Polishing tool and polishing equipment

Abstract

The present application discloses a polishing tool comprising: a hollow tube having a front end and a rear end opposite to each other and capable of being bent and maintaining a bent shape thereof; the polishing component comprises a handle part and a polishing head, the handle part is provided with a front end and a rear end which are opposite to each other, the polishing head is connected to the front end of the handle part, the polishing head is located outside the front end of the hollow pipe, the handle part extends to penetrate through the bent hollow pipe, the flexibility of the handle part is higher than that of the hollow pipe, and the polishing head is connected to the polishing head. And the polishing component is configured to be rotatable, so that the to-be-treated defect part is polished by the polishing head. The polishing tool is easy to operate and high in applicability.

Description

Technical Field

[0001] This application relates to a grinding tool and grinding equipment, particularly for grinding defects in the inner cavity of gas turbine blades. Background Technology

[0002] After gas turbine blades are put into service, due to prolonged exposure to harsh working conditions, defects such as cracks may appear on the blade surface. During refurbishment, these defects need to be ground and removed. Compared to the outer surface, the inner cavity of the blade is invisible, and the grinding location of defects within the inner cavity exhibits interference characteristics. Therefore, grinding defects within the blade's inner cavity is a challenging problem.

[0003] Commonly used polishing tools typically consist of a straight handle and a relatively fine polishing head. This design allows for polishing visible defects on the inner surface near the opening of a cavity. The specific operation involves inserting the polishing head into the cavity and then rotating it to polish the defect. However, such polishing tools are unsuitable if the defect is not located on the inner surface near the opening of the cavity, but rather, for example, on a curved inner surface inside the cavity. Utility Model Content

[0004] To overcome the aforementioned deficiencies in the prior art, this application proposes a polishing tool comprising: a hollow tube having opposing front and rear ends, and the hollow tube being bendable and retaining its bent shape; and a polishing component comprising a handle and a polishing head, the handle having opposing front and rear ends, and the polishing head being connected to the front end of the handle, wherein the polishing head is located outside the front end of the hollow tube, and the handle extends through the bent hollow tube, wherein the flexibility of the handle is greater than that of the hollow tube, and wherein the polishing component is configured to rotate for polishing the defective area to be treated by the polishing head. The polishing tool of this application is easy to operate and highly applicable.

[0005] Furthermore, the size of the grinding head is larger than the internal dimension of the hollow tube at its front end, preventing the grinding head from entering the interior of the hollow tube. Specifically, the hollow tube is circular, and the grinding head has a circular shape, wherein the diameter of the grinding head is larger than the inner diameter of the hollow tube. This improves the operational stability of the grinding tool.

[0006] Furthermore, the hollow tube is made of one of aluminum alloy, copper alloy, titanium alloy, carbon steel, and stainless steel. Accordingly, hollow tubes meeting both flexibility and rigidity requirements can be manufactured at low cost.

[0007] Furthermore, the handle portion is made of one of the following: metal wire, rubber, thermoplastic elastomer, and carbon fiber. Accordingly, a handle portion meeting flexibility requirements can be manufactured at low cost.

[0008] Furthermore, the rear end of the handle is connected to an electric actuator, which drives the grinding component to rotate. This facilitates the operation of the grinding tool and saves labor required for its operation.

[0009] Furthermore, the rear end of the handle is located outside the rear end of the hollow tube. This facilitates the connection and operation of the grinding components.

[0010] Furthermore, the polishing tool also includes a camera mounted on the hollow tube. This allows for easy determination of the location of defects during operation.

[0011] Furthermore, the camera is positioned at the front end of the hollow tube. This improves the accuracy of determining the location of defects.

[0012] Furthermore, this application also proposes a polishing apparatus, comprising: the aforementioned polishing tool; and an electric actuator connected to the rear end of the handle to drive the polishing component to rotate. The polishing apparatus of this application facilitates the adaptation of the polishing tool to common electric actuators, thereby reducing costs. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0014] Figure 1 The image schematically shows a side sectional view of the polishing tool of this application; and

[0015] Figure 2 The side sectional view schematically shows the bent portion of the defect in the inner cavity used for polishing gas turbine blades. Figure 1 The polishing tools shown.

[0016] List of reference numerals

[0017] 100 polishing tools

[0018] 1 Hollow tube

[0019] 2. Grinding components

[0020] 21 handle part

[0021] 22 grinding heads

[0022] 200 gas turbine blades

[0023] D Defect Department Detailed Implementation

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps, modules, or units is not necessarily limited to those explicitly listed, but may include other steps, modules, or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0026] refer to Figure 1 and Figure 2 This application discloses a polishing tool 100. The polishing tool 100 may include a hollow tube 1 and a polishing component 2.

[0027] Hollow tube 1 has front ends that are opposite to each other (e.g. Figure 1 The left end shown) and the rear end (as shown) Figure 1 (As shown at the right end). The hollow tube 1 can be bent and retain its bent shape, such as... Figure 2 As shown. The hollow tube 1 of this application can be bent into a desired shape by the user as needed (in particular, the location of the defect in the inner cavity of the gas turbine blade) before use, and then inserted into the inner cavity of the gas turbine blade together with the grinding component 2 to approach the defect.

[0028] The grinding component 2 may include a handle portion 21 and a grinding head 22 (e.g., a common alloy grinding head). The handle portion 21 has front ends facing each other (e.g., ...). Figure 1 The left end shown) and the rear end (as shown) Figure 1(as shown on the right end), and the grinding head 22 is connected to the front end of the handle portion 21, for example, the grinding head 22 and the handle portion 21 are integrated. The size of the grinding component 2 can be selected according to the internal cavity size of a specific product (e.g., the gas turbine blade illustrated in this application).

[0029] The grinding head 22 is located outside the front end of the hollow tube 1, and the handle portion 21 extends through the bent hollow tube 1. The handle portion 21 is more flexible than the hollow tube 1; the material selection for the handle portion 21 and the hollow tube 1, as well as the flexibility or rigidity requirements, will be explained in detail later. The grinding component 2 is configured to rotate, that is, the handle portion 21 and the grinding head 22 rotate together, so that the grinding head 22 can grind the defect D to be processed.

[0030] In one embodiment, the size of the grinding head 22 is larger than the internal dimensions of the hollow tube 1 at its front end, preventing the grinding head 22 from entering the interior of the hollow tube 1. Specifically, the hollow tube 1 can be a circular tube, and the grinding head 22 has a circular shape, wherein the diameter of the grinding head 22 is larger than the inner diameter of the hollow tube 1. Of course, the shapes of the hollow tube 1 and the grinding head 22 are not limited to this. Furthermore, the size of the grinding head 22 and the internal dimensions of the hollow tube 1 are not limited, and the grinding head 22 can be held and positioned outside the hollow tube 1 by the user's grip.

[0031] For example, the hollow tube 1 is made of one of aluminum alloy, copper alloy, titanium alloy, carbon steel, and stainless steel. Such materials can meet the flexibility and rigidity requirements for manufacturing the hollow tube 1 of this application; that is, they have sufficient flexibility to allow the hollow tube 1 to be bent by the user, and sufficient rigidity to maintain its shape after bending. For example, the hollow tube 1 can be a commercially available alloy hollow tube with a wall thickness of approximately 0.5 mm, and the size of the hollow tube can be selected according to the size of the handle portion 21 and the internal cavity size of a specific product.

[0032] For example, the handle portion 21 can be made of one of the following: metal wire, rubber, thermoplastic elastomer, and carbon fiber. Such a handle portion 21 is typically so-called soft, meaning it has high flexibility and cannot withstand pressure during high-speed rotation, and is therefore used in conjunction with a hollow tube 1 that has sufficient rigidity.

[0033] In one embodiment, the rear end of the handle portion 21 can be connected to an electric actuator, such as a handheld electric actuator, so that the polishing component 2 can be rotated by the electric actuator. Of course, this application is not limited to this; for example, the polishing can be performed by the user holding the rear end of the handle portion 21.

[0034] In one embodiment, the rear end of the handle portion 21 may be located outside the rear end of the hollow tube 1; in other words, the handle portion 21 extends through the rear end of the hollow tube 1 to the outside of the hollow tube 1. Of course, this application is not limited to this; for example, the electric actuator may also be directly connected to the handle portion 21 located inside the hollow tube 1.

[0035] In one embodiment, the polishing tool 100 may further include a camera disposed on the hollow tube 1. Specifically, the camera may be disposed at the front end of the hollow tube 1. However, this application is not limited to this; the camera may be located at any position on the hollow tube 1, or the camera may be disposed independently, i.e., not disposed on the hollow tube 1.

[0036] This application also proposes a polishing device. The polishing device includes a polishing tool 100 and an electric drive connected to the rear end of the handle portion 21 of the polishing component 2 of the polishing tool 100 to drive the polishing component 2 to rotate.

[0037] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A polishing tool, characterized in that, The polishing tool (100) includes: A hollow tube (1) having front and rear ends opposite each other, and the hollow tube (1) being bendable and retaining its bent shape; and A polishing component (2) includes a handle (21) and a polishing head (22). The handle (21) has a front end and a rear end facing each other, and the polishing head (22) is connected to the front end of the handle (21). The grinding head (22) is located outside the front end of the hollow tube (1), and the handle (21) extends through the bent hollow tube (1). The handle (21) is more flexible than the hollow tube (1). The grinding component (2) is configured to rotate so that the grinding head (22) can grind the defect (D) to be processed.

2. The polishing tool according to claim 1, characterized in that, The size of the grinding head (22) is larger than the internal size of the hollow tube (1) at its front end, so that the grinding head (22) cannot enter the interior of the hollow tube (1).

3. The polishing tool according to claim 2, characterized in that, The hollow tube (1) is a round tube, and the grinding head (22) has a circular shape, wherein the diameter of the grinding head (22) is larger than the inner diameter of the hollow tube (1).

4. The polishing tool according to claim 1, characterized in that, The hollow tube (1) is made of one of aluminum alloy, copper alloy, titanium alloy, carbon steel and stainless steel.

5. The polishing tool according to claim 1, characterized in that, The handle (21) is made of one of the following: metal wire, rubber, thermoplastic elastomer and carbon fiber.

6. The polishing tool according to claim 1, characterized in that, The rear end of the handle (21) is connected to an electric actuator so that the polishing component (2) is driven to rotate by the electric actuator.

7. The polishing tool according to claim 1 or 6, characterized in that, The rear end of the handle (21) is located outside the rear end of the hollow tube (1).

8. The polishing tool according to claim 1, characterized in that, The polishing tool (100) also includes a camera mounted on the hollow tube (1).

9. The polishing tool according to claim 8, characterized in that, The camera is located at the front end of the hollow tube (1).

10. A grinding device, characterized in that, The polishing equipment includes: The polishing tool (100) according to any one of claims 1 to 9; and An electric actuator is connected to the rear end of the handle (21) to drive the polishing component (2) to rotate.

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