A multiple concatenation guide vane size detection tool

Abstract

The utility model belongs to detection frock technical field, specifically disclose a kind of multiple orientation vane size detection frock, including basic unit and detection unit, basic unit includes the fixed base for installing the multiple orientation vane to be detected;Detection unit includes passage point detection block and blade body cross section profile sample plate;Passage point detection block is detachably installed in fixed base, and passage point detection block is provided with multiple for the number and position of the passage point of blade corresponding blade;Blade body cross section profile sample plate is detachably installed in fixed base and located above fixed base, and blade body cross section profile sample plate is spaced apart along Y and provided with multiple;The utility model is by setting detachable passage point detection block and blade body cross section profile sample plate, cooperate multidirectional fixed assembly, the efficient, stable detection to multiple orientation vane is realized, solves the problem that traditional detection method is inefficient, cannot realize multipoint synchronous measurement, positioning stability is insufficient.

Description

Technical Field

[0001] This utility model belongs to the field of testing tooling technology, and in particular relates to a multi-unit guide vane size testing tooling. Background Technology

[0002] As a core component of the turbine section of a gas turbine engine, the manufacturing precision of turbine guide vanes directly affects the engine's aerodynamic performance and operating efficiency. Modern aero engines generally use multi-unit guide vanes produced by investment casting. While this structural design improves turbine efficiency, it also introduces more complex testing challenges. Multi-unit guide vanes must withstand exhaust gas temperatures as high as 1600°C, enormous centrifugal loads, and high-temperature corrosive environments during operation, making blade dimensional accuracy a critical factor affecting service life.

[0003] Currently, the inspection of multi-section guide vanes faces three major technical bottlenecks: First, the twisted and variable cross-section of the blade profile makes rapid positioning and inspection difficult, and traditional coordinate measuring machines (CMMs) are inefficient. Second, the complex distribution of channel points in multi-section structures makes it impossible for conventional inspection tools to achieve simultaneous multi-point measurement. Third, the positioning stability of the blades during inspection is insufficient, especially for precision castings with no machining allowance, where existing fixtures are prone to causing measurement deformation. More importantly, when it is necessary to simultaneously inspect the inlet edge, exhaust edge, and blade cross-section, existing technologies often require multiple clamping and changing of different inspection tools, which is not only inefficient but also introduces repeatability errors.

[0004] To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content

[0005] The purpose of this invention is to provide a multi-unit guide vane size inspection fixture, which can effectively improve inspection efficiency, achieve multi-point synchronous measurement, and ensure positioning stability, thereby solving the problems of low inspection efficiency, inaccurate positioning, and large errors in traditional inspection methods.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a multi-unit guide vane size detection fixture, comprising a base unit and a detection unit. The base unit includes a fixed base for mounting the multi-unit guide vane to be detected. The detection unit includes a channel point detection block and a blade cross-sectional profile template. The channel point detection block is detachably mounted on the fixed base, and the channel point detection block is configured with multiple channel points corresponding to the number and position of the blade. The blade cross-sectional profile template is detachably mounted on the fixed base and located above the fixed base, and multiple blade cross-sectional profile templates are spaced apart along the Y direction.

[0007] Furthermore, the fixed base includes a base plate and a positioning plate mounted on the base plate. The detection unit also includes a mounting beam for mounting channel point detection blocks. The channel point detection blocks include an air inlet side detection block and an exhaust side detection block. Multiple mounting slots are provided at both ends of the positioning plate in the Y direction. The multiple air inlet side detection blocks are slidably mounted in the multiple mounting slots one by one. The mounting beam is mounted on the base plate and located above the base plate. There are two mounting beams along the Y direction. Each mounting beam is equipped with multiple exhaust side detection blocks. The multiple exhaust side detection blocks corresponding to each mounting beam are arranged at intervals along the X direction.

[0008] Furthermore, the blade cross-section profile template includes a template body for detecting the blade cross-section profile and a mounting cantilever for mounting the template body. The mounting cantilever is positioned above the substrate. The template body is detachably mounted on the mounting cantilever and located between the mounting cantilever and the substrate. Multiple mounting cantilevers are arranged along the Y direction. Each mounting cantilever is equipped with multiple template bodies, and the multiple template bodies corresponding to each mounting cantilever are arranged in pairs.

[0009] Furthermore, the basic unit also includes an X-axis fixing component, which includes a first fixing post and a fixing clip. The first fixing post is fixedly installed on the base, and the fixing clip is oscillatingly installed on the base to move closer to or away from the first fixing post. The fixing clip and the first fixing post cooperate with each other to clamp and fix the blade to be tested in the X-axis.

[0010] Furthermore, the basic unit also includes a Y-direction fixing component, which includes a second fixing post and a locking rod. The second fixing post is fixedly mounted on the substrate, and the locking rod is mounted on the substrate in a lockable manner that moves along the Y direction. The locking rod cooperates with the second fixing post to clamp and fix the blade to be tested in the Y direction.

[0011] Furthermore, the basic unit also includes a Z-axis fixing component, which includes a support platform and a pressure plate. Multiple support platforms are provided and are distributed on the base plate to support the blade to be tested. The pressure plate can be limited to move in the Z-axis. The pressure plate cooperates with the support platforms to press and fix the blade to be tested in the Z-axis.

[0012] Furthermore, the detection unit also includes a reference block, and the base unit also includes a limiting plate. The intake side detection block includes a slide and a detection head. The slide is an "L"-shaped structure composed of a horizontal section and a vertical section. The horizontal section of the slide is slidably installed in the mounting groove. The detection head is installed on the top of the vertical section of the slide. The limiting plate is installed on the top surface of the positioning plate corresponding to the position of the mounting groove. The limiting plate limits the slide in the sliding direction. The horizontal section of the slide has a reference groove for accommodating the reference block. When the limiting plate is installed, the reference groove and the vertical section of the slide are located on both sides of the limiting plate.

[0013] Furthermore, it also includes mounting columns, mounting beams, and mounting cantilever arms, which are respectively mounted on the base plate via mounting columns.

[0014] Furthermore, the X-direction fixing assembly also includes an adjusting push rod and a tension spring. The bottom surface of the fixing base is provided with a first adjusting seat and a second adjusting seat in sequence from the inside to the outside along the X direction. The bottom of the fixing clip passes through the base plate and is hinged to the first adjusting seat. The adjusting push rod passes through the second adjusting seat and the first adjusting seat in sequence and abuts against the fixing clip. The adjusting push rod is connected to the first adjusting seat and / or the second adjusting seat by a threaded engagement. The adjusting push rod can be driven to rotate and apply a thrust along the X direction to the fixing clip, so that the fixing clip swings and moves closer to the first fixing post. The two ends of the elastic force of the tension spring are respectively connected to the fixing clip and the first adjusting seat. The direction of the elastic force of the tension spring is opposite to the direction of the thrust of the adjusting push rod. The fixing clip is pulled away from the first fixing post by the elastic force of the tension spring.

[0015] Furthermore, there are at least two second fixing posts arranged along the X direction, and the locking rod is located between the two second fixing posts.

[0016] The beneficial effects of this technical solution are as follows:

[0017] This utility model discloses a multi-unit guide vane size detection fixture. The fixture, by setting a detachable channel point detection block and a blade cross-section template, and in conjunction with a multi-directional fixing component, achieves efficient and stable detection of multi-unit guide vanes. It solves the problems of low efficiency, inability to achieve multi-point synchronous measurement, and insufficient positioning stability of traditional detection methods. It has the advantages of improving detection efficiency, achieving multi-point synchronous measurement, and ensuring positioning stability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a multi-unit guide vane size detection fixture according to the present invention;

[0019] Figure 2 This is a top view of the structure of a multi-unit guide vane size detection fixture according to the present invention;

[0020] Figure 3 This is a structural schematic diagram of the fixed base of this utility model;

[0021] Figure 4 This is a front view of the structure of the fixed base of this utility model;

[0022] Figure 5 This is a schematic diagram of the blade cross-sectional profile template of this utility model;

[0023] Figure 6 This is the main structural view of the blade cross-section template of this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the air intake side detection block of this utility model;

[0025] Figure 8 This is a schematic diagram of the structure of the reference block of this utility model;

[0026] Figure 9 This is a schematic diagram of the assembly structure of the exhaust edge detection block of this utility model;

[0027] Figure 10 This is a front view of the assembly structure of the exhaust edge detection block of this utility model. Detailed Implementation

[0028] The following detailed description illustrates the specific implementation method:

[0029] The reference numerals in the accompanying drawings include: base plate 1, positioning plate 2, air inlet side detection block 3, horizontal section 301, vertical section 302, detection head 303, reference groove 304, exhaust side detection block 4, reference block 5, locking rod 6, mounting beam 7, blade cross-section template 8, mounting cantilever 801, template body 802, mounting column 9, multi-unit guide vane 10, pressure plate 11, limiting plate 12, locking platform 13, connecting rod 14, adjusting push rod 15, mounting groove 16, first fixed column 17, second fixed column 18, support base 19, fixing clip 20, first adjusting seat 21, second adjusting seat 22, tension spring 23.

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] The basic implementation examples are as follows: Figure 1-10As shown: A multi-unit guide vane dimensional inspection fixture includes a base unit and an inspection unit. The base unit includes a fixed base for mounting the multi-unit guide vane 10 to be inspected. The inspection unit includes channel point detection blocks and blade cross-sectional profile templates 8. The channel point detection blocks are detachably mounted on the fixed base, and multiple channel point detection blocks are set according to the number and position of channel points corresponding to the blade. The blade cross-sectional profile templates 8 are detachably mounted on the fixed base and located above the fixed base, and multiple blade cross-sectional profile templates 8 are spaced apart along the Y direction. The modular design achieves efficient dimensional inspection of the multi-unit guide vane 10. The fixed base provides a stable installation reference for the blade, the channel point detection blocks can quickly locate key dimensions of the blade flow channel surface, and the blade cross-sectional profile templates 8 can simultaneously inspect the cross-sectional profile errors of multiple blades. Compared with the traditional method of inspecting each blade individually, this solution significantly improves inspection efficiency and achieves adaptability inspection for blades of different specifications through the detachable structural design. During the inspection process, the blade can complete the comprehensive inspection of channel points and cross-sectional profiles in a single clamping, avoiding repeated positioning errors.

[0032] In this embodiment, the fixed base includes a base plate 1 and a positioning plate 2 mounted on the base plate 1. The detection unit also includes a mounting beam 7 for mounting channel point detection blocks. The channel point detection blocks include an air inlet side detection block 3 and an exhaust side detection block 4. Multiple mounting slots 16 are provided at both ends of the positioning plate 2 in the Y direction. The multiple air inlet side detection blocks 3 are slidably mounted in the multiple mounting slots 16 respectively. The mounting beam 7 is mounted on the base plate 1 and located above the base plate 1. There are two mounting beams 7 along the Y direction. Each mounting beam 7 is equipped with multiple exhaust side detection blocks 4. The multiple exhaust side detection blocks 4 corresponding to each mounting beam 7 are arranged at intervals along the X direction. As shown in the figure, multiple mounting slots 16 are respectively opened at both ends of the positioning plate 2 in the Y direction, and an air intake side detection block 3 is installed in each mounting slot 16 to detect whether the dimensions of the channel points on the large and small mounting sides of the multi-unit guide vane 10 meet the requirements. The mounting slots 16 are mainly used to install the air intake side detection blocks 3, and the sliding installation method is used to facilitate the fixing of the multi-unit guide vane 10 before testing, so as to avoid the air intake side detection blocks 3 affecting the installation of the vane. Thus, by setting the sliding air intake side detection block 3 and the adjustable exhaust side detection block 4, the simultaneous detection of the channel points on the air intake and exhaust sides of the multi-unit guide vane 10 is realized. Compared with the single detection method, this scheme significantly improves the detection efficiency while ensuring the detection accuracy, and solves the technical problem of low detection efficiency of the channel points of the multi-unit guide vane 10.

[0033] In this embodiment, the blade cross-section profile template 8 includes a template body 802 for detecting the blade cross-section profile and a mounting cantilever 801 for mounting the template body 802. The mounting cantilever 801 is disposed above the substrate 1. The template body 802 is detachably mounted on the mounting cantilever 801 and located between the mounting cantilever 801 and the substrate 1. Multiple mounting cantilever 801s are arranged along the Y direction. Each mounting cantilever 801 is equipped with multiple template bodies 802s, and the multiple template bodies 802s corresponding to each mounting cantilever 801 are arranged in pairs. Specifically, the template body 802 is an arc shape conforming to the cross-sectional profile of the standard blade. Multiple template bodies 802 are paired up to clamp each blade of the multi-unit guide blade 10 to monitor the cross-sectional profile of the corresponding blade. The specific number of template bodies 802 is determined according to the number of units of the multi-unit guide blade 10. Two template bodies 802 are set for each unit of blades. This is a setup that those skilled in the art can understand and will not be elaborated here. Through the modular design of the template bodies 802, synchronous detection of the cross-sectional profiles of the multi-unit blades is achieved. The conformal contact between the arc-shaped template body 802 and the blade profile avoids measurement errors, and the pairwise clamping method ensures detection stability. The Y-axis multi-position arrangement of the mounting cantilever 801 allows a single fixture to adapt to the detection requirements of different numbers of blades, and the detachable feature of the template body 802 facilitates quick replacement of detection modules according to changes in blade shape. Compared with traditional single detection templates, this structure significantly improves the detection efficiency and consistency of the cross-sectional profiles of multi-unit blades.

[0034] In this embodiment, the base unit further includes an X-axis fixing component, which includes a first fixing post 17 and a fixing clamp 20. The first fixing post 17 is fixedly installed on the base, and the fixing clamp 20 is oscillatingly installed on the base to move closer to or further away from the first fixing post 17. The fixing clamp 20 and the first fixing post 17 cooperate to clamp and fix the blade to be inspected in the X-axis. Specifically, the X-axis fixing component forms a clamping structure through the first fixing post 17 and the oscillating fixing clamp 20. The first fixing post 17 can be vertically fixed to the base by bolts or welding. The fixing clamp 20 achieves its oscillating function through a hinge or pivot. The adjustable X-axis clamping mechanism effectively solves the problem of positioning and fixing the multi-unit guide blade 10 in the X-axis. The design of the oscillating fixing clamp 20 allows for the rapid clamping of blades of different thicknesses while maintaining a stable clamping force. Compared with the traditional rigid fixing method, this structure can ensure accurate positioning of the blade during the inspection process and adapt to dimensional differences caused by the casting tolerances of the blade. In practical applications, this component can be used in conjunction with fixing mechanisms in other directions to achieve comprehensive positioning of the blades, thereby improving detection accuracy and work efficiency.

[0035] In this embodiment, the basic unit further includes a Y-axis fixing component, which includes a second fixing post 18 and a locking rod 6. The second fixing post 18 is fixedly installed on the base plate 1, and the locking rod 6 is installed on the base plate 1 in a lockable manner that allows movement along the Y direction. The locking rod 6 cooperates with the second fixing post to clamp and fix the blade to be tested in the Y direction. In this embodiment, the locking rod 6 is a threaded rod, and the base plate 1 is correspondingly provided with a locking platform 13 with a threaded hole. The locking rod 6 is installed on the locking platform 13 by a threaded connection. The locking rod 6 can be rotated to achieve translation in the Y direction, thereby cooperating with the second fixing post 18 to clamp the blade. Specifically, the locking rod 6 adopts a threaded rod structure, and achieves Y-axis clamping by converting rotational motion into linear motion. The locking platform 13 and the base plate 1 can be integrally cast or connected by separate bolts. As a preferred embodiment, a rubber buffer pad can be provided at the end of the locking rod 6 to prevent excessive clamping force from damaging the blade surface. Furthermore, a knob handle can be installed at the head of the locking rod 6 for easy operation. The threaded mechanical locking mechanism achieves precise positioning and reliable fixation of the blades in the Y direction. Compared to the traditional manual clamping plate structure, the threaded locking mechanism offers advantages such as ease of operation and quantifiable control of clamping force. Specifically, the self-locking characteristic of the threaded pair prevents loosening during the inspection process, ensuring measurement stability; the clamping displacement can be precisely controlled by the rotation angle, avoiding blade deformation caused by over-positioning; and the use of standardized threaded parts reduces manufacturing and maintenance costs. This design effectively solves the problem of insufficient positioning accuracy of multi-unit blades in the Y direction, providing a stable benchmark for subsequent profile inspection.

[0036] In this embodiment, the base unit further includes a Z-axis fixing component, which includes a support platform 19 and a pressure plate 11. Multiple support platforms 19 are provided and distributed on the base plate 1 to support the blade to be tested. The pressure plate 11 can be limited to move in the Z-axis, and the pressure plate 11 cooperates with the support platforms 19 to press and fix the blade to be tested in the Z-axis. In this embodiment, the pressure plate 11 is mounted on the base plate 1 via a threaded connecting rod 14. The connecting rod 14 can be driven to rotate, thereby moving the pressure plate 11 in the Z-axis and thus pressing and fixing the blade. Specifically, the Z-axis fixing component achieves vertical fixing of the blade through the cooperation of the support platforms 19 and the pressure plate 11. The number and arrangement of the support platforms 19 can be adjusted according to the size and shape of the blade to ensure uniform support for the blade. The pressure plate 11 moves up and down via the threaded connecting rod 14. This design allows for precise control of the pressure force of the pressure plate 11, avoiding excessive pressure on the blade. The rotation of the connecting rod 14 can be driven manually or with a power tool, making operation simple and stable. As a preferred embodiment, the connecting rod 14 can be equipped with scale markings for more precise control of the movement distance of the pressure plate 11. Furthermore, the bottom surface of the pressure plate 11 can be made of a flexible material to reduce damage to the blade surface. Thus, this technical solution, through the cooperation of the support base 19 and the pressure plate 11, achieves stable fixing of the blade in the Z-direction, solving the problem of vertical displacement that may occur during the inspection of the multi-unit guide blade 10. Compared with existing technologies, this solution has the advantages of simple operation, stable fixing, and minimal damage to the blade. The design of the threaded connecting rod 14 allows for precise control of the clamping force of the pressure plate 11, preventing blade deformation or damage due to excessive pressure. Simultaneously, the distributed arrangement of the support base 19 can accommodate blades of different shapes and sizes, improving the versatility and applicability of the tooling.

[0037] In this embodiment, the detection unit further includes a reference block 5, the base unit further includes a limit plate 12, and the inlet edge detection block 3 includes a sliding seat and a detection head 303. The sliding seat has an "L" - shaped structure composed of a horizontal section 301 and a vertical section 302. The horizontal section 301 of the sliding seat is slidably installed in the installation groove 16, and the detection head 303 is installed at the top of the vertical section 302 of the sliding seat. The limit plate 12 is installed on the top surface of the positioning plate 2 corresponding to the position of the installation groove 16, and the limit plate 12 limits the sliding seat in the sliding direction of the sliding seat. A reference groove 304 for accommodating the reference block 5 is provided on the horizontal section 301 of the sliding seat. In the installed state of the limit plate 12, the reference groove 304 and the vertical section 302 of the sliding seat are located on both sides of the limit plate 12 respectively. In this embodiment, there are two limit plates 12, and the two limit plates 12 are respectively installed at both ends of the positioning plate 2 in the Y - direction. Any limit plate 12 synchronously limits the multiple sliding seats on the same side in their respective corresponding installation grooves 16. Specifically, the reference block 5 can be made of a high - precision metal block. The reference block 5 cooperates with the inlet edge detection block 3 to detect the inlet edge channel points. During use, slide the sliding seat to make the detection head 303 fit to the corresponding channel point position, and then insert the standard block into the reference groove 304. If the reference block 5 can be smoothly inserted and can fit to the side wall of the limit plate 12, it is qualified. Thus, this technical solution realizes the precise positioning and calibration of the sliding seat through the cooperation between the reference block 5 and the reference groove 304, and combines with the synchronous limiting function of the limit plate 12 for multiple sliding seats, effectively solving the problems of positioning accuracy and accuracy during the detection of the inlet edge channel points of the multi - unit guide vane 10. Among them, the reference block 5, as the assembly reference, can ensure the consistency of the initial positions of all sliding seats, and the limit plate 12 ensures that there is no Z - direction displacement deviation of the sliding seat during the detection process. Compared with the conventional separately - adjusted detection structure, this design significantly improves the positioning efficiency and repeated accuracy during batch detection, and is especially suitable for the detection scenario of multi - unit blades with multiple identical channel point structures.

[0038] In this embodiment, the system also includes mounting columns 9, with mounting beams 7 and mounting cantilever 801 respectively mounted on the base plate 1 via the mounting columns 9. The mounting columns 9 are rigid support structures, which can be cylindrical or square metal rods, and their bottoms are connected to the base plate 1 by bolts or welding. The height of the mounting columns 9 is designed according to the spatial layout requirements of the detection unit, and the positioning plate 2 also has corresponding slots for positioning the mounting columns 9. By setting dedicated mounting columns 9, precise positioning of each component of the detection unit in three-dimensional space is achieved. As an independent support structure, the mounting columns 9 avoid structural interference problems that may occur if the mounting beams 7 and mounting cantilever 801 are directly fixed to the base plate 1, while also improving the overall structural rigidity. Specifically, the mounting columns 9 stably support the mounting beams 7 at a predetermined height above the base plate 1, ensuring precise alignment between the exhaust side detection block 4 and the exhaust side of the blade; the mounting cantilever 801 extends above the blade area via the columns, allowing the template body 802 to accurately cover the blade cross-section detection position. Therefore, this structure solves the technical problem of complex spatial layout and high positioning accuracy requirements of multiple detection components when inspecting multi-unit guide vanes 10, and improves the assembly efficiency and inspection repeatability of the tooling through modular installation.

[0039] In this embodiment, the X-direction fixing assembly further includes an adjusting push rod 15 and a tension spring 23. The bottom surface of the fixing base is provided with a first adjusting seat 21 and a second adjusting seat 22 in sequence from the inside to the outside along the X direction. The bottom of the fixing clamp 20 passes through the base plate 1 and is hinged to the first adjusting seat 21. The adjusting push rod 15 passes through the second adjusting seat 22 and the first adjusting seat 21 in sequence and abuts against the fixing clamp 20. The adjusting push rod 15 is connected to the first adjusting seat 21 and / or the second adjusting seat 22 by a threaded engagement. The adjusting push rod 15 can be driven to rotate and apply a pushing force along the X direction to the fixing clamp 20, so that the fixing clamp 20 swings and moves closer to the first fixing post 17. The two ends of the elastic force of the tension spring 23 are respectively connected to the fixing clamp 20 and the first adjusting seat 21. The direction of the elastic force of the tension spring 23 is opposite to the direction of the pushing force of the adjusting push rod 15. The fixing clamp 20 is pulled away from the first fixing post 17 by the elastic force of the tension spring 23. In this embodiment, the X-axis fixing component is positioned near the center of the substrate 1 to clamp and fix the section of multi-unit guide vanes located at the center. Alternatively, the X-axis fixing component can be positioned at other designated locations on the substrate 1 to clamp and fix the section of multi-unit guide vanes located at corresponding positions. Specifically, the adjusting push rod 15 adopts a threaded rod structure. By rotating the adjusting push rod 15, the displacement of the fixing clamp 20 can be precisely controlled, thereby achieving fine adjustment of the clamping force. The first adjusting seat 21 and the second adjusting seat 22 can be metal blocks with threaded holes, which are welded or bolted to the bottom surface of the substrate 1, respectively. The hinge structure at the bottom of the fixing clamp 20 can adopt a pin connection, allowing the clamp to swing freely within a certain angle range. The tension spring 23 is preferably a cylindrical helical compression spring, one end of which is connected to the fixing clamp 20 via a hook, and the other end is fixed to the first adjusting seat 21. Thus, this technical solution achieves precise control and rapid adjustment of the X-axis clamping force of the vanes through the synergistic action of the adjusting push rod 15 and the tension spring 23. The threaded drive mechanism ensures the stability of the clamping force, while the spring return mechanism provides reliable safety redundancy. Compared with the traditional method of relying solely on threaded locking, this design significantly improves the convenience and reliability of clamping operations, making it particularly suitable for production scenarios requiring frequent clamping of blades of different specifications. By setting the X-axis fixing component in a specific position, precise positioning can be achieved based on the structural characteristics of multi-blade assembly, effectively solving the problem of fixing complex blade-shaped workpieces during the inspection process.

[0040] In this embodiment, at least two second fixing posts 18 are arranged along the X-direction, and the locking rod 6 is positioned between the two second fixing posts 18. Specifically, the second fixing posts 18 are arranged along the X-direction to form a double clamping reference point, and the double-post structure enhances the positioning stability of the blade. The locking rod 6 adopts a threaded drive structure, achieving Y-direction displacement through rotational drive, and cooperates with the second fixing posts 18 to form a three-point clamping system. Through the symmetrical arrangement of the second fixing posts 18 and the synergistic effect of the central locking rod 6, the technical problem of easy deflection when positioning multi-unit blades in the Y-direction is effectively solved. The three-point fixing structure can offset the torque generated by single-sided clamping, and the threaded locking mechanism can achieve micron-level feed accuracy. Compared with the single-post clamping scheme, the three-point clamping system makes the blade more uniformly stressed, avoiding measurement errors caused by clamping deformation during the detection process.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A fixture for detecting the dimensions of multi-unit guide vanes, characterized in that, include: The basic unit includes a mounting base for mounting the multi-unit guide vane to be tested; The detection unit includes a channel point detection block and a blade cross-section profile template; The channel point detection block is detachably installed on the fixed base, and the channel point detection block is configured with multiple channel points corresponding to the blade; the blade cross-sectional profile template is detachably installed on the fixed base and located above the fixed base, and multiple blade cross-sectional profile templates are spaced apart along the Y direction.

2. The multi-unit guide vane size detection fixture according to claim 1, characterized in that: The fixed base includes a base plate and a positioning plate mounted on the base plate. The detection unit also includes a mounting beam for mounting channel point detection blocks. The channel point detection blocks include an air intake side detection block and an exhaust side detection block. Multiple mounting slots are provided at both ends of the positioning plate in the Y direction. The multiple air intake side detection blocks are slidably mounted in the multiple mounting slots one by one. The mounting beam is mounted on the base plate and located above the base plate. There are two mounting beams along the Y direction. Each mounting beam is equipped with multiple exhaust side detection blocks. The multiple exhaust side detection blocks corresponding to each mounting beam are arranged at intervals along the X direction.

3. The multi-unit guide vane size detection fixture according to claim 2, characterized in that: The blade cross-sectional profile template includes a template body for detecting the blade cross-sectional profile and a mounting cantilever for mounting the template body. The mounting cantilever is disposed above the substrate. The template body is detachably mounted on the mounting cantilever and located between the mounting cantilever and the substrate. Multiple mounting cantilevers are arranged along the Y direction. Each mounting cantilever is equipped with multiple template bodies, and the multiple template bodies corresponding to each mounting cantilever are arranged in pairs.

4. The multi-unit guide vane size detection fixture according to claim 2, characterized in that: The basic unit also includes an X-axis fixing component, which includes a first fixing post and a fixing clip. The first fixing post is fixedly installed on the base, and the fixing clip is oscillatingly installed on the base to move closer to or away from the first fixing post. The fixing clip and the first fixing post cooperate with each other to clamp and fix the blade to be tested in the X-axis.

5. The multi-unit guide vane size detection fixture according to claim 2, characterized in that: The basic unit also includes a Y-direction fixing component, which includes a second fixing post and a locking rod. The second fixing post is fixedly installed on the substrate, and the locking rod is installed on the substrate in a lockable manner that moves along the Y direction. The locking rod cooperates with the second fixing post to clamp and fix the blade to be tested in the Y direction.

6. The multi-unit guide vane size detection fixture according to claim 2, characterized in that: The basic unit also includes a Z-axis fixing component, which includes a support platform and a pressure plate. Multiple support platforms are provided and are distributed on the base plate to support the blade to be tested. The pressure plate can be limited to move in the Z-axis. The pressure plate cooperates with the support platform to press and fix the blade to be tested in the Z-axis.

7. The multi-unit guide vane size detection fixture according to claim 2, characterized in that: The detection unit further includes a reference block, and the base unit further includes a limiting plate. The air intake side detection block includes a slide and a detection head. The slide is an "L"-shaped structure composed of a horizontal section and a vertical section. The horizontal section of the slide is slidably installed in the mounting groove. The detection head is installed on the top of the vertical section of the slide. The limiting plate is installed on the top surface of the positioning plate corresponding to the position of the mounting groove. The limiting plate limits the slide in the sliding direction. The horizontal section of the slide has a reference groove for accommodating the reference block. In the installed state of the limiting plate, the reference groove and the vertical section of the slide are located on both sides of the limiting plate.

8. The multi-unit guide vane size detection fixture according to claim 3, characterized in that: It also includes mounting columns, and the mounting beam and mounting cantilever are respectively mounted on the base plate through the mounting columns.

9. The multi-unit guide vane size detection fixture according to claim 4, characterized in that: The X-direction fixing assembly further includes an adjusting push rod and a tension spring. The bottom surface of the fixing base is provided with a first adjusting seat and a second adjusting seat sequentially from the inside to the outside along the X-direction. The bottom of the fixing clamp passes through the base plate and is hinged to the first adjusting seat. The adjusting push rod passes through the second adjusting seat and the first adjusting seat sequentially and abuts against the fixing clamp. The adjusting push rod is connected to the first adjusting seat and / or the second adjusting seat by a threaded connection. The adjusting push rod can be driven to rotate and apply a thrust along the X-direction to the fixing clamp, causing the fixing clamp to swing and move closer to the first fixing post. The two ends of the tension spring's elastic force are respectively connected to the fixing clamp and the first adjusting seat. The direction of the tension spring's elastic force is opposite to the direction of the adjusting push rod's thrust. The fixing clamp is pulled away from the first fixing post by the elastic force of the tension spring.

10. The multi-unit guide vane size detection fixture according to claim 5, characterized in that: The second fixing post is at least two arranged along the X direction, and the locking rod is located between the two second fixing posts.

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