Clamping tool for aero-engine turbine shell sector

Abstract

The invention relates to the technical field of aero-engine part manufacturing, and discloses a clamping tool for aero-engine turbine shell sections.The clamping tool comprises a gland and a pressing block, the gland can move in the axial direction of a tool body, and in the process that the gland is away from a workpiece, a linkage mechanism enables the pressing block to move towards the inner side in the radial direction of the tool body; in the process that the gland gets close to the workpiece, the linkage mechanism enables the pressing block to move towards the outer side in the radial direction of the tool body so that the gland and the pressing block can make contact with the workpiece to form a pre-pressing state, and the gland can further move in the circumferential direction of the tool body so that the gland in the pre-pressing state can press the workpiece in the axial direction of the tool body. The pressing blocks in the pre-pressing state press the workpiece in the radial direction of the tool body. A part does not need to be pressed and fixed through a screw, so that the part is more convenient to mount and dismount, the labor intensity of workers is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of manufacturing parts of aero-engines, and particularly to a clamping tool for a fan segment of a turbine housing of an aero-engine. Background Art

[0002] The turbine housing of an aero-engine is one of the important components of the aero-engine. It belongs to the casing parts, is the main load-bearing component on the aero-engine, is the key component for the engine to bear loads and contain, and is a typical thin-walled structural part.

[0003] The parts at the end of the turbine housing of the aero-engine (also called the first-stage turbine housing fan segment) are composed of 9 turbine housing fan segments. The turbine housing fan segment has the characteristics of complex shape and thin wall, and the turbine housing fan segment is a non-complete ring-shaped part. When the inner arc surface of the turbine housing fan segment is worn and damaged, it is necessary to repair the inner arc surface by laser surfacing, and after repair, it is also necessary to finish-machine the inner arc surface.

[0004] During finish machining, it is necessary to clamp the turbine housing fan segment. However, the existing clamping tool needs to press the turbine housing fan segment by screws when installing the turbine housing fan segment, and when disassembling the turbine housing fan segment, it is necessary to remove the screws first before the turbine housing fan segment can be taken off, which reduces the working efficiency. Summary of the Invention

[0005] The present application discloses a clamping tool for a fan segment of a turbine housing of an aero-engine to solve the problem of low installation and disassembly efficiency of the turbine housing fan segment in the prior art.

[0006] To solve the above problems, the present invention adopts the following technical solutions: A clamping tool for a fan segment of a turbine housing of an aero-engine, comprising: A gland, which is arranged on the tool body and is used to clamp the workpiece placed on the tool body along the axial direction of the tool body; A pressing block, which is arranged on the tool body and is connected to the gland through a linkage mechanism. The pressing block is used to clamp the workpiece placed on the tool body along the radial direction of the tool body; The gland can move along the axial direction of the tool body. During the process of the gland moving away from the workpiece, the linkage mechanism makes the pressing block move towards the inside along the radial direction of the tool body. During the process of the gland moving close to the workpiece, the linkage mechanism makes the pressing block move towards the outside along the radial direction of the tool body, so that the gland and the pressing block contact the workpiece to form a pre-pressing state; The gland can also move along the circumferential direction of the tool body, so that the gland in the pre-pressing state presses the workpiece along the axial direction of the tool body, and the pressing block in the pre-pressing state presses the workpiece along the radial direction of the tool body.

[0007] The technical solution adopted by the present invention can achieve the following beneficial effects: By moving the gland along the axial direction of the tooling body, when the gland moves away from the tooling body, the gland makes the pressing block move inward along the radial direction of the tooling body through the linkage mechanism, so as to facilitate the staff to install the workpiece on the tooling body. Then, move the gland towards the tooling body, pre-press one end of the workpiece through the gland, and at the same time, the gland makes the pressing block move outward along the radial direction of the tooling body through the linkage mechanism, so that the pressing block pre-presses the other end of the workpiece. Then, rotate the gland along the circumferential direction of the tooling body. During the rotation process, make the gland in the pre-pressed state press the workpiece along the axial direction of the tooling body, and at the same time, the gland makes the pressing block in the pre-pressed state press the workpiece along the radial direction of the tooling body through the linkage mechanism, so as to realize the positioning of the workpiece. The present invention pre-presses the workpiece through the gland and the pressing block, which can prevent the workpiece from moving before the final pressing. The progressive load increase is realized through two-stage pressing (pre-pressing → final pressing), reducing the risk of deformation or damage of the precision workpiece caused by the instantaneous impact load. And there is no need to press and fix the workpiece with screws, making the installation and disassembly of the workpiece more convenient, not only reducing the labor intensity of the staff, but also improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0009] Figure 1 is an isometric view of a clamping tooling disclosed in some embodiments of the present application; Figure 2 is an isometric view of the clamping tooling with the gland hidden disclosed in some embodiments of the present application; Figure 3 is a schematic cross-sectional structure view of the clamping tooling disclosed in some embodiments of the present application; Figure 4 is Figure 3 an enlarged structure view of part A in Figure 5 is Figure 4 an enlarged structure view of part B in Figure 6 is Figure 4 an enlarged structure view of part C in Figure 7 is an isometric cross-sectional view of the clamping tooling disclosed in some embodiments of the present application; Figure 8 isFigure 7 Schematic diagram of the enlarged structure at D in the [Chinese context]; Figure 9 Is an axonometric view of the tooling body disclosed in some embodiments of the present application; Figure 10 Is a first sectional axonometric view of the tooling body disclosed in some embodiments of the present application; Figure 11 Is Figure 10 Schematic diagram of the enlarged structure at E in the [Chinese context]; Figure 12 Is a second sectional axonometric view of the tooling body disclosed in some embodiments of the present application; Figure 13 Is Figure 12 Schematic diagram of the enlarged structure at F in the [Chinese context]; Figure 14 Is a third sectional axonometric view of the tooling body disclosed in some embodiments of the present application; Figure 15 Is Figure 14 Schematic diagram of the enlarged structure at G in the [Chinese context]; Figure 16 Is a schematic diagram of the workpiece disclosed in some embodiments of the present application; Figure 17 Is a schematic diagram of multiple workpieces disclosed in some embodiments of the present application.

[0010] In the figure: 100 - gland; 200 - pressure block; 300 - linkage mechanism; 310 - first moving component; 311 - first moving part; 3111 - first moving groove; 3112 - moving block; 3113 - pull rod; 3114 - first spring; 3115 - sliding groove; 3116 - sliding block; 3117 - slot; 3118 - connecting rod; 312 - first wedge block; 3121 - limiting rod; 320 - second moving component; 321 - second moving part; 3211 - second moving groove; 3212 - fixing plate; 3213 - movable rod; 3214 - second spring; 322 - second wedge block; 3221 - limiting groove; 400 - first plugging component; 410 - first communication hole; 420 - first plug rod; 430 - first pulling block; 440 - first guiding groove; 450 - first guiding block; 460 - third spring; 500 - second plugging component; 510 - second communication hole; 520 - second plug rod; 530 - second pulling block; 540 - second guiding groove; 550 - second guiding block; 560 - fourth spring; 10 - Tooling body; 11 - Engaging part; 12 - Outer side; 13 - Inner side; 20 - Workpiece; 21 - Front concave section; 22 - Straight section; 23 - Rear concave section; 24 - Front groove; 25 - Rear groove. Detailed implementation mode

[0011] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts fall within the scope protected by the present invention.

[0012] The terms "first", "second", "third", "fourth", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", "third", "fourth", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or several. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / ", generally represents an "or" relationship between the associated objects before and after.

[0013] The inventor found during the actual use process that the previous clamping tooling clamped both ends of the fan section of the turbine housing through a vise and milled the inner arc surface of the fan section of the turbine housing. However, this clamping and positioning accuracy is poor, the parts are prone to deformation, and only 1 fan section of the turbine housing can be milled at a time, resulting in low processing efficiency. After improvement, the existing clamping tooling is set on the machine tool, and the size and position accuracy of the parts are guaranteed through turning processing. Although 9 fan sections of the turbine housing can be processed at one time, after the fan section of the turbine housing is installed on the clamping tooling, it is necessary to press both ends of the fan section of the turbine housing. 2 screws are required for each end of each fan section of the turbine housing for pressing and fixing. That is to say, 36 screws need to be installed for one processing. When disassembling, the 36 screws need to be removed first before the fan section of the turbine housing can be taken off, and then the above steps are repeated for installation and disassembly, resulting in a large labor intensity for the staff, reducing the work efficiency. Moreover, when installing the screws, the screws at one end of the fan section of the turbine housing are installed first, and then the screws at the other end of the fan section of the turbine housing are installed. And the single-direction first contact with one end of the fan section of the turbine housing is likely to cause the workpiece to shift, resulting in quality problems of the workpiece in subsequent processing.

[0014] The following combines the attached Figures 1 to 17, a clamping tool for a fan segment of an aero-engine turbine housing provided by the present application is described in detail through specific embodiments and their application scenarios.

[0015] Referring to Figures 1 to 4 , Figure 7 and Figure 8 , a clamping tool for a fan segment of an aero-engine turbine housing includes: a gland 100 and a pressing block 200; The gland 100 is arranged on the tooling body 10 and is used to clamp the workpiece 20 placed on the tooling body 10 along the axial direction of the tooling body 10; Specifically, referring to Figure 1 , the gland 100 is annular; Referring to Figures 1 to 4 , Figures 7 to 9 , one end of the tooling body 10 is connected to the shaft of the machine tool, and the other end of the tooling body 10 is used to install the workpiece 20; the tooling body 10 is annular; an annular engaging portion 11 is provided inside the tooling body 10, and the axial cross-section of the engaging portion 11 is L-shaped; the side surface of the end of the tooling body 10 away from the shaft of the machine tool is the outer side surface 12, and the outer side surface 12 is an annular plane; the outer side surface 12 cooperates with the gland 100; there is an annular plane inside the tooling body 10, which is the inner side surface 13, and the inner side surface 13 slidably cooperates with the pressing block 200; Referring to Figures 1 to 4 , Figure 7 , Figure 8 , Figure 16 and Figure 17 , the workpiece 20 is a fan segment of the turbine housing, the arc angle of the workpiece 20 is 39.9°, it includes three parts, one end is the front concave section 21, the middle is the straight section 22, and the other end is the rear concave section 23, and its whole is arranged in an arc shape; the inner arc surface of its straight section 22 is the surface to be precision turned; the axial cross-section of the front concave section 21 is L-shaped, and a front groove 24 is formed between the front concave section 21 and the straight section 22, and the front groove 24 matches the engaging portion 11, so that the front concave section 21 can be attached to the engaging portion 11; when the workpiece 20 is installed on the tooling body 10, the lower part of the side of the front concave section 21 away from the engaging portion 11 extends out of the outer side surface 12 of the tooling body 10, the upper part of the side of the front concave section 21 away from the engaging portion 11 can be flush with the outer side surface 12 of the tooling body 10, and the upper part of the side of the front concave section 21 away from the engaging portion 11 matches the gland 100; the axial cross-section of the rear concave section 23 is L-shaped, and a rear groove 25 is formed on the side of the rear concave section 23 away from the front concave section 21; the rear groove 25 matches the pressing block 200, the rear concave section 23 has a horizontal part and a vertical part, the vertical part of the rear concave section 23 is connected to the straight section 22, and the horizontal part of the rear concave section 23 is connected to the top of the vertical part of the rear concave section 23; During the actual use process, the inventor found that in the traditional method, the gland 100 is connected to the tooling body 10 by screws, and the number of screws is generally 18. In this embodiment, an elastic rubber pad (not shown in the figure) is installed on the side of the gland 100 close to the tooling body 10, and the upper part of the front concave section 21 on the side away from the engaging part 11 is protected by the elastic rubber pad (not shown in the figure) of the gland 100. Refer to Figure 3 , Figure 4 , Figure 7 and Figure 8 , the tooling body 10 makes use of the outer diameter of the workpiece 20 matching the inner diameter of the tooling body 10, so that each section of the workpiece 20 fits with the tooling body 10. Nine pieces are clamped at one time, which are exactly the nine turbine housing segments of the first-stage turbine housing segment. There is no need to align each one, so that the coaxiality and perpendicularity between the tooling body 10 and the outer diameter of the workpiece 20 can be controlled within the tolerance range. The dimensional consistency of the machined workpiece 20 is very good, the repeated clamping and positioning accuracy is high, and the product qualification rate is significantly improved.

[0016] Refer to Figure 3 and Figure 7 , the pressing block 200 is arranged on the tooling body 10 and is connected to the gland 100 through a linkage mechanism 300. The pressing block 200 is used to clamp the workpiece 20 placed on the tooling body 10 along the radial direction of the tooling body 10. Specifically, refer to Figure 4 , there is a certain distance between the pressing block 200 and the engaging part 11 to facilitate the installation and disassembly of the workpiece 20, which can be set according to the actual situation. The pressing block 200 moves radially along the inner side surface 13 of the tooling body 10, and the pressing block 200 is in sliding fit with the inner side surface 13 of the tooling body 10. Specifically, refer to Figure 1 , Figure 2 , Figure 4 and Figure 16 , the vertical cross-section of the pressing block 200 is arc-shaped and matches the rear groove 25. The arc angle of the pressing block 200 is 32° - 38°, so that there is a gap between each pressing block 200, and the pressing block 200 can move radially along the tooling body 10. There are multiple pressing blocks 200. In this embodiment, the number of pressing blocks 200 is 9, which corresponds to the nine turbine housing segments one by one. An elastic rubber pad (not shown in the figure) is also installed on the outer diameter of the pressing block 200 to protect the side wall of the rear groove 25 through the elastic rubber pad (not shown in the figure) of the pressing block 200. The gland 100 can move axially along the tooling body 10. During the process of the gland 100 moving away from the workpiece 20, the linkage mechanism 300 causes the pressing block 200 to move radially inward along the tooling body 10. During the process of the gland 100 moving closer to the workpiece 20, the linkage mechanism 300 causes the pressing block 200 to move radially outward along the tooling body 10, so that the gland 100 and the pressing block 200 contact the workpiece 20 to form a pre-pressing state; The gland 100 can also move circumferentially along the tooling body 10, so that the gland 100 in the pre-pressing state presses the workpiece 20 axially along the tooling body 10 to achieve the final axial pressing, and the pressing block 200 in the pre-pressing state presses the workpiece 20 radially along the tooling body 10 to achieve the final radial pressing.

[0017] Specifically, referring to Figure 4 、 Figure 8 and Figure 16 , the gland 100 pre-presses and finally presses the upper part of the front concave section 21 of the workpiece 20 away from the engaging part 11; the pressing block 200 pre-presses and finally presses the bottom surface of the horizontal part of the rear concave section 23 of the workpiece 20 (i.e., the top surface of the rear groove 25).

[0018] In the present invention, the gland 100 and the pressing block 200 pre-press the workpiece 20 to perform preliminary positioning on the workpiece 20, which can prevent the workpiece 20 from moving before the final pressing. Through two-stage pressing (pre-pressing → final pressing), a progressive load increase is achieved, and the force can be applied more evenly. Only 30%-50% of the final clamping force is required in the pre-pressing stage to complete the positioning. At the final pressing, a greater clamping force is achieved through the mechanical gain of circumferential movement, reducing the risk of deformation or damage to the precision workpiece 20 caused by the instantaneous impact load; The present invention does not need to press and fix the workpiece 20 with screws, making the installation and disassembly of the workpiece 20 more convenient. Compared with the traditional clamping tooling, the clamping efficiency can be increased by 80%, and at the same time, the deformation amount of the workpiece 20 is controlled within the micron level.

[0019] Among them, in this embodiment, when the gland 100 and the pressing block 200 form a pre-pressing state, the gland 100 and the pressing block 200 contact the workpiece 20 simultaneously.

[0020] Specifically, when in the pre-pressing state, the gland 100 and the pressing block 200 contact the workpiece 20 simultaneously, avoiding the workpiece 20 from shifting due to contact with the workpiece 20 in a single direction first, which may cause quality problems of the workpiece 20 in subsequent processing, making this tooling particularly suitable for special-shaped workpieces or thin-walled workpieces.

[0021] Referring to Figure 3 、 Figure 4 and Figure 7, in this embodiment, the linkage mechanism 300 includes a plurality of first moving components 310 and a plurality of second moving components 320; The plurality of first moving components 310 and the plurality of second moving components 320 are arranged inside the tooling body 10, and the plurality of first moving components 310 and the plurality of second moving components 320 are evenly distributed along the circumferential direction of the tooling body 10; Specifically, in this embodiment, the number of the first moving components 310 is 9. Similarly, the number of the second moving components 320 is also 9; the 9 first moving components 310 and the 9 second moving components 320 respectively correspond to 9 turbine housing segments one by one; The first moving component 310 is connected to the gland 100, the second moving component 320 is connected to the pressing block 200, and the first moving component 310 and the second moving component 320 are in abutting cooperation, so that the pressing block 200 is driven to move during the movement of the gland 100.

[0022] Specifically, when the gland 100 drives the first moving component 310 to move axially or circumferentially along the tooling body 10, the first moving component 310 synchronously drives the second moving component 320 to move through abutting cooperation, and then drives the pressing block 200 to move radially along the tooling body 10.

[0023] Refer to Figure 4 , in this embodiment, the first moving component 310 includes a first moving part 311 and a first wedge block 312; The first moving part 311 is connected to the gland 100, the first wedge block 312 is connected to the first moving part 311, and the first moving part 311 is used to limit the movement of the gland 100; Specifically, the movement of the gland 100 includes the axial movement of the gland 100 along the tooling body 10 and the circumferential movement along the tooling body 10; The first wedge block 312 is used to abut and cooperate with the second moving component 320, so that the pressing block 200 is driven to move during the movement of the gland 100.

[0024] Specifically, in this embodiment, one side of the lower part of the first wedge block 312 is inclined.

[0025] Refer to Figure 5 and Figure 8 , in this embodiment, the first moving part 311 includes a first moving groove 3111, a moving block 3112, a pull rod 3113 and a first spring 3114; The first moving groove 3111 is opened inside one side of the tooling body 10 close to the gland 100. A moving block 3112 is slidably fitted in the first moving groove 3111. One end of a pull rod 3113 is connected to the moving block 3112, and the other end of the pull rod 3113 penetrates through the first moving groove 3111 and is connected to the gland 100. A first spring 3114 is sleeved on the outer surface of the pull rod 3113. One end of the first spring 3114 is connected to the moving block 3112, and the other end of the first spring 3114 abuts against the side wall of the first moving groove 3111. Specifically, referring to Figure 11 and Figure 13 , the first moving groove 3111 is arc-shaped, and the arc angle of the first moving groove 3111 is 20° - 30°; the moving block 3112 is also arc-shaped, and the arc angle of the moving block 3112 is 4° - 6°. Referring to Figure 10 and Figure 12 , the first moving grooves 3111 are evenly distributed along the circumferential direction of the tooling body 10, and each first moving groove 3111 is not connected. Referring to Figure 5 , Figure 8 , Figure 11 and Figure 13 , the moving block 3112 can move axially along the tooling body 10 and can also move circumferentially along the tooling body 10 inside the first moving groove 3111. When the moving block 3112 moves circumferentially, the moving block 3112 moves along the side surface of the first moving groove 3111 away from the gland 100; the pull rod 3113 is slidably fitted with the tooling body 10, and the pull rod 3113 can extend out of the first moving groove 3111. When the gland 100 moves (i.e., moves axially along the tooling body 10 or moves circumferentially along the tooling body 10), the moving block 3112 is driven to move synchronously through the pull rod 3113; by the other end of the first spring 3114 abutting against the side wall of the first moving groove 3111, when the gland 100 is stretched or retracted (i.e., the gland 100 moves axially along the tooling body 10), the first spring 3114 is compressed or elongated accordingly, and when the gland 100 rotates (i.e., the gland 100 moves circumferentially along the tooling body 10), the first spring 3114 will not cause movement interference. Wherein, the side surface of the first moving groove 3111 away from the gland 100 is an arc surface with an inclination angle along the axial direction of the tooling body 10. Specifically, when the side of the first moving groove 3111 away from the gland 100 is orthogonally projected onto the axis of the tooling body 10, it is a line segment. This line segment is not perpendicular to the axis of the tooling body 10 and has a certain inclination angle. That is, one end of the side of the first moving groove 3111 away from the gland 100 is close to the outer side surface 12 of the tooling body 10, and the other end of the side of the first moving groove 3111 away from the gland 100 is far from the outer side surface 12 of the tooling body 10; the side of the moving block 3112 away from the gland 100 cooperates with the side of the first moving groove 3111 away from the gland 100; in this embodiment, the arc angle of the side of the first moving groove 3111 away from the gland 100 is 1 - 3°; Refer to Figure 8 and Figure 16 , when the gland 100 rotates, the moving block 3112 is driven by the pull rod 3113 to slide along the side of the first moving groove 3111 away from the gland 100. When the moving block 3112 slides from one end close to the outer side surface 12 towards the end far from the outer side surface 12, the elastic rubber pad (not shown in the figure) of the gland 100 finally presses the upper part of the front concave section 21 away from the engaging portion 11. The deformation of the elastic rubber pad (not shown in the figure) of the gland 100 causes the moving block 3112 to fit with the side of the first moving groove 3111 away from the gland 100. At this time, the first spring 3114 is in a state of restoring deformation or still in a compressed state; when the moving block 3112 slides from the end far from the outer side surface 12 towards the end close to the outer side surface 12, the elastic rubber pad (not shown in the figure) of the gland 100 recovers, causing the gland 100 to return to the pre - pressed state.

[0026] Refer to Figure 8 , the side of the moving block 3112 away from the pull rod 3113 is connected to the first wedge - shaped block 312.

[0027] Specifically, the side of the moving block 3112 away from the pull rod 3113 is connected to the first wedge - shaped block 312 through a connecting rod 3118. Preferably, refer to Figure 8 and Figure 11 , the connecting rod 3118 is located in a communication groove. The communication groove is communicated with the side of the first moving groove 3111 away from the gland 100. The communication groove is arc - shaped, and its arc angle is slightly smaller than the arc angle of the first moving groove 3111 to match the distance between the outer wall of the connecting rod 3118 and the side of the moving block 3112. The communication groove can be reasonably set according to the actual situation.

[0028] Refer to Figure 5 , Figure 11 and Figure 13 , in this embodiment, the first moving part 311 further includes a sliding groove 3115 and a sliding block 3116; The sliding groove 3115 communicates with the first moving groove 3111. The sliding block 3116 is connected to the moving block 3112, and the sliding block 3116 is in sliding fit with the sliding groove 3115 to improve the stability of the movement of the moving block 3112.

[0029] Specifically, the top and bottom of the first moving groove 3111 communicate with the sliding groove 3115. The sliding groove 3115 is provided inside the tooling body 10. The sliding groove 3115 is also arc-shaped, and the side of the sliding groove 3115 away from the gland 100 is also an arc surface with an inclined angle along the axial direction of the tooling body 10, and its inclined angle is the same as the arc angle of the side of the first moving groove 3111 away from the gland 100. The side of the sliding block 3116 away from the gland 100 cooperates with the side of the sliding groove 3115 away from the gland 100. The length dimension of the sliding groove 3115 along the axial direction of the tooling body 10 is smaller than the length dimension of the first moving groove 3111 along the axial direction of the tooling body 10, so that when the gland 100 moves axially away from the tooling body 10, there is space for the first spring 3114 to be compressed in the first moving groove 3111, avoiding excessive stretching of the gland 100 and damaging the first spring 3114. The sliding blocks 3116 are installed at the top and bottom of the moving block 3112. Through the sliding fit between the sliding block 3116 and the sliding groove 3115, the stability of the movement of the moving block 3112 in the first moving groove 3111 is improved when the gland 100 moves axially or circumferentially along the tooling body 10.

[0030] Refer to Figures 9 to 13 , in this embodiment, the clamping tooling further includes a first plugging component 400 and a second plugging component 500; The first plugging component 400 and the second plugging component 500 correspond to one first moving component 310; The first plugging component 400 is used to limit the position of the first moving component 310 when the gland 100 axially presses the workpiece 20 against the tooling body 10, so that the movement of the gland 100 is restricted; The second plugging component 500 is used to limit the position of the first moving component 310 when the gland 100 moves axially away from the workpiece 20 along the tooling body 10, so that the movement of the gland 100 is restricted.

[0031] Specifically, refer to Figure 5 and Figure 11 , there are 9 groups of the first moving components 310. Among them, a slot 3117 is formed on the top surface of the sliding block 3116 at the top of the moving block 3112 of one group of the first moving components 310, that is, only the top surface of one sliding block 3116 is provided with the slot 3117, and the first plugging component 400 and the second plugging component 500 are in plugging fit through the slot 3117; Refer to Figure 5 ,Figure 11 and Figure 16 When the gland 100 is in the final tightened state, the first plugging component 400 is plugged and matched with the slot 3117 of the sliding block 3116 to limit the sliding block 3116, thereby restricting the movement of the gland 100, avoiding the movement of the gland 100 caused by external force or accident, which may lead to the movement of the moving block 3112, resulting in the gland 100 no longer tightly pressing the upper part of the front concave section 21 away from the engaging portion 11, thus causing processing errors. Referring to Figure 9 and Figure 11 As shown in FIGS. and, the first plugging component 400 includes a first communication hole 410 communicating with the sliding groove 3115. The first communication hole 410 penetrates the side surface of the outer diameter of the tooling body 10. A first plug rod 420 is slidably arranged in the first communication hole 410. A first pulling block 430 is installed at one end of the first plug rod 420 extending out of the tooling body 10. The first communication hole 410 communicates with a first guiding groove 440 opened inside the tooling body 10. A first guiding block 450 located in the first guiding groove 440 is installed on the first plug rod 420. A third spring 460 sleeved on the first plug rod 420 is connected between the side wall of the first guiding groove 440 and the first guiding block 450. The first plug rod 420 can be plugged and matched with the slot 3117 opened on the sliding block 3116; preferably, one side of the lower part of the first plug rod 420 is inclined (not shown in the figure). When the gland 100 presses the workpiece 20, one side of the upper part of the sliding block 3116 provided with the slot 3117 is also inclined (not shown in the figure), which is matched with one side of the lower part of the first plug rod 420. When the gland 100 presses the workpiece 20, the sliding block 3116 can push up the first plug rod 420, eliminating the need for manual pulling of the first plug rod 420, which is convenient for operation.

[0032] Referring to Figure 11 and Figure 13 As shown in FIGS. and, when the gland 100 moves axially along the tooling body 10 away from the workpiece 20, the second plugging component 500 is plugged and matched with the slot 3117 of the sliding block 3116 to limit the sliding block 3116, thereby limiting the moving block 3112 and further restricting the movement of the gland 100, avoiding the rebound of the gland 100 under the elastic action of the first spring 3114, which is convenient for the staff to disassemble or install the workpiece 20. Referring to Figure 9 and Figure 13, the second plugging component 500 includes a second communication hole 510 communicating with the sliding groove 3115. The second communication hole 510 penetrates through the side surface of the outer diameter of the tooling body 10. A second plug rod 520 is slidably arranged in the second communication hole 510. One end of the second plug rod 520 extending out of the tooling body 10 is provided with a second pulling block 530. The second communication hole 510 communicates with a second guiding groove 540 opened inside the tooling body 10. A second guiding block 550 located in the second guiding groove 540 is installed on the second plug rod 520. A fourth spring 560 sleeved on the second plug rod 520 is connected between the side wall of the second guiding groove 540 and the second guiding block 550. The second plug rod 520 can be in plugging fit with a slot 3117 opened on one of the sliding blocks 3116; preferably, one side of the lower part of the second plug rod 520 is inclined (not shown in the figure). When the pressing cover 100 moves away from the tooling body 10, one side of the upper part of the sliding block 3116 provided with the slot 3117 is also inclined (not shown in the figure), which is matched with one side of the lower part of the second plug rod 520. When the pressing cover 100 releases the workpiece 20, the sliding block 3116 can push up the second plug rod 520, eliminating the need for manual pulling of the second plug rod 520 and facilitating the operation.

[0033] In this embodiment, both the first plug rod 420 and the second plug rod 520 are in plugging fit with a slot 3117 opened on one of the sliding blocks 3116, and there is only one sliding block 3116 provided with the slot 3117.

[0034] Refer to Figure 4 , in this embodiment, the second moving component 320 includes a second moving part 321 and a second wedge block 322; The second moving part 321 is connected to the pressing block 200, the second wedge block 322 is connected to the second moving part 321. The second moving part 321 is used to limit the movement of the pressing block 200 so that the pressing block 200 slides radially along the inner side surface 13 of the tooling body 10; The second wedge block 322 is used to be in abutting fit with the first wedge block 312 so that the pressing block 200 is driven to move during the movement of the pressing cover 100.

[0035] Specifically, one side of the upper part of the second wedge block 322 is inclined, and it is in abutting fit with the lower inclined surface of the first wedge block 312. Preferably, the first wedge block 312 is arranged away from the inner side surface 13, and the second wedge block 322 is arranged close to the inner side surface 13; the first wedge block 312 is located above the second wedge block 322; the vertical cross-section of the second wedge block 322 is arc-shaped.

[0036] Refer to Figure 4 , Figure 6 , Figure 8 and Figure 15, in this embodiment, the second moving part 321 includes a second moving groove 3211, a fixing plate 3212, a movable rod 3213 and a second spring 3214; The second moving groove 3211 communicates with the first moving groove 3111. The first wedge block 312 is located in the second moving groove 3211. A fixing plate 3212 is installed in the second moving groove 3211. A movable rod 3213 is slidably installed on the fixing plate 3212. One end of the movable rod 3213 is connected to the second wedge block 322. The other end of the movable rod 3213 penetrates through the second moving groove 3211 and is connected to the pressing block 200. A second spring 3214 sleeved on the outer surface of the movable rod 3213 is connected between the second wedge block 322 and the fixing plate 3212.

[0037] Specifically, referring to Figure 4 , Figure 6 , Figure 8 , Figure 15 and Figure 16 , the second moving groove 3211 is divided into upper and lower parts. The vertical cross-section of the upper part of the second moving groove 3211 is arc-shaped, and the upper part of the second moving groove 3211 communicates with the first moving groove 3111 through a communication groove; a part of the first wedge block 312 and the connecting rod 3118 is located in the upper part of the second moving groove 3211; the vertical cross-section of the lower part of the second moving groove 3211 is square-shaped; the movable rod 3213 is L-shaped and is divided into a vertical part and a horizontal part. One end of the vertical part of the movable rod 3213 is connected to the second wedge block 322. The other end of the vertical part of the movable rod 3213 penetrates through the fixing plate 3212 and is connected to one end of the horizontal part of the movable rod 3213. The other end of the horizontal part of the movable rod 3213 penetrates through the lower part of the second moving groove 3211 and is connected to the pressing block 200; the fixing plate 3212, the movable rod 3213 and the second spring 3214 are located in the lower part of the second moving groove 3211; when the pressing block 200 presses the rear concave section 23, the elastic rubber pad (not shown in the figure) of the pressing block 200 deforms so that the pressing block 200 fits against the bottom surface of the horizontal part of the rear concave section 23. At this time, the second spring 3214 is in a state of restoring deformation or still in a compressed state; the second wedge block 322 is located in the upper part of the second moving groove 3211; the second spring 3214 makes the second wedge block 322 always abut and cooperate with the first wedge block 312.

[0038] Referring to Figure 6 , Figure 8 and Figure 15 , in this embodiment, a limiting rod 3121 is connected to the side of the first wedge block 312 close to the moving block 3112, and a limiting groove 3221 capable of slidingly cooperating with the limiting rod 3121 is formed on the second wedge block 322; When the limit rod 3121 is inserted into the limit groove 3221, the pressing block 200 is no longer moved inward in the radial direction of the tooling body 10.

[0039] Specifically, the limit rod 3121 is arranged in a "C" shape; 1-2 limit rods 3121 can be arranged on one first wedge block 3121. In this embodiment, 2 limit rods 3121 are arranged on one first wedge block 3121; a limit groove 3221 with an arc-shaped vertical section is formed on the side of the second wedge block 322 close to the inner side surface 13; when the pressing cover 100 moves away from the tooling body 10, the first wedge block 312 is finally driven to move, so that the limit rod 3121 moves out of the limit groove 3221; when the pressing cover 100 moves close to the tooling body 10, the first wedge block 312 is finally driven to move, so that the limit rod 3121 re-enters the limit groove 3221. At this time, there is still a gap between the inner side surface of the limit groove 3221 and the limit rod 3121, so that when pressing subsequently, the limit rod 3121 can continue to move into the limit groove 3221; when the pressing cover 100 moves circumferentially along the tooling body 10, the limit rod 3121 can slide in the limit groove 3221.

[0040] Refer to Figure 6 , Figure 8 , Figure 15 and Figure 16 , preferably, the upper part of one end of the limit rod 3121 close to the limit groove 3221 is inclined. Correspondingly, the upper part of the limit groove 3221 is also inclined, so that the upper parts of the limit rod 3121 and the limit groove 3221 can be in abutting cooperation. When the pressing cover 100 moves from the pre-pressing state to the final pressing state, the first wedge block 312 moves away from the outer side surface 12, thereby driving the limit rod 3121 to move. The limit rod 3121 lifts the second wedge block 322 upward through the abutting cooperation with the limit groove 3221. Under the elastic action of the second spring 3214, the pressing block 200 can better press the horizontal part of the rear concave section 23. At this time, the elastic rubber pad (not shown in the figure) of the pressing block 200 is deformed; and through the abutting cooperation between the limit rod 3121 and the limit groove 3221, it is avoided that the pressing block 200 loosens due to external force or accident, so that the pressing block 200 cannot press the horizontal part of the rear concave section 23, resulting in processing errors.

[0041] Working principle: When in use, when it is necessary to install the workpiece 20, by pulling the gland 100 to move away from the tooling body 10, the gland 100 drives the pull rod 3113 to move, thereby driving the moving block 3112 and the sliding block 3116 to move, and further driving the connecting rod 3118 and the first wedge block 312 to move. After the gland 100 moves a certain distance, the second plug rod 520 is inserted and matched with the corresponding slot 3117 to prevent the gland 100 from rebounding and resetting. At the same time, the first wedge block 312 moves, so that the limiting rod 3121 is separated from the limiting groove 3221. The first wedge block 312 drives the second wedge block 322 to move radially along the tooling body 10 through abutting cooperation. The second wedge block 322 drives the pressing block 200 to move radially inward along the tooling body 10 through the movable rod 3213. The 9 pressing blocks 200 approach each other, so that it is convenient for the staff to install the front concave section 21 of the workpiece 20 on the engaging part 11 of the tooling body 10. The 9 workpieces 20 can be installed on the engaging part 11 of the tooling body 10 at one time. Then, by pulling the second pull block 530, the second pull block 530 drives the second plug rod 520 to move upward, so that the second plug rod 520 moves out of the slot 3117, so that the gland 100 moves toward the tooling body 10. Release the second pull block 530, and the second plug rod 520 automatically resets under the elastic force of the fourth spring 560. The upper part of the front concave section 21 away from the engaging part 11 is pre-pressed by the gland 100. At the same time, the pressing block 200 resets under the elastic force of the second spring 3214 to pre-press the top surface of the rear groove 25, and the limiting rod 3121 re-enters the limiting groove 3221, so that the gland 100 and the pressing block 200 are in a pre-pressed state. Then, the gland 100 is rotated circumferentially along the tooling body 10, thereby driving the pull rod 3113, the moving block 3112, the sliding block 3116, the connecting rod 3118 and the first wedge block 312 to rotate. When the gland 100 moves from the pre-pressed state to the final pressing state, the elastic rubber pad (not shown in the figure) of the gland 100 presses the upper part of the front concave section 21 away from the engaging part 11. At the same time, the first wedge block 312 moves away from the outer side surface 12, thereby driving the limiting rod 3121 to move. The limiting rod 3121 lifts the second wedge block 322 upward through the abutting cooperation with the limiting groove 3221. And under the elastic action of the second spring 3214, the elastic rubber pad (not shown in the figure) of the pressing block 200 better presses the horizontal part of the rear concave section 23, so that the gland 100 and the pressing block 200 are in the final pressing state, thereby realizing the positioning of the workpiece 20. When the gland 100 presses the workpiece 20, the first plug rod 420 is inserted and matched with the corresponding slot 3117, thereby locking the gland 100 to avoid the gland 100 moving due to external force or accident, thereby causing processing errors.

[0042] When the workpiece 20 needs to be disassembled, by pulling the first pulling block 430, the first pulling block 430 drives the first inserting rod 420 to move upward, so that the first inserting rod 420 moves out of the inserting slot 3117. Then, the gland 100 can be rotated reversely to make the gland 100 return to the pre-compression state. At the same time, the pressing block 200 also returns to the pre-compression state. Then, pull the gland 100 to move away from the tooling body 10 until the second inserting rod 520 is inserted and matched with the corresponding inserting slot 3117. At the same time, the pressing block 200 moves radially inward along the tooling body 10, and the 9 pressing blocks 200 approach each other, so as to facilitate the staff to remove the workpiece 20 from the tooling body 10. Through the above steps, the installation and disassembly of the workpiece 20 can be repeated; In the present invention, the workpiece 20 is pre-compressed by the gland 100 and the pressing block 200, which can prevent the movement of the workpiece 20 before final compression. The progressive load increase is realized through two-stage compression (pre-compression → final compression), reducing the risk of deformation or damage to the precision workpiece 20 caused by the instantaneous impact load. Moreover, there is no need to press and fix the workpiece 20 with screws, making the installation and disassembly of the workpiece 20 more convenient, not only reducing the labor intensity of the staff, but also improving the work efficiency.

[0043] It should be noted that in this article, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0044] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered within the protection scope of the present invention.

Claims

1. A clamping tooling for a fan segment of an aeroengine turbine casing, characterized in that, Comprising: A gland (100), the gland (100) is arranged on the tooling body (10) and is used to clamp the workpiece (20) placed on the tooling body (10) along the axial direction of the tooling body (10); A pressure block (200), the pressure block (200) is arranged on the tooling body (10) and is connected to the gland (100) through a linkage mechanism (300), and the pressure block (200) is used to clamp the workpiece (20) placed on the tooling body (10) along the radial direction of the tooling body (10); The gland (100) can move along the axial direction of the tooling body (10). During the process of the gland (100) moving away from the workpiece (20), the linkage mechanism (300) causes the pressure block (200) to move towards the inside along the radial direction of the tooling body (10). During the process of the gland (100) approaching the workpiece (20), the linkage mechanism (300) causes the pressure block (200) to move towards the outside along the radial direction of the tooling body (10), so that the gland (100) and the pressure block (200) contact the workpiece (20) to form a pre-compression state; The gland (100) can also move along the circumferential direction of the tooling body (10), so that the gland (100) in the pre-compression state compresses the workpiece (20) along the axial direction of the tooling body (10), and the pressure block (200) in the pre-compression state compresses the workpiece (20) along the radial direction of the tooling body (10).

2. The clamping tooling for the fan segment of the turbine housing of an aeroengine according to claim 1, wherein The linkage mechanism (300) includes a plurality of first moving components (310) and a plurality of second moving components (320); A plurality of the first moving components (310) and a plurality of the second moving components (320) are arranged inside the tooling body (10), and a plurality of the first moving components (310) and a plurality of the second moving components (320) are evenly distributed along the circumferential direction of the tooling body (10); The first moving component (310) is connected to the gland (100), the second moving component (320) is connected to the pressure block (200), and the first moving component (310) and the second moving component (320) are in abutting and cooperating connection, so that the pressure block (200) is driven to move during the movement of the gland (100).

3. The clamping tooling for the fan segment of the turbine housing of an aeroengine according to claim 2, characterized in that, The first moving component (310) includes a first moving part (311) and a first wedge block (312); The first moving part (311) is connected to the gland (100), the first wedge block (312) is connected to the first moving part (311), and the first moving part (311) is used to limit the movement of the gland (100); The first wedge block (312) is used to abut and cooperate with the second moving component (320), so that the pressure block (200) is driven to move during the movement of the gland (100).

4. The clamping tooling for the fan segment of the turbine casing of an aero-engine according to claim 3, characterized in that, The first moving part (311) includes a first moving groove (3111), a moving block (3112), a pull rod (3113) and a first spring (3114); The first moving groove (3111) is formed inside one side of the tooling body (10) close to the gland (100). A moving block (3112) is slidably fitted in the first moving groove (3111). One end of a pull rod (3113) is connected to the moving block (3112). The other end of the pull rod (3113) penetrates through the first moving groove (3111) and is connected to the gland (100). A first spring (3114) is sleeved on the outer surface of the pull rod (3113). One end of the first spring (3114) is connected to the moving block (3112), and the other end of the first spring (3114) abuts against the side wall of the first moving groove (3111). Wherein, the side surface of the first moving groove (3111) away from the gland (100) is an arc surface with an inclined angle along the axial direction of the tooling body (10). One side of the moving block (3112) away from the pull rod (3113) is connected to a first wedge block (312).

5. The clamping tooling for the fan segment of the turbine housing of an aeroengine according to claim 4, characterized in that, The first moving part (311) further includes a sliding groove (3115) and a sliding block (3116). The sliding groove (3115) communicates with the first moving groove (3111). The sliding block (3116) is connected to the moving block (3112). The sliding block (3116) is slidably fitted with the sliding groove (3115) to improve the stability of the movement of the moving block (3112).

6. The clamping tooling for the fan segment of the turbine housing of an aeroengine according to claim 5, characterized in that, The clamping tooling further includes a first plug-in component (400) and a second plug-in component (500). The first plug-in component (400) and the second plug-in component (500) correspond to a first moving component (310). The first plug-in component (400) is used to limit the position of the first moving component (310) when the gland (100) presses the workpiece (20) along the axial direction of the tooling body (10), so that the movement of the gland (100) is restricted. The second plug-in component (500) is used to limit the position of the first moving component (310) when the gland (100) moves away from the workpiece (20) along the axial direction of the tooling body (10), so that the movement of the gland (100) is restricted.

7. The clamping tooling for the fan segment of the turbine casing of an aeroengine according to claim 4, characterized in that, The second moving component (320) includes a second moving part (321) and a second wedge block (322). The second moving part (321) is connected to the pressing block (200). The second wedge block (322) is connected to the second moving part (321). The second moving part (321) is used to limit the movement of the pressing block (200). The second wedge block (322) is used to abut and cooperate with the first wedge block (312) so that the pressing block (200) moves when the gland (100) moves.

8. The clamping tooling for the fan segment of the aeroengine turbine housing according to claim 7, wherein The second moving part (321) includes a second moving groove (3211), a fixing plate (3212), a movable rod (3213) and a second spring (3214). The second moving groove (3211) communicates with the first moving groove (3111). The first wedge block (312) is located in the second moving groove (3211). A fixed plate (3212) is installed in the second moving groove (3211). A movable rod (3213) is slidably installed on the fixed plate (3212). One end of the movable rod (3213) is connected to the second wedge block (322), and the other end of the movable rod (3213) penetrates the second moving groove (3211) and is connected to the pressing block (200). A second spring (3214) sleeved on the outer surface of the movable rod (3213) is connected between the second wedge block (322) and the fixed plate (3212).

9. The clamping tooling for the fan segment of the turbine housing of an aeroengine according to claim 8, characterized in that, A limiting rod (3121) is connected to the side of the first wedge block (312) close to the moving block (3112). A limiting groove (3221) capable of slidingly cooperating with the limiting rod (3121) is formed on the second wedge block (322); When the limiting rod (3121) is inserted into the limiting groove (3221), the pressing block (200) no longer moves radially inward along the tooling body (10).

10. The clamping tooling for the fan segment of the turbine casing of an aeroengine according to claim 1, characterized in that, When the pressing cover (100) and the pressing block (200) form a pre-compressed state, the pressing cover (100) and the pressing block (200) are in contact with the workpiece (20) simultaneously.

Images