Carbon fiber grinding wheel and manufacturing method

Abstract

The present invention discloses a carbon fiber grinding wheel and a manufacturing method thereof, which includes a grinding wheel base body and an abrasive layer. The grinding wheel base body includes a carbon fiber base body, and a carbon fiber fixing layer is wound and formed on the circumferential surface of the carbon fiber base body; a part of the abrasive layer is embedded between the carbon fiber base body and the carbon fiber fixing layer, and another part of the abrasive layer exposes from the circumferential surface of the carbon fiber fixing layer. The carbon fiber grinding wheel of the present invention can improve the connection strength between the abrasive layer and the grinding wheel base body.

Description

Technical Field

[0001] The present invention relates to the technical field of abrasive tools, and particularly to a carbon fiber grinding wheel and a manufacturing method thereof. Background Art

[0002] A grinding wheel, also known as a vitrified abrasive tool, is a vitrified abrasive tool in which ordinary abrasives are solidified into a certain shape (mostly circular) by a binder and have a certain strength. It generally consists of abrasives, a binder, and pores, and these three parts are often referred to as the three elements of a vitrified abrasive tool. The grinding wheel is the most widely used and most widely applied abrasive tool. When in use, it rotates at a high speed and can perform operations such as rough grinding, semi-finishing grinding, precision grinding, grooving, and cutting on the outer circle, inner circle, plane, and various profiles of metal or non-metal workpieces.

[0003] In the related art, the connection strength between the abrasive layer and the grinding wheel base body is not high, and during the ultra-high speed grinding process, the abrasive layer is likely to separate from the grinding wheel base body. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a carbon fiber grinding wheel, which can improve the connection strength between the abrasive layer and the grinding wheel base body.

[0005] The present invention also provides a manufacturing method of a carbon fiber grinding wheel.

[0006] The carbon fiber grinding wheel according to the first aspect embodiment of the present invention includes: a grinding wheel base body, the grinding wheel base body includes a carbon fiber base body, and a carbon fiber fixing layer is wound and formed on the outer circumferential surface of the carbon fiber base body; an abrasive layer, a part of the abrasive layer is embedded between the carbon fiber base body and the carbon fiber fixing layer, and another part of the abrasive layer exposes from the outer circumferential surface of the carbon fiber fixing layer.

[0007] The carbon fiber grinding wheel according to the embodiment of the present invention has at least the following beneficial effects: a part of the abrasive layer is embedded between the carbon fiber base body and the carbon fiber fixing layer, thus, the connection strength between the abrasive layer and the carbon fiber base body is high, and the abrasive layer is not easily detached during the ultra-high speed grinding process; another part of the abrasive layer exposes from the outer circumferential surface of the carbon fiber fixing layer, and the protruding part of the abrasive layer can perform grinding processing on the workpiece to be processed.

[0008] According to some embodiments of the present invention, the abrasive layer includes protrusions, shoulders are fixed on both sides of the protrusions, the shoulders are embedded between the carbon fiber base body and the carbon fiber fixing layer, and one end of the protrusion exposes from the outer circumferential surface of the carbon fiber fixing layer.

[0009] According to some embodiments of the present invention, the abrasive layer is also adhesively fixed to the carbon fiber base body.

[0010] According to some embodiments of the present invention, the grinding wheel base further includes a titanium alloy base, and the carbon fiber base is fixed to the outer circumferential surface of the titanium alloy base.

[0011] According to some embodiments of the present invention, a boss is provided on the side surface of the grinding wheel base, and the outer circumferential surface of the boss is a truncated conical surface, and the truncated conical surface is used for cooperation with the main shaft.

[0012] According to some embodiments of the present invention, a counterbore is provided on the grinding wheel base, and the counterbore is used to connect the carbon fiber grinding wheel and the main shaft.

[0013] According to the method for manufacturing a carbon fiber grinding wheel according to the second aspect embodiments of the present invention, the following steps are included: forming a carbon fiber base by winding; attaching an abrasive layer to the outer circumferential surface of the carbon fiber base, and winding and forming a carbon fiber fixing layer on the abrasive layer, and the carbon fiber fixing layer covers a part of the abrasive layer, and another part of the abrasive layer exposes from the outer circumferential surface of the carbon fiber fixing layer.

[0014] The method for manufacturing a carbon fiber grinding wheel according to the embodiments of the present invention at least has the following beneficial effects: by winding and forming a carbon fiber fixing layer on the abrasive layer, the carbon fiber fixing layer covers a part of the abrasive layer, and another part of the abrasive layer exposes from the outer circumferential surface of the carbon fiber fixing layer, the connection strength between the abrasive layer and the carbon fiber base can be high, and the abrasive layer is not easy to fall off during the ultra-high speed grinding process.

[0015] According to some embodiments of the present invention, the carbon fiber base is wound and formed on the outer circumferential surface of the titanium alloy base.

[0016] According to some embodiments of the present invention, before winding and forming the carbon fiber base, the titanium alloy base is further processed with a counterbore and a boss, the boss is provided on the side surface of the titanium alloy base, and the outer circumferential surface of the boss is a truncated conical surface, and the truncated conical surface is used for cooperation with the main shaft.

[0017] According to some embodiments of the present invention, before winding and forming the carbon fiber fixing layer, the abrasive layer is fixedly bonded to the outer circumferential surface of the carbon fiber base by glue.

[0018] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further describes the present invention with reference to the drawings and embodiments, wherein:

[0020] Figure 1 is the front view of the carbon fiber grinding wheel according to the embodiment of the present invention;

[0021] Figure 2 is Figure 1 A cross-sectional view of the carbon fiber grinding wheel along the A-A section;

[0022] Figure 3 is Figure 2 A partial enlarged view of region I in;

[0023] Figure 4 The front view of the carbon fiber grinding wheel according to another embodiment of the present invention;

[0024] Figure 5 is Figure 4 A cross-sectional view of the carbon fiber grinding wheel along the B-B section;

[0025] Figure 6 The flowchart of the manufacturing method of the carbon fiber grinding wheel according to the embodiment of the present invention.

[0026] Reference numerals: grinding wheel base 100, carbon fiber base 110, boss 120, counterbore 130, titanium alloy base 140, carbon fiber fixing layer 200, abrasive layer 300, protrusion 310, shoulder 320. Detailed Description of the Invention

[0027] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0028] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0029] In the description of the present invention, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0031] In the description of the present invention, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0032] Referring to Figure 1 and Figure 2 According to an embodiment of the present invention, a carbon fiber grinding wheel includes a grinding wheel base body 100 and an abrasive layer 300. The grinding wheel base body 100 includes a carbon fiber base body 110, and a carbon fiber fixing layer 200 is wound and formed on the circumferential surface of the carbon fiber base body 110. A part of the abrasive layer 300 is embedded between the carbon fiber base body 110 and the carbon fiber fixing layer 200, and another part of the abrasive layer 300 exposes from the circumferential surface of the carbon fiber fixing layer 200.

[0033] A part of the abrasive layer 300 is embedded between the carbon fiber base body 110 and the carbon fiber fixing layer 200, that is, a part of the abrasive layer 300 is clamped by the carbon fiber base body 110 and the carbon fiber fixing layer 200. The connection strength between the abrasive layer 300 and the carbon fiber base body 110 is high, and the abrasive layer 300 is not easily detached during the ultra-high speed grinding process. Another part of the abrasive layer 300 exposes from the circumferential surface of the carbon fiber fixing layer 200, and the protruding part of the abrasive layer 300 can perform grinding on the workpiece to be processed.

[0034] In addition, carbon fiber has the characteristics of low mass, small deformation, and low damping. The carbon fiber base body 110 can reduce the overall mass of the carbon fiber grinding wheel and reduce the load on the main shaft.

[0035] In some embodiments of the invention, the abrasive grains of the abrasive layer 300 can be one or more of diamond, cubic boron nitride, corundum, and silicon carbide, the binder of the abrasive grains can be one or more of ceramic binder, resin binder, and metal binder, and the forming process of the abrasive layer 300 can be one of hot pressing, electroplating, brazing, and 3D printing.

[0036] Referring to Figures 1 to 3 In some embodiments of the invention, the abrasive layer 300 includes a protrusion 310, shoulders 320 are fixed on both the front side and the rear side of the protrusion 310, the shoulders 320 are embedded between the carbon fiber base body 110 and the carbon fiber fixing layer 200, and the upper end of the protrusion 310 exposes from the circumferential surface of the carbon fiber fixing layer 200.

[0037] Thus, after the abrasive layer 300 is wound around the carbon fiber fixing layer 200, the shoulder 320 is clamped by the carbon fiber matrix 110 and the carbon fiber fixing layer 200, and the abrasive layer 300 is not easily detached. The shoulders 320 are fixed to both the front side and the rear side of the protrusion 310, the force on the abrasive layer 300 is uniform, the protrusion 310 is not easily skewed, and the abrasive layer 300 is not easily subjected to an axial component force, thereby protecting the carbon fiber fixing layer 200 and extending the service life of the carbon fiber grinding wheel.

[0038] Specifically, the protrusion 310 and the shoulder 320 are generally integrally formed. In some embodiments, the shoulder 320 can also be adhesively fixed to the protrusion 310.

[0039] Refer to Figures 1 to 3 , in some embodiments of the invention, the abrasive layer 300 is also adhesively fixed to the carbon fiber matrix 110. The abrasive layer 300 being adhesively fixed to the carbon fiber matrix 110 can further improve the connection strength between the abrasive layer 300 and the carbon fiber matrix 110. In addition, before winding the carbon fiber fixing layer 200, the abrasive layer 300 being adhesively fixed to the carbon fiber matrix 110 can perform a preliminary positioning of the abrasive layer 300 and prevent the abrasive layer 300 from shifting during the process of winding the carbon fiber fixing layer 200.

[0040] When the abrasive layer 300 is adhesively bonded to the carbon fiber matrix 110, AB glue can be used, such as acrylate AB glue or epoxy resin AB glue.

[0041] Refer to Figure 4 and Figure 5 , in some embodiments of the invention, the grinding wheel base 100 further includes a titanium alloy base 140, and the carbon fiber matrix 110 is fixed to the outer circumferential surface of the titanium alloy base 140. The titanium alloy has high strength, and using the titanium alloy base 140 to connect with the main shaft can extend the service life of the carbon fiber grinding wheel.

[0042] In a further embodiment of the invention, a boss 120 is provided on the front side of the grinding wheel base 100, and the outer circumferential surface of the boss 120 is a truncated conical surface for mating with the main shaft. It should be noted that the truncated conical surface is the outer circumferential surface of a truncated cone, and the truncated cone is formed by a part of the top of a cone being cut off by a plane. Thus, when installing the carbon fiber grinding wheel, a conical groove can be correspondingly opened on the main shaft, and the boss 120 is inserted into the conical groove, and the conical surfaces are mated, which can improve the assembly accuracy of the carbon fiber grinding wheel and avoid affecting the dynamic balance of the carbon fiber grinding wheel due to installation errors.

[0043] Specifically, refer to <S Figure 1 and Figure 2 , the boss 120 is formed when the carbon fiber matrix 110 is wound and formed. Refer to Figure 4 and Figure 5, the boss 120 can also be machined from a titanium alloy substrate 140.

[0044] In a further embodiment of the invention, a countersunk hole 130 is provided on the grinding wheel substrate 100. The countersunk hole 130 is used to connect the carbon fiber grinding wheel and the spindle. Thus, after the screw passes through the countersunk hole 130, the carbon fiber grinding wheel can be fixed to the spindle. In addition, the head of the screw does not protrude from the rear side of the grinding wheel substrate 100, reducing unnecessary space occupation.

[0045] To ensure the dynamic balance of the carbon fiber grinding wheel, the center line of the countersunk hole 130 generally coincides with the axis of the carbon fiber grinding wheel.

[0046] Similarly, referring to Figure 1 and Figure 2 , the countersunk hole 130 can be provided on the carbon fiber substrate 110. Referring to Figure 4 and Figure 5 , the countersunk hole 130 can also be provided on the titanium alloy substrate 140.

[0047] Referring to Figure 2 and Figure 6 , according to the method for manufacturing a carbon fiber grinding wheel of an embodiment of the present invention, the following steps are included: S100, forming a carbon fiber substrate 110 by winding molding; S200, attaching an abrasive layer 300 to the outer circumferential surface of the carbon fiber substrate 110, and winding and molding a carbon fiber fixing layer 200 on the abrasive layer 300. The carbon fiber fixing layer 200 covers a part of the abrasive layer 300, and another part of the abrasive layer 300 exposes from the outer circumferential surface of the carbon fiber fixing layer 200.

[0048] By winding and molding a carbon fiber fixing layer 200 on the abrasive layer 300, and the carbon fiber fixing layer 200 covers a part of the abrasive layer 300, the connection strength between the abrasive layer 300 and the carbon fiber substrate 110 can be improved, and the abrasive layer 300 is not easily detached during ultra-high speed grinding. Another part of the abrasive layer 300 exposes from the outer circumferential surface of the carbon fiber fixing layer 200, and the protruding part of the abrasive layer 300 can perform grinding on the workpiece to be processed.

[0049] In a further embodiment of the invention, the method for manufacturing a carbon fiber grinding wheel of an embodiment of the present invention further includes step S300, trimming and dressing the carbon fiber grinding wheel, placing the carbon fiber grinding wheel on a dynamic balancer, and removing the unbalance amount. After the unbalance amount of the carbon fiber grinding wheel is removed, when it rotates at ultra-high speed (linear velocity greater than 300 m / s), the movement is stable and the radial runout is small.

[0050] Referring to Figure 5, in some embodiments of the invention, the abrasive layer 300 includes protrusions 310, and shoulders 320 are fixed to both the front side and the rear side of the protrusions 310. When the carbon fiber fixing layer 200 is wound and formed on the abrasive layer 300, the carbon fiber fixing layer 200 covers the shoulders 320, and the upper ends of the protrusions 310 expose from the outer circumferential surface of the carbon fiber fixing layer 200.

[0051] Thus, after the abrasive layer 300 is wound around the carbon fiber fixing layer 200, the shoulders 320 are clamped by the carbon fiber matrix 110 and the carbon fiber fixing layer 200, and the abrasive layer 300 is not easily detached. Shoulders 320 are fixed to both the front side and the rear side of the protrusions 310, the force on the abrasive layer 300 is uniform, the protrusions 310 are not easily skewed, and the abrasive layer 300 is not easily generated with axial component forces, thereby protecting the carbon fiber fixing layer 200 and preventing the carbon fiber fixing layer 200 from being quickly damaged.

[0052] Refer to Figure 5 , in some embodiments of the invention, the carbon fiber matrix 110 is wound and formed on the outer circumferential surface of the titanium alloy matrix 140. That is, the carbon fiber matrix 110 is first wound and formed on the titanium alloy matrix 140, then the abrasive layer 300 is attached to the outer circumferential surface of the carbon fiber matrix 110, and finally the carbon fiber fixing layer 200 is wound and formed.

[0053] The titanium alloy matrix 140 has high strength, and the carbon fiber grinding wheel is connected to the main shaft through the titanium alloy matrix 140, which is beneficial to improving the service life of the carbon fiber grinding wheel.

[0054] Refer to Figure 5 , in some embodiments of the invention, before the carbon fiber matrix 110 is wound and formed on the titanium alloy matrix 140, a boss 120 and a counterbore 130 are further processed. The boss 120 is arranged on the front side surface of the titanium alloy matrix 140, and the outer circumferential surface of the boss 120 is a flat truncated conical surface.

[0055] Thus, when installing the carbon fiber grinding wheel, a conical groove can be correspondingly opened on the main shaft, the boss 120 is inserted into the conical groove, and the conical surfaces are matched, which can improve the assembly accuracy of the carbon fiber grinding wheel and prevent the dynamic balance of the carbon fiber grinding wheel from being affected by the installation error. After the screw passes through the counterbore 130, the carbon fiber grinding wheel can be fixed on the main shaft. In addition, the head of the screw does not protrude from the rear side surface of the grinding wheel matrix 100, avoiding unnecessary space occupation.

[0056] The above has described the embodiments of the present invention in detail with reference to the drawings, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art to which the present invention pertains, various changes can be made without departing from the gist of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. Carbon fiber grinding wheel, characterized in that, include: A grinding wheel matrix, the grinding wheel matrix comprising a carbon fiber matrix, the outer circumferential surface of the carbon fiber matrix being wound with a carbon fiber fixing layer; An abrasive layer, wherein the abrasive layer is bonded and fixed to the carbon fiber matrix, the abrasive layer includes a protrusion, and shoulders are fixed on the front and rear sides of the protrusion. When the carbon fiber fixing layer is wound on the abrasive layer, the carbon fiber fixing layer covers the shoulder so that the shoulder is embedded between the carbon fiber matrix and the carbon fiber fixing layer, and the upper end of the protrusion is exposed from the outer circumferential surface of the carbon fiber fixing layer.

2. The carbon fiber grinding wheel according to claim 1, characterized in that The grinding wheel matrix further includes a titanium alloy matrix, and the carbon fiber matrix is fixed to the outer circumferential surface of the titanium alloy matrix.

3. The carbon fiber grinding wheel according to claim 1, characterized in that A boss is provided on the side of the grinding wheel base, and the outer circumferential surface of the boss is a truncated conical surface, which is used to cooperate with the main shaft.

4. The carbon fiber grinding wheel according to claim 1, characterized in that The grinding wheel base is provided with a countersunk hole, and the countersunk hole is used to connect the carbon fiber grinding wheel and the main shaft.

5. A method for manufacturing a carbon fiber grinding wheel, characterized in that: The following steps are involved: A carbon fiber matrix is formed by winding; An abrasive layer is attached to the outer circumferential surface of the carbon fiber matrix, and a carbon fiber fixed layer is wound on the abrasive layer. The abrasive layer includes a protrusion, and shoulders are fixed on the front and rear sides of the protrusion. When the carbon fiber fixed layer is wound on the abrasive layer, the carbon fiber fixed layer covers the shoulder so that the shoulder is embedded between the carbon fiber matrix and the carbon fiber fixed layer, and the upper end of the protrusion is exposed from the outer circumferential surface of the carbon fiber fixed layer.

6. The method for manufacturing a carbon fiber grinding wheel according to claim 5, wherein: The carbon fiber matrix is wound and formed on the outer circumferential surface of the titanium alloy matrix.

7. The method for manufacturing a carbon fiber grinding wheel according to claim 6, wherein: Before winding and forming the carbon fiber matrix, a countersunk hole and a boss are processed on the titanium alloy matrix. The boss is arranged on the side surface of the titanium alloy matrix, and the outer circumferential surface of the boss is a truncated cone surface.

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