CN115476145A

CN115476145A - Position changing mechanism of four-shaft tightening machine, tightening machine and using method of tightening machine

Info

Publication number: CN115476145A
Application number: CN202211177478.2A
Authority: CN
Inventors: 房汉斌; 黄跃进; 黄永谦
Original assignee: Dalian Dexin M&E Technology Engineering Co Ltd
Current assignee: Dalian Dexin M&E Technology Engineering Co Ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2022-12-16

Abstract

The invention relates to a shifting mechanism of a four-shaft tightening machine, the tightening machine and a use method thereof, wherein the shifting mechanism comprises: fixing the disc; the swinging plate is positioned on one side of the fixed disk, the swinging plate is connected with the fixed disk in a swinging manner through a connecting seat, the rotation center of the swinging plate is coaxial with the rotation center of the fixed disk and the rotation center of the connecting seat, and the swinging plate can swing back and forth around the rotation center of the connecting seat; the first displacement assembly is arranged on the fixed disk along the radial direction of the fixed disk, and two ends of the first displacement assembly are symmetrically provided with first tightening shaft mounting holes; the second displacement assembly is mounted on the swinging plate along the length direction of the swinging plate, and two ends of the second displacement assembly are symmetrically provided with second tightening shaft mounting holes; and the two first screwing shaft mounting holes and the two second screwing shaft mounting holes are in a same circle. The angle can be changed, the diameter can be changed, the structure is simple, and the operation is convenient.

Description

Position changing mechanism of four-shaft tightening machine, tightening machine and using method of tightening machine

Technical Field

The invention relates to the technical field of tightening machines, in particular to a shifting mechanism of a four-shaft tightening machine, the tightening machine and a using method of the four-shaft tightening machine.

Background

The production line of car generally all is the production mode of mixed motorcycle type, and the vehicle of the equidimension not of different motorcycle types is assembled through a production line, can appear the reference circle different situations that the bolt belongs to when screwing up circular equipartition bolts such as wheel this moment to the also condition that the quantity that can have the bolt equipartition is also different. Conventionally, a plurality of tightening machines with different shaft numbers and different distribution sizes are adopted to tighten different vehicle types, so that the increase of the number of equipment not only occupies the operation space of a production line, but also increases the capital investment of the equipment, and the operation difficulty is increased by selecting different equipment according to different machine types.

Disclosure of Invention

In view of the deficiencies of the prior art, it is an object of the present invention to provide a shifting mechanism for a four-shaft tightening machine to solve the above-mentioned problems of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the shifting mechanism of four-axis tightening machine, its characterized in that: the method comprises the following steps:

fixing the disc;

the swinging plate is positioned on one side of the fixed disk, the swinging plate is connected with the fixed disk in a swinging manner through a connecting seat, the rotation center of the swinging plate is coaxial with the rotation center of the fixed disk and the rotation center of the connecting seat, and the swinging plate can swing back and forth around the rotation center of the connecting seat;

the first displacement assembly is arranged on the fixed disk along the radial direction of the fixed disk, and two ends of the first displacement assembly are symmetrically provided with first tightening shaft mounting holes; and

the second displacement assembly is arranged on the swinging plate along the length direction of the swinging plate, and two ends of the second displacement assembly are symmetrically provided with second tightening shaft mounting holes;

and the two first screwing shaft mounting holes and the two second screwing shaft mounting holes are in a same circle.

Furthermore, the first displacement assembly comprises a first guide rail assembly and first bearing plates movably arranged at two ends of the first guide rail assembly respectively, the first guide rail assembly comprises two first guide rails arranged in parallel, the two first guide rails are arranged on the fixed disk in the radial direction of the fixed disk and close to one side of the swinging plate, two ends of each first guide rail are provided with first sliding blocks in a sliding manner, each first bearing plate is correspondingly fixed on the two first sliding blocks at one end of the two first guide rails, and each first bearing plate is provided with a first tightening shaft mounting hole;

the second subassembly that shifts includes second guide rail set spare and mobilizable setting respectively is in the second loading board at second guide rail set spare both ends, second guide rail set spare includes two parallel arrangement's second guide rail, two the second guide rail is followed the length direction of swinging the board is installed keep away from on the swinging board fixed disk one side, every the both ends of second guide rail all slide and are provided with the second slider, every the second loading board corresponds and is fixed in two of second guide rail one end on the second slider, every all seted up on the second loading board the axle mounting hole is screwed up to the second.

Furthermore, a first guide groove is respectively formed in the fixed disc corresponding to the moving direction of each first bearing plate, a second guide groove is formed in the fixed disc corresponding to the moving direction of each second bearing plate, a third guide groove is formed in the fixed disc corresponding to the swinging direction of each second bearing plate, and the second guide grooves are communicated with the third guide grooves; and a fourth guide groove is formed in the swinging plate corresponding to the moving direction of the second bearing plate.

Furthermore, the connecting seat is cylindrical, a first central hole is formed in the rotation center of the fixed disk, a second central hole is formed in the rotation center of the swinging plate, a first connecting flange is arranged at one end of the connecting seat, the other end of the connecting seat sequentially penetrates through the first central hole and the second central hole, a bearing is installed between the second central hole and the connecting seat, and the first connecting flange is connected with the fixed disk through a first bolt.

The device further comprises a driving mechanism which is respectively in driving connection with the two first bearing plates and the two second bearing plates and drives the two first bearing plates and the two second bearing plates to synchronously move;

the drive mechanism includes: the driving mechanism comprises a driving motor, a screw rod, a sliding sleeve, a first driving plate and a second driving plate; the driving motor is positioned on one side of the swinging plate, which is far away from the fixed disk, the driving motor is erected on the fixed disk through the motor, the connecting seat is coaxially provided with an installation hole, the sliding sleeve is slidably installed in the installation hole of the connecting seat along the axial direction, the sliding sleeve is coaxially provided with a screw hole, one end of the screw rod is connected with the output end of the driving motor, the other end of the screw rod is in threaded connection with the threaded hole of the sliding sleeve, the driving motor drives the screw rod to rotate, and the screw rod drives the sliding sleeve to move in the installation hole;

one end, far away from the screw, of the sliding sleeve sequentially penetrates through the middle parts of a first transmission plate and a second transmission plate, wherein the first transmission plate is fixedly connected with the sliding sleeve, and the second transmission plate is rotatably connected with the sliding sleeve;

a second connecting flange is arranged at one end, away from the screw rod, of the sliding sleeve, a third central hole matched with the outer diameter of the sliding sleeve is formed in the middle of the first transmission plate, a fourth central hole matched with the outer diameter of the connecting flange is formed in the middle of the second transmission plate, the second connecting flange is connected with the first transmission plate through a second bolt, and the second connecting flange is in sliding fit with the fourth central hole; and the outer end face of the second connecting flange is provided with a limiting cover plate for limiting the second transmission plate.

Furthermore, the driving mechanism further comprises a first hinge element and a second hinge element, two ends of the first transmission plate are respectively in transmission connection with the two first bearing plates through the first hinge element, each first hinge element comprises a first hinge lug plate and a first hinge frame which are in hinge connection, one end, far away from the first hinge frame, of each first hinge lug plate is axially fixed on the first bearing plate and located outside the first tightening shaft mounting hole, one end, far away from the first hinge lug plate, of each first hinge frame is correspondingly hinged to the end of the first transmission plate, and one end, corresponding to the first transmission plate, of each first hinge frame is provided with an avoidance groove for avoiding the tightening shaft on the first tightening shaft mounting hole;

the both ends of second driving plate are passed through respectively second articulated elements and two the transmission of second loading board is connected, every the second articulated elements includes articulated second hinge lug board and the articulated frame of second of connecting, the articulated lug board of second is kept away from the one end of second articulated frame is fixed along the axial on the second loading board, and is located the outside of axle mounting hole is screwed up to the second, the second articulated frame is kept away from the one end correspondence of second hinge lug board articulate in the tip of second driving plate, the second articulated frame with the corresponding one end of second driving plate has been seted up respectively and has been dodged the groove, is used for dodging screw up the axle on the axle mounting hole is screwed up to the second.

Furthermore, including first station and second station, first station does first position subassembly with the second position the subassembly contained angle that shifts is 90 degrees states, the second station does first position subassembly with the second position the acute angle contained angle of subassembly is 78 degrees states.

Furthermore, a first positioning assembly and a second positioning assembly are arranged between the swinging plate and the fixed disc, the first positioning assembly is used for positioning the first station, and the second positioning assembly is used for positioning the second station; the first positioning component comprises a first bolt arranged on the fixed disc and a first bolt sleeve which is correspondingly arranged on the swinging plate and is matched with the first bolt; the second positioning assembly comprises a second bolt arranged on the fixed disc and a second bolt sleeve correspondingly arranged on the swinging plate and matched with the second bolt.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a shifting mechanism of a four-shaft tightening machine, which comprises: fixing the disc; the swinging plate is positioned on one side of the fixed disk, the swinging plate is connected with the fixed disk in a swinging manner through a connecting seat, the rotation center of the swinging plate is coaxial with the rotation center of the fixed disk and the rotation center of the connecting seat, and the swinging plate can swing back and forth around the rotation center of the connecting seat; the first displacement assembly is arranged on the fixed disc along the radial direction of the fixed disc, and two ends of the first displacement assembly are symmetrically provided with first tightening shaft mounting holes; the second deflection assembly is arranged on the swinging plate along the length direction of the swinging plate, and two ends of the second deflection assembly are symmetrically provided with second screwing shaft mounting holes; and the first tightening shaft mounting holes and the second tightening shaft mounting holes are in a same circle. The angle can be changed, the diameter can be changed, the structure is simple, and the operation is convenient.

Another object of the present invention is to provide a tightening machine including a power tightening shaft and the indexing mechanism of the four-shaft tightening machine according to any one of the above embodiments, wherein the power tightening shaft is mounted in each of the first and second tightening shaft mounting holes.

Compared with the prior art, the shifting mechanism of the tightening machine and the four-shaft tightening machine has the same advantages, and in addition, the tightening machine can realize automatic and quick tightening operation, and is high in efficiency and low in cost.

The invention also provides a using method of the tightening machine, which comprises the following steps:

when 8 circumferentially and uniformly distributed bolts are screwed, firstly adjusting a screwing machine to a first station, and screwing 8 circumferentially and uniformly distributed bolts twice; correspondingly screwing 4 bolts firstly for the first time, and correspondingly screwing the other 4 bolts for the second time after rotating the fixed plate for 45 degrees;

when 10 bolts uniformly distributed on the circumference are screwed, firstly adjusting the screwing machine to the position of a second station, and screwing the 10 bolts uniformly distributed on the circumference for three times; correspondingly tightening 4 bolts for the first time, then rotating the fixed plate for 36 degrees clockwise, performing second tightening, correspondingly tightening 4 bolts for the second time, then rotating the fixed plate for 72 degrees anticlockwise, performing third tightening, and tightening the rest 2 bolts by two electric tightening shafts arranged on the two first tightening shaft mounting holes during the third tightening, wherein the electric tightening shaft shields on the second tightening shaft mounting holes do not work during the third tightening.

The using method of the tightening machine is the same as the advantages of the tightening machine in the prior art, in addition, the using method of the tightening machine in the embodiment tightens 8 bolts which are uniformly distributed on the circumference through the four-shaft electric tightening shaft 8 through two actions, tightens 10 bolts which are uniformly distributed on the circumference through three actions, and the tightening machine is multipurpose, convenient and fast.

Drawings

FIG. 1 is a schematic front view of a first station according to an embodiment of the present invention;

FIG. 2 is a rear view of a first station according to an embodiment of the present invention;

FIG. 3 is a schematic side view of a first station according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a first station according to an embodiment of the present invention;

FIG. 5 is a schematic perspective view of a first station according to an embodiment of the present invention;

fig. 6 is a schematic front view of a second station according to an embodiment of the present invention.

In the figure: 1. a fixed disc, 1.1, a first guide groove, 1.2, a second guide groove, 1.3, a third guide groove, 2, a swing plate, 2.1, a fourth guide groove, 3, a connecting seat, 3.1, a first connecting flange, 4, a first guide rail component, 4.1, a first guide rail, 4.2, a first slide block, 5, a first bearing plate, 5.1, a first screwing shaft mounting hole, 6, a second guide rail component, 6.1, a second guide rail, 6.2, a second slide block, 7, a second bearing plate, 7.1, a second screwing shaft mounting hole, 8, an electric screwing shaft, 8.1, a screwing shaft, 8.2, a servo motor, 9, a driving mechanism, 9.1, a driving motor, 9.2, a screw rod, 9.3, a sliding sleeve, 9.3.1, a second connecting flange, 9.4, a first transmission plate, 9.5, a second transmission plate, 9.6, a first hinging lug plate, 9.7, a first hinging frame, 9.8, a second hinging lug plate, 9.9, a second hinging frame, 10, a first bolt, 11, a first bolt seat, 12, a second bolt, 13, a second bolt seat, 14, a bearing, 15, a motor frame, 16, a first bolt, 17, a second bolt, 18 and a limiting cover plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1

As shown in fig. 1 to 6, the shifting mechanism of the four-shaft tightening machine comprises: the device comprises a fixed disc 1, a swinging plate 2, a first displacement component and a second displacement component. The fixed disc 1 is disc-shaped and plays a role in bearing and supporting.

The swinging plate 2 is in a strip shape, is overlapped at one side of the fixed disk 1 at intervals and is connected with the fixed disk 1 in a swinging way through the connecting seat 3, the rotation center of the swinging plate 2 is coaxial with the rotation center of the fixed disk 1 and the rotation center of the connecting seat 3, and the swinging plate 2 can swing around the rotation center of the connecting seat 3 in a reciprocating way; specifically, the connecting seat 3 is cylindrical, a first center hole is formed in the rotation center of the fixed disk 1, a second center hole is formed in the rotation center of the swing plate 2, a first connecting flange 3.1 is arranged at one end of the connecting seat 3, the other end of the connecting seat 3 sequentially penetrates through the first center hole and the second center hole, a bearing 14 is installed between the second center hole and the connecting seat 3, and the first connecting flange 3.1 is connected with the fixed disk 1 through a first bolt 16. When the bearing is installed, the outer ring of the bearing 14 is installed in the second central hole, the inner ring of the bearing 14 is installed on the connecting seat 3, and the bearing 14 gland is installed at one end of the connecting seat 3 close to the bearing 14. Note that the bearing 14 is provided to allow the swinging plate 2 to swing back and forth around the center of rotation of the link base 3.

The first displacement assembly of the embodiment is arranged on the fixed disc 1 along the radial direction of the fixed disc 1 and is positioned at one side close to the swinging plate 2, and two ends of the first displacement assembly are symmetrically provided with first tightening shaft mounting holes 5.1; specifically, the first subassembly that shifts includes first guide rail set spare 4 and the first loading board 5 of mobilizable setting at first guide rail set spare both ends respectively, first guide rail set spare 4 includes two parallel arrangement's first guide rail 4.1, two first guide rails 4.1 are installed on fixed disk 1 along fixed disk 1's radial and are close to swing board 2 one side, every first guide rail 4.1's both ends all slide and are provided with first slider 4.2, every first loading board 5 corresponds and is fixed in on two first sliders 4.2 of two first guide rails 4.1 one end, all seted up first screwing up axle mounting hole 5.1 on every first loading board 5.

The second deflection component of the present embodiment is installed on the swinging plate 2 along the length direction of the swinging plate 2, and the two ends of the second deflection component are symmetrically provided with second tightening shaft installation holes 7.1; specifically, the second subassembly that shifts includes second guide rail assembly 6 and the second loading board 7 of mobilizable setting at second guide rail assembly 6 both ends respectively, second guide rail assembly 6 includes two parallel arrangement's second guide rail 6.1, two second guide rails 6.1 are installed and are kept away from fixed disk 1 one side on swinging board 2 along the length direction of swinging board 2, the both ends of every second guide rail 6.1 all slide and are provided with second slider 6.2, every second loading board 7 corresponds and is fixed in two second sliders 6.2 of two second guide rails 6.1 one end, all seted up the second on every second loading board 7 and screwed up axle mounting hole 7.1.

The two first tightening shaft mounting holes 5.1 and the two second tightening shaft mounting holes 7.1 in this embodiment are co-circular. Note that the first tightening shaft mounting hole 5.1 and the second tightening shaft mounting hole 7.1 in the present embodiment are used for mounting the power tightening shaft 8. When the device is used, the two screwing shaft mounting holes in the swinging plate 2 and the two screwing shaft mounting holes in the fixed plate 1 can be shifted in the angle direction on the same reference circle through the swinging of the swinging plate 2 relative to the fixed plate 1, the radial shifting of each electric screwing shaft 8 mounted on the screwing shaft mounting holes is realized through the two first bearing plates 5 on the first guide rail assembly and the two second bearing plates 7 on the second guide rail assembly, the device is flexible in shifting, simple in structure and convenient to operate, and the screwing operation of bolts with different quantities can be met. The specific procedure is as described in example 3 below.

In order to facilitate the realization of the reference circle diameter change corresponding to the four electric tightening shafts 8 installed in the tightening shaft installation holes and the realization of the change of the included angle between the first displacement assembly and the second displacement assembly, a first guide groove 1.1 is respectively arranged on the fixed disk 1 corresponding to the moving direction of each first bearing plate 5, a second guide groove 1.2 is arranged on the fixed disk 1 corresponding to the moving direction of each second bearing plate 7, a third guide groove 1.3 is arranged on the fixed disk 1 corresponding to the swinging direction of each second bearing plate 7, wherein the second guide groove 1.2 is communicated with the third guide groove 1.3; the swing plate 2 is provided with a fourth guide groove 2.1 corresponding to the moving direction of the second bearing plate 7. When the electric tightening device is used, the electric tightening shafts installed in the mounting holes of the tightening shafts correspondingly penetrate through the guide grooves.

The embodiment further comprises a driving mechanism 9, which is respectively in driving connection with the two first bearing plates 5 and the two second bearing plates 7 to drive the two first bearing plates 5 and the two second bearing plates 7 to move synchronously. Specifically, the drive mechanism 9 includes: the driving mechanism comprises a driving motor 9.1, a screw 9.2, a sliding sleeve 9.3, a first transmission plate 9.4, a second transmission plate 9.5, a first hinge and a second hinge. The driving motor 9.1 is positioned at one side of the swinging plate 2 far away from the fixed disk 1, the driving motor 9.1 is erected on the fixed disk 1 through a motor frame 15, the connecting seat 3 is coaxially provided with a mounting hole, the sliding sleeve 9.3 is slidably mounted in the mounting hole of the connecting seat 3 along the axial direction, the sliding sleeve 9.3 is coaxially provided with a screw hole, one end of the screw rod 9.2 is connected with the output end of the driving motor 9.1, and the other end of the screw rod 9.2 is in threaded connection with the screw hole of the sliding sleeve 9.3; the first transmission plate 9.4 and the second transmission plate 9.5 are overlapped in a crossing manner on one side of the fixed plate 1 far from the swing plate 2, one end of the sliding sleeve 9.3 far from the screw rod 9.2 sequentially penetrates through the middle parts of the first transmission plate 9.4 and the second transmission plate 9.5, wherein the first transmission plate 9.4 is fixedly connected with the sliding sleeve 9.3, the second transmission plate 9.5 is rotatably connected with the sliding sleeve 9.3, specifically, one end of the sliding sleeve 9.3 far from the screw rod 9.2 is provided with a second connecting flange 9.3.1, the middle part of the first transmission plate 9.4 is provided with a third central hole matched with the outer diameter of the sliding sleeve 9.3, the middle part of the second transmission plate 9.5 is provided with a fourth central hole matched with the outer diameter of the second connecting flange 9.3.1, the second connecting flange 9.3.1 is connected with the first transmission plate 9.4 through a second bolt 17, the second connecting flange 9.3.1 is in sliding fit with the fourth central hole, the outer end face of the second connecting flange is provided with a limiting cover plate 18, and the second limiting cover plate is mounted on the outer end face of the second limiting flange 9.5 through a limiting screw 9.9.3. The output shaft of the driving motor 9.1 of the embodiment is coaxially arranged with the screw rod 9.2 and the sliding sleeve 9.3.

Two ends of the first transmission plate 9.4 of this embodiment are respectively connected with the two first bearing plates 5 through first hinge parts, specifically, each first hinge part includes a first hinge lug plate 9.6 and a first hinge frame 9.7 which are connected in a hinged manner, one end of the first hinge lug plate 9.6, which is far away from the first hinge frame 9.7, is fixed on the first bearing plate 5 along the axial direction and is located outside the first tightening shaft mounting hole 5.1, one end of the first hinge frame 9.7, which is far away from the first hinge lug plate 9.6, is correspondingly hinged to the end of the first transmission plate 9.4, and one end of the first hinge frame 9.7, which corresponds to the first transmission plate 9.4, is respectively provided with an avoiding groove for avoiding a tightening shaft on the first tightening shaft mounting hole 5.1. The first hinge frame 9.7 of this embodiment is a Y-shaped frame, the open end of which is correspondingly hinged to the notch-avoiding end of the first driving plate 9.4.

The two ends of the second transmission plate 9.5 of this embodiment are respectively connected with the two second bearing plates 7 through the second hinge parts, specifically, each second hinge part includes a second hinge lug plate 9.8 and a second hinge frame 9.9 which are connected in a hinged manner, one end of the second hinge lug plate 9.8, which is far away from the second hinge frame 9.9, is fixed on the second bearing plate 7 along the axial direction and is located outside the second tightening shaft mounting hole 7.1, one end of the second hinge frame 9.9, which is far away from the second hinge lug plate 9.8, is correspondingly hinged to the end of the second transmission plate 9.5, and one end of the second hinge frame 9.9, which corresponds to the second transmission plate 9.5, is respectively provided with an avoiding groove for avoiding the tightening shaft on the second tightening shaft mounting hole 7.1. The second hinged frame 9.9 of the embodiment is a Y-shaped frame, and the open end of the Y-shaped frame is correspondingly hinged to the avoiding notch end of the second transmission plate 9.5.

During the use, driving motor 9.1 drives the screw rod 9.2 rotatory, and screw rod 9.2 drive sliding sleeve 9.3 removes in the mounting hole, and sliding sleeve 9.3 drives first transmission board 9.4 and second transmission board 9.5 and reciprocates along its axial together, and the both ends of first transmission board 9.4 drive two first loading boards 5 through first articulated frame 9.7 and first articulated otic placode 9.6 respectively and are close to each other or keep away from each other on first guide rail 4.1, and simultaneously, the both ends of second transmission board 9.5 drive two second loading boards 7 through second articulated frame 9.9 and second articulated otic placode 9.8 respectively and are close to each other or keep away from each other on second guide rail 6.1.

The shifting mechanism of the four-shaft tightening machine in the embodiment comprises a first station and a second station, wherein the first station is in a state that an included angle between a first shifting assembly and a second positioning assembly is 90 degrees, and the second station is in a state that an acute included angle between the first shifting assembly and the second shifting assembly is 78 degrees. It should be noted that the second deflection component can be adjusted to adapt to a plurality of bolts arranged in different ways relative to the first deflection component.

In order to ensure the stability of the relative position of the first displacement assembly and the second displacement assembly, a first positioning assembly and a second positioning assembly are arranged between the swinging plate 2 and the fixed plate 1, the first positioning assembly is used for positioning a first station, the second positioning assembly is used for positioning a second station, specifically, the first positioning assembly comprises a first bolt 10 arranged on the fixed plate 1 and a first bolt sleeve correspondingly arranged on the swinging plate 2 and matched with the first bolt 10, specifically, the first bolt 10 is arranged on one side, far away from the swinging plate 2, of the fixed plate 1 through a first bolt seat 11, a first compression spring is arranged between the shaft diameter of the first bolt 10 and a mounting hole on the first bolt seat 11, the first compression spring is used for ensuring that the first bolt 10 is in a state of extending out the first bolt seat 11, and the first bolt sleeve is embedded in the mounting hole on the swinging plate 2.

The second locating component comprises a second bolt 12 arranged on the fixed disc 1 and a second bolt sleeve correspondingly arranged on the swing plate 2 and matched with the second bolt 12, specifically, the second bolt 12 is installed on one side, far away from the swing plate 2, of the fixed disc 1 through a second bolt seat 13, a second compression spring is arranged between the shaft diameter of the second bolt 12 and a mounting hole in the second bolt seat 13 and used for ensuring that the second bolt 12 is in a state of extending out of the second bolt seat 13, and the second bolt 12 is sleeved and embedded in the mounting hole in the swing plate 2.

Compared with the prior art, the embodiment has the beneficial effects that:

in the embodiment, the driving mechanism 9 drives the two first bearing plates 5 on the first displacement assembly and the two second bearing plates 7 on the second displacement assembly to synchronously move, so that the radial displacement of the electric tightening shafts 8 installed on the mounting holes of the tightening shafts is realized, the second displacement assembly on the swinging plate 2 swings relative to the first displacement assembly on the fixed plate 1, so that the displacement of the electric tightening shafts 8 in the angle direction is realized, the displacement is flexible, the structure is simple, the operation is convenient, the tightening operation of bolts which are uniformly distributed on the circumference and are 4, 8 or 10 and the like can be met, and the device is multipurpose, convenient and quick.

Example 2

A tightening machine comprising the indexing mechanism of the four-shaft tightening machine of embodiment 1, further comprising a power tightening shaft 8, the power tightening shaft 8 being mounted in each of the first and second tightening shaft mounting holes 5.1 and 7.1. The electric tightening shaft 8 comprises a tightening shaft 8.1 and a servo driving motor 8.2 for driving the tightening shaft to rotate; the tightening shafts 8.1 are arranged in the tightening shaft mounting holes, and the servo motors 8.2 are fixed on the corresponding bearing plates. It should be noted that the electric tightening shaft 8 in this embodiment is a conventional one (model number of the electric tightening shaft 8: DEN-DBS 800P; manufacturer: dagedenchen New technology engineering Co., ltd.).

It should be noted that the tightening machine of the present embodiment has the advantageous effects of embodiment 1, and the automatic quick tightening operation can be realized by providing the electric tightening shaft, which is efficient and low in cost.

Example 3

A method of using the tightening machine of embodiment 2, comprising the steps of:

when 8 bolts uniformly distributed on the circumference are screwed, the second bolt 12 is firstly pulled out, the first bolt 10 is inserted into the first bolt sleeve, so that the screwing machine is adjusted to a first station, and then the electric screwing shaft 8 is controlled to screw the bolts uniformly distributed on the circumference twice; specifically, the electric tightening shaft 8 is controlled to correspondingly tighten 4 bolts for the first time, and after the fixed disk is rotated by 145 degrees, the other 4 bolts are correspondingly tightened for the second time.

This example also provides another method of using the tightening machine of example 2,

the method comprises the following steps:

when 10 bolts uniformly distributed on the circumference are screwed, the first bolt 10 is firstly pulled out, then the second bolt 12 is inserted into the second bolt 12 sleeve, so that the screwing machine is adjusted to the position of the second station, and then the electric screwing shaft 8 is controlled to screw the bolts uniformly distributed on the circumference for three times; specifically, the electric tightening shafts 8 are controlled to correspondingly tighten 4 bolts for the first time, then the fixed plate is rotated clockwise for 36 degrees, the second tightening is performed, the 4 bolts are correspondingly tightened for the second time, then the fixed plate is rotated anticlockwise for 72 degrees, the third tightening is performed, and the remaining 2 bolts are tightened through the two electric tightening shafts 8 arranged on the two first tightening shaft mounting holes 5.1 during the third tightening, wherein the electric tightening shafts 8 on the second tightening shaft mounting holes 7.1 are not shielded and are not operated during the third tightening.

Compared with the prior art, the embodiment has the advantages that:

it should be noted that the present embodiment has the advantageous effects of embodiment 2. In addition, the using method of the tightening machine of the embodiment tightens 8 circumferentially and uniformly distributed bolts through the four-shaft electric tightening shaft 8 through twice actions, tightens 10 circumferentially and uniformly distributed bolts through three times actions, and is multipurpose, convenient and rapid.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

In the description of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The shifting mechanism of the four-shaft tightening machine is characterized in that: the method comprises the following steps:

fixing the disc;

the first displacement assembly is arranged on the fixed disc along the radial direction of the fixed disc, and two ends of the first displacement assembly are symmetrically provided with first tightening shaft mounting holes; and

2. The indexing mechanism of a four-shaft tightening machine according to claim 1, wherein: the first deflection assembly comprises a first guide rail assembly and first bearing plates which are movably arranged at two ends of the first guide rail assembly respectively, the first guide rail assembly comprises two first guide rails which are arranged in parallel, the two first guide rails are arranged on the fixed disc along the radial direction of the fixed disc and close to one side of the swinging plate, two ends of each first guide rail are provided with first sliding blocks in a sliding manner, each first bearing plate is correspondingly fixed on the two first sliding blocks at one end of the two first guide rails, and each first bearing plate is provided with a first screwing shaft mounting hole;

the second displacement assembly comprises a second guide rail assembly and second bearing plates which are movably arranged at two ends of the second guide rail assembly respectively, the second guide rail assembly comprises two second guide rails which are arranged in parallel, the second guide rails are arranged along the length direction of the swinging plate and are far away from one side of the fixed plate, and each of the two ends of the second guide rails is provided with a second sliding block in a sliding mode, and each of the second bearing plates is correspondingly fixed at two of one end of the second guide rail and is arranged on the second sliding block and is provided with a second screwing shaft mounting hole.

3. The shifting mechanism of a four-shaft tightening machine according to claim 2, characterized in that: the fixed disc is provided with a first guide groove corresponding to the moving direction of each first bearing plate, a second guide groove corresponding to the moving direction of each second bearing plate is arranged on the fixed disc, a third guide groove corresponding to the swinging direction of each second bearing plate is arranged on the fixed disc, and the second guide grooves are communicated with the third guide grooves; and a fourth guide groove is formed in the swinging plate corresponding to the moving direction of the second bearing plate.

4. The indexing mechanism of a four-shaft tightening machine according to claim 1, wherein: the connecting seat is cylindrical, a first central hole is formed in the rotation center of the fixed disk, a second central hole is formed in the rotation center of the swinging plate, a first connecting flange is arranged at one end of the connecting seat, the other end of the connecting seat sequentially penetrates through the first central hole and the second central hole, a bearing is installed between the second central hole and the connecting seat, and the first connecting flange is connected with the fixed disk through a first bolt.

5. The shifting mechanism of a four-shaft tightening machine according to claim 1, wherein: the driving mechanism is respectively in driving connection with the two first bearing plates and the two second bearing plates and drives the two first bearing plates and the two second bearing plates to synchronously move;

one end, far away from the screw rod, of the sliding sleeve sequentially penetrates through the middle parts of a first transmission plate and a second transmission plate, wherein the first transmission plate is fixedly connected with the sliding sleeve, and the second transmission plate is rotatably connected with the sliding sleeve;

a second connecting flange is arranged at one end, far away from the screw rod, of the sliding sleeve, a third central hole matched with the outer diameter of the sliding sleeve is formed in the middle of the first transmission plate, a fourth central hole matched with the outer diameter of the connecting flange is formed in the middle of the second transmission plate, the second connecting flange is connected with the first transmission plate through a second bolt, and the second connecting flange is in sliding fit with the fourth central hole; and the outer end face of the second connecting flange is provided with a limiting cover plate for limiting the second transmission plate.

6. The indexing mechanism of a four-shaft tightening machine according to claim 5, wherein: the driving mechanism further comprises first hinge parts and second hinge parts, two ends of the first transmission plate are in transmission connection with the two first bearing plates through the first hinge parts respectively, each first hinge part comprises a first hinge lug plate and a first hinge frame which are in hinge connection, one end, far away from the first hinge frame, of each first hinge lug plate is axially fixed on the first bearing plate and located on the outer side of the first tightening shaft mounting hole, one end, far away from the first hinge lug plate, of each first hinge frame is correspondingly hinged to the end of the first transmission plate, and one ends, corresponding to the first transmission plates, of the first hinge frames are provided with avoidance grooves respectively and used for avoiding tightening shafts on the first tightening shaft mounting holes;

7. The indexing mechanism of a four-shaft tightening machine according to any one of claims 1 to 6, wherein: including first station and second station, first station does first shift the subassembly with the second shifts the state that the subassembly contained angle is 90 degrees, the second station does first shift the subassembly with the second shifts the acute angle contained angle of subassembly and is 78 degrees states.

8. The indexing mechanism of a four-shaft tightening machine according to claim 7, wherein: a first positioning assembly and a second positioning assembly are arranged between the swinging plate and the fixed disc, the first positioning assembly is used for positioning the first station, and the second positioning assembly is used for positioning the second station; the first positioning component comprises a first bolt arranged on the fixed disc and a first bolt sleeve correspondingly arranged on the swinging plate and matched with the first bolt; the second positioning assembly comprises a second bolt arranged on the fixed disc and a second bolt sleeve correspondingly arranged on the swinging plate and matched with the second bolt.

9. Tightening machine, its characterized in that: an indexing mechanism comprising a power tightening shaft and the four-shaft tightening machine according to any one of claims 1 to 8, wherein the power tightening shaft is mounted in each of the first tightening shaft mounting hole and the second tightening shaft mounting hole.

10. A method of using the tightening machine according to claim 9, characterized in that: the method comprises the following steps:

when 8 bolts uniformly distributed on the circumference are screwed, firstly adjusting a screwing machine to a first station, and screwing 8 bolts uniformly distributed on the circumference twice; correspondingly screwing 4 bolts for the first time, and correspondingly screwing the other 4 bolts for the second time after rotating the fixed plate for 45 degrees;

when 10 bolts uniformly distributed on the circumference are screwed, firstly adjusting the screwing machine to the position of a second station, and screwing the 10 bolts uniformly distributed on the circumference for three times; correspondingly screwing 4 bolts for the first time, then rotating the fixed disc for 36 degrees clockwise, screwing for the second time, correspondingly screwing for the second time for 4 bolts, then rotating the fixed disc for 72 degrees anticlockwise, screwing for the third time, and screwing for the third time the rest 2 bolts through two electric screwing shafts arranged on the two first screwing shaft mounting holes, wherein in the third time of screwing, the electric screwing shaft shields on the second screwing shaft mounting holes do not work.