than the diameter of a rivet mandrel usable by the riveting tool. This allows any remaining rivet mandrel fragment from a riveting operation to be removed from the riveting tool via the passage of the pressure element.

[0021] In another embodiment, the spring element has a passage extending along 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 remove any remaining rivet mandrel fragment from the riveting tool after a riveting operation.

[0022] A further embodiment of the counterholder described above aims in the same direction, providing a passage extending along 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. A mandrel disposal path can thus be created through the passage of the threaded spindle and / or the passage of the pressing element and / or the passage of the counterholder.

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

[0024] In another embodiment, the threaded spindle is a component of an electromechanical drive unit, which includes an electric motor for driving the threaded spindle. For example, the threaded spindle is a ball screw and is, for instance, a component of a ball screw drive.

[0025] In another embodiment, the riveting tool is designed as a hand-held riveting tool and includes a handle, which, for example, has a longitudinal extension transverse to the working axis. For example, the handle is formed on, or particularly integrally incorporated into, a device housing that accommodates the drive unit, especially the threaded spindle. 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 positioned at the point to be riveted.

[0026] Based on 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 for a blind rivet to be set, which is held in its mandrel holder.

[0027] Another aspect is the proposed blind rivet nut setting tool. This tool comprises the riveting tool described above and has a threaded rivet mandrel, held in its mandrel holder, for setting a blind rivet nut.

[0028] Another aspect is the proposed blind rivet screw setting tool. This tool comprises the riveting tool described above and has a threaded rivet mandrel for a blind rivet screw to be set, which is held in its mandrel holder.

[0029] Further details and features will become apparent from the following description of several exemplary embodiments with reference to the drawing. These show Fig. 1 shows an exemplary embodiment of a riveting device with a riveting tool and a drive unit for actuating the riveting tool in a schematic sectional view; Fig. 2 shows an enlarged section of the riveting device. Figure 1 In the area of ​​the riveting tool and a spindle drive connected to it, a possible embodiment of a blind riveting device with the exemplary riveting device of the is shown in a schematic sectional view, Fig. 3. Figure 1 In a schematic partial representation, Fig. 4 shows a possible embodiment of a blind rivet nut setting device with the exemplary riveting device of the Figure 1 in a schematic partial representation, and Fig. 5 a possible embodiment of a blind rivet screw setting device with the exemplary riveting device of the Figure 1 in a schematic partial representation.

[0030] Figure 1Figure 1 shows the construction of an exemplary embodiment of a riveting tool 1, which is also referred to in technical circles as a setting tool. The exemplary riveting tool 1 is suitable for attaching rivets using the blind riveting method and is designed for the use of blind rivets.

[0031] The exemplary riveting device 1 comprises a riveting tool 10 and a drive unit 30 for actuating the riveting tool 10. Preferably, the riveting tool 10 is housed in a tool housing 60. Preferably, the drive unit 30 is housed in a device housing 50. Preferably, the tool housing 60 is a metal housing. Preferably, the device housing 50 is a plastic housing.

[0032] Preferably, the drive unit 30 is an electromechanical drive unit. The electromechanical drive unit 30 comprises, for example, an electric motor 31 with a rotatable output shaft 31.1 and preferably a spindle drive 32, which can be driven by the electric motor 31. Preferably, the spindle drive 32 is configured to convert a rotary drive motion originating from the output shaft 31.1 into a translational drive motion acting along an effective axis W for actuating the riveting tool 10. The spindle drive 32 can be a ball screw drive.

[0033] Figure 2Figure 1 shows an enlarged section of the exemplary riveting device 1 in the area of ​​the riveting tool 10 and the spindle drive 32. As can be seen in particular, the riveting tool 10 has a nozzle 11 and a mandrel holder 12 movable relative to the nozzle 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, movable in the chuck housing 13 along a clamping path. Preferably, the nozzle 11 and / or the mandrel holder 12 and / or the chuck housing 13 and / or the clamping elements 14, 14' are made of metal.

[0034] The mouthpiece 11, for example, serves to hold a (into the Figure 1 and 2The chuck housing 12 (not shown) is used for setting rivets, in particular blind rivets, and preferably has a through-hole 11.1 for inserting the rivet mandrel. The mandrel receptacle 12 serves, for example, to fix the rivet mandrel, thus creating a non-displaceable connection between the mandrel and the mandrel receptacle 12. This can be achieved, for example, via the chuck housing 13 with the clamping elements 14, 14' movably arranged therein, by which the rivet mandrel is fixed, in particular clamped, in the chuck housing 13.

[0035] Furthermore, a spring element 15 is provided, which exerts a force on the mandrel receptacle 12. The force of the spring element 15 can be used as a preload force, which causes or at least assists in fixing the rivet mandrel in the mandrel receptacle 12. For example, the spring element 15 is provided to exert a spring force on the clamping elements 14, 14' into the chuck housing 13. This presses the clamping elements 14, 14' into the clamping position against a rivet mandrel, for example, of a blind rivet, which is inserted into the chuck housing 13 via the through-hole 11.1 of the nozzle 11. The spring element 15 is, for example, a compression spring.

[0036] The drive unit 30 can actuate the riveting tool 10 such that the mandrel holder 12 or the chuck housing 13, together with the rivet mandrel held therein, is moved away from the nozzle 11 in the direction of the effective axis W. This occurs, for example, when the drive unit 30 pulls the mandrel holder 12 or the chuck housing 13 away from the nozzle 11. This known operating principle and the blind riveting that can be carried out with it are described in more detail in publication 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 publication may assign a meaning to identical terms that differs from the meaning given here.

[0037] Preferably, the nozzle 11 is attached to the tool housing 60, for example by screwing it to it. Preferably, the mandrel receptacle 12, in particular the chuck housing 13, is movably mounted in the tool housing 60 in the direction of the effective axis W. For example, the tool housing 60 is tubular in shape. For example, the nozzle 11 is attached to one end of the tool housing 60 and the opposite end faces the device housing 50.

[0038] Preferably, the spindle drive 32 is arranged in the device housing 50. The spindle drive 32 comprises a threaded spindle 33 with a drive thread 33.3 and a spindle nut 34 that engages with or can be engaged with the spindle. Preferably, the threaded spindle 33 and the spindle nut 34 are arranged concentrically to each other with respect to a drive axis, in particular the drive axis of the spindle drive 32. Preferably, the output shaft 31.1 of the electric motor 31 is arranged parallel to the drive axis. Preferably, the drive axis lies on the effective axis W.

[0039] 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 driveable by the electric motor 31, and the threaded spindle 33 is used to perform 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.

[0040] 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 each other. For example, a drive point is located between the radial bearings 35, 35', via which the electric motor 31 is operatively connected to the spindle nut 34. For example, the radial bearings 35, 35' are rolling bearings, in particular deep groove ball bearings.

[0041] For example, the spindle nut 34 is axially supported with respect to the gear axis or the effective axis W by means of an axial bearing 36 in a support ring 39, which serves, for example, as a bearing housing, wherein the support ring 39 is supported axially via the tool housing 60 on the nozzle 11. The tool housing 60 itself is held, for example, by a retaining structure 51, such as an annular cover element, to the support ring 39, in particular loosely.

[0042] Preferably, the support ring 39 is designed to be rigid in terms of deformation or compression. 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 rolling bearing. The axial bearing 36 can also be a needle roller bearing.

[0043] For example, from the Figure 1As can be seen, at least one, preferably two, reduction stages 37, 37' can be interposed between the electric motor 31 and the spindle drive 32. For example, the reduction stages 37, 37' are connected in series in the power flow. For example, the reduction stages 37, 37' use a common intermediate shaft 38. For example, at least one of the reduction stages 37, 37' is a spur gear stage and the associated gear elements are spur gear wheels. 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.

[0044] With regard to the bearing arrangement of the spindle drive 32, in particular the spindle nut 34, the bearing arrangement of the reduction stages 37, 37', in particular the common intermediate shaft 38, and the bearing arrangement of the electric motor 31, reference is made to the German patent application with the official file number DE 10 2022 116 406.3 for the purpose of completing and supplementing the present disclosure, with the note that the patent application may assign a meaning to identical terms which differs from the meaning given here.

[0045] As can be seen in particular from the Figure 2As can be seen, the threaded spindle 33 has a front end 33.1 facing the mandrel receptacle 12, in particular the chuck housing 13, and an opposing rear end 33.2. The threaded spindle 33 has a fastening structure 33.4 in the region of its front end 33.1, by means of which the threaded spindle 33 is directly or indirectly connected to the mandrel receptacle 12, in particular the chuck housing 13, in a displacement-resistant manner. The fastening structure 33.4 is created by material recession or other post-processing or finishing of the threaded spindle 33. For example, the fastening structure 33.4 is a thread, in particular an external thread.

[0046] The threaded spindle 33 is designed as a hollow spindle with a passage 40 extending along its longitudinal axis. The passage 40 allows any remaining rivet mandrel material from the riveting tool 10 to be discharged via this passage. For example, the passage 40 opens at the rear end 33.2 of the threaded spindle 33 into a discharge sleeve 42, which in turn leads into a collection container 4 ( Figure 1 ) terminates. For example, the discharge sleeve 42 is permanently connected to the device housing 50. For example, the discharge sleeve 42 is inserted at one end into the passage 40 of the threaded spindle 33, particularly at the rear end 33.2. For example, a mandrel disposal path is thus realized via the threaded spindle 33, with the collection container 4 serving as a collector for mandrel remnants.

[0047] Preferably, the passage 40 of the threaded spindle 33 has a diameter larger than the diameter of a rivet mandrel usable or used by the riveting tool 10. 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 or other sticking of the rivet mandrel in the passage 40 of the threaded spindle 33 is avoided.

[0048] 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, specifically within the passage 40. This improves the compactness of the riveting tool 1 compared to a design with a spring element located outside the threaded spindle. The internal placement of the spring element 15 thus allows for a reduction in overall length.

[0049] To accommodate the spring element 15 in the passage 40 of the threaded spindle 33, the passage 40 is provided to have 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 located in front of it, and the front longitudinal section 40.1 has a cross-sectional area that 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.

[0050] This design of the passage 40 is specifically chosen, for example, to accommodate the larger radial extent of the spring element 15 compared to the radial extent of a rivet mandrel. Therefore, 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 the spring element 15 is thus arranged in the longitudinal section 40.2 with the larger cross-sectional area. Furthermore, the longitudinal section with the larger cross-sectional area is the rear longitudinal section 40.2 of the passage 40. This longitudinal section, compared to the front longitudinal section 40.1, is not further weakened by the fastening structure 33.4, in particular the fastening thread and, for example, an associated undercut.

[0051] Preferably, the front longitudinal section 40.1 of the passage 40 extends to the front end 33.1 of the threaded spindle 33. This prevents a weakening of the threaded spindle 33 in the area of ​​the fastening structure 33.4. For example, the front longitudinal section 40.1 of the passage 40 extends so far towards the rear end 33.2 of the threaded spindle 33 that the front longitudinal section 40.1 and the motion thread 33.3 of the threaded spindle 33 overlap each other in an overlap section 41.

[0052] For example, in an initial state prior to actuation of the riveting tool 10, the spring element 15 is axially arranged 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 lies in front of an end of the spring element 15 facing the riveting tool 10. A pressure element 16 is provided, for example, to transmit the force of the spring element 15 towards the mandrel receptacle 12. The pressure element 16 is, for example, slidably mounted, at least partially, in the front longitudinal section 40.1 of the passage 40. The spring element 15 is supported, for example, at its rear end against the threaded spindle 33. In the exemplary riveting device 1, this is achieved, for example, by means of a counter-support 17. The counter-support 17 is attached, for example, to the threaded spindle 33, in particular at its rear end 33.2 of the threaded spindle 33 is screwed on, for example screwed into the passage 40 of the threaded spindle 33.

[0053] Preferably, 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 is larger than the diameter of a rivet mandrel usable by the riveting tool 10. Preferably, the pressing element 16 is designed as a preferably elongated hollow body with a passage 16.1 extending in the direction of its longitudinal extent, the diameter of which is larger than the diameter of a rivet mandrel usable by the riveting tool 10. Preferably, the counter-holder 17 is designed as a preferably elongated hollow body with a passage 17.1 extending in the direction of its longitudinal extent, the diameter of which is larger than the diameter of a rivet mandrel usable by the riveting tool 10. In this way, it is possible to implement a mandrel disposal path, whereby the collection container 4 can be used as a collector for mandrel remnants.

[0054] 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 a (in the Figure 1 and 2 The intermediate sleeve or tube (not shown) can be inserted into the passage 15.1 of the spring element 15 or into the passage 17.1 of the counterholder 17, and the inner diameter of the intermediate sleeve or tube is, for example, larger than the diameter of the rivet mandrel usable by the exemplary riveting device 1. The intermediate sleeve or tube can be provided to maintain a constant cross-section of the mandrel disposal path over its preferably entire length and / or to adapt the cross-section of the mandrel disposal path to a specific mandrel diameter of the rivet mandrel used.

[0055] The exemplary 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 allows the exemplary riveting tool 1 to be held in the hand when it is applied to a workpiece to set a blind rivet. The riveting process itself is then carried out by actuating the riveting tool 10 via the drive unit 30.

[0056] For the electrical power supply of the drive unit 30, a preferably replaceable electrical energy storage device, such as a battery 3, can be provided, which is arranged, for example, in the area of ​​an end of the handle part 2 facing away from the riveting tool 10. In this respect, the exemplary riveting device 1 can be a battery-powered device.

[0057] Figure 3 Figure 1 shows an exemplary 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 the Figure 3For the sake of simplicity, only a section of the exemplary riveting device 1 in the area of ​​the riveting tool 10 is shown. In the blind rivet setting device 100, a rivet mandrel 120 of a blind rivet 110 is inserted into the nozzle 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 achieved, for example, by the spring element 15 of the exemplary riveting device 1 ( Figure 2 ) which, with its spring force, acts via the pressure part 16 on the at least one clamping element 14 or 14', thereby holding the at least one clamping element 14 or 14' in a clamping position against the rivet mandrel 120. The 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.

[0058] Figure 4Figure 1 shows an exemplary 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 element 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 element 16 has a function with regard to screwing the threaded rivet mandrel into the blind rivet nut. In the Figure 4 For the sake of simplicity, only a section of the exemplary riveting device 1 in the area of ​​the riveting tool 10 is shown. In the blind rivet nut setting device 200, a threaded rivet mandrel 220 for a blind rivet nut 210 is held in the mandrel receptacle 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.

[0059] For example, in the blind rivet nut setting tool 200, the pressing element 16 is inserted into a receptacle of the threaded rivet mandrel 220 and forms a positive-locking, rotationally fixed connection with the threaded rivet mandrel 220 via the receptacle. For example, the force of the spring element 15 of the exemplary riveting tool 1 ( Figure 2 ), which acts axially on the pressure part 16, holding the pressure part 16 in the receptacle of the threaded rivet mandrel 220.

[0060] Figure 5 Figure 3 shows an exemplary 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 element 16 are modified with respect to a rivet mandrel of a blind rivet screw, and the rivet mandrel is a threaded rivet mandrel. For example, the pressing element 16 has a function with respect to screwing the threaded rivet mandrel into a screw-in part of the mandrel holder 12. In the Figure 5 For the sake of simplicity, only a section of the exemplary riveting device 1 in the area of ​​the riveting tool 10 is shown. In the blind rivet screw setting device 300, a threaded rivet mandrel 320 of a blind rivet screw 310 is received in the mandrel receptacle 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.

[0061] For example, in the blind rivet screw setting tool 300, the pressing element 16 acts on the screwing element; in particular, the pressing element 16 is inserted into a receptacle of the screwing element and forms a positive-locking, rotationally fixed connection with the screwing element via the receptacle. For example, the force of the spring element 15 of the exemplary riveting tool 1 ( Figure 2 ), which acts axially on the pressure part 16, holding the pressure part 16 in the receptacle of the screw-in part. Reference symbol list

[0062] 1 Riveting tool 2 Handle part 2.1 Grip surface 3 Accumulator 4 Collection container 10 Riveting tool 11 Nozzle 11.1 Through hole 12 Mandrel 13 Chuck housing 14 Clamping element 14' Clamping element 15 Spring element 15.1 Through hole 16 Press part 16.1 Through hole 17 Counter holder 17.1 Through hole 30 Drive unit 31 Electric motor 31.1 Output shaft 32 Spindle gearbox 33 Threaded spindle 33.1 Front end 33.2 Rear end 33.3 Motion thread 33.4 Mounting structure 34 Spindle nut 35 Radial bearing 35' Radial bearing 36 Thrust bearing 37 Reduction stage 37' Reduction stage 38 Intermediate shaft 39 Support ring 40 Passage 40.1 Front length section 40.2 Rear length section 41 Overlap section 42 Discharge sleeve 42.1 Passage 50 Device housing 51 Mounting structure 60 Tool housing 100 Blind rivet setting tool 110 Blind rivet 120 Rivet mandrel 200 Blind rivet nut setting tool 210 Blind rivet nut 220 Threaded rivet mandrel 300 Blind rivet screw setting tool 310 Blind rivet screw 320 Threaded rivet mandrel Economic axis

Claims

1. Riveting device (1), comprising a riveting tool (10) having a mouthpiece (11), a mandrel holder (12) that can be moved relative to the mouthpiece (11) along an operative axis (W) and having a spring element (15) which exerts a force into the mandrel holder (12), a drive device (30) for actuating the riveting tool (10) with a threaded spindle (33) having a feed thread (33.3) and receiving the spring element (15) and which is operatively connected to the mandrel holder (12) and is set up to be moved along the operative axis (W), wherein the threaded spindle (33) has a front end (33.1) facing towards the mandrel holder (12) and an opposing back end (33.2) and is formed as a hollow spindle having a through hole (40) which extends in the direction of the longitudinal extension of the spindle and which has a back longitudinal section (40.2) extending up to the back end (33.2) of the threaded spindle (33) and a front longitudinal section (40.1) present before the back longitudinal section, and wherein in the region of the front end (33.1), the threaded spindle (33) has a fixing structure (33.4) created by a material recess, by means of which the threaded spindle (33) is non-displaceably connected directly or indirectly to the mandrel holder (12), characterised in that the front longitudinal section (40.1) of the through hole (40) has a cross-sectional surface area which is smaller than the cross-sectional surface area of the back longitudinal section (40.2), and the spring element (15) is arranged in the back longitudinal section (40.2).

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

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

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

5. Riveting device according to one of the preceding claims, wherein the front longitudinal section (40.1) of the through hole (40) and the feed thread (33.3) of the threaded spindle (33) overlap each other in an overlapping section (41).

6. Riveting device according to one of the preceding claims, wherein the threaded spindle (33) is engaged into a spindle nut (34) of a spindle gear (32) and in an initial state, present before actuating 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 towards the riveting tool (10) is in front of an end of the spring element (15) facing towards the riveting tool (10).

7. Riveting device according to one of the preceding claims, wherein a pressure part (16) is received displaceably in the front longitudinal section (40.1) of the through hole (40) for transmitting the force of the spring element (15), wherein the pressure part (16) is formed as a hollow body having a through hole (16.1) extending in the direction of its longitudinal extension, the diameter of which is greater than the diameter of a rivet mandrel that can be used by the riveting tool (10).

8. Riveting device according to one of the preceding claims, wherein the spring element (15) has a through hole (15.1) extending in the direction of the longitudinal axis of the threaded spindle (33), the diameter of through hole which is greater than the diameter of a rivet mandrel that can be used by the riveting tool (10).

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

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

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

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

14. Blind rivet nut setting tool (200), comprising a riveting device (1) according to one of claims 1 to 12 having a threaded rivet mandrel (220) for a blind rivet nut (210) to be set, which threaded rivet mandrel is received in the mandrel holder (12) of the riveting device (1).

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