CN220196842U

CN220196842U - Automatic screwing device for inner shell

Info

Publication number: CN220196842U
Application number: CN202320984022.0U
Authority: CN
Inventors: 王麒尧; 邓金萍; 阳运珍; 赵斐; 杨军; 张浬萍; 刘荣康; 侯鑫; 袁程
Original assignee: Southwest University of Science and Technology
Current assignee: Southwest University of Science and Technology
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2023-12-19
Anticipated expiration: 2033-04-27

Abstract

The utility model provides an automatic screwing device for an inner shell, which is used for screwing bolts of an inner shell of an aeroengine combustion chamber and comprises a base, a workpiece turntable, a movable slipway, a slipway support and a screwing rotary head, wherein the movable slipway is fixed on the base through bolts, the workpiece turntable is arranged on the base, the movable slipway is connected with the slipway support through bolts, a telescopic motor is vertically arranged at the top end of the slipway support, the telescopic motor is connected with a telescopic guide rod through a sleeve, the screwing rotary head is connected with the telescopic guide rod through bolts, the screwing rotary head is designed as a replaceable sleeve, screwing operation with higher precision can be performed on bolts of different types by adapting to different sleeves, the operation efficiency is improved, the production is convenient, the universality is strong, the operation is flexible, the fixed-point operation can be performed, and the automatic screwing of a specified shell can be completed deep into a narrow space of the inner shell of the aeroengine.

Description

Automatic screwing device for inner shell

Technical Field

The utility model relates to the technical field of automatic tightening devices, in particular to an automatic tightening device for an inner shell.

Background

The development of the existing tightening equipment tends to be automatic, intelligent and flexible, and the highly-automatic tightening equipment can enable production to be more efficient and labor cost to be lower. For the tightening of built-in bolts with narrow operable space and darker light, the tightening requirement of the built-in bolts is met, and large automatic tightening equipment and manual tightening are difficult to lower; for example, an aero-engine housing, in which bolts are placed inside the housing and the interior space is narrow, large torque and high angular accuracy are required to be achieved, large tightening equipment and manpower are not available at all, the aero-engine housing is used as a core component of an aircraft driving unit, periodic maintenance and replacement are required, and an upper housing and a lower housing of the engine are assembled by connecting built-in bolts. Therefore, the universal automatic tightening machine is designed aiming at the narrow space of the aero-engine shell, and has great significance for improving the production efficiency.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, provides an automatic screwing device for an inner shell, solves the problem of screwing a shell bolt in a combustion chamber of an aero-engine, improves the operation efficiency and is convenient for production; the universality is strong, the operation is flexible, and the fixed-point operation can be realized; the screw-down operation of higher precision can be carried out to different models of bolts to different sleeves of adaptation, can go deep into the narrow space of aeroengine inner shell, accomplishes the automatic screw-down of appointed casing.

The utility model provides an automatic screwing device of inner shell for the operation of screwing bolt of aeroengine combustion chamber inner shell, the device include a pair of removal slip table, slip table support and screw up the turning head, remove the slip table and pass through the bolt fastening on the base, install the work piece carousel on the base, remove the slip table with the slip table support passes through bolted connection, the flexible motor is installed perpendicularly on slip table support top, flexible motor passes through telescopic connection with flexible guide arm, screw up the turning head with flexible guide arm passes through bolted connection.

Further, the movable sliding table comprises sliding guide rods, a movable screw rod, a base, sliding tables, sliding blocks and a support, wherein the pair of movable sliding tables are symmetrically distributed with the base, the two sliding guide rods are connected with the support through bolts, the four sliding blocks are distributed on the two sliding guide rods, the sliding blocks are connected with the sliding tables through bolts, the screw rods are connected with the sliding tables through bolts through screw rod sliding blocks fixed on the screw rods, and the screw rods can control the sliding tables to move.

Further, through holes are distributed in the base, the base is connected with the base through bolts, the support is connected with the base through bolts, and threaded holes are distributed in the sliding table and used for installing the sliding table support.

Further, the sliding guide rod is a polished rod, a threaded hole is formed in the upper end of the support and used for fastening the sliding guide rod, a through hole is formed in the slider, the slider is connected with the guide rod through the through hole, a threaded hole is formed in the upper end of the slider, and a boss is formed in the threaded hole.

Further, the slip table support includes four main tributary vaulting poles, two vice bracing pieces, two pairs of snap rings, a pair of truss, six pairs of fastening nuts, first diaphragm and second diaphragm, the main tributary vaulting pole with vice bracing piece with the slip table is through bolted connection respectively, first diaphragm and second diaphragm with the main tributary vaulting pole with vice bracing piece passes through bolted connection, the snap ring with bolted connection is passed through to the truss.

Further, the upper end and the lower end of the main supporting rod and the lower end of the auxiliary supporting rod are all processed with threads, the fastening nuts are installed at the upper end and the lower end of the main supporting rod and the lower end of the auxiliary supporting rod for reinforcement, grooves are processed in the middle of the main supporting rod, the clamping ring is fixed through the grooves, fastening threaded holes and connecting threaded holes are processed in the clamping ring, the clamping ring is connected with the main supporting rod through the fastening threaded holes, and the truss is connected with the clamping ring through bolts for reinforcing the main supporting rod.

Further, threaded holes are formed in the two ends of the first transverse plate, a semi-arc-shaped anti-withdrawal groove is formed in the lower end of the middle of the first transverse plate, threaded holes are formed in the two ends of the second transverse plate, a semicircular notch is formed in the middle of the second transverse plate so as to facilitate installation and replacement of the tightening swivel, a through hole is formed in the middle of the first transverse plate, and a counter bore is formed in the middle of the second transverse plate.

Further, screw up the swivel and include telescopic motor, flexible guide arm, sleeve, guide arm sleeve, anti-skidding section of thick bamboo, holding bolt, floor, execution motor, hexagon socket head cap drill bit, flexible motor with the through-hole of processing on the first diaphragm passes through bolted connection, the sleeve with the counter bore of processing on the second diaphragm passes through bolted connection, flexible guide arm upper end with the guide arm sleeve passes through bolted connection, flexible guide arm lower extreme with the anti-skidding section of thick bamboo passes through holding bolt connects, holding bolt with floor fixed connection, the floor with execution motor fixed connection, execution motor with hexagon socket head cap drill bit passes through execution motor shaft connection.

Further, characterized in that, the telescopic motor adopts servo telescopic motor, telescopic motor anterior segment stretches out there is the telescopic shaft, sleeve processing has smooth through-hole, telescopic motor telescopic shaft passes smooth through-hole.

Further, the upper end and the lower end of the guide rod sleeve are respectively provided with deep holes with different diameters, the lower end of the guide rod sleeve is also provided with an anti-slip groove, the lower end of the telescopic shaft of the telescopic motor is connected with the upper end of the guide rod sleeve, the upper end of the telescopic guide rod is connected with the lower end of the guide rod sleeve, and the anti-slip groove is matched with the anti-slip groove of the guide rod sleeve.

Further, the execution motor is a servo motor, the execution motor further comprises a planetary reduction gear matched with the execution motor, the inner hexagon drill bit is processed with an inner hexagon deep hole for screwing the hexagon bolt, the upper edge of the inner hexagon deep hole is further processed with a chamfer for preventing stress concentration, and the lower end of the inner hexagon drill bit is processed with a threaded hole for fastening the inner hexagon drill bit.

Further, a workpiece turntable is mounted on the base, a motor is connected to the lower end of the workpiece turntable and used for controlling the workpiece turntable to rotate, through holes are distributed in the workpiece turntable for mounting and fixing workpieces, and the workpieces are placed at the upper end of the workpiece turntable.

The beneficial effects of the utility model are as follows: this automatic device of screwing up of inner shell sets up a pair of removal slip table, slip table support and screws up the turning round, removes the slip table and passes through the bolt fastening on the base, installs the work piece carousel on the base, removes the slip table and passes through bolted connection with the slip table support, and flexible motor is installed perpendicularly on slip table support top, and flexible motor passes through telescopic link with flexible guide arm, screws up turning round and flexible guide arm and passes through bolted connection. The tightening swivel goes deep into the workpiece, the telescopic motor above the tightening swivel controls the telescopic rod to stretch to cause the tightening swivel to move up and down, the moving sliding table moves to cause the horizontal movement of the whole device, the workpiece turntable rotates and the executing motor is matched to operate, the problem of tightening the shell bolts in the combustion chamber of the engine is solved by continuously tightening the specified inner shell workpiece, the operation efficiency is improved, and the fixed-point operation can be avoided.

Drawings

Fig. 1 is a schematic view showing an operation state of an automatic tightening device for an inner housing according to the present utility model.

Fig. 2 is a schematic structural view of an automatic tightening device for an inner housing according to the present utility model.

Fig. 3 is a schematic view of a tightening head structure of an automatic tightening device for an inner housing of the present utility model.

In the figure: 1. a base; 2. a workpiece turntable; 3. a telescopic motor; 4. a sliding guide rod; 5. moving the screw rod; 6. a base; 7. a sliding table; 8. a slide block; 9. a support; 10. a main support rod; 11. an auxiliary supporting rod; 12. a clasp; 13. truss; 14. a fastening nut; 15. a first cross plate; 16. a second cross plate; 17. a sleeve; 18. a telescopic guide rod; 19. a guide rod sleeve; 20. an anti-slip cylinder; 21. a fastening bolt; 22. rib plates; 23. executing a motor; 24. an inner hexagon drill bit; 25. a workpiece.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. It should be understood that the drawings are for illustrative purposes only and are not to be construed as limiting the present patent, and that certain elements in the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions.

As shown in fig. 2, an automatic screwing device for an inner shell comprises a pair of movable slipways, a slipway support and a screwing rotary head, wherein the movable slipways are fixed on a base 1 through bolts, a workpiece turntable 2 is installed on the base 1, the movable slipways are connected with the slipway support through bolts, a telescopic motor 3 is vertically installed at the top end of the slipway support, the telescopic motor 3 is connected with a telescopic guide rod 18 through a sleeve 17, and the screwing rotary head is connected with the telescopic guide rod 18 through bolts. The movable sliding table comprises a sliding guide rod 4, a movable screw rod 5, a base 6, a sliding table 7, a sliding block 8 and a support 9; the sliding table support comprises four main supporting rods 10, two auxiliary supporting rods 11, two pairs of clamping rings 12, a pair of trusses 13, six pairs of fastening nuts 14, a first transverse plate 15 and a second transverse plate 16; the tightening swivel comprises a telescopic motor 3, a telescopic guide rod 18, a sleeve 17, a guide rod sleeve 19, an anti-slip cylinder 20, a tightening bolt 21, a rib plate 22, an execution motor 23 and an inner hexagon drill bit 24.

As shown in fig. 1, when the tightening device is used, a power supply burning program is required to be switched on, a workpiece 25 is fixed on a workpiece turntable 2, a pre-programmed program is started, and the device system starts to automatically work.

When the tightening device works, the tightening swivel penetrates into the workpiece 25, the inner hexagonal drill 24 is first positioned, the telescopic motor 3 above the tightening swivel is controlled to control the telescopic movement of the telescopic guide rod 18 to cause the tightening swivel to move up and down, the moving sliding table moves to cause the horizontal movement of the whole device, the workpiece turntable 2 is matched to rotate, the tightening swivel is aligned with the hexagonal nut to be screwed, and the workpiece positioning is completed.

The telescopic motor 3 works to enable the tightening rotating head to move upwards until the inner hexagon bit 24 tightening head is attached to the hexagon nut, the execution motor 23 starts to work, the inner hexagon bit 24 tightening head is controlled to rotate for a specified number of turns or to reach a preset bolt pretightening force, the telescopic motor 3 works to enable the tightening rotating head to move downwards until the inner hexagon bit 24 tightening head is separated from the hexagon nut, and the workpiece turntable 2 works to rotate for a specified angle to reach the next bolt position, so that the single bolt tightening operation is completed.

Further, the system repeats the above operation until the tightening operation of all bolts is completed, the tightening swivel is reset, the workpiece 25 is removed, and this is completed.

In this embodiment, the servo motor is all adopted to the motor that this automatic device of screwing up of inner shell body used, and torsion is adjustable accurate convenient to adapt to different tightening requirements, reach and screw up the mesh that the moment of torsion can be monitored, screw up the angle is controllable, screw up data traceability, guarantee locking quality.

In this embodiment, the tightening head of the automatic tightening device for an inner casing is not limited to the inner hexagon drill bit 24, the tightening head of the automatic tightening device is designed as a replaceable sleeve, the technical purpose is to provide a replaceable sleeve head to adapt to bolts of different types, the sleeve head can be conveniently and rapidly replaced by a hexagonal, quincuncial, inner hexagonal or inner hexagonal sleeve head, and the sleeve head is firmly assembled and has high bearing force, and the sleeve head comprises a transfer shaft and a joint.

This is described in the following: the use of "first," "second," etc. (e.g., first cross-plate, second cross-plate, etc.) herein is merely for clarity of description to distinguish corresponding components and is not intended to limit any order or emphasize importance, etc. It should be apparent to those skilled in the art that the present utility model is not described in detail herein and is well known to those skilled in the art.

The above embodiments of the present utility model are only examples, and are not intended to limit the present utility model, and the scope of the present utility model is defined by the claims. Various modifications, equivalent arrangements, etc., which are within the spirit and principles of the present utility model, should be considered to be within the scope of the present utility model.

Claims

1. An automatic screwing device of inner shell for the operation of screwing bolts of inner shell of aeroengine combustion chamber, its characterized in that: the device comprises a pair of movable slipways, a slipway support and a tightening swivel, wherein the movable slipways are fixed on a base (1) through bolts, a workpiece turntable (2) is installed on the base (1), a motor is connected to the lower end of the workpiece turntable (2) and used for controlling the workpiece turntable (2) to rotate, through holes are distributed on the workpiece turntable (2) for installing and fixing workpieces, and the workpieces are placed at the upper end of the workpiece turntable (2); the movable sliding table is connected with the sliding table support through bolts, the telescopic motor (3) is vertically arranged at the top end of the sliding table support, the telescopic motor (3) is connected with the telescopic guide rod (18) through a sleeve (17), and the tightening rotary head is connected with the telescopic guide rod (18) through bolts.

2. The automatic screwing device for the inner shell according to claim 1, wherein the movable sliding table comprises a sliding guide rod (4), a movable screw rod (5), a base (6), a sliding table (7), a sliding block (8) and a support (9), the pair of movable sliding tables and the base (1) are symmetrically distributed, the sliding guide rod (4) is a polished rod, the sliding guide rod (4) is connected with the support (9) through a bolt, and a threaded hole is formed in the upper end of the support (9) for fastening the sliding guide rod (4); the sliding block (8) is provided with a through hole, the upper end of the sliding block (8) is provided with a threaded hole, the sliding block (8) is connected with the sliding guide rod (4) through the through hole, the threaded hole is partially processed into a boss, and the sliding block (8) is connected with the sliding table (7) through a bolt; the screw rod (5) is connected with the sliding table (7) through a screw rod sliding block fixed on the screw rod (5), and the screw rod (5) can control the sliding table to move; the base (6) is provided with through holes, the base (6) is connected with the base (1) through bolts, the support (9) is connected with the base (6) through bolts, and the sliding table (7) is provided with threaded holes for installing the sliding table support.

3. An automatic screwing device for an inner housing according to claim 1, wherein the sliding table support comprises four main supporting rods (10), two auxiliary supporting rods (11), two pairs of clamping rings (12), a pair of trusses (13), six pairs of fastening nuts (14), a first transverse plate (15) and a second transverse plate (16), the main supporting rods (10) and the auxiliary supporting rods (11) are respectively connected with the sliding table (7) through bolts, the first transverse plate (15) and the second transverse plate (16) are connected with the main supporting rods (10) and the auxiliary supporting rods (11) through bolts, and the clamping rings (12) are connected with the trusses (13) through bolts; the main support rod (10) and the auxiliary support rod (11) are all threaded at the upper end and the lower end, the fastening nut (14) is arranged at the upper end and the lower end of the main support rod (10) and the auxiliary support rod (11) for reinforcing, the middle part of the main support rod (10) is processed with a groove, the clamp ring (12) is fixed through the groove, the clamp ring (12) is processed with a fastening threaded hole and a connecting threaded hole, the clamp ring (12) is connected with the main support rod (10) through the fastening threaded hole, and the truss (13) is connected with the clamp ring (12) through bolts for reinforcing the main support rod (10).

4. An automatic tightening device for an inner housing according to claim 3, wherein threaded holes are formed at both ends of the first transverse plate (15), a through hole is formed in the middle part, and a semi-arc-shaped anti-back groove is formed in the lower end of the middle part; threaded holes are formed in the two ends of the second transverse plate (16), and semicircular notches are formed in the middle of the second transverse plate so as to facilitate installation and replacement of the tightening swivel and the counter bore.

5. The automatic screwing device of the inner shell according to claim 1, wherein the screwing rotary head comprises a telescopic motor (3), a telescopic guide rod (18), a sleeve (17), a guide rod sleeve (19), an anti-skid cylinder (20), a fastening bolt (21), a rib plate (22), an execution motor (23) and an inner hexagon drill bit (24), the telescopic motor (3) is connected with a through hole machined in the first transverse plate (15) through bolts, the telescopic motor (3) adopts a servo telescopic motor, a telescopic shaft extends out of the front section of the telescopic motor (3), and the lower end of the telescopic shaft of the telescopic motor (3) is connected with the upper end of the guide rod sleeve (19); the sleeve (17) is provided with a smooth through hole, the sleeve (17) is connected with a counter bore formed in the second transverse plate (16) through a bolt, and the telescopic shaft penetrates through the smooth through hole; the upper end of the telescopic guide rod (18) is connected with the guide rod sleeve (19) through a bolt, and the lower end of the telescopic guide rod (18) is connected with the anti-slip cylinder (20) through the fastening bolt (21); the tightening bolt (21) is fixedly connected with the rib plate (22), the rib plate (22) is fixedly connected with the execution motor (23), and the execution motor (23) is connected with the inner hexagon drill bit (24) through the execution motor (23) in a shaft manner; the execution motor (23) is a servo motor, and the execution motor (23) also comprises a planetary reduction gear which is matched with the execution motor; the inner hexagon drill bit (24) is provided with an inner hexagon deep hole for tightening the hexagon bolt, the upper edge of the inner hexagon deep hole is further provided with a chamfer for preventing stress concentration, and the lower end of the inner hexagon drill bit (24) is provided with a threaded hole for fastening the inner hexagon drill bit (24).

6. The automatic screwing device for the inner shell according to claim 5, wherein deep holes with different diameters are respectively processed at the upper end and the lower end of the guide rod sleeve (19), and an anti-slip groove is also processed at the lower end of the guide rod sleeve (19); the lower end of the guide rod sleeve (19) is connected with the upper end of the telescopic guide rod (18), and an anti-slip groove is machined on the telescopic guide rod (18) and is matched with the anti-slip groove of the guide rod sleeve (19).