CN114559245B - Automatic nut tightening device - Google Patents
Automatic nut tightening device Download PDFInfo
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- CN114559245B CN114559245B CN202210359237.3A CN202210359237A CN114559245B CN 114559245 B CN114559245 B CN 114559245B CN 202210359237 A CN202210359237 A CN 202210359237A CN 114559245 B CN114559245 B CN 114559245B
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- 230000000712 assembly Effects 0.000 claims abstract description 9
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims description 69
- 238000003825 pressing Methods 0.000 claims description 30
- 239000000725 suspension Substances 0.000 claims description 28
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000010923 batch production Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The invention relates to an automatic nut screwing device which comprises a workbench, two sliding table assemblies, a first positioning and clamping unit, a second positioning and clamping unit, a screwing unit and a positioning unit, wherein the two sliding table assemblies, the screwing unit and the positioning unit are respectively and mechanically arranged on the workbench; the first positioning and clamping unit is mechanically connected with a sliding platform on one sliding table assembly to realize positioning and clamping of the workpiece by the first positioning and clamping unit and drive the workpiece to move, and the second positioning and clamping unit is mechanically connected with a sliding platform on the other sliding table assembly to realize positioning and clamping of the workpiece by the second positioning and clamping unit and drive the workpiece to move; the tightening unit comprises a first bracket and an automatic tightening wrench, and the automatic tightening wrench is mechanically connected with the workbench through the first bracket and is used for realizing nut positioning and tightening. The invention has reasonable design, realizes the upgrade from manual tightening to automatic tightening, is convenient for batch production, has high working efficiency and saves labor cost.
Description
Technical Field
The invention relates to the technical field of mechanical assembly equipment, in particular to an automatic nut tightening device.
Background
In the manufacturing industries of automobiles, ships, aerospace, large machinery and the like, a large amount of assembly work is needed to be carried out on workpieces, along with automatic and intelligent improvement and lifting of a production line, some assembly links are needed to be carried out on automatic improvement and lifting, at present, the assembly is carried out in the assembly of parts of a rear suspension rear control arm assembly in a manual tightening assembly mode, the working efficiency is low, and in order to meet the requirement of mass production, an automatic nut tightening device is needed to be developed for the rear suspension rear control arm assembly to solve the problems.
Disclosure of Invention
The invention aims to provide an automatic nut tightening device, which realizes automatic nut tightening of a rear suspension rear control arm assembly by designing the whole structure of the device and utilizing a plurality of driving mechanisms, has high working efficiency and meets the specific assembly requirements of users.
In order to achieve the above object, the present invention provides an automatic nut tightening device, comprising: the device comprises a workbench, two sliding table assemblies, a first positioning and clamping unit, a second positioning and clamping unit, a tightening unit and a positioning unit, wherein the two sliding table assemblies, the tightening unit and the positioning unit are respectively and mechanically arranged on the workbench; the sliding table assembly comprises a first driving mechanism, a sliding platform, at least one sliding rail and at least one sliding block; the first driving mechanism is in driving connection with the sliding platform and is used for realizing the movement of the sliding platform, the sliding platform is in sliding fit connection with the sliding rail through the sliding block, and the sliding rail is mechanically fixed on the workbench; the first positioning and clamping unit is mechanically connected with the sliding platform on one sliding table assembly to realize positioning and clamping of the workpiece by the first positioning and clamping unit and drive the workpiece to move, and the second positioning and clamping unit is mechanically connected with the sliding platform on the other sliding table assembly to realize positioning and clamping of the workpiece by the second positioning and clamping unit and drive the workpiece to move; the tightening unit is positioned in the middle of the first positioning and clamping unit and the second positioning and clamping unit, the tightening unit comprises a first bracket and an automatic tightening wrench, and the automatic tightening wrench is mechanically connected with the workbench through the first bracket and used for realizing nut positioning and tightening.
Further, the first positioning and clamping unit includes; the device comprises a first bracket assembly, a second driving mechanism, a first compression bar, a first connecting piece, a first positioning block, a third driving mechanism, a first positioning base and a first positioning pin; the second driving mechanism and the third driving mechanism are respectively and mechanically connected with the first bracket component, the first bracket component is mechanically fixed on a sliding platform on the sliding table component, the first pressing rod is respectively hinged with the second driving mechanism and the first connecting piece and used for realizing the pressing and lifting actions of the first pressing rod on a workpiece, the first positioning block is positioned below one end of the first pressing rod and is mechanically connected with the first bracket component and used for positioning the workpiece, and the first positioning pin is in driving connection with the third driving mechanism and used for realizing the up-and-down movement of the first positioning pin in the first positioning base.
Preferably, the first positioning and clamping unit further comprises a first proximity switch, and the first proximity switch is electrically connected with an external control system.
Further, the second positioning and clamping unit comprises; the device comprises a second bracket assembly, a sixth driving mechanism, a second compression bar, a second connecting piece, a second positioning block, a fourth driving mechanism, a second positioning base and a second positioning pin; the sixth driving mechanism and the fourth driving mechanism are mechanically connected with the second bracket component, the second bracket component is mechanically fixed on the sliding platform on the other sliding table component, the second pressing rod is hinged with the sixth driving mechanism and the second connecting piece respectively and is used for realizing the pressing and lifting actions of the second pressing rod on the workpiece, the second positioning block is positioned below one end of the second pressing rod and is mechanically connected with the second bracket component and is used for positioning the workpiece, and the second positioning pin is in driving connection with the fourth driving mechanism and is used for realizing the up-and-down movement of the second positioning pin in the second positioning base.
Preferably, the second positioning and clamping unit further comprises a second proximity switch, and the second proximity switch is electrically connected with an external control system.
Further, the positioning unit includes: the second bracket, the fifth driving mechanism and the positioning assembly; the fifth driving mechanism is mechanically connected with the workbench through the second bracket, and the positioning assembly is in driving connection with the fifth driving mechanism and used for realizing the movement of the positioning assembly.
Further, the sliding table assembly further comprises at least one first stop block and at least one second stop block; the first stop block and the second stop block are respectively arranged at two ends of the sliding rail and are mechanically connected with the workbench for limiting the sliding platform.
Preferably, the sliding table assembly further comprises a sensor electrically connected to an external control system, the sensor being mechanically connected to the sliding platform.
The automatic nut tightening device provided by the invention has the beneficial effects that: the automatic nut tightening device is reasonable in design, the automatic tightening operation of workpieces is realized by the aid of the integral structural design of the automatic nut tightening device and the plurality of driving mechanisms, manual tightening is effectively replaced, manual-to-automatic upgrading is realized, batch production is convenient, working efficiency is high, labor cost is saved, and the assembly tightening requirement of specific workpieces of users is met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following brief description of the drawings of the embodiments will make it apparent that the drawings in the following description relate only to some embodiments of the present invention and are not limiting of the present invention.
Fig. 1 is a schematic perspective view of an automatic nut tightening device according to an embodiment of the present invention;
Fig. 2 is a schematic diagram of an operating state of an automatic nut tightening device according to an embodiment of the present invention;
fig. 3 is another schematic perspective view of an automatic nut tightening device according to an embodiment of the present invention;
fig. 4 is a schematic perspective view of a sliding table assembly according to an embodiment of the present invention;
fig. 5 is a schematic perspective view of a first positioning and clamping unit according to an embodiment of the present invention;
fig. 6 is a schematic perspective view of a second positioning and clamping unit according to an embodiment of the present invention;
fig. 7 is a schematic perspective view of a positioning unit according to an embodiment of the present invention;
Fig. 8 is a schematic perspective view of a rear suspension rear control arm assembly according to an embodiment of the present invention.
In the figure:
1. A work table; 2. a slipway assembly; 21. a first driving mechanism; 22. a sliding platform; 23. a slide rail; 24. a slide block; 25. a first stopper; 26. a second stopper; 27. a sensor; 3. a first positioning and clamping unit; 31. a first bracket assembly; 32. a second driving mechanism; 33. a first compression bar; 34. a first connector; 35. a first positioning block; 36. a third driving mechanism; 37. a first positioning base; 38. a first positioning pin; 39. a first proximity switch; 4. a second positioning and clamping unit; 41. a second bracket assembly; 42. a sixth driving mechanism; 43. a second compression bar; 44. a second connector; 45. a second positioning block; 46. a fourth driving mechanism; 47. a second positioning base; 48. a second positioning pin; 49. a second proximity switch; 5. a tightening unit; 51. a first bracket; 52. automatically tightening a wrench; 6. a positioning unit; 61. a second bracket; 62. a fifth driving mechanism; 63. a positioning assembly; 631. a gasket; 7. a rear suspension rear control arm assembly; 71. a first fitting; 72. a nut; 73. and a second fitting.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. It should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in the invention will be understood by those of ordinary skill in the art in a specific context.
An automatic nut tightening device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
Examples
Fig. 1 is a schematic perspective view showing an automatic nut tightening device according to an embodiment of the present invention; fig. 2 is a schematic diagram showing an operating state of an automatic nut tightening device according to an embodiment of the present invention; fig. 3 is another schematic perspective view of an automatic nut tightening device according to an embodiment of the present invention; fig. 4 shows a schematic perspective view of a sliding table assembly according to an embodiment of the present invention; fig. 5 shows a schematic perspective view of a first positioning and clamping unit according to an embodiment of the present invention; fig. 6 is a schematic perspective view of a second positioning and clamping unit according to an embodiment of the present invention; fig. 7 is a schematic perspective view of a positioning unit according to an embodiment of the present invention; fig. 8 shows a schematic perspective view of a rear suspension control arm assembly according to an embodiment of the present invention. As shown in fig. 1 to 8, the automatic nut tightening device provided in the embodiment of the present invention is mainly used for performing an automatic nut tightening operation on one end or both ends of a workpiece, and herein, we will describe a post-suspension control arm assembly 7 as an example, and the automatic nut tightening device provided in the embodiment of the present invention includes: the workbench 1, two sliding table assemblies 2, a first positioning and clamping unit 3, a second positioning and clamping unit 4, a tightening unit 5 and a positioning unit 6 are respectively and mechanically arranged on the workbench 1; specifically, the mounting manner of the two sliding table assemblies 2 can refer to fig. 4, wherein the sliding table assemblies 2 comprise at least one of a first driving mechanism 21, a sliding platform 22, a sliding rail 23 and a sliding block 24; here, preferably, each sliding table assembly 2 adopts two sliding rails 23, two sliding blocks 24 are matched on each sliding rail 23 to keep stable movement of the sliding table assembly 2, the first driving mechanism 21 is in driving connection with the sliding platform 22 to realize the movement of the sliding platform 22, the sliding platform 22 is in sliding fit connection with the sliding rails 23 through the sliding blocks 24 by controlling the first driving mechanism 21 to realize the horizontal left-right reciprocating movement of the sliding platform 22, the sliding blocks 24 are mechanically fixed on the workbench 1, the sliding blocks 24 are mechanically fixed on the lower surface of the sliding platform 22, and the section shape of the sliding blocks 24 is matched with the section shape of the sliding rails 23; preferably, the cross-sectional shape of the slider 24 may take the shape of a V, an i, a triangle, etc., or a combination of the above patterns, including but not limited to the above patterns, to achieve a single axial movement of the slider 24 along the direction of the slide rail 23; in the embodiment of the invention, taking the rear suspension rear control arm assembly 7 of the automobile as an example, the rear suspension rear control arm assembly 7 comprises a first assembly part 71, a nut 72 and a second assembly part 73; the first positioning and clamping unit 3 is mechanically connected with the sliding platform 22 on one sliding table assembly 2 to realize that the first positioning and clamping unit 3 is used for positioning and clamping a workpiece and driving the workpiece to move, so that the first positioning and clamping unit 3 drives the workpiece to move left and right, and the workpiece gradually penetrates into the nut 72; the second positioning and clamping unit 4 is mechanically connected with the sliding platform 22 on the other sliding table assembly 2 to realize that the second positioning and clamping unit 4 is used for positioning and clamping a workpiece and driving the workpiece to move, so that the second positioning and clamping unit 4 drives the workpiece to move left and right, and the workpiece gradually penetrates into the nut 72; the tightening unit 5 is positioned in the middle of the first positioning and clamping unit 3 and the second positioning and clamping unit 4 and is convenient for rotating and tightening the middle nut 72, the tightening unit 5 comprises a first bracket 51 and an automatic tightening wrench 52, the automatic tightening wrench 52 is mechanically connected with the workbench 1 through the first bracket 51, the automatic tightening wrench 52 is electrically controlled, the rotation of the end part of the automatic tightening wrench 52 is controlled through an external control system, the rotation of the nut 72 is synchronously driven, and the first positioning and clamping unit 3 and the second positioning and clamping unit 4 respectively drive the second assembly part 73 and the first assembly part 71 in a workpiece to move along with the first positioning and clamping unit 3 and the second positioning and clamping unit 4, so that the nut 72 and the second assembly part 73 are realized, The threaded connection of the first fitting 71 achieves automatic tightening of the work pieces.
In the automatic nut tightening device provided by the embodiment of the invention, the first positioning and clamping unit 3 comprises; the first bracket assembly 31, the second driving mechanism 32, the first compression bar 33, the first connecting piece 34, the first positioning block 35, the third driving mechanism 36, the first positioning base 37 and the first positioning pin 38; specifically, the second driving mechanism 32 and the third driving mechanism 36 are respectively and mechanically connected with the first bracket component 31, the first bracket component 31 is mechanically fixed on the sliding platform 22 on one sliding table component 2, so that the first bracket component 31 can move along with the sliding platform 22 to synchronously realize the movement of the whole first positioning and clamping unit 3, the first pressing rod 33 is respectively hinged with the second driving mechanism 32 and the first connecting piece 34 to realize the pressing and lifting actions of the first pressing rod 33 on the workpiece, the first pressing rod 33 rotates by taking the first connecting piece 34 as a lever fulcrum, and one end of the first pressing rod 33 is driven to move up and down by the second driving mechanism 32, so that the other end of the first pressing rod 33 can realize the pressing and lifting of the workpiece, thereby being convenient for positioning or loading and unloading the workpiece; the first positioning block 35 is positioned below one end of the first compression bar 33 and is mechanically connected with the first bracket component 31 for positioning the workpiece, and a positioning clamping groove is formed in the first positioning block 35, so that the workpiece can be fixed and positioned conveniently; the first positioning pin 38 is in driving connection with the third driving mechanism 36 and is used for achieving up-and-down movement of the first positioning pin 38 in the first positioning base 37, the workpiece is positioned through the first positioning base 37, the first positioning pin 38 can penetrate into a corresponding positioning hole in the workpiece, the rear suspension rear control arm assembly 7 is taken as an example, the first positioning pin 38 can penetrate into a corresponding cavity in the rear suspension rear control arm assembly 7, in fig. 8, the first positioning pin 38 can penetrate into a hole in one end of the second assembly 73, and therefore the second assembly 73 can be accurately positioned.
As a further improvement of the automatic nut tightening device provided by the embodiment of the invention, the first positioning and clamping unit 3 further comprises a first proximity switch 39, the first proximity switch 39 is electrically connected with an external control system, the first proximity switch 39 is used for identifying and sending a state signal of a workpiece, the first proximity switch 39 is mechanically installed at a proper position of the first positioning and clamping unit 3, so long as the state monitoring of the workpiece can be realized, the loading and unloading of the workpiece and the tightening operation of the nut 72 cannot be influenced, the reliability and the intelligent degree of the automatic nut tightening device are improved, the automatic and intelligent control of the automatic nut tightening device is conveniently realized, and misoperation is prevented.
In the automatic nut tightening device provided by the embodiment of the invention, the second positioning and clamping unit 4 comprises; the second bracket assembly 41, the sixth driving mechanism 42, the second compression bar 43, the second connecting piece 44, the second positioning block 45, the fourth driving mechanism 46, the second positioning base 47 and the second positioning pin 48; specifically, the sixth driving mechanism 42 and the fourth driving mechanism 46 are mechanically connected with the second bracket component 41, and the second bracket component 41 is mechanically fixed on the sliding platform 22 on the other sliding platform component 2, so that the second bracket component 41 can move along with the sliding platform 22, thereby realizing the overall left-right movement of the second positioning and clamping unit 4; the second pressing rod 43 is hinged with the sixth driving mechanism 42 and the second connecting piece 44 respectively and is used for realizing the pressing and lifting actions of the second pressing rod 43 on the workpiece, the second pressing rod 43 rotates by taking the second connecting piece 44 as a fulcrum of a lever, and the sixth driving mechanism 42 drives one end of the second pressing rod 43 to move up and down, so that the other end of the second pressing rod 43 realizes the pressing and lifting action on the workpiece, and the workpiece is convenient to position or assemble and disassemble; the second positioning block 45 is positioned below one end of the second compression bar 43 and is mechanically connected with the second bracket assembly 41 for positioning the workpiece, and the second positioning block 45 is provided with a positioning clamping groove for conveniently fixing and positioning the workpiece; the second positioning pin 48 is in driving connection with the fourth driving mechanism 46 and is used for realizing the up-and-down movement of the second positioning pin 48 in the second positioning base 47, positioning the workpiece through the second positioning base 47, and the second positioning pin 48 is penetrated into the position corresponding to the workpiece; in fig. 8, the second positioning pin 48 is inserted into a corresponding cavity on the rear suspension control arm assembly 7, and the second positioning pin 48 can be inserted into a hole at one end in the first fitting 71, so that the first fitting 71 is accurately positioned.
As a further improvement of the automatic nut tightening device provided by the embodiment of the invention, the second positioning and clamping unit 4 further comprises a second proximity switch 49, the second proximity switch 49 is electrically connected with an external control system, the second proximity switch 49 is used for identifying and sending a state signal of a workpiece, the second proximity switch 49 is mechanically arranged at a proper position on the second positioning and clamping unit 4, so long as the condition monitoring of the workpiece can be realized, the loading and unloading of the workpiece and the tightening operation of the nut 72 cannot be influenced, the reliability and the intelligent degree of the automatic nut tightening device are improved, and the automatic and intelligent control of the automatic nut tightening device is conveniently realized.
In the automatic nut tightening device provided by the embodiment of the invention, as a further improvement, the positioning unit 6 includes: a second bracket 61, a fifth driving mechanism 62, and a positioning assembly 63; specifically, the fifth driving mechanism 62 is mechanically connected with the workbench 1 through the second bracket 61, so that the fifth driving mechanism 62 is kept fixed, and the positioning assembly 63 is in driving connection with the fifth driving mechanism 62 to realize the movement of the positioning assembly 63, so that the positioning assembly 63 can penetrate into a cavity on a workpiece; taking the rear suspension rear control arm assembly 7 in fig. 8 as an example, the positioning assembly 63 cooperates with the second positioning pin 48 to position the first assembly member 71, so that the situation that the bearing capacity is poor and stress deformation occurs due to too small positioning hole on the first assembly member 71 is compensated.
As a further improvement of the automatic nut tightening device provided by the embodiment of the invention, the sliding table assembly 2 further comprises at least one first stop block 25 and at least one second stop block 26; the first stop block 25 and the second stop block 26 are respectively arranged at two ends of the sliding rail 23 and are mechanically connected with the workbench 1 for limiting the sliding platform 22 so as to limit the movement stroke of the sliding platform 22, and in the embodiment of the invention, two first stop blocks 25 and two second stop blocks 26 are respectively used in each sliding table assembly 2, so that the sliding platform 22 can be uniformly stressed and offset in a manner.
As a further improvement of the automatic nut tightening device provided by the embodiment of the invention, the sliding table assembly 2 further comprises a sensor 27, the sensor 27 is electrically connected with an external control system, the sensor 27 is mechanically connected with the sliding platform 22, and meanwhile, the sensor 27 corresponds to the position of the first stop block 25 or the second stop block 26 and is used for detecting the moving distance between the sliding platform 22 and the first stop block 25 or the second stop block 26, so that the tightening distance between two sides of a workpiece meets the set requirement, and taking fig. 8 as an example, the tightening distance between the first assembly part 71, the second assembly part 73 and the nut 72 in the rear suspension control arm assembly 7 meets the set requirement.
Preferably, the first driving mechanism 21, the second driving mechanism 32, the third driving mechanism 36, the fourth driving mechanism 42 and the fifth driving mechanism 46 are driven by air cylinders; of course, a motor drive method may be employed.
It should be noted that the automatic nut tightening device provided by the embodiment of the invention is suitable for automatic tightening operation on workpieces, particularly the rear suspension rear control arm assembly 7, and can be widely applied to manufacturing industries such as automobiles, ships, aerospace, large machinery and the like.
Compared with the prior art, the automatic nut tightening device provided by the invention has reasonable design, realizes automatic tightening operation on workpieces by designing the whole structure of the automatic nut tightening device and utilizing a plurality of driving mechanisms, effectively replaces manual tightening, realizes manual-to-automatic upgrading, has high working efficiency, saves labor cost, and meets the assembly tightening requirement of specific workpieces of users.
The following points need to be described:
(1) Unless otherwise defined, like reference numerals refer to like meanings in the embodiments of the invention and the figures.
(2) The drawings of the embodiments of the present invention relate only to the structures related to the embodiments of the present invention, and other structures may refer to the general designs.
(3) In the drawings for describing embodiments of the present invention, some of the structures in the drawings may be exaggerated or reduced for clarity, i.e., the drawings are not drawn to actual scale.
(4) The embodiments of the invention and the features of the embodiments can be combined with each other to give new embodiments without conflict.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. An automatic nut tightening device, comprising: the device comprises a workbench (1), two sliding table assemblies (2), a first positioning and clamping unit (3), a second positioning and clamping unit (4), a tightening unit (5) and a positioning unit (6), wherein the two sliding table assemblies (2), the tightening unit (5) and the positioning unit (6) are respectively and mechanically arranged on the workbench (1); the sliding table assembly (2) comprises a first driving mechanism (21), a sliding platform (22), at least one sliding rail (23) and at least one sliding block (24), wherein the first driving mechanism (21) is in driving connection with the sliding platform (22) and is used for realizing the movement of the sliding platform (22), the sliding platform (22) is in sliding fit connection with the sliding rail (23) through the sliding block (24), and the sliding rail (23) is mechanically fixed on the workbench (1); the first positioning and clamping unit (3) is mechanically connected with the sliding platform (22) on one sliding table assembly (2) to realize positioning and clamping of the first positioning and clamping unit (3) and drive the rear suspension rear control arm assembly (7) to move, and the second positioning and clamping unit (4) is mechanically connected with the sliding platform (22) on the other sliding table assembly (2) to realize positioning and clamping of the second positioning and clamping unit (4) and drive the rear suspension rear control arm assembly (7) to move; the tightening unit (5) is positioned in the middle of the first positioning and clamping unit (3) and the second positioning and clamping unit (4), the tightening unit (5) comprises a first bracket (51) and an automatic tightening wrench (52), and the automatic tightening wrench (52) is mechanically connected with the workbench (1) through the first bracket (51) to position and tighten nuts in the rear suspension rear control arm assembly (7); the rear suspension rear control arm assembly (7) comprises a first assembly part (71), a nut (72) and a second assembly part (73), the first positioning and clamping unit (3) drives the rear suspension rear control arm assembly (7) to move left and right, and the rear suspension rear control arm assembly (7) gradually penetrates into the nut (72); the second positioning and clamping unit (4) drives the rear suspension rear control arm assembly (7) to move left and right, and the rear suspension rear control arm assembly (7) gradually penetrates into the nut (72); the screw-down unit (5) rotates and screws down the middle nut (72), the external control system controls the end part of the automatic screw-down wrench (52) to rotate, the end part of the automatic screw-down wrench (52) synchronously drives the nut (72) to rotate, the first positioning and clamping unit (3) and the second positioning and clamping unit (4) respectively drive the second assembly part (73) and the first assembly part (71) to move, so that the threaded connection between the nut (72) and the second assembly part (73) and the first assembly part (71) is realized, and the automatic screw-down of the rear suspension rear control arm assembly (7) is realized;
The first positioning and clamping unit (3) comprises: the device comprises a first bracket assembly (31), a second driving mechanism (32), a first compression bar (33), a first connecting piece (34), a first positioning block (35), a third driving mechanism (36), a first positioning base (37) and a first positioning pin (38); the second driving mechanism (32) and the third driving mechanism (36) are respectively and mechanically connected with the first bracket component (31), the first bracket component (31) is mechanically fixed on the sliding platform (22) on one sliding table component (2), the first pressing rod (33) is respectively hinged with the second driving mechanism (32) and the first connecting piece (34) for realizing the pressing and lifting actions of the first pressing rod (33) on the rear suspension control arm assembly (7), the first positioning block (35) is positioned below one end of the first pressing rod (33) and is mechanically connected with the first bracket component (31) for positioning the rear suspension control arm assembly (7), and the first positioning pin (38) is in driving connection with the third driving mechanism (36) for realizing the up-and-down movement of the first positioning pin (38) in the first positioning base (37); the first positioning and clamping unit (3) further comprises a first proximity switch (39), and the first proximity switch (39) is electrically connected with an external control system;
The second positioning and clamping unit (4) comprises: the second bracket assembly (41), the sixth driving mechanism (42), the second compression bar (43), the second connecting piece (44), the second positioning block (45), the fourth driving mechanism (46), the second positioning base (47) and the second positioning pin (48); the sixth driving mechanism (42), the fourth driving mechanism (46) and the second bracket component (41) are mechanically connected, the second bracket component (41) is mechanically fixed on the sliding platform (22) on the other sliding table component (2), the second pressing rod (43) is hinged with the sixth driving mechanism (42) and the second connecting piece (44) respectively and is used for realizing the pressing and lifting actions of the second pressing rod (43) on the rear suspension rear control arm assembly (7), the second positioning block (45) is positioned below one end of the second pressing rod (43) and is mechanically connected with the second bracket component (41) and is used for positioning the rear suspension rear control arm assembly (7), and the second positioning pin (48) is in driving connection with the fourth driving mechanism (46) and is used for realizing the up-and-down movement of the second positioning pin (48) in the second positioning base (47); the second positioning and clamping unit (4) further comprises a second proximity switch (49), and the second proximity switch (49) is electrically connected with an external control system.
2. An automatic nut tightening device according to claim 1, characterized in that the positioning unit (6) comprises: a second bracket (61), a fifth driving mechanism (62) and a positioning assembly (63); the fifth driving mechanism (62) is mechanically connected with the workbench (1) through the second bracket (61), and the positioning assembly (63) is in driving connection with the fifth driving mechanism (62) for realizing the movement of the positioning assembly (63).
3. An automatic nut tightening device according to any one of claims 1-2, characterized in that the slip assembly (2) further comprises at least one of a first stop (25), a second stop (26); the first stop block (25) and the second stop block (26) are respectively arranged at two ends of the sliding rail (23) and are mechanically connected with the workbench (1) for limiting the sliding platform (22).
4. An automatic nut tightening device according to claim 3, characterized in that the slip assembly (2) further comprises a sensor (27), the sensor (27) being electrically connected to an external control system, the sensor (27) being mechanically connected to the slip platform (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN109158865A (en) * | 2018-11-19 | 2019-01-08 | 中国科学院沈阳自动化研究所 | A kind of automatic screwing device |
| CN208483489U (en) * | 2018-06-09 | 2019-02-12 | 苏州科技大学 | A kind of the turn of the screw equipment |
| CN209811691U (en) * | 2019-04-01 | 2019-12-20 | 比亚迪股份有限公司 | Control arm assembly quality |
| CN215999399U (en) * | 2021-09-27 | 2022-03-11 | 浙江万向系统有限公司 | Control arm nut screw-in tool |
| CN216097186U (en) * | 2021-07-13 | 2022-03-22 | 玛斯特轻量化科技(天津)有限公司 | Adjustable automatic position-changing clamping platform for support welding |
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| JP2014124722A (en) * | 2012-12-26 | 2014-07-07 | Nissan Motor Co Ltd | Automatic thread fastening device |
| JP2015009337A (en) * | 2013-07-01 | 2015-01-19 | 日東精工株式会社 | Automatic fastening machine and fastening height position setting method of the same |
| CN205363214U (en) * | 2015-12-25 | 2016-07-06 | 昂华（上海）自动化工程股份有限公司 | Automatic device of screwing up of engine flywheel construction bolt |
| CN205834611U (en) * | 2016-07-07 | 2016-12-28 | 苏州威诺尔检测设备有限公司 | The clamping device of the up-to-date assembly of tightening machine |
| CN208246220U (en) * | 2018-04-27 | 2018-12-18 | 杭州蕙勒智能科技有限公司 | A kind of automatic screwing device |
| CN208262250U (en) * | 2018-05-21 | 2018-12-21 | 常熟市研拓自动化科技有限公司 | A kind of nut Auto-lock Machine structure |
| CN208483489U (en) * | 2018-06-09 | 2019-02-12 | 苏州科技大学 | A kind of the turn of the screw equipment |
| CN109158865A (en) * | 2018-11-19 | 2019-01-08 | 中国科学院沈阳自动化研究所 | A kind of automatic screwing device |
| CN209811691U (en) * | 2019-04-01 | 2019-12-20 | 比亚迪股份有限公司 | Control arm assembly quality |
| CN216097186U (en) * | 2021-07-13 | 2022-03-22 | 玛斯特轻量化科技(天津)有限公司 | Adjustable automatic position-changing clamping platform for support welding |
| CN215999399U (en) * | 2021-09-27 | 2022-03-11 | 浙江万向系统有限公司 | Control arm nut screw-in tool |
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| CN114559245A (en) | 2022-05-31 |
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