Rapid clamping and centering device

Abstract

The invention discloses a quick clamping and centering device, which relates to the technical field of assembly and comprises an outer centering assembly, a centering body and an inner centering assembly. The outer centering assembly is arranged at one end of the centering body, and the inner centering assembly is arranged at the other end of the centering body. The outer centering assembly comprises a center rotating gear and at least three outer supporting arms. The central rotating gear is rotationally arranged on the centering body around a first axis; a rack meshed with the annular teeth on the central rotating gear is arranged on each outer supporting arm; the inner centering assembly is provided with at least three inner rocker arms, and the outer ends of the inner rocker arms can stretch out and draw back synchronously. The outer centering assembly and the inner centering assembly are coaxially arranged; the outer end of each outer supporting arm is used for abutting against the inner side wall of the first coaxial structure. The inner end of each inner rocker arm is used for abutting against the outer side wall of the second coaxial structure. The device is suitable for concentric assembly of structures of different sizes, reduces the assembly complexity of the concentric structure, improves the coaxiality of the concentric structure, and is simple and convenient to operate.

Description

Technical Field

[0001] The invention relates to the technical field of assembly, in particular to a quick clamping and centering device. Background Art

[0002] The solid rocket engine casing is used to bear the axial load of the rocket, ensuring that the fuel-carrying compartment of the missile is not damaged by axial pressure during storage and operation, thereby ensuring the stability of the missile structure: Since this type of composite rotating body requires different coaxial structures to be added upward during the molding process, repeated disassembly and centering are required during the molding process, so there are certain requirements for the coaxiality of different structures during the molding process and the ease of disassembly and assembly.

[0003] When assembling different concentric structures, different radii and different center axis diameters may be encountered. Currently, the only way to meet the coaxiality of each structure during the assembly process is to customize the corresponding supports for different parts. Therefore, there is an urgent need for a support that can adaptively center and support cylindrical parts with different center axis diameters and different radii. Summary of the invention

[0004] The purpose of the present invention is to provide a quick clamping and centering device to solve the problems existing in the above-mentioned prior art, adapt to the concentric assembly of structures of different sizes, reduce the cumbersomeness of concentric structure assembly, improve the coaxiality of concentric structure, and be simple and convenient to operate.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a quick clamping and centering device, comprising an external centering component, a centering body and an internal centering component; the external centering component is arranged at one end of the centering body, and the internal centering component is arranged at the other end of the centering body; the external centering component comprises a central rotating gear and at least three external support arms; a rotating sleeve is fixedly arranged on the centering body, and the central rotating gear is rotatably sleeved on the rotating sleeve around a first axis; an annular tooth is fixedly arranged on the circumferential outer side wall of the central rotating gear, and a rack is fixedly arranged on one side of each of the external support arms close to the central rotating gear, and the rack meshes with the annular tooth; and a limited position long groove is arranged on the external support arm, and the extension direction of the limited position long groove is the same as the extension direction of the rack, Two limiting columns are fixedly provided at positions corresponding to each of the limiting long grooves on the centering body, and the two limiting columns are located in the limiting long grooves; the inner centering assembly has at least three inner rocker arms, and each of the inner rocker arms is evenly arranged circumferentially around the second axis; one end of each of the inner rocker arms is rotatably connected to the centering body around the third axis, and the other end of each of the inner rocker arms is a free end, and each of the free ends can synchronously approach or move away from the second axis; the second axis is coaxial with the first axis, and the third axis is parallel to the second axis; the outer end of each of the outer support arms can extend out of the outer wall of the centering body and abut against the inner side wall of the first coaxial structure; and the free end of each of the inner rocker arms is used to abut against the outer side wall of the second coaxial structure.

[0007] Preferably, the inner centering component includes a rotating ring and at least three inner rocker arms; a limiting slider is provided on the rotating ring at a position corresponding to each inner rocker arm, and each limiting slider is rotatably connected to the rotating ring around a fourth axis, and the fourth axis is parallel to the second axis; a through hole is provided on the limiting slider, and an inner rocker arm is passed through the through hole; one end of the inner rocker arm is rotatably connected to the centering body around the third axis, and the other end of the inner rocker arm passes through the through hole and is used to abut against the outer wall of the second coaxial structure.

[0008] Preferably, the centering body comprises an upper plate, a lower plate and a fixed frame; the rotating sleeve is fixedly arranged in the middle of the lower plate; the center sleeve is fixedly arranged on the center rotating gear; the center rotating gear and the center sleeve are coaxially arranged; in the vertical direction, the center sleeve is located above the center rotating gear; the center rotating gear and the center sleeve are both rotatably sleeved on the rotating sleeve around the first axis; in the vertical direction, the upper plate is located above the lower plate; a accommodating gap is formed between the upper plate and the lower plate, and the center rotating gear and each of the outer support arms are located in the accommodating gap; the upper plate has an upper center through hole, and the upper ends of the rotating sleeve and the center sleeve are both located in the center through hole; in the vertical direction, the fixed frame is located above the center sleeve, and the fixed frame can limit the center sleeve from escaping from the rotating sleeve upward along the axis of the rotating sleeve; the fixed frame is fixedly connected to the upper plate and the lower plate.

[0009] Preferably, both ends of the centering body are provided with through holes, through which the annular teeth of the central rotating gear can be touched.

[0010] Preferably, the free ends of the outer support arms are rotatably provided with roller support heads, and the rotation axis of the roller support heads is parallel to the first axis.

[0011] Preferably, the free ends of the inner rocker arms are rotatably provided with roller chucks, and the rotation axis of the roller chucks is parallel to the first axis.

[0012] Preferably, the fixing frame includes a first connecting block, a connecting ring and a second connecting block; the first connecting block and the second connecting block are both fixedly connected to the connecting ring, and the first connecting block is positioned opposite to the second connecting block; limiting grooves are provided on the first connecting block and the second connecting block; an annular mounting groove is provided on the inner side wall of the center perforation of the upper plate; the first connecting block and the second connecting block are both located in the annular mounting groove; in the vertical direction, the upper end of the center sleeve is higher than the upper end of the rotating sleeve, and the upper end of the center sleeve is located in the limiting grooves of the first connecting block and the second connecting block; the first limiting block and the second limiting block are both fixedly connected to the rotating sleeve through a first connecting member, and the first limiting block and the second limiting block are both fixedly connected to the upper plate through a second connecting member.

[0013] Preferably, a limiting ring is fixedly provided on one side of the centering body close to the inner centering component; a penetrating guide limiting arc groove is provided on the side wall of the limiting ring at a position corresponding to the inner rocker arm, and the inner rocker arm is respectively inserted into the corresponding guide limiting arc groove.

[0014] Preferably, a rotating shaft rod is provided at a position of the centering body corresponding to the end of the inner rocker arm, and a rotating hole is provided at the end of the inner rocker arm; the rotating hole is sleeved on the rotating shaft rod, and the axes of the rotating hole and the rotating shaft rod are coaxial with the fourth axis.

[0015] Preferably, the upper plate includes an outer connecting ring, an inner connecting ring and a plurality of fan-shaped connecting blocks; the outer connecting ring is located outside the inner connecting ring, and the outer side of the fan-shaped connecting block is fixedly connected to the outer connecting ring, and the inner side of the fan-shaped connecting block is fixedly connected to the inner connecting ring; each of the fan-shaped connecting blocks is evenly distributed circumferentially around the first axis; the lower planes of the outer connecting ring, each of the fan-shaped connecting blocks and the inner connecting ring are flush, and the accommodating gap is formed between them and the upper plane of the lower plate.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The quick clamping and centering device provided by the present invention uses an outer centering component composed of a central rotating gear and an outer support arm to align with the first coaxial structure, that is, the free ends of each outer support arm that moves synchronously abut against the inner side wall of the first coaxial structure; and each inner rocker arm of the inner centering component at the other end of the centering body is used to align with the second coaxial structure, that is, the free ends of each inner rocker arm that moves synchronously clamp the outer side wall of the second coaxial structure; based on the coaxial setting of the outer centering component and the inner centering component, the coaxial centering correction and alignment of the first coaxial structure and the second coaxial structure are achieved, and the rapid assembly of the two is achieved; and the outer support arm and the inner rocker arm that can move synchronously are adopted to achieve the coordinated use of components of different sizes, reduce the cumbersomeness of the traditional assembly of two structures of different diameters, improve the coaxiality coordination between the two, can quickly perform double centering on the two, and ensure a high coaxial effect; and the overall structure is simple, light, and easy to carry.

[0018] Furthermore, the inner centering component is composed of a rotating ring and a plurality of inner rocker arms, and each inner rocker arm is passed through a corresponding limit slider. When the rotating ring is rotated, the rotating ring rotates with each limit slider, and the inner rocker arms passed through the inside thereof can follow and realize synchronous approaching or moving away from the second axis. The structure is simple, and the centering operation of the second coaxial structure is convenient.

[0019] Furthermore, the centering body consists of three parts: an upper plate, a lower plate and a fixing frame. The upper plate and the lower plate are connected by the fixing frame, and an installation space for an external centering component is formed between the upper plate and the lower plate. The structure is simple, and the installation of the external centering component can achieve limiting constraints in all directions, so that it is stably connected to the centering body; and the up and down swinging of the support arm in the axial direction is limited, making the structure more stable.

[0020] Furthermore, the provision of the through hole enables the user to conveniently access the central rotating gear from both ends of the entire device, thereby rotating and opening each outer support arm.

[0021] Furthermore, the provision of the roller support head enables the free end of the outer support arm to form rolling contact with the inner side wall of the first coaxial structure, thereby reducing wear and extending service life.

[0022] Furthermore, the setting of the roller chuck can form rolling contact between the inner rocker arm and the outer side wall of the second coaxial structure, thereby reducing the friction loss between the two, protecting and extending its service life; and after clamping the second coaxial structure, it can still be rotated, making the assembly of the structure more convenient and more precise.

[0023] Furthermore, the fixing frame is composed of a first connecting block, a connecting ring and a second connecting block, and its structure is more concise, and the number of components and weight can be reduced.

[0024] Furthermore, the limiting ring can limit the swinging direction of each inner rocker arm, which enables each inner rocker arm to rotate under the restriction of the corresponding guide limiting arc groove, thereby changing the clamping diameter and performing the centering operation at the same time, which is convenient and quick.

[0025] Furthermore, the rotational connection between the inner rocker arm and the centering body adopts a rotating shaft rod and a rotating hole, which has a simple and convenient structure, is easy to process and manufacture, and the rotation is more reliable.

[0026] Furthermore, the upper plate is composed of an outer connecting ring, a plurality of fan-shaped connecting blocks and an inner connecting ring, and its structure is simpler, which can realize a lightweight design for the entire device, and a plurality of fan-shaped connecting blocks are used to realize the connection between the inner connecting ring and the outer connecting ring, and its connection structure is more firm and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of the overall structure of the quick clamping and centering device provided by the present invention;

[0029] Figure 2 An exploded view of the structure of the quick clamping and centering device provided by the present invention;

[0030] Figure 3 A schematic structural diagram of the external centering assembly of the quick clamping centering device provided by the present invention being installed on the lower plate;

[0031] Figure 4 A schematic diagram of the structure of the quick clamping and centering device provided by the present invention in a cut-away state;

[0032] Figure 5 This is a schematic diagram of the bottom structure of an exploded view of the structure of the quick clamping and centering device provided by the present invention.

[0033] In the figure:

[0034] 100-Quick clamping and centering device;

[0035] 10-external centering assembly; 11-central rotating gear; 111-annular gear; 12-central sleeve; 13-external support arm; 131-rack; 132-limiting long groove; 14-roller support head;

[0036] 20-centering body; 21-upper plate; 211-outer connecting ring; 212-sector-shaped connecting block; 213-inner connecting ring; 214-annular mounting groove; 215-rotating shaft rod; 22-fixed frame; 221-first connecting block; 222-connecting ring; 223-second connecting block; 224-limiting groove; 225-first connecting member; 226-second connecting member; 23-lower plate; 231-rotating sleeve; 232-limiting column; 24-limiting circular ring; 241-guide limiting arc groove; 25-through hole;

[0037] 30-internal centering assembly; 31-rotating ring; 32-inner rocker arm; 321-rotating hole; 33-limiting slider; 34-roller chuck. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The purpose of the present invention is to provide a quick clamping and centering device to solve the problems existing in the prior art, adapt to the concentric assembly of structures of different sizes, reduce the complexity of concentric structure assembly, improve the coaxiality of the concentric structure, and be simple and convenient to operate.

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Embodiment 1

[0042] This embodiment provides a quick clamping and centering device 100, which is mainly but not limited to being used for quick clamping and centering in composite material shell winding molding, such as Figure 1 to Figure 5 As shown, it includes an outer centering component 10, a centering body 20 and an inner centering component 30; the outer centering component 10 is arranged at one end of the centering body 20, and the inner centering component 30 is arranged at the other end of the centering body 20; the outer centering component 10 includes a central rotating gear 11 and at least three outer support arms 13; a rotating sleeve 231 is fixedly arranged on the centering body 20, and the central rotating gear 11 is rotatably sleeved on the rotating sleeve 231 around the first axis; an annular tooth 111 is fixedly arranged on the circumferential outer side wall of the central rotating gear 11, and a rack 131 is fixedly arranged on one side of each outer support arm 13 close to the central rotating gear 11, and the rack 131 is meshed with the annular tooth 111; and a limited long groove 132 is arranged on the outer support arm 13, and the extension direction of the limited long groove 132 is the same as that of the rack 131 The extension direction is the same, and two limiting columns 232 are fixedly provided at the positions corresponding to each limiting long groove 132 on the centering body 20, and the two limiting columns 232 are both located in the limiting long groove 132; the inner centering assembly 30 has at least three inner rocker arms 32, and each inner rocker arm 32 is evenly arranged circumferentially around the second axis; one end of each inner rocker arm 32 is rotatably connected to the centering body 20 around the third axis, and the other end of each inner rocker arm 32 is a free end, and each free end can synchronously approach or move away from the second axis; the second axis is coaxial with the first axis, and the third axis is parallel to the second axis; the outer end of each outer support arm 13 can extend out of the outer wall of the centering body 20 and abut against the inner side wall of the first coaxial structure; and the free end of each inner rocker arm 32 is used to abut against the outer side wall of the second coaxial structure.

[0043] The outer centering assembly 10 composed of a central rotating gear 11 and an outer support arm 13 is used to align with the first coaxial structure, that is, the free end of each outer support arm 13 that moves synchronously abuts against the inner side wall of the first coaxial structure; and each inner rocker arm 32 of the inner centering assembly 30 at the other end of the centering body 20 is used to align with the second coaxial structure, that is, the free end of each inner rocker arm 32 that moves synchronously clamps the outer side wall of the second coaxial structure; based on the coaxial setting of the outer centering assembly 10 and the inner centering assembly 30, the coaxial centering correction alignment of the first coaxial structure and the second coaxial structure is achieved, and the rapid assembly of the two is achieved; and the outer support arm 13 and the inner rocker arm 32 that can move synchronously are adopted to achieve the coordinated use of components of different sizes, reduce the cumbersomeness of the traditional assembly of two structures of different diameters, improve the coaxiality coordination between the two, and can quickly double-center the two to ensure a high coaxial effect; and the overall structure is simple, light, and easy to carry.

[0044] Specifically, the synchronous structure formed by the three external support arms 13 driven by the rotation of the central rotating gear 11 can quickly center the first coaxial structure and achieve adaptive fit to the size of its inner wall. The three external support arms 13 with racks 131 can be driven by the central rotating gear 11 to simultaneously extend and retract to the same length, supporting its inner wall and playing a centering role. The second coaxial structure can be quickly centered by the clamping structure of the rotating ring 31 and the three inner rocker arms 32, and can also adaptively fit and clamp its outer wall. The three inner rocker arms 32 can be driven by the rotation of the rotating ring 31 to simultaneously change the angle and clamp on the second coaxial structure accordingly, playing a centering role and ensuring the high coaxiality between the first coaxial structure and the second coaxial structure.

[0045] Specifically, the roller support head 14 and the roller clamp 34 are arranged corresponding to the free ends of the outer centering component 10 and the inner centering component 30, which can ensure that the angle of the support member (i.e., the first coaxial structure) can be adjusted in real time during the assembly of the support member, thereby achieving precise assembly, and can ensure that the support member will not be rotated and deformed due to residual stress when the support is rotated and disassembled. It solves the inconvenience of repeated positioning and disassembly during the molding process of the carbon fiber composite material rotating body, and effectively improves the efficiency of disassembly and centering during the molding process of the composite material rotating body.

[0046] Among them, the relevant structural description of the outer centering component 10 is as follows:

[0047] Among the optional solutions of this embodiment, it is more preferred that Figure 1 to Figure 5 As shown, the free ends of the outer support arms 13 are rotatably provided with roller support heads 14, and the rotation axis of the roller support heads 14 is parallel to the first axis. The provision of the roller support heads 14 enables the free ends of the outer support arms 13 to form rolling contact with the inner side wall of the first coaxial structure, thereby reducing wear and extending service life.

[0048] Specifically, the three outer support arms 13 are evenly meshed with the central rotating gear 11 at intervals of 120°.

[0049] Specifically, the limiting slot 132 on the outer support arm 13 can be as follows: Figure 1 to Figure 5 As shown, it is a through structure, but it can also be a non-through structure.

[0050] Specifically, two pairs of limiting columns 232 are evenly and fixedly arranged on the upper surface of the lower plate 23 at intervals of 120°, and each two limiting columns 232 correspond to one outer support arm 13, and the two limiting columns 232 are located in the limiting long groove 132 of the support arm.

[0051] Specifically, as the central rotating gear 11 rotates, the outer supporting arm 13 can only make limited movements on a predetermined path under the cooperation and limitation of the limiting column 232 and the limiting long groove 132 .

[0052] Among them, the relevant structural description of the inner centering component 30 is as follows:

[0053] Among the optional solutions of this embodiment, it is more preferred that Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the inner centering assembly 30 includes a rotating ring 31 and at least three inner rocker arms 32; a limit slider 33 is provided at a position corresponding to each inner rocker arm 32 on the rotating ring 31, and each limit slider 33 is connected to the rotating ring 31 for rotation around the fourth axis, and the fourth axis is parallel to the second axis; a through hole is provided on the limit slider 33, and an inner rocker arm 32 is inserted in the through hole; one end of the inner rocker arm 32 is connected to the centering body 20 for rotation around the third axis, and the other end of the inner rocker arm 32 passes through the through hole and is used to abut against the outer wall of the second coaxial structure. The inner centering assembly 30 is composed of a rotating ring 31 and a plurality of inner rocker arms 32, and each inner rocker arm 32 is inserted on the corresponding limit slider 33. When the rotating ring 31 is rotated, the rotating ring 31 rotates with each limit slider 33, and the inner rocker arm 32 inserted inside it can follow and realize the synchronous approach or distance action relative to the second axis. It has a simple structure and is convenient for centering the second coaxial structure.

[0054] Among the optional solutions of this embodiment, it is more preferred that Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the free end of the inner rocker arm 32 is rotatably provided with a roller chuck 34, and the rotation axis of the roller chuck 34 is parallel to the first axis. The provision of the roller chuck 34 enables the inner rocker arm 32 to form a rolling contact with the outer side wall of the second coaxial structure, thereby reducing the friction loss between the two, protecting and extending their service life; and after clamping the second coaxial structure, the rotation operation can still be performed, making the assembly of the structure more convenient and more accurate.

[0055] Among the optional solutions of this embodiment, it is more preferred that Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, a limiting circular ring 24 is fixedly provided on one side of the centering body 20 close to the inner centering assembly 30; a penetrating guide limiting arc groove 241 is provided on the side wall of the limiting circular ring 24 at the position corresponding to the inner rocker arm 32, and the inner rocker arm 32 is respectively penetrated in the corresponding guide limiting arc groove 241. The limiting circular ring 24 can limit the swing direction of each inner rocker arm 32, which enables each inner rocker arm 32 to rotate under the restriction of the corresponding guide limiting arc groove 241, and the centering operation is performed while changing the clamping diameter, which is convenient and quick.

[0056] Among the optional solutions of this embodiment, it is more preferred that Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the centering body 20 is provided with a rotating shaft rod 215 at a position corresponding to the end of the inner rocker arm 32, and the end of the inner rocker arm 32 is provided with a rotating hole 321; the rotating hole 321 is sleeved on the rotating shaft rod 215, and the axes of the rotating hole 321 and the rotating shaft rod 215 are coaxial with the fourth axis. The rotation connection between the inner rocker arm 32 and the centering body 20 adopts the method of the rotating shaft rod 215 and the rotating hole 321, which has a simple structure, is convenient, can be processed and manufactured, and has more reliable rotation.

[0057] Specifically, by rotating the rotating ring 31, each limit slider 33 is driven to rotate, so that the inner rocker arm 32 rotates under the restriction of the limit slider 33, and the centering operation is performed while changing the clamping diameter, which is convenient and quick.

[0058] Among them, the relevant structure description of the centering body 20 is as follows:

[0059] Among the optional solutions of this embodiment, it is more preferred that Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, both ends of the centering body 20 are provided with through holes 25, through which the ring teeth 111 of the central rotating gear 11 can be touched. The provision of the through holes 25 can facilitate the user to touch the central rotating gear 11 from both ends of the entire device, thereby rotating and opening each outer support arm 13.

[0060] Specifically, corresponding through holes 25 are formed on the upper plate 21 and the lower plate 23 of the centering body 20 .

[0061] Among the optional solutions of this embodiment, it is more preferred that Figure 1 to Figure 5As shown, the centering body 20 includes an upper plate 21, a lower plate 23 and a fixing frame 22; a rotating sleeve 231 is fixedly arranged in the middle of the lower plate 23; a central sleeve 12 is fixedly arranged on the central rotating gear 11; the central rotating gear 11 and the central sleeve 12 are coaxially arranged; in the vertical direction, the central sleeve 12 is located above the central rotating gear 11; the central rotating gear 11 and the central sleeve 12 are both rotatably sleeved on the rotating sleeve 231 around the first axis; in the vertical direction, the upper plate 21 is located at the lower plate 23 Above; an accommodating gap is formed between the upper plate 21 and the lower plate 23, and the central rotating gear 11 and the outer support arms 13 are all located in the accommodating gap; the upper plate 21 has an upper center through hole, and the upper ends of the rotating sleeve 231 and the center sleeve 12 are both located in the center through hole; in the vertical direction, the fixing frame 22 is located above the center sleeve 12, and the fixing frame 22 can limit the center sleeve 12 from escaping from the rotating sleeve 231 upward along the axis of the rotating sleeve 231; the fixing frame 22 is fixedly connected to the upper plate 21 and the lower plate 23. The centering body 20 is composed of three parts: an upper plate 21, a lower plate 23 and a fixing frame 22. The upper plate 21 and the lower plate 23 are connected by the fixing frame 22, and an installation space for the external centering component 10 is formed between the upper plate 21 and the lower plate 23. The structure is simple, and the installation of the external centering component 10 can be limited in all directions, so that it is stably connected to the centering body 20; and the up and down swinging of the support arm in the axial direction is limited, making the structure more stable.

[0062] Among the optional solutions of this embodiment, it is more preferred that Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the upper plate 21 includes an outer connecting ring 211, an inner connecting ring 213 and a plurality of fan-shaped connecting blocks 212; the outer connecting ring 211 is located outside the inner connecting ring 213, and the outer side of the fan-shaped connecting block 212 is fixedly connected to the outer connecting ring 211, and the inner side of the fan-shaped connecting block 212 is fixedly connected to the inner connecting ring 213; each fan-shaped connecting block 212 is evenly distributed circumferentially around the first axis; the lower planes of the outer connecting ring 211, each fan-shaped connecting block 212 and the inner connecting ring 213 are flush, and an accommodation gap is formed between them and the upper plane of the lower plate 23. The upper plate 21 is composed of the outer connecting ring 211, the plurality of fan-shaped connecting blocks 212 and the inner connecting ring 213, and its structure is simpler, and a lightweight design can be achieved for the entire device, and multiple fan-shaped connecting blocks 212 are used to achieve the connection between the inner connecting ring 213 and the outer connecting ring 211, and its connection structure is more firm and reliable.

[0063] Among the optional solutions of this embodiment, it is more preferred that Figure 1 to Figure 5As shown, the fixing frame 22 includes a first connecting block 221, a connecting ring 222 and a second connecting block 223; the first connecting block 221 and the second connecting block 223 are both fixedly connected to the connecting ring 222, and the first connecting block 221 and the second connecting block 223 are positioned opposite to each other; a limiting groove 224 is provided on the first connecting block 221 and the second connecting block 223; an annular mounting groove 214 is provided on the inner side wall of the central perforation of the upper plate 21; the first connecting block 221 and the second connecting block 223 are both located in the annular mounting groove 214; in the vertical direction, the upper end of the center sleeve 12 is higher than the upper end of the rotating sleeve 231, and the upper end of the center sleeve 12 is located in the limiting grooves 224 of the first connecting block 221 and the second connecting block 223; the first limiting block and the second limiting block are both fixedly connected to the rotating sleeve 231 through the first connecting member 225, and the first limiting block and the second limiting block are both fixedly connected to the upper plate 21 through the second connecting member 226. The fixing frame 22 is composed of a first connecting block 221 , a connecting ring 222 and a second connecting block 223 , and has a simpler structure, and can reduce the number of components and weight.

[0064] Among them, regarding other related instructions:

[0065] Specifically, the quick clamping and centering device 100 of this embodiment can be applied to the assembly and molding process of composite material rotating bodies of various sizes.

[0066] Specifically, it can ensure that the new rotating body structure and the rotating body structure to be paired are on the same axis.

[0067] Specifically, the conventional clamp does not have a mechanism that automatically adapts to the diameter of the rotating body (i.e., the first coaxial structure) and the diameter of the central axis (i.e., the second coaxial structure). When a model is changed, a special clamp needs to be replaced, which is very wasteful. In addition, during the assembly process, since the new rotating body may need to be aligned with the existing structure when assembled, it is very convenient for the quick clamping and centering device 100 of this embodiment to perform the rotation alignment operation of the new rotating body while ensuring the coaxiality during the assembly process.

[0068] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A quick clamping and centering device, characterized in that: It includes an external centering component, a centering body and an internal centering component; The outer centering assembly is arranged at one end of the centering body, and the inner centering assembly is arranged at the other end of the centering body; The external centering assembly includes a central rotating gear and at least three external support arms; a rotating sleeve is fixedly provided on the centering body, and the central rotating gear is rotatably sleeved on the rotating sleeve around a first axis; an annular tooth is fixedly provided on the circumferential outer side wall of the central rotating gear, and a rack is fixedly provided on a side of each external support arm close to the central rotating gear, and the rack is meshed with the annular tooth; and a limited long groove is provided on the external support arm, and the extension direction of the limited long groove is the same as the extension direction of the rack, and two limiting columns are fixedly provided at the positions corresponding to each of the limiting long grooves on the centering body, and the two limiting columns are both located in the limiting long grooves; The inner centering assembly has at least three inner rocker arms, each of which is evenly arranged around the second axis; one end of each inner rocker arm is rotatably connected to the centering body around the third axis, and the other end of each inner rocker arm is a free end, and each free end can synchronously approach or move away from the second axis; The second axis is coaxial with the first axis, and the third axis is parallel to the second axis; The outer end of each of the outer support arms can extend out of the outer wall of the centering body and abut against the inner wall of the first coaxial structure; and the free end of each of the inner rocker arms is used to abut against the outer wall of the second coaxial structure.

2. The quick clamping and centering device according to claim 1, characterized in that: The inner centering assembly includes a rotating ring and at least three inner rocker arms; A limiting slider is provided on the rotating ring at a position corresponding to each of the inner rocker arms, and each of the limiting sliders is rotatably connected with the rotating ring around a fourth axis, and the fourth axis is parallel to the second axis; a through hole is provided on the limiting slider, and an inner rocker arm is inserted in the through hole; one end of the inner rocker arm is rotatably connected with the centering body around the third axis, and the other end of the inner rocker arm passes through the through hole and is used to abut against the outer wall of the second coaxial structure.

3. The quick clamping and centering device according to claim 1 is characterized in that: The centering body comprises an upper plate, a lower plate and a fixing frame; The rotating sleeve is fixedly arranged in the middle of the lower plate; A central sleeve is fixedly arranged on the central rotating gear; the central rotating gear and the central sleeve are coaxially arranged; in the vertical direction, the central sleeve is located above the central rotating gear; the central rotating gear and the central sleeve are both rotatably sleeved on the rotating sleeve around the first axis; In the vertical direction, the upper plate is located above the lower plate; an accommodation gap is formed between the upper plate and the lower plate, and the central rotating gear and each of the outer support arms are located in the accommodation gap; The upper plate has an upper central through hole, and the upper ends of the rotating sleeve and the central sleeve are both located in the central through hole; In the vertical direction, the fixing frame is located above the central sleeve, and the fixing frame can limit the central sleeve from escaping from the rotating sleeve upward along the axis of the rotating sleeve; the fixing frame is fixedly connected to both the upper plate and the lower plate.

4. The quick clamping and centering device according to claim 1 is characterized in that: Both ends of the centering body are provided with through holes, through which the annular teeth of the central rotating gear can be touched.

5. The quick clamping and centering device according to claim 1, characterized in that: The free ends of the outer support arms are rotatably provided with roller support heads, and the rotation axis of the roller support heads is parallel to the first axis.

6. The quick clamping and centering device according to claim 1, characterized in that: The free ends of the inner rocker arms are rotatably provided with roller chucks, and the rotation axis of the roller chucks is parallel to the first axis.

7. The quick clamping and centering device according to claim 3 is characterized in that: The fixing frame comprises a first connecting block, a connecting ring and a second connecting block; The first connection block and the second connection block are both fixedly connected to the connection ring, and the first connection block is opposite to the second connection block; the first connection block and the second connection block are both provided with limiting grooves; An annular mounting groove is provided on the inner side wall of the central through hole of the upper plate; the first connecting block and the second connecting block are both located in the annular mounting groove; In the vertical direction, the upper end of the central sleeve is higher than the upper end of the rotating sleeve, and the upper end of the central sleeve is located in the limiting grooves of the first connecting block and the second connecting block; The first limit block and the second limit block are both fixedly connected to the rotating sleeve via a first connecting member, and the first limit block and the second limit block are both fixedly connected to the upper plate via a second connecting member.

8. The quick clamping and centering device according to claim 2, characterized in that: A limiting circular ring is fixedly provided on one side of the centering body close to the inner centering component; The positions of the limiting circular ring side walls corresponding to the inner rocker arms are all provided with penetrating guide limiting arc grooves, and the inner rocker arms are respectively inserted into the corresponding guide limiting arc grooves.

9. The quick clamping and centering device according to claim 2, characterized in that: The centering body is provided with a rotating shaft rod at a position corresponding to the end of the inner rocker arm, and the end of the inner rocker arm is provided with a rotating hole; The rotating hole is sleeved on the rotating shaft rod, and the axes of the rotating hole and the rotating shaft rod are coaxial with the fourth axis.

10. The quick clamping and centering device according to claim 3, characterized in that: The upper plate comprises an outer connecting ring, an inner connecting ring and a plurality of fan-shaped connecting blocks; The outer connecting ring is located outside the inner connecting ring, and the outer side of the fan-shaped connecting block is fixedly connected to the outer connecting ring, and the inner side of the fan-shaped connecting block is fixedly connected to the inner connecting ring; each of the fan-shaped connecting blocks is evenly distributed around the first axis; The lower planes of the outer connecting ring, each of the fan-shaped connecting blocks and the inner connecting ring are flush with each other, and the accommodation gap is formed between them and the upper plane of the lower plate.

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