Resin CBN grinding wheel

Abstract

The utility model relates to a resin CBN grinding wheel which comprises a grinding wheel base body, a plurality of ceramic CBN strips and a plurality of resin CBN strips. According to the resin CBN grinding wheel, the resin CBN strips are arranged on the circumference of the grinding wheel base body at intervals, the embedding grooves are formed between the adjacent resin CBN strips, the ceramic CBN strips can be embedded in the embedding grooves, the defect of physical characteristics of a traditional resin CBN grinding wheel base body during accurate grinding machining is overcome, and the resin CBN grinding wheel can be applied to accurate grinding machining. Therefore, the resin CBN grinding wheel can achieve continuous machining of rough grinding and accurate grinding, machining efficiency and machining quality are improved, production cost is reduced, and machining errors are reduced.

Description

Technical Field

[0001] This application belongs to the field of grinding technology, and in particular relates to a resin CBN grinding wheel. Background Technology

[0002] Resin-bonded CBN (Cubic Boron Nitride) grinding wheels offer good elasticity and strong self-sharpening properties, improving both grinding efficiency and surface quality, making them suitable for small-batch processing. While resin-bonded CBN wheels can quickly remove large amounts of material during rough grinding, the mechanical strength of the resin bond is significantly lower than that of ceramic or metal bonds, and the coefficient of thermal expansion of resin materials is much higher than that of ceramics and metals. This makes it difficult to achieve high surface finish and dimensional accuracy requirements in the finish grinding stage. Therefore, current finish grinding processes often require replacing the resin-bonded CBN wheels with specialized finish grinding wheels after rough grinding. This not only leads to cumbersome processing procedures and low efficiency but also increases equipment and processing costs, as well as problems such as clamping errors caused by wheel replacement. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a resin CBN grinding wheel, which solves the problem that resin CBN grinding wheels have to be replaced with other grinding wheels during fine grinding in the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A resin CBN grinding wheel includes: a grinding wheel matrix, a plurality of ceramic CBN strips, and a plurality of resin CBN strips;

[0006] A plurality of resin CBN strips are arranged at intervals along the circumference of the grinding wheel substrate and are bonded and fixed to the circumferential surface of the grinding wheel substrate. An embedding groove is formed between adjacent resin CBN strips, and the embedding groove is provided in a one-to-one correspondence with the ceramic CBN strip. The ceramic CBN strip is embedded in the corresponding embedding groove, and the ceramic CBN strip is bonded and fixed to the adjacent resin CBN strip and / or bonded and fixed to the circumferential surface of the grinding wheel substrate. The side surface of the ceramic CBN strip and the resin CBN strip away from the center of the grinding wheel substrate is coaxial with the circumferential surface of the grinding wheel substrate.

[0007] In an optional embodiment, both the embedding groove and the ceramic CBN strip are fan-shaped, and the center of both the embedding groove and the ceramic CBN strip is the same as the center of the grinding wheel substrate.

[0008] In an alternative embodiment, the shape and size of the embedding groove are matched to the shape and size of the ceramic CBN strip.

[0009] In an optional embodiment, the depth of the embedding groove along the radial direction of the grinding wheel substrate is greater than the width of the ceramic CBN strip along the radial direction of the grinding wheel substrate.

[0010] In an optional embodiment, the embedded grooves are equidistantly distributed along the circumferential direction of the grinding wheel substrate.

[0011] In an optional embodiment, the number of the embedding slots and the ceramic CBN strips is 6 to 12.

[0012] In an optional embodiment, the width of the embedding groove and the ceramic CBN strip along the circumferential direction of the grinding wheel substrate increases at least partially in the direction close to the center of the grinding wheel substrate.

[0013] In an optional embodiment, the resin CBN strip and the ceramic CBN strip are bonded together by resin adhesive or coupling agent.

[0014] In an optional embodiment, the resin adhesive is an epoxy resin adhesive.

[0015] In an optional embodiment, the coupling agent is a silane coupling agent.

[0016] The beneficial effects of this invention are as follows: By arranging resin CBN strips at intervals around the circumference of the grinding wheel matrix, embedding grooves are formed between adjacent resin CBN strips, allowing ceramic CBN strips to be embedded. This overcomes the physical defects of traditional resin CBN grinding wheel matrices during fine grinding, enabling the resin CBN grinding wheel of this invention to be used in fine grinding. Therefore, the resin CBN grinding wheel of this invention can achieve continuous rough and fine grinding, improving processing efficiency and quality, reducing production costs, and minimizing processing errors. Attached Figure Description

[0017] The technical solution of this application will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the resin CBN grinding wheel structure of Embodiment 1 of this application;

[0019] Figure 2 This is a schematic diagram of the grinding wheel matrix structure of Embodiment 1 of this application;

[0020] Figure 3 This is a schematic diagram of the ceramic CBN strip matrix structure of Embodiment 1 of this application;

[0021] Figure 4 This is a schematic diagram of the resin CBN grinding wheel structure of Embodiment 2 of this application;

[0022] Figure 5 This is a schematic diagram of the grinding wheel matrix structure of Embodiment 2 of this application;

[0023] Figure 6 This is a schematic diagram of the resin CBN grinding wheel structure of Embodiment 3 of this application;

[0024] Figure 7 This is a schematic diagram of the grinding wheel matrix structure of Embodiment 3 of this application.

[0025] The attached figures are labeled as follows:

[0026] 1. Grinding wheel base; 11. Embedded groove; 12. Heat dissipation gap;

[0027] 2. Ceramic CBN strips;

[0028] 3. Resin CBN strips. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0030] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] The technical solution of this application will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] Example 1

[0034] This embodiment provides a resin CBN grinding wheel, such as Figures 1-3 As shown, it includes: a grinding wheel substrate 1, several ceramic CBN strips 2 and several resin CBN strips 3.

[0035] A number of resin CBN strips 3 are arranged at intervals along the circumference of the grinding wheel substrate 1 and are bonded and fixed to the circumferential surface of the grinding wheel substrate 1. An embedding groove 11 is formed between adjacent resin CBN strips 3, and the embedding groove 11 is set one-to-one with the ceramic CBN strip 2. The ceramic CBN strip 2 is embedded in the corresponding embedding groove 11, and the ceramic CBN strip 2 is bonded and fixed to the adjacent resin CBN strip 3 and / or bonded and fixed to the circumferential surface of the grinding wheel substrate 1. The side surface of the ceramic CBN strip 2 and the resin CBN strip 3 away from the center of the grinding wheel substrate 1 is coaxial with the circumferential surface of the grinding wheel substrate 1.

[0036] The resin CBN grinding wheel provided in this embodiment, by arranging resin CBN strips 3 at intervals around the circumference of the grinding wheel base 1, forms an embedding groove between adjacent resin CBN strips 3, in which ceramic CBN strips 2 can be embedded. Compared with the traditional resin CBN grinding wheel manufacturing process, it does not add many steps, but effectively makes up for the defects in the physical properties of the traditional resin CBN grinding wheel base during fine grinding. The fine grain size and high hardness of the ceramic CBN strips 2 can effectively improve the surface finish and dimensional accuracy of the workpiece in the fine grinding stage, meeting the processing requirements of high-precision parts. This allows the resin CBN grinding wheel of this embodiment to be used in fine grinding. The rough grinding and fine grinding processes can be completed in one process without changing the grinding wheel, which greatly improves the processing efficiency.

[0037] Therefore, the resin CBN grinding wheel of this embodiment can achieve continuous rough grinding and fine grinding, improve processing efficiency and quality, reduce production costs and reduce processing errors.

[0038] This embodiment provides a method for manufacturing the above-mentioned resin CBN grinding wheel:

[0039] 1) Based on the required grinding wheel performance and specifications, select appropriate resin binder and CBN abrasive grains, and pour the mixed material into a pre-designed mold, such as... Figure 2 As shown, a resin CBN grinding wheel is manufactured using a matching molding process, and an embedding groove 11 is provided.

[0040] 2) Place the mixed ceramic CBN strip raw material into a specially made mold, such as... Figure 3 As shown, the required ceramic CBN strip 2 was produced and then sintered.

[0041] 3) such as Figure 1 As shown, the prepared ceramic CBN strips 2 are embedded in the embedding groove 11 according to a predetermined distribution pattern, and the above-mentioned resin CBN grinding wheel is obtained by grinding.

[0042] In an optional embodiment, both the embedding groove 11 and the ceramic CBN strip 2 are fan-shaped, and the center of both the embedding groove 11 and the ceramic CBN strip 2 is the same as the center of the grinding wheel base 1. This shape of the embedding groove 11 and the ceramic CBN strip 2 reduces the requirements for the mold and makes it easier for the ceramic CBN strip 2 to be embedded into the embedding groove 11 for bonding, reducing the difficulty of the process and improving the manufacturing effect.

[0043] In an alternative embodiment, such as Figure 1 , Figure 2 As shown, the shape and size of the embedding groove 11 match the shape and size of the ceramic CBN strip 2. This matching design ensures that the ceramic CBN strip 2 can be accurately embedded into the embedding groove 11, reducing installation errors and improving the machining accuracy of the grinding wheel. At the same time, the ceramic CBN strip 2 has a better fixing effect, receives more uniform support force, has a larger contact area with the embedding groove 11, and has a stronger adhesive bonding force.

[0044] In an optional embodiment, the grooves 11 are equidistantly distributed along the circumference of the grinding wheel base 1. This uniform distribution design allows the grinding wheel to maintain good balance during high-speed rotation, reducing vibration, improving machining accuracy, and extending the grinding wheel's service life.

[0045] In an optional embodiment, the number of embedded grooves 11 and ceramic CBN strips 2 is 6 to 12. Within this range, the number of ceramic CBN strips 2 ensures sufficient cutting capability of the grinding wheel without making its structure overly complex, thus facilitating manufacturing and maintenance.

[0046] In an optional embodiment, the resin CBN strip 3 and the ceramic CBN strip 2 are bonded together with resin adhesive or coupling agent to ensure the strength of the fixation.

[0047] In an optional embodiment, the resin adhesive is an epoxy resin adhesive. Epoxy resin adhesive has good bonding strength and heat resistance, and can maintain a stable bonding effect under the high temperature environment generated by the high-speed rotation and cutting of the resin CBN grinding wheel in this embodiment.

[0048] In an optional embodiment, the coupling agent is a silane coupling agent. Silane coupling agents can form chemical bonds between inorganic and organic materials, improving bond strength and durability. They are particularly suitable for bonding materials with different properties, such as ceramic CBN strip 2 and resin CBN strip 3, ensuring the stability of the resin CBN grinding wheel in this embodiment during operation.

[0049] Example 2

[0050] This embodiment provides a resin CBN grinding wheel, which differs from the resin CBN grinding wheel provided in Embodiment 1 in that: Figure 4 , Figure 5As shown, the depth of the embedding groove 11 along the radial direction of the grinding wheel base 1 is greater than the width of the ceramic CBN strip 2 along the radial direction of the grinding wheel base 1. After the ceramic CBN strip 2 is embedded and fixed in the embedding groove 11, a heat dissipation gap 12 is formed between the ceramic CBN strip 2 and the circumferential surface of the grinding wheel base 1. This structure can improve the heat dissipation performance of the grinding wheel, reduce the thermal deformation of the grinding wheel during operation, and prevent excessive stress at the connection between the ceramic CBN strip 2 and the resin CBN strip 3.

[0051] Example 3

[0052] This embodiment provides a resin CBN grinding wheel, which differs from the resin CBN grinding wheel provided in Embodiment 1 in that: Figure 6 , Figure 7 As shown, the width of the embedding groove 11 and the ceramic CBN strip 2 along the circumferential direction of the grinding wheel base 1 increases at least partially in the direction close to the center of the grinding wheel base 1. This design allows the inner wall of the embedding groove 11 to prevent the ceramic CBN strip 2 from centrifugating when the resin CBN grinding wheel rotates at high speed, thus playing a certain role in preventing the ceramic CBN strip 2 from falling off.

[0053] Based on the above-described preferred embodiments according to this application, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this application. The technical scope of this application is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A resin CBN grinding wheel, characterized in that, include: A grinding wheel substrate (1), several ceramic CBN strips (2) and several resin CBN strips (3); A plurality of resin CBN strips (3) are arranged at intervals along the circumference of the grinding wheel substrate (1) and are bonded and fixed to the circumferential surface of the grinding wheel substrate (1). An embedding groove (11) is formed between adjacent resin CBN strips (3), and the embedding groove (11) is provided in a one-to-one correspondence with the ceramic CBN strip (2). The ceramic CBN strip (2) is embedded in the corresponding embedding groove (11), and the ceramic CBN strip (2) is bonded and fixed to the adjacent resin CBN strip (3) and / or bonded and fixed to the circumferential surface of the grinding wheel substrate (1). The side surface of the ceramic CBN strip (2) and the resin CBN strip (3) away from the center of the grinding wheel substrate (1) is coaxial with the circumferential surface of the grinding wheel substrate (1).

2. The resin CBN grinding wheel according to claim 1, characterized in that, The embedded groove (11) and the ceramic CBN strip (2) are both fan-shaped, and the center of the embedded groove (11) and the ceramic CBN strip (2) are the same as the center of the grinding wheel base (1).

3. The resin CBN grinding wheel according to claim 2, characterized in that, The shape and size of the embedding groove (11) are matched with the shape and size of the ceramic CBN strip (2).

4. The resin CBN grinding wheel according to claim 2, characterized in that, The depth of the embedding groove (11) along the radial direction of the grinding wheel base (1) is greater than the width of the ceramic CBN strip (2) along the radial direction of the grinding wheel base (1).

5. The resin CBN grinding wheel according to any one of claims 1-4, characterized in that, The embedded grooves (11) are equidistantly distributed along the circumferential direction of the grinding wheel base (1).

6. The resin CBN grinding wheel according to claim 5, characterized in that, The number of the embedding grooves (11) and the ceramic CBN strips (2) is 6 to 12.

7. The resin CBN grinding wheel according to any one of claims 1-4, characterized in that, The width of the embedding groove (11) and the ceramic CBN strip (2) along the circumferential direction of the grinding wheel base (1) increases at least partially along the direction close to the center of the grinding wheel base (1).

8. The resin CBN grinding wheel according to any one of claims 1-4, characterized in that, The resin CBN strip (3) and the ceramic CBN strip (2) are bonded together by resin adhesive or coupling agent.

9. The resin CBN grinding wheel according to claim 8, characterized in that, The resin adhesive is an epoxy resin adhesive.

10. The resin CBN grinding wheel according to claim 8, characterized in that, The coupling agent is a silane coupling agent.

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