A method for manufacturing a metal plated abrasive belt having an arbitrary cross-sectional shape

Abstract

The application discloses a manufacturing method of metal electroplated abrasive belt with arbitrary cross section shape, comprising the following steps: firstly, inserting sheet-shaped elastic metal sheets into steel wire rope to construct the skeleton of the electroplated abrasive belt; and secondly, filling rubber between the skeleton to manufacture the electroplated base body of the belt-shaped polishing tool. The method combines mold pressing and grinding to obtain the high-precision and special-shaped abrasive belt base body, then the superhard abrasive is attached on the exposed surface of the ground abrasive belt collective through electroplating, thereby preparing the electroplated abrasive belt polishing tool with arbitrary cross section shape. The abrasive belt can be cut into a certain length and connected into a ring structure by the method, and the polishing tool can be driven by the similar driving device of the common plane abrasive belt to realize polishing processing. The polishing tool is characterized in that the electroplating can be repeated through the mode of stripping, grinding and re-electroplating, and the working life of the polishing tool can be significantly prolonged, and the polishing technical problems of the difficult polishing areas such as the root of turbine blade and the concave curved surface of blade basin can be solved.

Description

Technical Field

[0001] This invention relates to the field of electroplating and polishing technology, specifically to a method for manufacturing a metal electroplating abrasive belt with an arbitrary cross-sectional shape. Background Technology

[0002] Superhard abrasive electroplated polishing tools are characterized by long lifespan and high precision retention, thus playing a crucial role in the polishing and error correction of precision parts. However, wheel-shaped tools require an additional transmission system when machining the root region of turbine blades. The addition of toothed belts or gears makes the entire device prone to interference with the workpiece. Furthermore, the effective area of ​​the tool is relatively small, and its working life is short. Using belt tools can effectively increase the abrasive grain area, extend the tool's lifespan, and more easily automate the polishing of difficult-to-polish areas. However, how to manufacture a high-curvature drum-shaped cross-section electroplated abrasive belt tool remains a current technical challenge. Summary of the Invention

[0003] This invention provides a method for manufacturing a metal electroplating abrasive belt with arbitrary cross-sectional shape, which solves the polishing technical problem of difficult-to-polish areas such as the root of turbine blades and blade basin.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a method for manufacturing a metal electroplating abrasive belt with an arbitrary cross-sectional shape, comprising the following steps:

[0005] S1. First, the metal elastic sheet is prepared into a conical umbrella-shaped structure by stamping.

[0006] S2. Then, thread the metal elastic sheet onto the steel wire rope and weld the steel wire rope together. Next, connect the middle position of the metal elastic sheet to the outer wall of the steel wire rope to form the skeleton of the electroplated sand belt.

[0007] S3. Then, the steel wire rope skeleton with metal elastic sheet is placed into the mold, and rubber is poured into the mold. The sand belt electroplating blank is obtained by thermosetting.

[0008] S4. The abrasive belt electroplating blank is ground using a forming grinding method to obtain the required precise shape of the abrasive belt.

[0009] S5. Finally, the superhard abrasive grains are bonded to the outer surface of the exposed umbrella-shaped metal elastic sheet through a nickel electroplating process, thereby forming a complete electroplated abrasive belt.

[0010] Preferably, the metal elastic sheet includes a short cylindrical surface in the middle and spokes on the outside. The short cylindrical surface in the middle is used to keep the wire rope or wire in contact, and the spokes on the outside are arranged radially around the cylindrical surface.

[0011] Preferably, the upper end of the spoke maintains a corresponding angle with the center line of the short cylindrical surface at the middle position to ensure that it has the ability to deform radially.

[0012] Preferably, the included angle can be freely adjusted according to the rigidity requirements in each direction.

[0013] Preferably, the connection between the middle position of the metal elastic sheet and the steel wire rope includes spraying a small amount of metal powder.

[0014] Preferably, the umbrella-shaped metal elastic sheet further includes an opening structure, which is fixed to a pre-prepared annular steel wire ring by a continuous forming method using a mold.

[0015] Preferably, the electroplated abrasive belt is cut into small segments as needed and prepared into annular abrasive belts of different lengths by means of hinge or welding.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. In this invention, the umbrella-shaped metal structure is easy to manufacture and easy to realize the automated large-scale production of electroplated sand belts.

[0018] 2. In this invention, the cross-sectional shape can be designed arbitrarily to meet the polishing requirements of difficult-to-polish areas such as the root of turbine blades and the blade basin with large curvature, as well as complex structures.

[0019] 3. In this invention, the electroplated abrasive belt has a relatively long perimeter and its local radius of curvature can be very small, which can meet the requirements for the preparation of long-life polishing tools with complex structures.

[0020] 4. This invention can be repeatedly electroplated through processes such as stripping, grinding, and re-electroplizing, resulting in a long service life and low operating costs.

[0021] 5. This invention can remove abrasive debris during folding and can be used for polishing soft materials. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0023] In the attached diagram:

[0024] Figure 1 This is a cross-sectional view of the umbrella-shaped electroplating abrasive belt cut with a conical surface according to the present invention;

[0025] Figure 2 This is a cross-sectional view of the umbrella-shaped electroplating abrasive belt of the present invention;

[0026] Figure 3This is a schematic longitudinal section of the umbrella-shaped electroplating abrasive belt of the present invention;

[0027] Figure 4 This is the present invention. Figure 3 A magnified structural diagram of part A in the middle;

[0028] Figure 5 This is a schematic diagram of the electroplating sand belt of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the metal elastic sheet of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the metal elastic sheet with an opening structure of the present invention;

[0031] The labels in the diagram are: 1. Spoke; 2. Rubber; 3. Steel wire rope; 4. Abrasive grains; 5. Nickel plating. Detailed Implementation

[0032] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0033] Example: Figures 1-3 As shown, a method for manufacturing a metal electroplating abrasive belt with an arbitrary cross-sectional shape includes the following steps:

[0034] S1. First, the metal elastic sheet is prepared into a conical umbrella-shaped structure by stamping. The metal elastic sheet includes a short cylindrical surface in the middle and spokes 1 on the outside. The short cylindrical surface in the middle is used to keep the steel wire rope 3 or steel wire in contact. The spokes 1 on the outside are arranged radially around the cylindrical surface. The upper end of the spokes 1 and the center line of the short cylindrical surface in the middle position maintain a corresponding angle to ensure that it has the ability to deform radially. The angle can be freely adjusted according to the rigidity requirements in each direction.

[0035] The umbrella-shaped metal elastic sheet also includes an opening structure, which is fixed to a pre-prepared annular steel wire ring by a continuous forming method using a mold;

[0036] S2. Then, the metal elastic sheet is threaded onto the steel wire rope 3 and the steel wire rope 3 is welded together. Then, the middle position of the metal elastic sheet is connected to the outer wall of the steel wire rope 3 by spraying a small amount of metal powder to form the skeleton of the electroplated sand belt.

[0037] S3. Then, the steel wire rope 3 skeleton with metal elastic sheet is placed into the mold, and rubber 2 is poured into the mold. The sand belt electroplating blank is obtained by thermosetting.

[0038] S4. Use a profile grinding method to grind the abrasive belt electroplating blank to obtain the required precise shape;

[0039] S5. Finally, the superhard abrasive grains 4 are bonded to the outer surface of the exposed umbrella-shaped metal elastic sheet through a nickel electroplating layer 5 by an electroplating process, thereby forming a complete electroplated abrasive belt.

[0040] Specifically, this invention involves preparing a metal elastic sheet using methods such as stamping to form... Figure 1 The umbrella-shaped structure shown has a short cylindrical section in the middle for contact with the steel wire rope 3 or steel wire. Specifically, it can be connected to the steel wire or steel wire rope 3 by spraying a small amount of metal powder. Its outer part consists of umbrella-shaped radial spokes 1, which maintain a reasonable angle with the center of the central cylindrical section. This angle can be used to adjust the radial stiffness of each spoke 1. The angle between each spoke 1 and the center line can be, but is not necessarily, a constant angle, in order to adjust the stiffness in each direction.

[0041] First, the metal elastic sheet is threaded onto the steel wire rope 3, then the steel wire rope 3 is welded together, and then placed into a mold. Rubber 2 is filled into the mold, and a complete electroplated abrasive belt blank is made by means of hot pressing and curing. Then, the surface is ground using a forming grinding method to obtain the required precise shape. Finally, superhard abrasive grains 4 are bonded to the outer surface of the exposed umbrella-shaped metal elastic sheet through processes such as electroplating to form a complete electroplated abrasive belt.

[0042] This sanding belt can be installed on an angled head with two pulleys for polishing operations. In order to reduce tension, a set of pressure rollers can be used to press the sanding belt onto the drive pulley, reducing the tension requirement of the sanding belt and improving its service life.

[0043] Umbrella-shaped metal elastic sheets can also be made into open structures and fixed to pre-prepared annular steel wire rings using a continuous forming method with molds.

[0044] Alternatively, the abrasive belt can be made into long strips and cut into small sections as needed, and then bonded or welded to form ring-shaped abrasive belts of different lengths.

[0045] This method combines molding and grinding to obtain high-precision and irregularly shaped abrasive belt substrates. Then, one or more layers of superhard abrasive grains are electroplated onto the exposed metal surface of the ground abrasive belt substrate, thus creating an electroplated abrasive belt polishing tool with arbitrary cross-sectional shapes. Using this method, the abrasive belt can be cut to a certain length before or after electroplating and connected into a ring structure through methods such as bonding or welding. It can be driven by a drive device similar to that used for ordinary flat abrasive belts to achieve polishing. The polishing tool is characterized by its ability to be repeatedly electroplated through processes such as stripping, grinding, and replating, significantly extending its service life. It can meet the technical challenges of polishing difficult-to-polish areas such as turbine blade roots and blade basins with large curvature concave surfaces.

[0046] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for manufacturing a metal electroplating abrasive belt with an arbitrary cross-sectional shape, characterized in that, Includes the following steps: S1. First, the metal elastic sheet is prepared into a conical umbrella-shaped structure by stamping. S2. Then, thread the metal elastic sheet onto the steel wire rope and weld the steel wire rope together. Next, connect the middle position of the metal elastic sheet to the outer wall of the steel wire rope to form the skeleton of the electroplated sand belt. S3. Then, the steel wire rope skeleton with metal elastic sheet is placed into the mold, and rubber is poured into the mold. The sand belt electroplating blank is obtained by thermosetting. S4. Use a forming grinding method to grind the electroplating blank of the abrasive belt to obtain the required precise shape of the abrasive belt substrate. S5. Finally, the superhard abrasive grains are bonded to the outer surface of the exposed umbrella-shaped metal elastic sheet through a nickel electroplating layer by an electroplating process, thereby forming a complete electroplated abrasive belt. The metal elastic sheet includes a short cylindrical surface in the middle and spokes on the outside. The short cylindrical surface in the middle is used to keep the wire rope in contact, and the spokes on the outside are arranged radially around the short cylindrical surface. The upper end of the spoke and the center line of the short cylindrical surface in the middle position maintain a corresponding angle to ensure that it has the ability to deform radially; The included angle can be freely adjusted according to the rigidity requirements in each direction.

2. The method for manufacturing a metal electroplating abrasive belt with an arbitrary cross-sectional shape according to claim 1, characterized in that: The connection between the middle position of the metal elastic sheet and the steel wire rope includes spraying a small amount of metal powder.

3. The method for manufacturing a metal electroplating abrasive belt with an arbitrary cross-sectional shape according to claim 1, characterized in that: The umbrella-shaped metal elastic sheet also includes an opening structure, which is fixed to a pre-prepared annular steel wire ring by a continuous forming method using a mold.

4. The method for manufacturing a metal electroplating abrasive belt with an arbitrary cross-sectional shape according to claim 1, characterized in that: The electroplated abrasive belt is cut into small segments as needed and then prepared into ring-shaped abrasive belts of different lengths by means of bonding or welding.

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