Composite grinding ceramic CBN graphite strip grinding wheel
By introducing graphite strips into the ceramic CBN grinding wheel, the problem of workpiece burn during cylindrical grinding is solved, and higher processing quality and lower roughness are achieved.
Patent Information
- Application Number
- CN202421862914.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-02
AI Technical Summary
During the cylindrical grinding process, the grinding conditions of the end surface and rounded corners are poor, resulting in increased friction resistance and high temperatures, causing the local metal structure on the surface of the workpiece to anneale and shrink, forming a concave shape and turning purple on the surface, resulting in grinding burns.
A composite grinding ceramic CBN graphite strip grinding wheel is designed. The grinding wheel disc is composed of a combination of multiple grinding wheel sheets to form an annular structure. The first grinding wheel sheet is equipped with graphite strips. The graphite strips are embedded in the grinding wheel sheet through the accommodating groove, protruding from the grinding surface and the chamfering surface, playing the role of self-lubricating and blocking continuous sparks.
The self-lubricating and high-temperature thermal conductivity of graphite strips improves the finish and processing quality of the workpiece, reduces the roughness, and effectively avoids workpiece burns.
Smart Images
Figure CN222932515U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of grinding tools, and particularly to a composite grinding ceramic CBN graphite strip grinding wheel. Background Art
[0002] In the grinding process, there is a workpiece outer circle grinding process. The outer circle grinding uses a ceramic CBN grinding wheel to achieve fillet grinding and end face grinding. However, during the outer circle grinding process, it is found that:
[0003] Due to the poor grinding conditions of the end face and fillet, during the grinding process, the abrasive grains exert extrusion, sliding friction on the workpiece surface, and the friction of the grinding chips on the workpiece surface. Especially during the end face grinding process, the grinding area is large, the friction resistance increases, and the heat generated by friction also increases, making it extremely easy to generate high temperatures. The high temperature generated by friction also concentrates in the place where the grinding chips gather, causing local annealing and shrinkage of the metal structure on the workpiece surface, forming a concave shape and the surface color turning purple, resulting in grinding burns. Therefore, it is urgent to solve the problem of burns on the workpiece during the grinding process. Utility Model Content
[0004] In order to solve the above technical problems, this application provides the following technical solutions:
[0005] This application provides a composite grinding ceramic CBN graphite strip grinding wheel, including:
[0006] Base circle; and
[0007] A grinding wheel disc, which is formed by combining a plurality of grinding wheels into an annular structure. The grinding wheel includes a first grinding wheel and a second grinding wheel, and the first grinding wheel and the second grinding wheel are alternately distributed in the circumferential direction of the base circle; wherein, a graphite strip is installed on the first grinding wheel.
[0008] In one implementation, the grinding wheel has a grinding surface and two side surfaces adjacent to the grinding surface, and a chamfer is provided between the grinding surface and the side surface.
[0009] In one implementation, a receiving groove is formed on the first side surface of the first grinding wheel, and the receiving groove extends to the first grinding surface of the first grinding wheel, and the graphite strip is embedded in the receiving groove.
[0010] In one implementation, the graphite strip protrudes from the first grinding surface.
[0011] In one implementation, the graphite strip protrudes from the first chamfer surface of the first grinding wheel.
[0012] In one implementation, the graphite strip is bonded in the receiving groove.
[0013] In one implementation, a clamping member is provided in the receiving groove, and the graphite strip is clamped in the receiving groove through the clamping member.
[0014] In one embodiment, a connecting member is used to connect the grinding wheel piece and the base circle.
[0015] In one embodiment, the base circle has an arc-shaped fitting surface, and a glue layer serving as a connecting member is provided on the fitting surface. The grinding wheel piece is bonded to the fitting surface through the glue layer.
[0016] In one embodiment, the connecting member includes a buckle and a bayonet. The buckle or the bayonet is provided on the base circle, and the grinding wheel piece is connected to the base circle through the cooperation of the buckle and the bayonet.
[0017] This application has at least the following beneficial effects:
[0018] In this application, due to the self-lubricating and anti-corrosive properties of graphite, the graphite strip can play a self-lubricating role during the use of the grinding wheel, improving the surface finish of the machined workpiece and further reducing the roughness of the workpiece. At the same time, due to the unique structure of graphite, it has excellent properties of high temperature resistance, lubrication, heat conduction, and fast heat dissipation. Adding graphite strips at intervals in the grinding position of the grinding wheel can block continuous sparks and effectively avoid workpiece burning. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 A perspective view of a composite grinding ceramic CBN graphite strip grinding wheel provided by an embodiment of this application.
[0020] Figure 2 A disassembly and assembly schematic diagram of a composite grinding ceramic CBN graphite strip grinding wheel provided by an embodiment of this application.
[0021] Figure 3 An exploded schematic diagram of a first grinding wheel piece provided by an embodiment of this application.
[0022] Figure 4 A perspective schematic diagram of a first grinding wheel piece provided by an embodiment of this application.
[0023] Figure 5 A cross-sectional view of a composite grinding ceramic CBN graphite strip grinding wheel provided by an embodiment of this application.
[0024] Figure 6 is Figure 5 A partial enlarged schematic diagram at position A above.
[0025] Reference Signs:
[0026] 100, grinding wheel piece disc;
[0027] 101, first grinding wheel piece; 102, second grinding wheel piece;
[0028] 1010, first body;
[0029] 1011. First grinding surface; 1012. First chamfered surface; 1013. First side surface; 1014. Accommodating groove; 1015. First graphite strip; 1016. Second graphite strip;
[0030] 1020. Second sheet body;
[0031] 1021. Second grinding surface; 1022. Second chamfered surface; 1023. Second side surface;
[0032] 110. Base circle;
[0033] 111. Central axis hole; 112. Fitting surface. Detailed implementation manner
[0034] In order to make the above - mentioned objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manner of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.
[0035] In the description of the present application, it should be understood that if there are terms such as "length", "width", "thickness", "upper", "lower", "vertical", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present application 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. Therefore, it should not be understood as a limitation to the present application.
[0036] In addition, if there are terms such as "first", "second", "third", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second", "third" may explicitly or implicitly include at least one of such features. In the description of the present application, if there is a term "multiple", the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.
[0037] In this application, unless otherwise clearly defined and limited, if terms such as "installed", "connected", "linked", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0038] In this application, unless otherwise clearly defined and limited, if there is a description such as the first feature being "on" or "under" the second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or just means that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or just means that the first feature is at a lower horizontal level than the second feature.
[0039] It should be noted that if an element is referred to as being "fixed to" or "set on" or "provided on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.
[0040] The embodiments of the present application will be specifically described below with reference to the drawings.
[0041] Refer to Figures 1-3 As shown, in some embodiments of the present application, a composite grinding ceramic CBN graphite strip grinding wheel is provided, including: a grinding wheel disc 100 and a base circle 110. The grinding wheel disc 100 is arranged around the periphery of the base circle 110, and the grinding wheel disc 100 is connected to the base circle 110. The base circle 110 has an arc-shaped fitting surface 112 and upper and lower surfaces adjacent to the fitting surface 112. The base circle 110 further includes a shaft hole 111, and the shaft hole 111 extends to the upper and lower surfaces. The shaft hole 111 is used to connect a driver. The grinding wheel disc 100 is disposed close to the fitting surface 112. The fitting surface 112 is specifically annular.
[0042] In this solution, the grinding wheel disc 100 is formed into an annular structure by combining multiple grinding wheels. The grinding wheels include a first grinding wheel 101 and a second grinding wheel 102, and the first grinding wheel 101 and the second grinding wheel 102 are alternately distributed in the circumferential direction of the base circle 110. Among them, graphite strips are installed on the first grinding wheel 101, so that the graphite strips are distributed on the grinding wheel disc 100 at intervals. The unique structure of graphite itself ensures that the graphite strips have excellent properties of high temperature resistance, lubrication, self-lubrication, corrosion resistance, heat conduction and heat dissipation. During the grinding process of the grinding wheel, the graphite strips intermittently contact the machining surface of the workpiece, and the graphite strips can block continuous sparks, effectively avoiding workpiece burning and ensuring the machining quality of the workpiece.
[0043] Furthermore, the grinding wheel has a grinding surface and two side surfaces adjacent to the grinding surface, and a chamfer is provided between the grinding surface and the side surface. Among them, the grinding surface and the chamfer surface serve as the grinding surfaces of the grinding wheel, and are used to form the end face and fillet (or chamfer) of the workpiece respectively.
[0044] In some embodiments of the present application, the first grinding wheel 101 includes a first body 1010. The first body 1010 has a first grinding surface 1011, a first side surface 1013, and a first chamfer surface 1012 formed on the intersecting edge of the first grinding surface 1011 and the first side surface 1013. A receiving groove 1014 is opened on the first side surface 1013, and the receiving groove 1014 extends to the first grinding surface 1011 of the first grinding wheel 101. The graphite strip is embedded in the receiving groove 1014. The receiving groove 1014 forms an opening at least on the first grinding surface 1011, the first side surface 1013, and the first chamfer surface 1012, so that the graphite strip can extend to the opening position formed by the first grinding surface 1011 and the first chamfer surface 1012, facilitating the contact between the graphite strip and the machining surface.
[0045] In this solution, the first body 1010 has two first side surfaces 1013 adjacent to the first grinding surface 1011, and the two first side surfaces 1013 are arranged opposite to each other. The receiving groove 1014 is opened on both first side surfaces 1013 at the same time. The graphite strip includes a first graphite strip 1015 and a second graphite strip 1016. The first graphite strip 1015 and the second graphite strip 1016 are respectively installed in the receiving grooves 1014 on the two first side surfaces 1013. On the one hand, workpieces with two fillets (or chamfers) and one end face can be machined; on the other hand, after one side of the first side surface 1013 and the first grinding surface 1011 are severely worn, the machining can be carried out by replacing them with the first side surface 1013 and the first grinding surface 1011 on the other side to ensure the smoothness of the machining.
[0046] Furthermore, in combination with Figure 5 、 6As shown, the graphite strip protrudes from the first grinding surface 1011. At the same time, the graphite strip also protrudes from the first chamfer surface 1012 of the first grinding wheel 101. Since the texture of graphite itself is soft, the graphite strip protruding from both the first grinding surface 1011 and the first chamfer surface 1012 can squeeze the graphite onto the machining surface, so that the graphite can adhere to the machining surface during grinding.
[0047] Furthermore, exemplarily, the graphite strip is bonded in the receiving groove 1014. Specifically, an adhesive layer is coated on the inner wall of the receiving groove 1014, and the graphite strip is fixed in the receiving groove 1014 through the adhesive layer. The graphite strip is fixed in the receiving groove 1014 to prevent the graphite strip from coming out of the receiving groove 1014 during the rotation of the grinding wheel.
[0048] It should be noted that in this solution, the graphite strip is not limited to being bonded in the receiving groove 1014 through the adhesive layer. It can be understood that there are clamping members in the receiving groove 1014, and the graphite strip is clamped in the receiving groove 1014 through the clamping members. For example, there are inwardly protruding claws in the receiving groove 1014, and the claws serve as clamping members. The graphite strip and the claws are fixed in an interference fit manner.
[0049] Still further, the grinding wheel and the base circle 110 are connected by a connecting member. Among them,
[0050] The fixing method of the grinding wheel and the base circle 110 can be that the base circle 110 has an arc-shaped fitting surface 112, and an adhesive layer serving as a connecting member is provided on the fitting surface 112, and the grinding wheel is bonded to the fitting surface 112 through the adhesive layer.
[0051] The fixing method of the grinding wheel and the base circle 110 can also be that the connecting member includes a buckle and a bayonet, the buckle or the bayonet is provided on the base circle 110, and the grinding wheel and the base circle 110 are connected through the cooperation of the buckle and the bayonet.
[0052] It can be understood that the connection method between the grinding wheel and the base circle 110 includes but is not limited to the methods of adhesive bonding and mutual clamping of the buckle and the bayonet, and common fixing connecting members such as mortise and tenon, screws, etc. can also be used to realize the fixed connection between the grinding wheel and the base circle 110.
[0053] In some embodiments of the present application, refer to Figure 4 , and in combination with Figure 1As shown in the figure, the second grinding wheel 102 includes a second body 1020, which has a second grinding surface 1021, a second chamfered surface 1022 and a second side surface 1023. Among them, the second grinding surface 1021, the second chamfered surface 1022 and the second side surface 1023 are arranged in one-to-one correspondence with the first grinding surface 1011, the first chamfered surface 1012 and the first side surface 1013. Specifically, the second grinding surface 1021 is flush with the first grinding surface 1011, the second chamfered surface 1022 is flush with the first chamfered surface 1012, and the second side surface 1023 is flush with the first side surface 1013. After the first grinding wheel 101 and the second grinding wheel 102 are alternately installed in the circumferential direction of the base circle 110, the joint between the first grinding wheel 101 and the second grinding wheel 102 is flat, and the grinding wheel disc 100 formed by combining the first grinding wheel 101 and the second grinding wheel 102 has strong integrity.
[0054] The above embodiments are used to further illustrate the present application, but do not limit the present application to these specific embodiments. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be understood to be within the protection scope of the present application.
Claims
1. A composite grinding ceramic CBN graphite grinding wheel, characterized in that: include: Base circle (110); as well as A grinding wheel disc (100), wherein the grinding wheel disc (100) is composed of a plurality of grinding wheel discs to form an annular structure, wherein the grinding wheel discs include a first grinding wheel disc (101) and a second grinding wheel disc (102), wherein the first grinding wheel disc (101) and the second grinding wheel disc (102) are alternately distributed in the circumferential direction of the base circle (110); wherein a graphite strip is mounted on the first grinding wheel disc (101).
2. The composite grinding ceramic CBN graphite grinding wheel according to claim 1, characterized in that: The grinding wheel has a grinding surface and two side surfaces adjacent to the grinding surface, and a chamfer is arranged between the grinding surface and the side surfaces.
3. The composite grinding ceramic CBN graphite grinding wheel according to claim 2, characterized in that: A receiving groove (1014) is provided on the first side surface (1013) of the first grinding wheel (101), the receiving groove (1014) extends to the first grinding surface (1011) of the first grinding wheel (101), and the graphite strip is embedded in the receiving groove (1014).
4. The composite grinding ceramic CBN graphite grinding wheel according to claim 3 is characterized in that: The graphite strip protrudes from the first grinding surface (1011).
5. The composite grinding ceramic CBN graphite grinding wheel according to claim 3, characterized in that: The graphite strip protrudes from the first chamfered surface (1012) of the first grinding wheel (101).
6. The composite grinding ceramic CBN graphite grinding wheel according to any one of claims 3 to 5, characterized in that: The graphite strip is bonded in the receiving groove (1014).
7. The composite grinding ceramic CBN graphite grinding wheel according to any one of claims 3 to 5, characterized in that: A clamping piece is provided in the containing groove (1014), and the graphite strip is clamped in the containing groove (1014) via the clamping piece.
8. The composite grinding ceramic CBN graphite grinding wheel according to any one of claims 1 to 5, characterized in that: A connecting piece is provided between the grinding wheel piece and the base circle (110), so that the grinding wheel piece and the base circle (110) are connected.
9. The composite grinding ceramic CBN graphite grinding wheel according to claim 8, characterized in that: The base circle (110) has an arc-shaped fitting surface (112), and a glue layer serving as the connecting member is provided on the fitting surface (112), and the grinding wheel is bonded to the fitting surface (112) via the glue layer.
10. The composite grinding ceramic CBN graphite grinding wheel according to claim 8, characterized in that: The connecting piece comprises a buckle and a bayonet, the buckle or the bayonet is arranged on the base circle (110), and the grinding wheel is connected to the base circle (110) by the buckle being matched with the bayonet.