A clamping tool for the fan section of an aeroengine turbine housing

Abstract

The present invention relates to the technical field of manufacturing parts of aero-engines, and discloses a clamping tool for a fan segment of a turbine housing of an aero-engine, including: a gland and a pressing block. The gland can move axially along the tool body. During the process of the gland moving away from the workpiece, the linkage mechanism causes the pressing block to move radially inward along the tool body. During the process of the gland moving close to the workpiece, the linkage mechanism causes the pressing block to move radially outward along the tool body, so that the gland and the pressing block contact the workpiece to form a pre-compression state. The gland can also move circumferentially along the tool body, so that the gland in the pre-compression state presses the workpiece axially along the tool body, and the pressing block in the pre-compression state presses the workpiece radially along the tool body. The present invention does not need to press and fix the parts by screws, making the installation and disassembly of the parts more convenient, not only reducing the labor intensity of the staff, but also improving the work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of manufacturing parts of aero-engines, and particularly relates 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 an 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 containment, and is a typical thin-walled structural part.

[0003] The parts at the end of the turbine housing of an 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 an incomplete ring-shaped part. When the inner arc surface of the turbine housing fan segment is worn, it needs to be repaired by laser surfacing on the inner arc surface, and after repair, it also needs to be finely machined on the inner arc surface.

[0004] During fine 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, the screws need to be removed first before the turbine housing fan segment can be taken off, which reduces the work 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:

[0007] A clamping tool for a fan segment of a turbine housing of an aero-engine, comprising:

[0008] A gland, the gland 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;

[0009] A pressing block, the pressing block is arranged on the tool body and is connected with the gland through a linkage mechanism, and the pressing block is used to clamp the workpiece placed on the tool body along the radial direction of the tool body;

[0010] 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 closer 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-pressed state;

[0011] The gland can also move circumferentially along the tooling body, so that the gland in the pre-compressed state presses the workpiece axially along the tooling body, and the pressing block in the pre-compressed state presses the workpiece radially along the tooling body.

[0012] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0013] In the present invention, by moving the gland axially along the tooling body, when the gland moves away from the tooling body, the gland makes the pressing block move radially inward along 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 radially outward along the tooling body through the linkage mechanism, so that the pressing block pre-presses the other end of the workpiece. Then, rotate the gland circumferentially along the tooling body. During the rotation, make the gland in the pre-compressed state press the workpiece axially along the tooling body, and at the same time, the gland makes the pressing block in the pre-compressed state press the workpiece radially along the tooling body through the linkage mechanism, so as to realize the positioning of the workpiece. In the present invention, the workpiece is pre-pressed by 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. Moreover, 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. Description of the Drawings

[0014] 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 the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 is an axonometric view of a clamping tooling disclosed in some embodiments of the present application;

[0016] Figure 2 is an axonometric view of the clamping tooling with the gland hidden disclosed in some embodiments of the present application;

[0017] Figure 3 is a schematic cross-sectional structure view of the clamping tooling disclosed in some embodiments of the present application;

[0018] Figure 4 is Figure 3 an enlarged structure view of part A in

[0019] Figure 5 isFigure 4 Schematic enlarged view of the structure at B in [specific context];

[0020] Figure 6 is Figure 4 Schematic enlarged view of the structure at C in [specific context];

[0021] Figure 7 Isometric sectional view of the clamping tooling disclosed in some embodiments of the present application;

[0022] Figure 8 is Figure 7 Schematic enlarged view of the structure at D in [specific context];

[0023] Figure 9 Isometric view of the tooling body disclosed in some embodiments of the present application;

[0024] Figure 10 Isometric sectional view of the first section of the tooling body disclosed in some embodiments of the present application;

[0025] Figure 11 is Figure 10 Schematic enlarged view of the structure at E in [specific context];

[0026] Figure 12 Isometric sectional view of the second section of the tooling body disclosed in some embodiments of the present application;

[0027] Figure 13 is Figure 12 Schematic enlarged view of the structure at F in [specific context];

[0028] Figure 14 Isometric sectional view of the third section of the tooling body disclosed in some embodiments of the present application;

[0029] Figure 15 is Figure 14 Schematic enlarged view of the structure at G in [specific context];

[0030] Figure 16 Schematic view of the workpiece structure disclosed in some embodiments of the present application;

[0031] Figure 17 Schematic view of the structure of multiple workpieces disclosed in some embodiments of the present application.

[0032] In the figure:

[0033] 100 - gland;

[0034] 200 - pressing block;

[0035] 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 - Insertion slot; 3118 - Link; 312 - First wedge block; 3121 - Limit rod; 320 - Second moving component; 321 - Second moving part; 3211 - Second moving groove; 3212 - Fixed plate; 3213 - Moving rod; 3214 - Second spring; 322 - Second wedge block; 3221 - Limit groove;

[0036] 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;

[0037] 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;

[0038] 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

[0039] 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 the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0040] The terms "first", "second", "third", "fourth", etc. in the specification 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 do not limit the number of objects. For example, the first object can be one or several. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0041] In the actual use process, the inventor found that the previous clamping tooling clamped both ends of the fan section of the turbine housing with 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 one 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 ensured 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 compress both ends of the fan section of the turbine housing. Two screws are required for each end of each fan section of the turbine housing for compression and fixation. 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. The single-directional contact with one end of the fan section of the turbine housing first is likely to cause the workpiece to shift, resulting in quality problems of the workpiece in subsequent processing.

[0042] The following combines the attached Figures 1 to 17 to elaborate in detail on a clamping tooling for the fan section of an aero-engine turbine housing provided by the present application through specific embodiments and their application scenarios.

[0043] Refer to Figures 1 to 4 、 Figure 7 and Figure 8 A clamping tooling for the fan section of an aero-engine turbine housing includes: a gland 100 and a pressing block 200;

[0044] The gland 100 is arranged on the tooling body 10 and is used for clamping the workpiece 20 placed on the tooling body 10 along the axial direction of the tooling body 10;

[0045] Specifically, refer to Figure 1 The gland 100 is in an annular shape;

[0046] Refer 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 for installing the workpiece 20; the tooling body 10 is in an annular shape; an annular engaging portion 11 is provided inside the tooling body 10, and the axial cross-section of the engaging portion 11 is in an L shape; the side surface of the end of the tooling body 10 far from the shaft of the machine tool is an 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 an inner side surface 13, and the inner side surface 13 slidably cooperates with the pressing block 200;

[0047] Refer toFigures 1 to 4 , Figure 7 , Figure 8 , Figure 16 and Figure 17 , the workpiece 20 is a fan-shaped segment of a turbine housing. The arc angle of the workpiece 20 is 39.9°. It includes three parts. One end is a front concave segment 21, the middle is a straight segment 22, and the other end is a rear concave segment 23. It is arranged in an arc shape as a whole; the inner arc surface of the straight segment 22 is the surface to be precision turned; the axial section of the front concave segment 21 is L-shaped. There is a front groove 24 formed between the front concave segment 21 and the straight segment 22. The front groove 24 matches the engaging portion 11, so that the front concave segment 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 segment 21 away from the engaging portion 11 extends out of the outer side surface 12 of the tooling body 10, and the upper part of the side of the front concave segment 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 segment 21 away from the engaging portion 11 matches the gland 100; the axial section of the rear concave segment 23 is L-shaped. There is a rear groove 25 formed on the side of the rear concave segment 23 away from the front concave segment 21; the rear groove 25 matches the pressing block 200. The rear concave segment 23 has a horizontal part and a vertical part. The vertical part of the rear concave segment 23 is connected to the straight segment 22, and the horizontal part of the rear concave segment 23 is connected to the top of the vertical part of the rear concave segment 23;

[0048] The inventor found in the actual use process that traditionally, 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 side of the front concave segment 21 away from the engaging portion 11 is protected by the elastic rubber pad (not shown in the figure) of the gland 100;

[0049] Referring to Figure 3 , Figure 4 , Figure 7 and Figure 8 , the tooling body 10 makes use of the outer circle of the workpiece 20 matching the inner diameter size 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 is exactly the nine fan-shaped segments of the first-stage turbine housing. There is no need to align each one, so that the coaxiality and perpendicularity between the tooling body 10 and the outer circle 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.

[0050] Referring 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;

[0051] Specifically, referring to Figure 4 , there is a certain distance between the pressing block 200 and the engaging portion 11, which is convenient for the installation and disassembly of the workpiece 20 and 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;

[0052] Specifically, referring to Figure 1 , Figure 2 , Figure 4 and Figure 16 , the vertical section of the pressing block 200 is arc-shaped, which 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 9 turbine housing fan 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, and the side wall of the rear groove 25 is protected by the elastic rubber pad (not shown in the figure) of the pressing block 200;

[0053] The pressing cover 100 can move axially along the tooling body 10. During the process of the pressing cover 100 moving away from the workpiece 20, the linkage mechanism 300 makes the pressing block 200 move radially inward along the tooling body 10. During the process of the pressing cover 100 moving close to the workpiece 20, the linkage mechanism 300 makes the pressing block 200 move radially outward along the tooling body 10, so that the pressing cover 100 and the pressing block 200 contact the workpiece 20 to form a pre-compression state;

[0054] The pressing cover 100 can also move circumferentially along the tooling body 10, so that the pressing cover 100 in the pre-compression state axially presses the workpiece 20 along the tooling body 10 to achieve the final axial compression, and the pressing block 200 in the pre-compression state radially presses the workpiece 20 along the tooling body 10 to achieve the final radial compression.

[0055] Specifically, referring to Figure 4 , Figure 8 and Figure 16 , the pressing cover 100 pre-compresses and finally compresses the upper part of the front concave section 21 of the workpiece 20 away from the engaging portion 11; the pressing block 200 pre-compresses and finally compresses 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).

[0056] In the present invention, the workpiece 20 is preliminarily clamped and positioned by the gland 100 and the pressing block 200, which can prevent the movement of the workpiece 20 before final clamping. Progressive load increase is achieved through two-stage clamping (preliminary clamping → final clamping), and the force can be applied more evenly. Only 30%-50% of the final clamping force is required in the preliminary clamping stage to complete the positioning. A greater clamping force is achieved through the mechanical gain of circumferential movement during final clamping, reducing the risk of deformation or damage to the precision workpiece 20 caused by instantaneous impact loads;

[0057] In the present invention, there is no need to clamp 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 of the workpiece 20 is controlled within the micron level.

[0058] Wherein, in this embodiment, when the gland 100 and the pressing block 200 form a preliminary clamping state, the gland 100 and the pressing block 200 are in contact with the workpiece 20 simultaneously.

[0059] Specifically, when in the preliminary clamping state, the gland 100 and the pressing block 200 are in contact with the workpiece 20 simultaneously, avoiding the offset of the workpiece 20 caused by the contact with the workpiece 20 in a single direction first, which may lead to quality problems of the workpiece 20 in subsequent processing. Therefore, this tooling is particularly suitable for special-shaped workpieces or thin-walled parts.

[0060] Refer 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;

[0061] The plurality of first moving components 310 and the plurality of second moving components 320 are arranged in 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 circumference of the tooling body 10;

[0062] 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;

[0063] 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 to drive the pressing block 200 to move when the gland 100 moves.

[0064] 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, thereby driving the pressing block 200 to move radially along the tooling body 10.

[0065] Referring to Figure 4 , in this embodiment, the first moving component 310 includes a first moving part 311 and a first wedge block 312;

[0066] 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;

[0067] 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;

[0068] 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.

[0069] Specifically, in this embodiment, one side of the lower part of the first wedge block 312 is inclined.

[0070] Referring 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;

[0071] 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. 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;

[0072] 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°;

[0073] 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;

[0074] Refer to Figure 5 , Figure 8 , Figure 11 and Figure 13 , the moving block 3112 is within the first moving groove 3111 and can move along the axial direction of the tooling body 10 or along the circumferential direction of the tooling body 10. 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 in sliding fit 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 along the axial direction of the tooling body 10 or along the circumferential direction of the tooling body 10), the moving block 3112 is driven to move synchronously through the pull rod 3113; the other end of the first spring 3114 abuts against the side wall of the first moving groove 3111, so that when the gland 100 is stretched or retracted (i.e., the gland 100 moves along the axial direction of 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 along the circumferential direction of the tooling body 10), the first spring 3114 will not cause movement interference;

[0075] Among them, 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;

[0076] Specifically, when the side surface of the first moving groove 3111 away from the gland 100 is orthographically projected onto the axis of the tooling body 10, it is a line segment, and this line segment is not perpendicular to the axial direction of the tooling body 10 and has a certain inclination angle, that is, one end of the side surface 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 surface 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 surface of the moving block 3112 away from the gland 100 cooperates with the side surface of the first moving groove 3111 away from the gland 100; in this embodiment, the arc angle of the side surface of the first moving groove 3111 away from the gland 100 is 1 - 3°;

[0077] 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 first moving groove 3111 away from the side surface of the gland 100. When the moving block 3112 slides from one end close to the outer side surface 12 towards the end away from the outer side surface 12, the elastic rubber pad (not shown in the figure) of the gland 100 finally compresses the upper part of the front concave section 21 away from the engaging part 11. The deformation of the elastic rubber pad (not shown in the figure) of the gland 100 makes the moving block 3112 fit with the side surface 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 away 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, and the gland 100 returns to the pre-compressed state.

[0078] Referring to Figure 8 , the side of the moving block 3112 away from the pull rod 3113 is connected to the first wedge block 312.

[0079] Specifically, the side of the moving block 3112 away from the pull rod 3113 is connected to the first wedge block 312 through a connecting rod 3118. Preferably, referring to Figure 8 and Figure 11 , the connecting rod 3118 is located in a communicating groove. The communicating groove is communicated with the side surface of the first moving groove 3111 away from the gland 100. The communicating 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 communicating groove can be reasonably set according to the actual situation.

[0080] Referring 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;

[0081] The sliding groove 3115 is communicated with the first moving groove 3111. The sliding block 3116 is connected to the moving block 3112. The sliding block 3116 is slidably matched with the sliding groove 3115 to improve the stability of the movement of the moving block 3112.

[0082] Specifically, the top and bottom of the first moving groove 3111 communicate with sliding grooves 3115; the sliding grooves 3115 are formed inside the tooling body 10; the sliding grooves 3115 are also arc-shaped, and the side of the sliding groove 3115 away from the gland 100 is also an arc surface with an inclination angle along the axial direction of the tooling body 10, and its inclination 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 is matched 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, the first moving groove 3111 has a space when the first spring 3114 is compressed, avoiding excessive stretching of the gland 100 and causing damage to the first spring 3114; the top and bottom of the moving block 3112 are installed with sliding blocks 3116; through the sliding fit of the sliding blocks 3116 and the sliding grooves 3115, when the gland 100 moves axially or circumferentially along the tooling body 10, the stability of the moving block 3112 moving in the first moving groove 3111 is improved.

[0083] Referring to Figures 9 to 13 , in this embodiment, the clamping tooling further includes a first plug-in component 400 and a second plug-in component 500;

[0084] The first plug-in component 400 and the second plug-in component 500 correspond to one first moving component 310;

[0085] The first plug-in 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;

[0086] The second plug-in 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.

[0087] Specifically, referring to Figure 5 and Figure 11 , there are 9 groups of first moving components 310. The top surface of the sliding block 3116 on the top of the moving block 3112 of one group of first moving components 310 is provided with a slot 3117, that is, only the top surface of one sliding block 3116 is provided with a slot 3117, and the slot 3117 is in plug-in fit with the first plug-in component 400 and the second plug-in component 500;

[0088] Referring to Figure 5 , Figure 11 and Figure 16, when the gland 100 is in the final compressed 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 compressing the upper part of the front concave section 21 away from the engaging part 11, thus causing processing errors;

[0089] Referring to Figure 9 and Figure 11 , 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 compresses 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, so that when the gland 100 compresses 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.

[0090] Referring to Figure 11 and Figure 13 , 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;

[0091] Referring to Figure 9 and Figure 13The second plug-in assembly 500 includes a second connecting hole 510 connected to the sliding groove 3115. The second connecting hole 510 passes through the side of the outer diameter of the tooling body 10. A second plug rod 520 is slidably provided in the second connecting hole 510. A second pull block 530 is installed on one end of the second plug rod 520 extending out of the tooling body 10. The second connecting hole 510 is connected to a second guide groove 540 opened inside the tooling body 10. A second guide block 550 located in the second guide groove 540 is installed on the second plug rod 520. A sleeve provided on the second plug rod is connected between the side wall of the second guide groove 540 and the second guide block 550. The fourth spring 560 on 520, the second insertion rod 520 can be plugged into the slot 3117 provided on one of the sliding blocks 3116; preferably, the lower side of the second insertion rod 520 is tilted (not shown in the figure), and when the pressure cover 100 moves in the direction away from the tooling body 10, the upper side of the sliding block 3116 with the slot 3117 is also tilted (not shown in the figure), and cooperates with the lower side of the second insertion rod 520, so that when the pressure cover 100 releases the workpiece 20, the sliding block 3116 can lift the second insertion rod 520, and there is no need to manually pull up the second insertion rod 520, which is convenient for operation.

[0092] In this embodiment, the first inserting rod 420 and the second inserting rod 520 are both plugged into and matched with the slot 3117 defined on one of the sliding blocks 3116 , and there is only one sliding block 3116 with the slot 3117 defined thereon.

[0093] Reference Figure 4 In this embodiment, the second moving assembly 320 includes a second moving portion 321 and a second wedge block 322;

[0094] The second movable portion 321 is connected to the pressing block 200 , and the second wedge block 322 is connected to the second movable portion 321 . The second movable portion 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 tool body 10 .

[0095] The second wedge block 322 is used to abut and cooperate with the first wedge block 312 so that the pressing block 200 is driven to move when the pressing cover 100 moves.

[0096] Specifically, one side of the upper portion of the second wedge block 322 is tilted, and is in abutment with the lower inclined surface of the first wedge block 312. Preferably, the first wedge block 312 is disposed away from the inner side surface 13, and the second wedge block 322 is disposed close to the inner side surface 13; the first wedge block 312 is located above the second wedge block 322; and the vertical cross-section of the second wedge block 322 is arc-shaped.

[0097] Reference 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;

[0098] 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.

[0099] 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 deformation of the elastic rubber pad (not shown in the figure) of the pressing block 200 makes the pressing block 200 fit with 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.

[0100] 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;

[0101] 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.

[0102] 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 3121 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 3121 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 along the circumferential direction of the tooling body 10, the limit rod 3121 can slide in the limit groove 3221.

[0103] 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 fit. When the pressing cover 100 moves from the pre-pressing state to the final pressing state, the first wedge block 3121 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 fit 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 fit 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, resulting in the pressing block 200 being unable to press the horizontal part of the rear concave section 23, thus causing processing errors.

[0104] 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 into and cooperates with the corresponding slot 3117 to prevent the gland 100 from rebounding and resetting. At the same time, as the first wedge block 312 moves, 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. 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, thereby causing the gland 100 to move toward the tooling body 10. When the second pull block 530 is released, the second plug rod 520 automatically resets under the elastic force of the fourth spring 560. The upper part of the side of the front concave section 21 away from the engaging part 11 is pre-compressed by the gland 100. At the same time, the pressing block 200 resets under the elastic force of the second spring 3214 to pre-compress 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-compressed 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-compressed state to the final compression process, the elastic rubber pad (not shown in the figure) of the gland 100 compresses the upper part of the side 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 compresses the horizontal part of the rear concave section 23, so that the gland 100 and the pressing block 200 are in the final compression state, thereby realizing the positioning of the workpiece 20. When the gland 100 compresses the workpiece 20, the first plug rod 420 is inserted into and cooperates with the corresponding slot 3117, thereby locking the gland 100 to avoid the gland 100 moving due to external force or accident, thus causing processing errors.

[0105] When the workpiece 20 needs to be disassembled, by pulling the first pulling block 430, the first pulling block 430 drives the first insertion rod 420 to move upward, so that the first insertion rod 420 moves out of the slot 3117. Then, the gland 100 can be rotated reversely, so that the gland 100 returns to the pre-tightening state. At the same time, the pressing block 200 also returns to the pre-tightening state. Then, pull the gland 100 to move away from the tooling body 10 until the second insertion rod 520 is inserted and matched with the corresponding 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;

[0106] In the present invention, the workpiece 20 is pre-tightened by the gland 100 and the pressing block 200, which can prevent the movement of the workpiece 20 before final tightening. The progressive load increase is realized through two-stage tightening (pre-tightening → final tightening), reducing the risk of deformation or damage of the precision workpiece 20 caused by the instantaneous impact load. Moreover, there is no need to tighten 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.

[0107] 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 the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0108] The above is only the specific implementation manner 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 all 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 for clamping a 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 for clamping 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); 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 cooperation, so that the pressure block (200) is driven to move during the movement of the gland (100); 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 for limiting the movement of the gland (100); The first wedge block (312) is used for abutting and cooperating with the second moving component (320), so that the pressure block (200) is driven to move during the movement of the gland (100).

2. The clamping tooling for the fan segment of the aero-engine turbine casing according to claim 1, 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). Among them, the side 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). One side of the moving block (3112) away from the pull rod (3113) is connected to a first wedge block (312).

3. The clamping tooling for the fan segment of the turbine housing of an aeroengine according to claim 2, wherein 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 in the sliding groove (3115) to improve the moving stability of the moving block (3112).

4. The clamping tooling for the fan segment of the aero-engine turbine housing according to claim 3, characterized in that, 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) 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 plugging 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.

5. The clamping tooling for the fan segment of the turbine casing of an aeroengine according to claim 2, 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.

6. The clamping tooling for the fan segment of the turbine housing of an aeroengine according to claim 5, characterized in that 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).

7. The clamping tooling for the fan segment of the turbine casing of an aeroengine according to claim 6, 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 in 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).

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

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