CN116728061B

CN116728061B - Tightening assembly equipment and working method thereof

Info

Publication number: CN116728061B
Application number: CN202310692546.7A
Authority: CN
Inventors: 徐伟
Original assignee: Shanghai Yinchin Automation Technology Co ltd
Current assignee: Shanghai Yinchin Automation Technology Co ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2024-05-03
Anticipated expiration: 2043-06-12
Also published as: CN116728061A

Abstract

The application discloses a tightening assembly device and a working method thereof, wherein the tightening assembly device can tighten a nut on a stud, the tightening assembly device comprises a mounting seat, a tightening member, a tightening depth detection mechanism and a controller, the tightening member comprises a tightening assembly and a driving assembly, the tightening assembly is provided with a mounting hole, the tightening assembly is also provided with an assembly hole, a limit step is formed on the inner wall of the assembly hole, which is close to one end of the mounting hole, the tightening depth detection mechanism comprises a pushed member and a detection piece, and the pushed member comprises a pushed piece. According to the application, the nut can be screwed on the stud, the situation that the nut is loosened or excessively assembled to cause any damage to the nut and the stud due to the fact that the position of the nut assembled on the stud is wrong because the number of turns of the nut does not reach the standard is effectively avoided, the screwing operation and the screwing depth detection operation can be synchronously performed, and the working efficiency is effectively improved.

Description

Tightening assembly equipment and working method thereof

Technical Field

The invention relates to the technical field of component assembly, in particular to tightening assembly equipment and a working method thereof.

Background

Threaded connections are a widely used form of removable, fixed assembly, and are used in most equipment and products. At present, in the process of executing the threaded assembly of the nut on the stud, in order to adapt to the mass production requirements, the screwing equipment replaces the traditional manual screwing. When the screwing equipment operates, the nut preset at the end part of the stud is clamped and rotated, so that the nut is driven to move on the periphery of the stud and finally screwed on the stud. In this process, the operation of pre-assembling the nut on the end of the stud needs to be performed manually, and because of errors in manual operation, there is a situation that the actual position of the nut does not correspond to the preset position, in addition, the number of turns of the twisting rod of the twisting device is set to be consistent all the time, which causes errors in the number of turns of the nut twisting on the stud, and affects the overall quality, i.e. the number of turns of the nut is too small and not yet tightened on the stud or the number of turns of the nut is too excessive, resulting in any damage to the nut and the stud.

Therefore, after the screwing operation is performed, the whole body is required to be transferred, the screwing depth detection device is used for measuring whether the position of the nut assembled on the stud meets the requirement, and once the position of the nut assembled on the stud does not meet the requirement, the screwing device is required to continuously perform the screwing operation or replace the damaged stud and/or the stud to re-perform the assembling operation, so that the assembling complexity is increased seriously, and the production cost is increased.

Disclosure of Invention

The invention has the advantages that the screw-down assembly equipment and the working method thereof are provided, the screw-down assembly equipment can screw down the nut on the stud, and the situation that the nut and the stud are damaged at will due to loosening or excessive assembly caused by incorrect assembly due to incorrect assembly of the position of the nut assembled on the stud caused by the fact that the number of turns of the nut is not up to standard is effectively avoided.

The screwing assembly equipment and the working method thereof have the advantages that screwing operation and screwing depth detection operation can be synchronously performed, and working efficiency is effectively improved.

To achieve at least one of the above advantages, the present invention provides a tightening apparatus capable of tightening a nut to a stud, the tightening apparatus comprising:

A mounting base;

The screwing component comprises a screwing assembly and a driving assembly, the driving assembly is mounted on the mounting seat, the screwing assembly is mounted on the driving assembly, the screwing assembly can rotate under the driving action of the driving assembly, the screwing assembly is provided with a mounting hole, the shape and the size of the mounting hole are both adapted to the nut, the screwing assembly can drive the nut to rotate on the periphery of the stud through sleeving the nut, when the screwing assembly drives the nut to rotate so that the nut moves downwards along the stud, the screwing assembly can move downwards together with the nut, and the screwing assembly is further provided with an assembly hole which is coaxial and communicated with the mounting hole, and a limit step is formed on the inner wall of one end of the assembly hole, which is close to the mounting hole;

the screwing depth detection mechanism comprises a pushed member and a detection piece, the pushed member comprises a pushed piece, the size of the assembly hole is matched with that of the pushed piece, the limiting step is used for supporting the pushed piece, the pushed piece can be kept to be located on the limiting step and partially extend to the mounting hole under the condition of no external force, when the nut is rotated to be kept at the same height with the end face of the stud, the pushed piece located on the limiting step is kept to be abutted with the stud, and when the nut is driven by the screwing assembly to be screwed on the stud, the pushed piece is abutted by the stud to move upwards in the assembly hole relative to the screwing assembly, and the detection piece is connected with the screwing assembly;

The controller is in communication connection with the detection piece, the driving component is controllably connected with the controller, the detection piece is arranged to detect displacement changes of the pushed component relative to the screwing component and feed back the displacement changes to the controller, and the controller can selectively control the driving component to operate according to feedback of the detection piece.

According to an embodiment of the present invention, at least one through groove communicating with the assembly hole is formed on the circumferential side of the screwing assembly, the through groove has a predetermined length in the axial direction of the assembly hole, the pushed member further includes a connection assembly, the connection assembly partially penetrates through the through groove and extends into the assembly hole to be connected with the pushed member, when the pushed member is blocked by the stud to move up in the assembly hole relative to the screwing assembly, the connection assembly is driven by the pushed member to move along the through groove together, the detection member corresponds to the connection assembly, and the detection member detects the displacement of the connection assembly to determine the degree of movement of the pushed member relative to the screwing assembly.

According to an embodiment of the present invention, the driving assembly includes a driving member and a driving shaft, the driving member is disposed on the mounting seat, the driving shaft is mounted on the driving member, the driving member can be driven by the driving member to rotate, the driving shaft forms a clamping channel at an axial position thereof, the screwing assembly is clamped in the clamping channel and can be driven to move along the clamping channel relative to the driving shaft, the screwing assembly can be driven by the driving shaft to rotate, the screwing assembly can be moved up along the clamping channel by pressing the nut after being sleeved on the nut, and the screwing assembly is gradually moved down along the clamping channel by gravity and is always connected with the nut when the screwing assembly drives the nut to rotate and be screwed on the stud.

According to an embodiment of the present invention, the tightening assembly device further includes a connection base including a base body having a mounting channel and at least one mounting hole axially parallel to the mounting channel, and a connection structure located in a radial direction of the mounting channel, the screwing assembly penetrating the mounting channel, the screwing assembly being sized to the connection structure, the mounting base having at least one guide post, the guide post being snap-fitted to the mounting hole, the base body being slidably connected to the guide post, the screwing assembly being rotatably mounted to the base body by being engaged with the connection structure and being restrained by the guide post based on the base body, and the screwing assembly being capable of driving the base body to move up and down along the guide post, the connecting component comprises a clamping piece, a connecting piece and a linkage piece, wherein the clamping piece penetrates through the through groove and is connected with the pushed piece positioned in the assembly hole, one end of the clamping piece, which is far away from the pushed piece, is connected with the connecting piece, the base is also provided with a through hole axially parallel to the mounting channel, the linkage piece penetrates through the base in a mode of being inserted into the through hole, one end part of the linkage piece is connected with the connecting piece, the other end part of the linkage piece is always kept at the top of the base, the linkage piece can be driven by the pushed piece to move up and down along the through hole through the transmission of acting force of the clamping piece and the connecting piece, the detection piece is mounted on the base, when the screwing component presses the nut and is moved up along the clamping channel of the driving shaft under the action of the reacting force, the screwing assembly drives the screwing depth detection mechanism to synchronously move upwards through the connecting seat.

According to an embodiment of the present invention, the tightening assembly device further includes a restoring member, where the restoring member is installed between the pushed member and the screwing assembly or the base, and the restoring member can change elastically when the pushed member is abutted by the stud and moves upward relative to the screwing assembly, and the pushed member can restore under the action of self gravity and the elastic action of the restoring member without the action of external force.

According to an embodiment of the present invention, the tightening device further includes a suction member mounted to the mounting hole, the suction member being configured to fix the nut in the mounting hole.

According to an embodiment of the present invention, the tightening apparatus further includes an apparatus frame body and a power supply member, the mounting base is mounted on the apparatus frame body, the power supply member is connected with the mounting base and can drive the mounting base to move, the apparatus frame body includes a support frame and a connection frame, the mounting base is connected to the connection frame, the support frame has at least one X-axis guiding structure, the connection frame is movably mounted on the support frame along the X-axis guiding structure, the power supply member includes a first power supply assembly, the connection frame is connected with the first power supply assembly, and the first power supply assembly is configured to drive the connection frame to move along the X-axis guiding structure, thereby driving the mounting base to move.

According to an embodiment of the present invention, the connecting frame includes a cross arm and a connector, the cross arm is slidably mounted on the X-axis guiding structure, the mounting base is mounted on the connector, the cross arm has at least one Y-axis guiding structure, the connector is movably mounted on the cross arm along the Y-axis guiding structure, the power supply member includes a second power supply assembly, the connector is connected with the second power supply assembly, and the second power supply assembly is configured to drive the connector to move along the Y-axis guiding structure, thereby driving the mounting base to move.

According to an embodiment of the invention, the interface has at least one Z-axis guiding structure, the mount is movably mounted to the interface along the Z-axis guiding structure, the power supply member comprises a third power supply assembly, the mount is connected to the third power supply assembly, and the third power supply assembly is configured to drive the mount to move along the Z-axis guiding structure.

To achieve at least one of the above advantages, the present invention provides a working method of tightening an assembly device, comprising the steps of:

the screwing assembly corresponds to a nut and is sleeved on the nut, the screwing assembly is driven by the driving assembly to rotate so as to drive the nut to rotate on the periphery of the stud, and the screwing assembly moves downwards together with the nut in the process of screwing the nut on the stud so as to ensure that the nut can be always driven by the screwing assembly to be screwed on the stud;

The pushed piece of the pushed component is abutted with the stud to enable the stud to move upwards relative to the screwing assembly, and the detection piece detects the displacement change of the pushed component and feeds back the displacement change to the controller;

the controller selectively controls operation of the drive assembly based on feedback from the sensing element to ensure that the nut is tightened to the stud.

Drawings

Fig. 1 shows a schematic view of the screw-on fitting device according to the invention.

Fig. 2 shows a partial structural perspective view of the screw-fitting device according to the invention.

Fig. 3 shows a partial structural cross-section of the screw-fitting device according to the invention.

Fig. 4 shows another partial structural section of the screw-fitting device according to the invention.

Fig. 5 shows a sectional view of another partial structure of the screw-fitting device according to the invention in a state.

Fig. 6 shows a sectional view of another partial structure of the screw fitting apparatus according to the present invention in another state.

Fig. 7 shows another partial structural cross-section of the screw-fitting device according to the invention.

Fig. 8 shows a further partial perspective view of the screw-on fitting device according to the invention.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present invention.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Referring to fig. 1 to 3, a tightening apparatus according to a preferred embodiment of the present invention, which is capable of tightening a nut to a stud, will be described in detail below.

The tightening assembly device comprises a mounting seat 10 and a screwing member 20, wherein the screwing member 20 comprises a screwing assembly 21 and a driving assembly 22, the driving assembly 22 is mounted on the mounting seat 10, the screwing assembly 21 is mounted on the driving assembly 22, and the screwing assembly 21 can be driven to rotate by the driving assembly 22. The screwing assembly 21 is provided with a mounting hole 2101, the shape and the size of the mounting hole 2101 are matched with those of the nut, and the screwing assembly 21 can drive the nut to rotate on the periphery of the stud through sleeving the nut.

It should be noted that, when the screwing assembly 21 drives the nut to rotate so that the nut moves down along the stud, the screwing assembly 21 can move down together with the nut, so as to ensure that the nut can be always screwed in place under the driving action of the screwing assembly 21.

Referring to fig. 3 to 6, the tightening assembly apparatus further includes a screw depth detection mechanism 30, the screw depth detection mechanism 30 includes a pushed member 31, the pushed member 31 includes a pushed member 311, the screw assembly 21 further includes an assembly hole 2102 coaxial with and communicating with the mounting hole 2101, the size of the assembly hole 2102 is adapted to the pushed member 311, and an inner wall of the assembly hole 2102 near one end of the mounting hole 2101 forms a limiting step 211. The limiting step 211 is used for supporting the pushed piece 311, so as to prevent the pushed piece 311 from sliding out of the assembly hole 2102 through the mounting hole 2101. The pushed piece 311 can stay seated on the limit step 211 and partially extend to the mounting hole 2101 without being subjected to external force.

When the nut is rotated to maintain the same height as the end surface of the stud, the pushed piece 311 seated on the limit step 211 is kept in contact with the stud. During the process that the nut is driven by the screwing assembly 21 to be screwed on the stud, the pushed piece 311 is abutted by the stud and moves upwards in the assembly hole 2102 relative to the screwing assembly 21.

Referring to fig. 1 to 6, the screwing depth detection mechanism 30 further includes a detection member 32, and the detection member 32 is connected to the screwing assembly 21. The screw-on assembly apparatus further includes a controller 40, the controller 40 being in communication with the sensing element 32, the drive assembly 22 being controllably connected to the controller 40. The detecting piece 32 is configured to detect a displacement change of the pushed member 31 relative to the screwing component 21 and feed back the displacement change to the controller 40, and the controller 40 can selectively control the driving component 22 to operate according to the feedback of the detecting piece 32, so as to ensure that the screwing component 21 of the driving component 22 can drive the nut to be screwed at a preset position of the stud, so that the situation that the nut is assembled at the position of the stud by mistake due to the fact that the number of turns of the nut does not reach the standard, and the nut is loosened or excessively assembled due to the fact that the nut is damaged at will due to the fact that the assembly is not completed in place is avoided. In addition, in the process, the screwing operation and the screwing depth detection operation are synchronously performed, so that the working efficiency is effectively improved, and compared with the prior art, the operation is more convenient without transferring reworking after detection.

Preferably, the detecting member 32 is implemented as a displacement sensor.

Referring to fig. 2 to 6, preferably, at least one through slot 2103 communicating with the assembly hole 2102 is formed at a circumferential side of the screwing assembly 21, the through slot 2103 has a predetermined length in an axial direction of the assembly hole 2102, and the pushed member 31 further includes a connection assembly 312, and the connection assembly 312 partially penetrates the through slot 2103 and extends into the assembly hole 2102 to be connected with the pushed member 311.

When the pushed piece 311 is blocked by the stud to move upwards in the assembly hole 2102 relative to the screwing assembly 21, the connecting assembly 312 is driven by the pushed piece 311 to move along the through groove 2103. The detecting member 32 corresponds to the connecting assembly 312, and the detecting member 32 detects the displacement of the connecting assembly 312 to determine the degree of movement of the pushed member 311 relative to the screwing assembly 21, so as to determine the screwing depth of the nut relative to the stud.

Referring to fig. 2 to 6, the screwing assembly 21 includes a driving member 212 and a screwing member 213, the mounting hole 2101 and the fitting hole 2102 are formed at the screwing member 213, and the through groove 2103 is formed at the driving member 212 and/or the screwing member 213. The driver 212 is connected to the driving assembly 22, and an end of the driver 212 away from the driving assembly 22 is connected to the screwing piece 213.

Preferably, the driver 212 and the screwing piece 213 are detachably connected, so that the screwing pieces 213 with different sizes of the mounting holes 2101 are selected according to the actual types of the nuts, so that the screwing pieces are suitable for screwing the nuts with different types.

Referring to fig. 2 to 6, the driving assembly 22 includes a driving member 221 and a driving shaft 222, the driving member 221 is disposed on the mounting base 10, the driving shaft 222 is mounted on the driving member 221, and the driving member 221 can be driven to rotate by the driving member 221. The driving shaft 222 forms a card passage 22201 at an axial position thereof, and the twisting assembly 21 is held in engagement with the card passage 22201 and can be driven to move along the card passage 22201 with respect to the driving shaft 222. The screwing assembly 21 can be driven to rotate by the driving shaft 222.

Preferably, the drive 221 is implemented as a motor without an output shaft.

The screwing assembly 21 can be moved up along the click path 22201 by pressing the nut to receive a reverse force after being coupled to the nut. In the process that the screwing assembly 21 drives the nut to rotate and screw down the stud, the screwing assembly 21 gradually moves downwards along the clamping channel 22201 under the action of gravity and is always connected with the nut, and at the moment, the screwing assembly 21 is not required to be additionally controlled to move, so that the situation that the screwing assembly 21 and the nut move out of synchronization and are separated from each other and the nut is separated from each other is effectively avoided, and the nut can be driven by the screwing assembly 21 to rotate and screw down the stud all the time.

Referring to fig. 2 and 7, the screw fitting apparatus further includes a connection holder 50, and the connection holder 50 includes a holder body 51 and a connection structure 52. The base 51 has a mounting channel 5101 and at least one mounting hole 5102 axially parallel to the mounting channel 5101, the connecting structure 52 is located in a radial direction of the mounting channel 5101, the screwing assembly 21 penetrates through the mounting channel 5101, and the size of the screwing assembly 21 is adapted to the connecting structure 52. The mounting base 10 has at least one guide post 11, the guide post 11 is clamped in the mounting hole 5102, and the base 51 is slidably connected to the guide post 11.

The screwing assembly 21 can be rotatably mounted on the seat body 51 by being matched with the connecting structure 52 and limited by the guide post 11 based on the seat body 51, and the screwing assembly 21 can drive the seat body 51 to move up and down along the guide post 11.

Preferably, the connection structure 52 is implemented as a bearing, at this time, the screwing assembly 21 penetrates through the bearing and is connected with the base body 51 through the bearing, the inner ring of the bearing can rotate synchronously with the screwing assembly 21, the outer ring of the bearing is kept abutting against the inner wall of the mounting channel 5101, and the screwing assembly 21 can drive the base body 51 to move along the guide post 11 through the bearing.

As a deformable, the connection structure 52 is implemented as a collar groove, which communicates with the mounting channel 5101, the collar groove being located at the periphery of the mounting channel 5101, and the screwing assembly 21 is partially clamped to the collar groove while penetrating the mounting channel 5101. The screwing assembly 21 drives the seat body 51 to move along the guide post 11 through being in clamping fit with the seat body 51, and is rotatably mounted on the seat body 51 based on the limit action of the guide post 11 on the seat body 51.

Referring to fig. 2 to 6, further, the connection assembly 312 includes a fastening member 3121, a connection member 3122 and a linkage member 3123, wherein the fastening member 3121 penetrates the through slot 2103 and is connected to the pushed member 311 in the assembly hole 2102, and an end of the fastening member 3121 away from the pushed member 311 is connected to the connection member 3122. The base 51 further has a through hole 5103 axially parallel to the mounting channel 5101, the linking member 3123 is inserted through the base 51 in a manner of being inserted into the through hole 5103, one end of the linking member 3123 is connected to the connecting member 3122, and the other end is always kept at the top of the base 51. The linking member 3123 can be driven by the pushed member 311 to move up and down along the through hole 5103 by the force transmitted by the engaging member 3121 and the connecting member 3122. The detecting member 32 is mounted to the housing 51. When the screwing assembly 21 applies pressure to the nut to move up along the click channel 22201 of the driving shaft 222 by a reaction force, the screwing assembly 21 drives the screwing depth detecting mechanism 30 to move up synchronously through the connecting seat 50.

Preferably, the portion of the linkage member 3123 that is held on top of the base 51 corresponds to the detecting member 32, and the detecting member 32 is used to detect a change in displacement of the linkage member 3123. When the screwing assembly 21 rotates the nut and moves down along the clamping channel 22201, the pushed piece 311 is blocked by the stud, so that the pushed piece 311 moves up relative to the screwing assembly 21, the pushed piece 311 drives the connecting assembly 312 to move up synchronously, and at this time, the detecting piece 32 detects the displacement change of the linking piece 3123 and feeds back to the controller 40, so that the controller 40 controls the degree of screwing operation.

Referring to fig. 2, preferably, the end of the linking member 3123 near the connecting member 3122 has a bayonet 312301, and the distance between two opposite side walls of the bayonet 312301 is greater than the diameter of the screwing assembly 21. The linking member 3123 is supported by the connection member 3122, and the pushed member 311 can push the linking member 3123 up along the through-hole 5103 through the connection member 3122. In this way, when the screwing member 213 having the different sizes of the mounting holes 2101 is replaced, the connection member 3122 and the linking member 3123 do not need to be assembled and disassembled, so that the assembling and disassembling steps are simplified, and the operation is more convenient.

Referring to fig. 3 to 6, the tightening assembly apparatus further includes a suction member 60, the suction member 60 is mounted in the mounting hole 2101, and the suction member 60 is used for fixing the nut in the mounting hole 2101, so as to increase the connection firmness of the nut and the screwing assembly 21, and ensure that the screwing assembly 21 is not separated from the mounting hole 2101 at the initial stage of screwing the nut.

Preferably, when the nut is implemented as a magnetically attractive material, the attractive element 60 is implemented as a magnet that secures the nut within the mounting hole 2101 by magnetic attraction.

As a deformability, the suction member 60 is implemented as a suction cup which communicates with a negative pressure device, and sucks the nut by negative pressure to fix the nut in the mounting hole 2101.

Referring to fig. 3 to 6, the tightening assembly apparatus further includes a restoring member 70, wherein the restoring member 70 is installed between the pushed member 31 and the screwing assembly 21 or the seat 51, the restoring member 70 is capable of elastically changing when the pushed member 31 is abutted by the stud and moves upward relative to the screwing assembly 21, and the pushed member 31 is capable of restoring under the action of self gravity and the elastic action of the restoring member 70 without being affected by external force, so that the subsequent screwing depth detection operation is performed.

Preferably, the restoring element 70 is embodied as a spring.

Referring to fig. 1 and 8, the tightening apparatus further includes an apparatus frame 80 and a power supply member 90, the mount 10 is mounted to the apparatus frame 80, and the power supply member 90 is connected to the mount 10 and can drive the mount 10 to move so that the tightening member 20 can sequentially correspond to the nuts at different positions to perform the tightening operation.

The device frame 80 includes a support frame 81 and a connection frame 82, the mounting base 10 is connected to the connection frame 82, the support frame 81 has at least one X-axis guiding structure 811, and the connection frame 82 is movably mounted to the support frame 81 along the X-axis guiding structure 811.

The power supply member 90 includes a first power supply assembly 91, the connecting frame 82 is connected to the first power supply assembly 91, and the first power supply assembly 91 is configured to drive the connecting frame 82 to move along the X-axis guiding structure 811, and further drive the mounting base 10 to move, so that the screwing member 20 moves to perform screwing operations on the nuts at different positions in the X-axis direction.

Preferably, the X-axis guiding structure 811 is implemented as a rail.

Preferably, the first power supply assembly 91 is implemented as a cylinder.

The link 82 includes a cross arm 821 and an abutment 822, the cross arm 821 being slidably mounted to the X-axis guide 811, the mount 10 being mounted to the abutment 822. The bridge 821 has at least one Y-axis guide 8211, and the interface 822 is movably mounted to the bridge 821 along the Y-axis guide 8211.

The power supply member 90 includes a second power supply assembly 92, the connector 822 is connected to the second power supply assembly 92, and the second power supply assembly 92 is configured to drive the connector 822 to move along the Y-axis guiding structure 8211, and further drive the mount 10 to move, so as to move in the X-axis direction based on the mount 10, so that the turning member 20 can move in any direction of the X-axis direction and the Y-axis direction, so as to perform a tightening operation on the nut in any direction of the X-axis direction and the Y-axis direction.

Preferably, the Y-axis guiding structure 8211 is implemented as a rail.

Preferably, the second power supply assembly 92 is implemented as a cylinder.

The interface 822 has at least one Z-axis guide 8221, and the mount 10 is movably mounted to the interface 822 along the Z-axis guide 8221. The power supply member 90 includes a third power supply assembly 93, the mounting base 10 is connected to the third power supply assembly 93, and the third power supply assembly 93 is configured to drive the mounting base 10 to move along the Z-axis guiding structure 8221 so as to move in any direction of the X-axis, Y-axis and Z-axis based on the mounting base 10, so that the screwing member 20 can move in any direction of the X-axis, Y-axis and Z-axis to perform screwing operation on the nut in any direction of the X-axis, Y-axis and Z-axis.

Preferably, the Z-axis guide structure 8221 is implemented as a guide rail.

Preferably, the third power supply assembly 93 is implemented as a cylinder.

The working method for tightening the assembly equipment is provided, and comprises the following steps:

the screwing assembly 21 corresponds to a nut and is sleeved on the nut, the screwing assembly 21 is driven by the driving assembly 22 to rotate so as to drive the nut to rotate on the periphery of the stud, and the screwing assembly 21 moves downwards together with the nut in the process of screwing the nut on the stud so as to ensure that the nut can be always driven by the screwing assembly 21 to be screwed on the stud;

The pushed piece 311 of the pushed member 31 is abutted against the stud to move upwards relative to the screwing assembly 21, and the detection piece 32 detects the displacement change of the pushed member 31 and feeds back to the controller 40;

The controller 40 selectively controls operation of the drive assembly 22 based on feedback from the sensing element 32 to ensure that the nut is tightened against the stud.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.

Claims

1. Tightening assembly apparatus capable of tightening a nut to a stud, the tightening assembly apparatus comprising:

A mounting base;

The controller is in communication connection with the detection piece, the driving assembly is controllably connected to the controller, the detection piece is arranged to detect displacement changes of the pushed component relative to the screwing assembly and feed back the displacement changes to the controller, and the controller can selectively control the driving assembly to operate according to feedback of the detection piece; the peripheral side of the screwing assembly forms at least one through groove communicated with the assembly hole, the through groove has a preset length in the axial direction of the assembly hole, the pushed component also comprises a connecting assembly, the connecting assembly partially penetrates the through groove and extends into the assembly hole to be connected with the pushed component, when the pushed piece is blocked by the stud to move upwards relative to the screwing assembly in the assembly hole, the connecting assembly is driven by the pushed piece to move along the through groove, the detecting piece corresponds to the connecting assembly, and the detecting piece detects the displacement of the connecting assembly to determine the moving degree of the pushed piece relative to the screwing assembly; the driving assembly comprises a driving piece and a driving shaft, the driving piece is arranged on the mounting seat, the driving shaft is arranged on the driving piece, the driving piece can be driven by the driving piece to rotate, a clamping channel is formed at the axial position of the driving shaft, the screwing assembly is clamped in the clamping channel and can be driven to move along the clamping channel relative to the driving shaft, the screwing assembly can be driven by the driving shaft to rotate, the screwing assembly can be pushed up along the clamping channel by pressing the nut after being sleeved on the nut, and in the process that the screwing assembly drives the nut to rotate and is screwed on the stud, the screwing assembly is gradually moved down along the clamping channel under the action of gravity and is always connected with the nut; the tightening assembly device further comprises a connecting seat, the connecting seat comprises a seat body and a connecting structure, the seat body is provided with a mounting channel and at least one mounting hole axially parallel to the mounting channel, the connecting structure is positioned in the radial direction of the mounting channel, the screwing assembly penetrates through the mounting channel, the size of the screwing assembly is adapted to the connecting structure, the mounting seat is provided with at least one guide post, the guide post is clamped in the mounting hole, the seat body is slidably connected with the guide post, the screwing assembly can be rotatably mounted on the seat body by being matched with the connecting structure and limited by the guide post based on the seat body, the screwing assembly can drive the seat body to move up and down along the guide post, the connecting assembly comprises a clamping piece, a connecting piece and a linkage piece, the clamping piece penetrates through the through groove and is connected with the pushed piece positioned in the assembly hole, one end of the clamping piece, which is far away from the pushed piece, is connected with the connecting piece, the base body is also provided with a through hole which is axially parallel to the mounting channel, the linkage piece penetrates through the base body in a mode of being inserted into the through hole, one end part of the linkage piece is connected with the connecting piece, the other end part of the linkage piece is always kept at the top of the base body, the linkage piece can be driven by the pushed piece to move up and down along the through hole through the clamping piece and the connecting piece to transmit the acting force, the detection piece is mounted on the base body, when the screwing component presses the nut to be upwards moved along the clamping channel of the driving shaft by the reacting force, the screwing assembly drives the screwing depth detection mechanism to synchronously move upwards through the connecting seat.

2. The tightening assembly device according to claim 1, further comprising a return member mounted between the pushed member and the screwing assembly or the seat, the return member being capable of elastically changing when the pushed member is moved up relative to the screwing assembly by abutment of the stud, the pushed member being capable of returning under the action of its own weight and the elastic action of the return member without the action of an external force.

3. The screw-fitting apparatus of claim 1 further comprising a suction fitting mounted to said mounting hole for securing said nut within said mounting hole.

4. The tightening assembly device of claim 1, further comprising a device frame and a power supply member, the mount being mounted to the device frame, the power supply member being coupled to the mount and being capable of driving the mount to move, the device frame comprising a support frame and a connecting frame, the mount being coupled to the connecting frame, the support frame having at least one X-axis guide structure along which the connecting frame is movably mounted to the support frame, the power supply member comprising a first power supply assembly, the connecting frame being coupled to the first power supply assembly, the first power supply assembly being configured to drive the connecting frame to move along the X-axis guide structure and thereby drive the mount to move.

5. The tightening assembly device according to claim 4, wherein the connecting frame comprises a cross arm slidably mounted to the X-axis guide structure and an abutment mounted to the abutment, the cross arm having at least one Y-axis guide structure, the abutment being movably mounted to the cross arm along the Y-axis guide structure, the power supply member comprising a second power supply assembly, the abutment being connected to the second power supply assembly, the second power supply assembly being arranged to drive the abutment to move along the Y-axis guide structure and thereby the abutment.

6. The tightening assembly device according to claim 5, wherein the interface member has at least one Z-axis guide structure, the mount is movably mounted to the interface member along the Z-axis guide structure, the power supply member includes a third power supply assembly, the mount is connected to the third power supply assembly, and the third power supply assembly is configured to drive the mount to move along the Z-axis guide structure.

7. A working method based on a tightening assembly device according to any one of claims 1-6, characterized in that it comprises the steps of: