Blade clamping device

Abstract

The utility model discloses a blade clamping device, and relates to the field of vapor deposition, and the clamping device comprises a tool main body, a clamping block assembly, a sliding locking part and an elastic piece; a first sliding groove and a second sliding groove are formed in the tool body, the blade is installed in the clamping block assembly, the clamping block assembly is installed in an installation groove of the tool body, when the clamping block assembly is installed, the clamping block assembly is pressed into the installation groove towards the elastic piece, and in the process, the sliding locking part slides in the first sliding groove; after the sliding locking part is pressed into the range of the second sliding groove, the clamping block assembly and the sliding locking part are circumferentially rotated by a certain angle, and then the clamping block assembly and the elastic piece are loosened, so that the sliding locking part is pressed on the inner wall of the sliding groove, and the stability of the clamping block assembly and the sliding locking part in the machining process is guaranteed; by means of the installation mode that the sliding locking part is pressed in and then rotated and staggered, the loading and unloading efficiency can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of vapor deposition, and in particular to a blade clamping device. Background Art

[0002] In the manufacture and maintenance of aircraft engines, the processing of turbine blades often requires the use of electron beam physical vapor deposition (EB-PVD). The blades need to be mounted by a clamping device in the high temperature and high vacuum environment generated by the vapor deposition equipment for processing.

[0003] The problems with existing clamping devices are: 1. Low loading and unloading efficiency; 2. Inability to match different turbine blade shapes or sizes, resulting in inability to firmly clamp the turbine blades; 3. The threaded parts of the clamping device are exposed to the environment and are easily plated. Utility Model Content

[0004] The embodiment of the present application provides a blade clamping device, which can solve the problem of low loading and unloading efficiency.

[0005] The present application provides a blade clamping device, comprising:

[0006] The tooling body is provided with a mounting groove; the tooling body is provided with a slide groove, the slide groove includes a first slide groove and a second slide groove which are connected to each other, the first slide groove is provided at the opening end surface of the mounting groove, and the second slide groove is provided at the inner peripheral wall of the mounting groove; the first slide groove is provided along the depth direction of the mounting groove, and the second slide groove is provided along the circumference direction of the mounting groove;

[0007] A clamping block assembly connected to the tenon of the blade;

[0008] A sliding locking part, one end of which is connected to the clamping block assembly, and the other end of which is slidably disposed in the sliding groove;

[0009] An elastic member is arranged in the installation groove, one end of the elastic member is connected to the inner wall of the installation groove, and the other end is connected to the clamping block assembly, and is used to press the sliding locking part onto the inner wall of the slide groove;

[0010] The slide groove also includes a third slide groove, which is connected to the second slide groove; in the depth direction of the installation groove, the third slide groove is arranged in a direction away from the elastic member; in the circumferential direction of the installation groove, the width D1 of the sliding locking portion is 0.9 to 0.7 times the width D2 of the third slide groove.

[0011] The blade clamping device of the present application has at least the following beneficial effects:

[0012] The blade in the present application is installed in the clamping block assembly, and the clamping block assembly is installed in the mounting groove of the tooling body. When the clamping block assembly is installed, the clamping block assembly is pressed into the mounting groove toward the elastic member. During this process, the sliding locking part slides in the first sliding groove. After the sliding locking part slides and is pressed into the range of the second sliding groove, the clamping block assembly and the sliding locking part are rotated circumferentially by a certain angle, and then the clamping block assembly is released, and the elastic member presses the sliding locking part against the inner wall of the sliding groove to ensure the stability of the clamping block assembly and the sliding locking part during the processing. The installation method of the present application in which the sliding locking part is pressed in and then rotated and dislocated can effectively improve the loading and unloading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0014] Figure 1 is a structural diagram of the blade clamping device of the present application;

[0015] Figure 2 This is a structural diagram of the blade clamping device of the present application from another angle;

[0016] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0017] Figure 4 is a vertical cross-sectional view of the blade clamping device of the present application (the clamping block assembly is hidden);

[0018] Figure 5 is a side view of the blade clamping device of the present application;

[0019] Figure 6 yes Figure 5 AA view in;

[0020] Figure 7 is an exploded schematic diagram of the clamp block assembly and the blade in the present application;

[0021] Figure 8 is a vertical cross-sectional view of the clamp block assembly and the blade in the present application;

[0022] Description of the reference numerals is as follows:

[0023] 100, tooling body; 100a, mounting groove; 100b, first slide groove; 100c, second slide groove; 100d, third slide groove; 110, first cylinder; 120, second cylinder;

[0024] 200, clamping block assembly; 210, threaded fastener; 211, first threaded fastener; 212, second threaded fastener; 220A1, first clamping block; 220B1, second clamping block; 220A2, third clamping block; 220B2, fourth clamping block; 200a, clamping groove;

[0025] 300, sliding locking portion;

[0026] 400, elastic parts;

[0027] 500, blade; 510, tenon. DETAILED DESCRIPTION

[0028] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] like Figure 1 As shown, this embodiment discloses a blade clamping device, including a tooling body 100, a clamping block assembly 200, a sliding locking portion 300 and an elastic member 400, as follows:

[0031] like Figure 2 and Figure 3As shown, the tool body 100 is provided with a mounting groove 100a, and the mounting groove 100a is used to accommodate the clamping block assembly 200 and the tenon 510 of the blade 500; the tool body 100 is provided with a slide groove, and the slide groove includes a first slide groove 100b and a second slide groove 100c, the first slide groove 100b is arranged on the opening end surface of the mounting groove 100a, and the second slide groove 100c is arranged on the inner peripheral wall of the mounting groove 100a, wherein the setting direction (that is, the length direction) of the first slide groove 100b is the depth direction of the mounting groove 100a, and the first slide groove 100 b extends from the open end surface of the mounting groove 100a to the inner bottom surface of the mounting groove 100a; the setting direction (i.e., the length direction) of the second slide groove 100c is configured as the circumferential direction of the mounting groove 100a, the first slide groove 100b and the second slide groove 100c are connected to each other, and the sliding locking portion 300 is slidably set in the slide groove. Specifically: when the clamping block assembly 200 is installed, the sliding locking portion 300 slides downward from the first slide groove 100b and rotates into the second slide groove 100c, and then the sliding locking portion 300 is pressed against the inner wall of the slide groove through the elastic member 400.

[0032] like Figure 3 As shown, in some preferred embodiments, the slide groove also includes a third slide groove 100d, and the setting direction (i.e., the length direction) of the third slide groove 100d is configured as the depth direction of the mounting groove 100a. Specifically, in the depth direction of the mounting groove, the third slide groove 100d extends upward in a direction away from the inner bottom surface of the mounting groove 100a, and the third slide groove 100d is connected to the second slide groove 100c.

[0033] From the above, we can see that there are two forms of chutes, as described below:

[0034] The first type is that the slide groove includes a first slide groove 100b and a second slide groove 100c. When the clamping block assembly 200 needs to be installed in the installation groove 100a, the sliding locking portion 300 connected to the clamping block assembly 200 is pressed into the first slide groove 100b along the depth direction of the installation groove 100a, and the clamping block assembly 200 and the sliding locking portion 300 are pressed toward the inner bottom surface of the installation groove 100a (at this time, the elastic member 400 at the bottom is gradually compressed), so that the sliding locking portion 300 is moved from the first slide groove 100b to the second slide groove 100c. The slide groove 100b enters into the range of the second slide groove 100c, and then the clamping block assembly 200 and the sliding locking part 300 are rotated circumferentially, so that the sliding locking part 300 is circumferentially misaligned with the first slide groove 100b, and then the force of the clamping block assembly 200 is withdrawn, and the elastic force of the elastic member 400 lifts the clamping block assembly 200 and the sliding locking part 300. Due to the limitation of the second slide groove 100c, the sliding locking part 300 is pressed against the inner top wall of the second slide groove 100c by the elastic member 400.

[0035] The second method (this embodiment illustrates this method) is as follows: Figure 4As shown, the slide groove includes a first slide groove 100b, a second slide groove 100c and a third slide groove 100d. When the clamping block assembly 200 needs to be installed in the installation groove 100a, the sliding locking portion 300 connected to the clamping block assembly 200 is pressed into the first slide groove 100b along the depth direction of the installation groove 100a, and the clamping block assembly 200 and the sliding locking portion 300 are pressed toward the inner bottom surface of the installation groove 100a together (at this time, the elastic member 400 at the bottom is gradually compressed), so that the sliding locking portion 300 is moved from the first slide groove 100b to the third slide groove 100d. 0b enters into the range of the second slide groove 100c, and then continues to rotate the sliding locking part 300 circumferentially, so that the sliding locking part 300 corresponds to the third slide groove 100d (corresponding in the depth direction of the installation groove 100a), at this time, the force of the clamping block assembly 200 is withdrawn, and the elastic force of the elastic member 400 lifts the clamping block assembly 200 and the sliding locking part 300. Since the sliding locking part 300 corresponds to the third slide groove 100d, the sliding locking part 300 is pressed against the inner top wall of the third slide groove 100d by the elastic member 400.

[0036] It can be seen from the above that no matter the form of the slide groove is the first form or the second form, both are feasible methods, but the second form can more stably restrict the sliding locking part 300 during the processing process, and is a more preferred method.

[0037] like Figure 5 and Figure 6 As shown, in the second form of the above-mentioned slide groove, it is preferred that: in the circumferential direction of the installation groove 100a, the width D1 of the sliding locking portion 300 is 0.9 to 0.7 times the width D2 of the third slide groove 100d, and it is further preferred that D1 is 0.8 times D2. By designing the size relationship between D1 and D2, on the one hand, the sliding locking portion 300 can be smoothly pressed into the third slide groove 100d under the elastic force of the elastic member 400, and on the other hand, the third slide groove 100d can better limit the circumferential rotation of the sliding locking portion 300 to ensure the stability of the clamping block assembly 200.

[0038] like Figure 5 and Figure 6 As shown, in this embodiment, the tooling body 100 includes a first cylinder 110 and a second cylinder 120, and the outer diameter of the first cylinder 110 is 3 to 8 times the outer diameter of the second cylinder 120. The first axial end face of the first cylinder 110 is provided with a mounting groove 100a, the depth direction of the mounting groove 100a is configured as the axial direction of the first cylinder 110, the cross-sectional shape of the mounting groove 100a is circular, and the mounting groove 100a is coaxially arranged with the first cylinder 110; one end of the second cylinder 120 is coaxially fixedly connected with the second axial end face of the first cylinder 110. The second cylinder 120 can be connected to an external deposition device so that the clamping device of this embodiment is installed in the deposition device.

[0039] It should be noted that the first axial end face of the first cylinder 110 is the opening end face of the mounting groove 100a, and the first sliding groove 100b is connected to the mounting groove 100a.

[0040] like Figure 2 As shown, in this embodiment, preferably, at least two slide grooves are provided on the tool body 100, specifically: at least two slide grooves are provided on the first cylinder 110 (two slide grooves are shown in this embodiment), and the sliding locking parts 300 are provided in a one-to-one correspondence with the slide grooves. By providing multiple slide grooves and multiple sliding locking parts 300 to cooperate with each other, the stability of the clamping block assembly 200 after installation can be further increased.

[0041] like Figure 4 As shown, the elastic member 400 in this embodiment is arranged on the inner bottom surface of the mounting groove 100a, one end of the elastic member 400 is connected to the inner bottom surface of the mounting groove 100a, and the other end of the elastic member 400 is connected to the clamping block assembly 200. The elastic member 400 is configured to be in the depth direction of the mounting groove 100a, that is, the axial direction of the first cylinder 110 ( Figure 4 The symbol M in the figure indicates the axial direction of the first cylinder). The elastic member 400 can press the sliding locking portion 300 connected to the clamping block assembly 200 against the inner wall of the slide groove, so that the clamping block assembly 200 can be stably installed in the installation groove 100a.

[0042] like Figure 4 As shown, in some preferred embodiments, the elastic member 400 is configured as a spring, one end of the spring is connected to the inner bottom surface of the mounting groove 100a, and the other end of the elastic member 400 is used to abut against the clamping block assembly 200. The spring is used for adaptive positioning of the blade 500. The spring is made of ceramic and can maintain good mechanical properties under high temperature and high vacuum. Compared with traditional technology, the ceramic spring has excellent high temperature resistance, corrosion resistance, and thermal vibration resistance, can adaptively rebound and lock, and has high loading and unloading efficiency.

[0043] like Figure 6 and Figure 7As shown, the clamping block assembly 200 is arranged in the installation groove 100a, and the clamping block assembly 200 is connected to the tenon 510 of the blade 500, so as to realize the installation and positioning of the blade 500. In this embodiment, the clamping block assembly 200 includes a threaded fastener 210 and a plurality of clamping blocks, and the plurality of clamping blocks are enclosed to form a clamping groove 200a, and the threaded fastener 210 is connected to the clamping block, and the threaded fastener 210 connects the plurality of clamping blocks to form a whole; wherein, the tenon 510 of the blade 500 is arranged in the clamping groove 200a, and the sliding locking portion 300 is arranged on the clamping block, specifically: the plurality of clamping blocks are enclosed along the circumferential direction of the installation groove 100a, so as to form a clamping groove 200a for clamping the tenon 510, and the threaded fastener 210 can connect the plurality of clamping blocks to form a whole that will not be scattered, so as to ensure the clamping and installation of the tenon 510 by the plurality of clamping blocks. One end of the sliding locking portion 300 is fixedly connected to the clamping block or the sliding locking portion 300 and the clamping block are integrally formed, and the other end of the sliding locking portion 300 extends into the sliding groove along the radial direction of the installation groove 100a.

[0044] like Figure 7 As shown, in this embodiment, a clamping groove 200a is formed by enclosing a plurality of clamping blocks, and the inner wall surface of the clamping groove 200a acts as a clamping surface and clamps the outer peripheral side of the tenon 510. Clamping blocks of different shapes and specifications can be replaced according to actual conditions, so that the clamping device of this embodiment is suitable for clamping and installing tenons 510 of different shapes and specifications.

[0045] like Figure 7 As shown, in some preferred embodiments, the multiple clamps of the clamp assembly 200 are respectively configured as a first clamp 220A1, a second clamp 220B1, a third clamp 220A2 and a fourth clamp 220B2; along the circumference of the mounting groove 100a, the first clamp 220A1, the second clamp 220B1, the third clamp 220A2 and the fourth clamp 220B2 are arranged in sequence, and the inner side surfaces of the first clamp 220A1, the second clamp 220B1, the third clamp 220A2 and the fourth clamp 220B2 (that is, a surface facing the axis of the mounting groove 100a) enclose the clamping groove 200a. In this embodiment, the four clamping blocks have four inner side surfaces, and the four inner side surfaces serve as clamping surfaces to clamp the outer side surfaces of the tenon 510. It should be noted that even if the shape of the tenon 510 is irregular, as long as the inner side surfaces of two clamping blocks can contact the outer sides of the tenon 510, the tenon 510 can be clamped.

[0046] like Figure 7As shown, the first clamp block 220A1 and the third clamp block 220A2 have the same shape and size, and the second clamp block 220B1 and the fourth clamp block 220B2 have the same shape and size. The sliding locking portion 300 of this embodiment is disposed on the first clamp block 220A1 or the third clamp block 220A2, and since there are preferably two sliding locking portions 300 in this embodiment, one sliding locking portion 300 is disposed on the first clamp block 220A1, and the other sliding locking portion 300 is disposed on the third clamp block 220A2.

[0047] like Figure 7 As shown, the threaded fastener 210 includes a first threaded fastener 211 and a second threaded fastener 212. The first threaded fastener 211 passes through the first clamp block 220A1, the second clamp block 220B1 and the third clamp block 220A2 in sequence, and the first threaded fastener 211 connects the first clamp block 220A1, the second clamp block 220B1 and the third clamp block 220A2 to form a whole. The second threaded fastener 212 passes through the first clamp block 220A1, the fourth clamp block 220B2 and the third clamp block 220A2 in sequence, and the second threaded fastener 212 connects the first clamp block 220A1, the fourth clamp block 220B2 and the third clamp block 220A2 to form a whole.

[0048] In this embodiment, the first threaded fastener 211 and the second threaded fastener 212 are both installed in the installation groove 100a together with the clamping block, and most of the structures of the two threaded fasteners 210 are penetrated in multiple clamping blocks, which can effectively prevent the threads from being plated.

[0049] like Figure 8 As shown, in some preferred embodiments, the cross-sectional shape of the clamping groove 200a matches the cross-sectional shape of the tenon 510, specifically: along the depth direction of the installation groove 100a, the inner circumferential cross-sectional shape of the clamping groove 200a matches the outer circumferential cross-sectional shape of the tenon 510, and further, the inner circumferential surface of the clamping groove 200a is in close contact with the outer circumferential surface of the tenon 510. By selecting a clamping block that matches the shape of the tenon 510, the inner side surface of the clamping block can match and contact the outer circumferential surface of the tenon 510, so as to further improve the stability of the blade 500 during processing.

[0050] In some preferred embodiments, the tooling body 100 and all the clamping blocks are made of carbon-based composite materials so that they have the characteristics of strong resistance to heat deformation at high temperatures and light weight, which can ensure the positioning accuracy of the blade 500 and improve the uniformity of the coating thickness. Among them, the hardness of the clamping block is lower than that of the tenon 510, which can protect the tenon 510 from being scratched and damaged.

[0051] One installation method of the blade clamping device of this embodiment is as follows:

[0052] 1. Before opening the furnace, a plurality of clamping blocks are clamped around the tenon 510 by means of threaded fasteners 210;

[0053] Second, first install the elastic member 400 into the installation groove 100a of the tool body 100;

[0054] 3. Install the whole formed by connecting multiple clamps and tenons 510 into the installation groove 100a. Before installation, it is necessary to align the sliding locking part 300 on the clamp block with the first slide groove 100b on the tooling body 100, and then press the clamp block assembly 200 together with the tenon 510 into the installation groove 100a along the depth direction of the installation groove 100a (at this time, the elastic member 400 is compressed by the clamp block assembly 200), and at the same time, the sliding locking part 300 enters the range of the second slide groove 100c along the first slide groove 100b, and then rotate the clamp block assembly 20 in the circumferential direction. 0 and the sliding locking part 300, the sliding locking part 300 rotates along the second slide groove 100c to correspond to the third slide groove 100d, and then the clamping block assembly 200 is released. Under the elastic force of the elastic member 400, the sliding locking part 300 is driven by the elastic member 400 to be pressed into the third slide groove 100d, and the sliding locking part 300 is pressed on the inner top wall of the third slide groove 100d, and the sliding locking part 300 and the clamping block assembly 200 are restricted from rotating by the third slide groove 100d. At this time, the clamping block assembly 200 and the tenon 510 are installed;

[0055] 4. After the processing of the blade 500 is completed, a force is first applied to the clamping block assembly 200 toward the bottom surface of the installation groove 100a, so that the elastic member 400 is compressed, and at the same time, the sliding locking portion 300 slides out of the third slide groove 100d and enters the range of the second slide groove 100c, and then the clamping block assembly 200 is rotated to make the sliding locking portion 300 rotate along the second slide groove 100c to correspond to the first slide groove 100b, and then the clamping block assembly 200 is released. Under the elastic force of the elastic member 400, the sliding locking portion 300 is driven by the elastic member 400 to slide out of the first slide groove 100b. At this time, the clamping block assembly 200 and the tenon 510 of the blade 500 can be freely removed from the tooling body 100.

[0056] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A blade clamping device, characterized in that: include: A tooling body (100) is provided with a mounting groove (100a); a slide groove is provided on the tooling body (100), the slide groove comprising a first slide groove (100b) and a second slide groove (100c) which are connected to each other, the first slide groove (100b) being provided at an opening end surface of the mounting groove (100a), and the second slide groove (100c) being provided at an inner peripheral wall of the mounting groove (100a); the first slide groove (100b) being provided along a depth direction of the mounting groove (100a), and the second slide groove (100c) being provided along a circumferential direction of the mounting groove (100a); A clamping block assembly (200) connected to the tenon (510) of the blade (500); A sliding locking portion (300), one end of the sliding locking portion (300) being connected to the clamping block assembly (200), and the other end of the sliding locking portion (300) being slidably disposed in the sliding groove; An elastic member (400) is disposed in the installation groove (100a), one end of the elastic member (400) is connected to the inner wall of the installation groove (100a), and the other end is connected to the clamping block assembly (200), and is used to press the sliding locking portion (300) against the inner wall of the slide groove; The slide groove further comprises a third slide groove (100d), the third slide groove (100d) being connected to the second slide groove (100c); in the depth direction of the installation groove (100a), the third slide groove (100d) is arranged in a direction away from the elastic member (400); in the circumferential direction of the installation groove (100a), a width D1 of the sliding locking portion (300) is 0.9 to 0.7 times a width D2 of the third slide groove (100d).

2. The blade clamping device according to claim 1, characterized in that: The tool body (100) comprises a first cylinder (110) and a second cylinder (120); one end surface of the first cylinder (110) is provided with the mounting groove (100a) along its axial direction; one end of the second cylinder (120) is connected to the other end surface of the first cylinder (110).

3. The blade clamping device according to claim 1 or 2, characterized in that: At least two of the slide grooves are provided on the tool body (100); and the sliding locking portions (300) are provided in a one-to-one correspondence with the slide grooves.

4. The blade clamping device according to claim 1, characterized in that: The elastic member (400) is configured as a spring.

5. The blade clamping device according to claim 4, characterized in that: The material of the spring is ceramic.

6. The blade clamping device according to claim 1, characterized in that: The clamp block assembly (200) comprises a threaded fastener (210) and a plurality of clamp blocks, the plurality of clamp blocks enclose a clamping groove (200a), the threaded fastener (210) is connected to the clamp block, and the threaded fastener (210) connects the plurality of clamp blocks to form a whole; the tenon (510) of the blade is arranged in the clamping groove (200a); and the sliding locking portion (300) is arranged on the clamp block.

7. The blade clamping device according to claim 6, characterized in that: The plurality of clamping blocks are respectively configured as a first clamping block (220A1), a second clamping block (220B1), a third clamping block (220A2) and a fourth clamping block (220B2) arranged along the circumference of the installation groove, and the inner side surfaces of the first clamping block (220A1), the second clamping block (220B1), the third clamping block (220A2) and the fourth clamping block (220B2) enclose the clamping groove (200a); The threaded fastener (210) comprises a first threaded fastener (211) and a second threaded fastener (212); the first threaded fastener (211) passes through the first clamp block (220A1), the second clamp block (220B1), and the third clamp block (220A2) in sequence; the second threaded fastener (212) passes through the first clamp block (220A1), the fourth clamp block (220B2), and the third clamp block (220A2) in sequence.

8. The blade clamping device according to claim 7, characterized in that: The inner circumferential surface of the clamping groove (200a) is in close contact with the outer circumferential surface of the tenon (510).

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