Riveting device having a compact design
20250353071 · 2025-11-20
Assignee
Inventors
Cpc classification
B21J15/326
PERFORMING OPERATIONS; TRANSPORTING
B25F5/02
PERFORMING OPERATIONS; TRANSPORTING
B25F5/001
PERFORMING OPERATIONS; TRANSPORTING
International classification
B21J15/04
PERFORMING OPERATIONS; TRANSPORTING
B21J15/26
PERFORMING OPERATIONS; TRANSPORTING
B21J15/32
PERFORMING OPERATIONS; TRANSPORTING
B25B27/00
PERFORMING OPERATIONS; TRANSPORTING
B25F5/00
PERFORMING OPERATIONS; TRANSPORTING
Abstract
The present disclosure comprises a riveting device (1) having a device housing (5), a riveting tool (10) and a drive device (30) in the device housing (5) for actuating the riveting tool (10). The riveting tool (10) has a mouthpiece (11) and a mandrel holder (12) that can be moved relative to the mouthpiece (11) along an operative axis (w). The drive device (30) has a threaded spindle (33) which has a feed thread (33.3), is operatively connected to the mandrel holder (12) and is configured to move along the operative axis (W). The threaded spindle (33) is formed as a hollow spindle having a through hole (40) extending in the direction of its longitudinal extension, and the threaded spindle (33) is assigned a torque arm (41) which secures the threaded spindle (33) against rotation relative to the device housing (5). The torque arm (41) is fixed on the threaded spindle (33) via the through hole (40) to improve the compactness.
Claims
1.-22. (canceled)
23. A riveting device (1), comprising: a device housing (5); a riveting tool (10) having a mouthpiece (11) and a mandrel holder (12), wherein the mandrel holder (12) can be moved relative to the mouthpiece (11) along an operative axis (w); and a drive device (30) in the device housing (5) for actuating the riveting tool (10) with a threaded spindle (33), wherein the threaded spindle (33) has a feed thread (33.3), wherein the threaded spindle (33) is operatively connected to the mandrel holder (12) and is configured to be moved along the operative axis (W), wherein the threaded spindle (33) is formed as a hollow spindle having a through hole (40) extending in a direction of its longitudinal extension, wherein the threaded spindle (33) is coupled to a torque arm (41), wherein the torque arm (41) secures the threaded spindle (33) against rotation relative to the device housing (5), and wherein the torque arm (41) is fixed on the threaded spindle (33) via the through hole (40).
24. The riveting device according to claim 23, wherein the torque arm (41) is fixed on the threaded spindle (33) by screwing it into the through hole (40).
25. The riveting device according to claim 24, wherein the threaded spindle (33) has a fixing thread (40.1) running in the opposite direction to its feed thread (33.3) in the through hole (40), and wherein the torque arm (41) is screwed into the through hole (40) while engaging into the fixing thread (40.1).
26. The riveting device according to claim 24, wherein the riveting device (1) is a hand riveting device and includes a handle part (2), and wherein the handle part (2) is formed on the device housing (5).
27. A blind rivet setting tool (100), comprising: the riveting device (1) according to claim 23, and a rivet mandrel (120) of a blind rivet (110) to be set, a blind rivet nut (210) to be set, or a blind rivet screw (310) to be set, wherein the rivet mandrel is received in the mandrel holder (12) of the riveting device (1).
28. A riveting device (1), comprising: a device housing (5); a riveting tool (10) having a mouthpiece (11) and a mandrel holder (12), wherein the mandrel holder (12) can be moved relative to the mouthpiece (11) along an operative axis (w); and a drive device (30) in the device housing (5) for actuating the riveting tool (10) with a threaded spindle (33), wherein the threaded spindle (33) has a feed thread (33.3), wherein the threaded spindle (33) is operatively connected to the mandrel holder (12) and is configured to be moved along the operative axis (W), wherein the threaded spindle (33) is formed as a hollow spindle having a through hole (40) extending in a direction of its longitudinal extension, wherein the threaded spindle (33) is coupled to a torque arm (41), wherein the torque arm (41) secures the threaded spindle (33) against rotation relative to the device housing (5), wherein the torque arm (41) is fixed to the threaded spindle (33) by screwing it on via a fixing thread (40.1), and wherein the fixing thread (40.1) runs in the opposite direction to the feed thread (33.3) of the threaded spindle (33).
29. The riveting device according to claim 28, wherein the torque arm (41) has a base body (41.1) which protrudes axially from the threaded spindle (33) and prevents rotation with respect to a counter bearing (43) secured against rotation with respect to the device housing (5) directly or indirectly via at least one intermediate element (42).
30. The riveting device according to claim 29, wherein the base body (41.1) has a bore (44) extending transversely to a spindle axis(S) of the threaded spindle (32.1), and wherein a magnet element (45) for a Hall sensor device is received in the bore (44).
31. The riveting device according to claim 30, wherein the intermediate element (42) is an iron element, and the bore (44) is arranged near the intermediate element (42), so that the magnet element (45) is held in the bore (44) by a magnetic force.
32. The riveting device according to claim 29, wherein the base body (41.1) has a radial extension originating from a spindle axis(S) in at least one spatial direction, and wherein the radial extension is smaller than or equal to the radial extension of the threaded spindle (33) in a region of the base body (41.1).
33. The riveting device according to claim 29, wherein the threaded spindle (33) is engaged with a spindle nut (34) of a spindle gear (32), and wherein the drive device (30) has an electric motor (31) and a reduction stage (37), interposed between the electric motor (31) and the spindle gear (32), having an intermediate shaft (38), wherein the reduction stage (37) is arranged between the spindle nut (34) and a wall section (7) of the device housing (5) in an axial direction.
34. The riveting device according to claim 33, wherein the reduction stage (37) has a radial extension originating from a shaft axis (A) of the intermediate shaft (38), wherein the radial extension is smaller than a distance between the shaft axis (A) of the intermediate shaft (38) and a facing outer side of the base body (41.1) and/or the threaded spindle (33).
35. The riveting device according to claim 33, wherein the intermediate shaft (38) is mounted radially integral with the housing in relation to the device housing (5) via a radial bearing (46), and wherein the radial bearing (46) is on a side of the reduction stage (37) facing away from the wall section (7).
36. The riveting device according to claim 35, wherein a gear element (37.1) of the reduction stage (37) is arranged on the intermediate shaft (38) in a region of a free end of the intermediate shaft (38) facing towards the wall section (7).
37. The riveting device according to claim 35, wherein the riveting device (1) comprises a spring element (15), wherein the spring element (15) acts with a force inside the mandrel holder (12), wherein the spring element (15) is arranged in the through hole (40) of the threaded spindle (33), and wherein an extension (41.2) of a torque arm (41) present in the through hole (40) serves as a counter holder for the spring element (15).
38. The riveting device according to claim 28, wherein the riveting device (1) is a hand riveting device and includes a handle part (2), and wherein the handle part (2) is formed on the device housing (5).
39. A blind rivet setting tool (100), comprising: the riveting device (1) according to claim 28, and a rivet mandrel (120) of a blind rivet (110) to be set, a blind rivet nut (210) to be set, or a blind rivet screw (310) to be set, wherein the rivet mandrel is received in the mandrel holder (12) of the riveting device (1).
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0035]
[0036]
[0037]
[0038]
[0039]
[0040]
[0041]
[0042]
[0043]
[0044]
DETAILED DESCRIPTION
[0045]
[0046] The exemplary riveting device 1 comprises a riveting tool 10 and a drive device 30 for actuating the riveting tool 10. Preferably, the riveting tool 10 is received in a tool housing 4. Preferably, the drive device 30 is received in a device housing 5. Preferably, the tool housing 4 is a metal housing. Preferably, the device housing 5 is a plastic housing.
[0047] The exemplary riveting device 1 can be a hand riveting device. The hand riveting device 1 has a gripping surface 2.1 which can be formed at least partially on the device housing 5. For example, the hand riveting device 1 has a handle part 2 which is at least partially formed by the device housing 5. The riveting device 1 can be held in the hand by the gripping surface 2.1 or the handle part 2 when it is used for setting a rivet, in particular a blind rivet, on a workpiece. The riveting process as such then takes place by actuating the riveting tool 10 via the drive device 30.
[0048] Preferably, the drive device 30 is an electromechanical drive device. The electromechanical drive device 30 comprises for example an electric motor 31 having a rotatable output shaft 31.1 and preferably a spindle gear 32, which can be driven by the electric motor 31. Preferably, the spindle gear 32 is set up to convert a rotational drive movement, coming from the output shaft 31.1 into a translational drive movement which acts along an operative axis W to actuate the riveting tool 10. The spindle gear 32 can be a ball screw drive.
[0049] A preferably replaceable electrical energy storage device, such as an accumulator 3, can be provided for the electrical energy supply of the drive device 30, which energy storage device is arranged, for example, in the region of an end of the handle part 2 facing away from the riveting tool 10. Therefore, the riveting device 1 can be a cordless tool.
[0050] The riveting tool 10 can comprise a mouthpiece 11 and a mandrel holder 12 that can be moved relative to the mouthpiece 11 in the direction of an operative 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 can be moved 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.
[0051] The mouthpiece 11 serves, for example, to receive a rivet (not shown in
[0052] For example, a spring element 15 is provided, which acts with a force in the mandrel holder 12, for example via a pressure part 16. The force of the spring element 15 can be used as a pretension force which causes or at least helps the rivet mandrel to be fixed in the mandrel holder 12. For example, the spring element 15 is provided in order to apply a spring force to the clamping elements 14, 14 to force them into the chuck housing 13. As a result, the clamping elements 14, 14 are pushed into a clamping position against a rivet mandrel, for example of a blind rivet, introduced via the through hole 11.1 of the mouthpiece 11 into the chuck housing 13. For example, the spring element 15 is a compression spring.
[0053] The riveting tool 10 can be actuated by the drive device 30 so that the mandrel holder 12 or the chuck housing 13 with the rivet mandrel fixed therein is moved away from the mouthpiece 11, in the direction of the operative axis W. This happens, for example, by the drive device 30 pulling the mandrel holder 12 or the chuck housing 13 away from the mouthpiece 11. This mode of operation, which is known per se, and the blind riveting which can be carried out with it is described in more detail in the 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 attach a meaning to identically worded terms which differs from the present meaning.
[0054] Preferably, the mouthpiece 11 is fixed to the tool housing 4, for example screwed to it. Preferably, the mandrel holder 12, in particular the chuck housing 13 is received in the tool housing 4 so as to be moveable in the direction of the operative axis W. For example, the tool housing 4 is tubular. For example, the mouthpiece 11 is fixed on one end of the tool housing 4 and the opposing end faces towards the device housing 5.
[0055] Preferably, the spindle gear 32 is arranged in the device housing 5. Preferably, the spindle gear 32 comprises a threaded spindle 33 having a feed thread 33.3 and a spindle nut 34 that is or can be engaged with the latter. Preferably, the threaded spindle 33 has a front end 33.1, facing towards the mandrel holder 12, in particular the chuck housing 13, and an opposing back end 33.2. Preferably, the threaded spindle 33 and the spindle nut 34 are arranged concentrically to each other with regard to a transmission axis. Preferably, the spindle axis S of the threaded spindle 33 is on the transmission axis. Preferably, the output shaft 31.1 of the electric motor 31 is arranged axially parallel to the transmission axis. Preferably, the transmission axis or the spindle axis S is on the operative axis W.
[0056] For example, the threaded spindle 33 and the spindle nut 34 are set up in such a way that the spindle nut 34 is the gear element that is or can be driven by the electric motor 31 and the threaded spindle 33 is used for performing the translational drive movement in order to actuate the riveting tool 10. For example, the threaded spindle 33 is non-displaceably connected to the mandrel holder 12 or the chuck housing 13 at its front end 33.1 directly or indirectly, for example via an intermediate piece. For example, the spindle nut 34 is also rotatably mounted in the radial direction relative to the transmission axis or the operative axis W via at least one, preferably two radial bearings 35, 35 in the device housing 5.
[0057] 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 roller bearings, in particular deep groove ball bearings.
[0058] For example, the spindle nut 34 is mounted axially with respect to the transmission axis or the operative axis W via an axial bearing 36 in a support ring 39, serving as a bearing housing, wherein the support ring 39 is supported on the mouthpiece 11 in the axial direction via the tool housing 4. The tool housing 4 itself is held on the support ring 39, in particular held loosely, via a retaining structure 6, such as for example a ring-shaped cover element.
[0059] Preferably, the support ring 39 is designed to be resistant to deformation and pressure. 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.
[0060] As can be seen clearly from
[0061] For example, the reduction stages 37, 37 are connected in series in the force 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 gears. Similarly, the device housing 5 can be used for radially mounting the reduction stages 37, 37. The device housing 5 can also be used for radially mounting the electric motor 31.
[0062] In relation to the mounting of the spindle gear 32, in particular the spindle nut 34, to the mounting of the reduction stages 37, 37, in particular the common intermediate shaft 38, and to the mounting of the electric motor 31, reference is made, for the purpose of the completion and expansion of the present disclosure, to the German patent application with the official file number DE 10 2022 116 406.3, with the note that the patent application may attribute a meaning to identically worded terms which differs from the present meaning.
[0063] Preferably, the threaded spindle 33 is formed as a hollow spindle with a through hole 40 extending in the direction of its longitudinal extension. The through hole 40 makes it possible to remove any rivet mandrel remnants remaining from a riveting process from the riveting tool 10. In this case, for example, the pressure part 16 arranged on the front end 33.1 of the threaded spindle 33 is received in the through hole 40 and itself is formed as a hollow body having a through hole 16.1.
[0064] For example, the through hole 40 on the back end 33.2 of the threaded spindle 33 leads into a tubular element 50, which in turn leads into a collection container 4. For example, in this manner, a mandrel removal path is realised via the threaded spindle 33, wherein the collection container 4 serves as a collector for mandrel remnants. Preferably, the collection container 4 is arranged fixed integral with the housing relative to the device housing 5, in particular arranged releasably, for example fixed on the device housing 5, in particular releasably fixed thereon.
[0065]
[0066]
[0067] In the exemplary riveting device 1, the torque arm 41 is fixed on or connected in a rotationally fixed manner to the threaded spindle 33 via the through hole 40. In this manner, installation space in the radial direction in relation to the spindle axis S is reduced, since a region radially near the centre of the threaded spindle 33 is used for fixing the torque arm 41.
[0068] Preferably, the torque arm 41 is fixed on the threaded spindle 33 by screwing it into the through hole 40. For example, the threaded spindle 33, in the region of its back end 33.2, has a fixing thread 40.1, in particular internal thread, in the through hole 40 into which the torque arm 41 is screwed. For example, the pitch of the fixing thread 40.1 is designed to run in the opposite direction to the pitch of the feed thread 33.3 of the threaded spindle 33. Therefore, a self-tightening of the torque arm 41 is enabled with an actuating movement or pulling movement of the threaded spindle 33.
[0069] Preferably, the torque arm 41 has a base body 41.1 which protrudes axially from the threaded spindle 33. Preferably, the torque arm 41 has a section inserted into the through hole 40, which is an extension 41.2 of the base body 41.1, for example. For example, the extension 41.2 has a thread, in particular external thread, via which the screw connection is formed with the threaded spindle 33. For example, the extension 41.2 is used as a counter holder for the spring element 15 (
[0070] Preferably, the base body 41.1 prevents rotation of the threaded spindle 33 with respect to a counter bearing 43 via at least one intermediate element 42 or 42 (
[0071] For example, the through hole 43.1 of the counter bearing 43 has an unrounded, in particular polygonal, for example quadrilateral cross-section. For example, the base body 41.1 of the torque arm 41 has an unrounded, in particular polygonal, for example quadrilateral cross-section. Preferably, the cross-section of the through hole 43.1 and the cross-section of the base body 41.1 are formed corresponding to each other. Preferably, the counter bearing 43, in particular the through hole 43.1 of same, and the torque arm 41, in particular the base body 41.1, are arranged coaxially in relation to the spindle axis S or the operative axis W. Preferably, the cross-section of the through hole 43.1 of the counter bearing 43 and the cross-section of the base body 41.1 are formed in such a way that there is a gap between the outer circumference of the base body 41.1 and the circumference of the through hole 43.1.
[0072] Preferably, the counter bearing 43 has at least one guide track 43.2 or 43.2, on which the torque arm 41 is guided while maintaining the anti-rotation protection when the threaded spindle 33 performs a translational movement along the operative axis W. For example, the at least one guide track 43.2 or 43.2 is formed on a surface section of the through hole 43.1 of the counter bearing 43 and/or on a surface section of a lateral recess in a side wall delimiting the through hole 43.1. For example, the at least one intermediate element 42 or 42 of the base body 41.1 is guided on the at least one guide track 43.2 or 43.2. The at least one intermediate element 42 or 42 of the base body 41.1 can be or comprise a sliding body or a rolling body, such as a needle bearing or a sliding bearing. The intermediate element 42 or 42 can be a cylindrical pin, for example.
[0073] For example, the base body has a bore 44 or another hole in which a magnetically acting magnet element 45 for a sensor device using a magnetic field, such as for example a Hall sensor device, is received. For example, the bore 44 or the hole is arranged with its central axis transverse to the spindle axis S. For example, the magnet element is held in the bore 44 or the hole by magnetic force. For this purpose, the intermediate element 42 or 42 has or consists of a corresponding metallic material, such as for example iron.
[0074] In the exemplary riveting device 1, the at least one reduction stage 37 is arranged in the axial direction between the spindle nut 34 and a wall section 7 of the device housing 5. Preferably, for this case, the reduction stage 37 has a radial extension, originating from the shaft axis A of the intermediate shaft 38, which is smaller than the distance D between he shaft axis A of the intermediate shaft 38 and the facing outer side of the base body 41.1 and/or the threaded spindle 33 (
[0075] In order to reduce radial installation space, it is provided, for example, that the base body 41.1 has a radial extension in the direction towards the intermediate shaft 38, which radial extension is at least equal to or smaller than the radial extension of the threaded spindle 33. For example, the intermediate shaft 38 is arranged below the threaded spindle 33 in the vertical direction. For example, the at least one intermediate element 42 or 42 of the torque arm 41 is arranged in relation to its central axis in the horizontal direction on the base body 41.1. For example, the bore 44 is arranged with the magnet element 45 received therein on the side of the base body 41.1 which is facing away in the vertical direction of the intermediate shaft 38.
[0076]
[0077] As can be seen from
[0078] For example, the tubular element 50 engages with one end into the through hole 40 of the threaded spindle 33. For example, the tubular element 50 remains engaged in the through hole 40 over the stroke length of the threaded spindle 33. Preferably, the tubular element 50 is fixed, for example with its other end, to a wall section arranged integral with the housing in relation to the device housing 5 or is fixed to the wall section 7. For example, the wall section 7 extends transversely, in particular orthogonally, to the tube axis of the tubular element 50. Preferably, the tube axis of the tubular element 50 is coaxial to the operative axis W and/or the spindle axis S.
[0079]
[0080] A fixing structure 51 can be provided for fixing the tubular element 50 on the
[0081] device housing 5 or the wall section 7. For example, the fixing structure 51 comprises two flange sections 52, 53 assigned to the tubular element 50, in particular plate-shaped flange sections 52, 53. Preferably, the flange sections 52, 53 are connected fixedly to the tubular element 50, for example moulded thereon. For example, the flange sections 52, 53 are arranged axially offset from each other. For example, the flange sections 52, 53 each extend along a different circumferential section around the outer circumference of the tubular element 50 (
[0082] For example, the flange sections 52, 53 each have a flange surface 52.1 or 53.1, which cooperates with a mating surface 7.1 or 7.1 of the wall section 7. For example, the flange surfaces 52.1, 53.1 are arranged transversely, in particular orthogonally, to the tube axis of the tubular element 50. For example, the flange sections 52.1, 53.1 point in opposite directions to each other. For example, the associated mating surfaces 6.1, 6.1 are arranged on different sides of the wall section 7. For example, one of the mating surfaces 6.1, 6.1 is formed on an inner side 7.2 facing towards the threaded spindle 33 and the other mating surface 6.1 is formed on an opposite outer side 7.3 of the wall section 7.
[0083] In order to reduce axial installation space, the fixing structure 51 can be formed so that it at least essentially ends flush with the inner side 7.2 and/or the outer side 7.3 of the wall section 7 or is lower than the inner side 7.2 and/or the outer side 7.3 of the wall section 7. For this purpose, it is provided, for example, that the flange sections 52, 53 are dimensioned accordingly in their thickness, so that, for example, the outward-facing side of at least one of the flange sections 52, 53, i.e. the side opposite the flange surface 52.1 or 53.1 of the flange section 52 or 53, is essentially flush with the inner side 7.2 and/or the outer side 7.3 of the wall section 7 or is lower than the inner side 7.2 and/or the outer side 7.3 of the wall section 7.
[0084] For example, the device housing 5 is constructed from multiple parts, in particular at least two parts, and has at least two housing parts 8, 8, in particular housing shells. For example, the housing parts 8, 8 lie next to each other in a parting plane when they are assembled.
[0085]
[0086]
[0087] For example, with the exemplary blind rivet nut setting device 200, the pressure part 16 is introduced into a receptacle of the threaded rivet mandrel 220 and forms a positive-locking rotationally-fixed connection to the threaded rivet mandrel 220 via the receptacle. For example, the pressure part 16 is held in the receptacle of the threaded rivet mandrel 220 by the force of the spring element 15 of the riveting device 1 (
[0088]
REFERENCE NUMERAL LIST
[0089] 1 riveting device [0090] 2 handle part [0091] 2.1 gripping surface [0092] 3 accumulator [0093] 4 tool housing [0094] 5 device housing [0095] 6 retaining structure [0096] 7 wall section [0097] 7.1, 7.1 mating surface [0098] 7.2 inner side [0099] 7.3 outer side [0100] 8, 8 housing part [0101] 8.1, 8.1 receptacle [0102] 9 through hole [0103] 10 riveting tool [0104] 11 mouthpiece [0105] 11.1 through hole [0106] 12 mandrel holder [0107] 13 chuck housing [0108] 14, 14 clamping element [0109] 15 spring element [0110] 16 pressure part [0111] 16.1 through hole [0112] 30 drive device [0113] 31 electric motor [0114] 31.1 output shaft [0115] 32 spindle gear [0116] 33 threaded spindle [0117] 33.1 front end [0118] 33.2 back end [0119] 33.3 feed thread [0120] 34 spindle nut [0121] 35, 35 radial bearing [0122] 36 axial bearing [0123] 37, 37 reduction stage [0124] 37.1 gear element [0125] 38 intermediate shaft [0126] 39 support ring [0127] 40 through hole [0128] 40.1 fixing thread [0129] 41 torque arm [0130] 41.1 base body [0131] 41.2 extension [0132] 41.3 through hole [0133] 42, 42 intermediate element [0134] 43 counter bearing [0135] 43.1 through hole [0136] 43.2, 43.2 guide track [0137] 44 bore [0138] 45 magnet element [0139] 46, 46 radial bearing [0140] 50 tubular element [0141] 51 fixing structure [0142] 52 flange section [0143] 52.1 flange surface [0144] 53 flange section [0145] 53.1 flange surface [0146] 60 collection container [0147] 100 blind rivet setting tool [0148] 110 blind rivet [0149] 120 rivet mandrel [0150] 130 rivet body [0151] 200 blind rivet nut setting tool [0152] 210 blind rivet nut [0153] 220 threaded rivet mandrel [0154] 230 rivet body [0155] 300 blind rivet screw setting tool [0156] 310 blind rivet screw [0157] 320 threaded rivet mandrel [0158] 330 rivet body [0159] W operative axis [0160] S spindle axis [0161] A shaft axis [0162] D distance