A polishing head

Abstract

The utility model relates to processing machinery technical field, concretely relates to a kind of polishing grinding head, it includes a kind of polishing grinding head, it includes grinding head handle and the grinding head body fixedly connected with grinding head handle, grinding head body is fixedly connected at the lower end of grinding head handle, the lower end of grinding head handle is equipped with connecting block, grinding head handle, connecting block and grinding head body are sequentially coaxial arrangement;Connecting block includes first connecting block and second connecting block, second connecting block is equipped in the lower end of first connecting block, and connecting block is equipped with the through hole that passes through first connecting block and second connecting block;Grinding head body is equipped with accommodating groove, accommodating groove extends from the side of grinding head body to the other side in depth direction, accommodating groove sequentially includes first recess, second chamber and third chamber from top to bottom, by the utility model, effectively solve the technical problems, such as insufficient cooling lubricant supply, poor debris drainage and temperature easy to accumulate during the grinding and polishing process of existing grinding head.

Description

Technical Field

[0001] This utility model relates to the field of processing machinery technology, and more specifically, to a polishing grinding head. Background Technology

[0002] In industrial processing and production, polishing heads are widely used tools, often used to finish the surface of workpieces to achieve specific smoothness or shape accuracy.

[0003] Traditional grinding and polishing heads typically employ a solid, one-piece structure, with shapes usually simple, such as cylindrical, spherical, conical, or disc-shaped. Some products may have shallow, narrow, interlocking textures on their surface. While these heads have a simple structure, in actual use, the lack of effective internal fluid guidance and drainage channels makes it difficult to adequately and continuously deliver externally supplied cooling lubricant and abrasive to the contact interface between the grinding head and the workpiece. Simultaneously, fine debris generated during grinding and polishing cannot be promptly removed and tends to accumulate in the processing area. These problems collectively lead to low grinding head efficiency, increased frictional resistance and load, the risk of high-temperature burning due to heat accumulation in the processing area caused by poor heat dissipation, and reduced processing quality due to debris blockage.

[0004] Although there are some existing technologies that create grooves or notches on the end face of the grinding head to improve chip removal, these structures still mainly rely on externally sprayed coolant and cannot achieve self-supply and active guidance of abrasive and coolant. Their chip removal and cooling effects are still limited. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a polishing grinding head that effectively solves the technical problems of insufficient cooling and lubricating fluid supply, poor debris discharge, and easy temperature accumulation in existing grinding heads during the grinding and polishing process by constructing a complete drainage channel system inside the grinding head.

[0006] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method: A polishing head includes a shank and a head body fixedly connected to the shank. The head body is fixedly connected to the lower end of the shank. A connecting block is provided at the lower end of the shank. The shank, connecting block, and head body are arranged coaxially in sequence. The connecting block includes a first connecting block and a second connecting block. The second connecting block is located at the lower end of the first connecting block. A through hole is provided on the connecting block, passing through the first and second connecting blocks. A receiving groove is provided on the head body. The receiving groove extends from one side of the head body to the other side in the depth direction. The receiving groove includes a first recess, a second chamber, and a third chamber from top to bottom. The first connecting block is located in the second chamber and is connected to the inner wall of the second chamber; the second connecting block is located in the third chamber and is connected to the inner wall of the third chamber.

[0007] This invention utilizes a through-hole on the connecting block as an effective drainage hole, allowing water, air, polishing fluid, and cooling lubricant to enter the contact surface between the grinding head and the workpiece. The first recess on the grinding head body serves as a liquid storage area, where water, polishing fluid, and cooling lubricant can be added during use. These media then flow through the through-hole to the contact surface between the grinding head body and the workpiece, thereby effectively increasing the grinding and polishing efficiency of the grinding head.

[0008] Preferably, the inner diameter of the first recess is larger than that of the second chamber, and the inner diameter of the second chamber is larger than that of the third chamber.

[0009] Preferably, the through hole includes a first through hole and a second through hole, the first through hole and the second through hole are connected; one end of the first through hole is located on the upper surface of the first connecting block, and one end of the second through hole is located on the lower surface of the second connecting block.

[0010] By using this utility model, the through hole is set as a first through hole and a second through hole. The medium added in the first recess enters the first through hole, flows through the second through hole, and then flows to the contact surface between the grinding head body and the workpiece. The through hole is divided into two sections, which are adapted to the shape of the receiving groove of the connecting block and the grinding head body, making the overall structural design more reasonable and achieving better technical results.

[0011] Preferably, the number of first through holes is greater than the number of second through holes.

[0012] In this invention, the medium added to the first recess enters the first through hole, flows through the second through hole, and then flows to the contact surface between the grinding head body and the workpiece. Since the inner diameter of the first recess is larger than the second chamber, that is, the inner diameter of the first recess is larger than the diameter of the first connecting block, the larger number of first through holes facilitates the rapid and uniform flow of the medium in the first recess. The medium then flows downwards through the second through holes, which are located in the center of the lower surface of the grinding head body. After flowing out of the second through holes, the medium diffuses outwards under the centrifugal force generated by the high-speed rotation of the grinding head. Due to the negative pressure of the second recess and the second through holes, the medium is continuously drawn into the upper opening of the first through hole. Therefore, the number of second through holes is relatively small, achieving a centralized liquid supply effect.

[0013] Preferably, the plurality of first through holes are evenly distributed along the circumference of the first connecting block, and the inclination direction of each first through hole is toward the convergence direction of the second through holes, so as to form a centripetal inclined guide channel.

[0014] By designing the first through hole as an inclined through hole, and having multiple first through holes evenly distributed around the first connecting block and inclined towards the convergence point of the second through hole, when the grinding head rotates at high speed, the medium in the first recess can quickly converge towards the second through hole along the inclined first through hole under the action of centrifugal force, avoiding the medium from stagnating in the through hole. At the same time, the guiding effect of the inclined angle makes the medium flow path more in line with the direction of centrifugal force, further improving the smoothness and efficiency of the flow, and ensuring that polishing fluid or cooling lubricant can be delivered to the working surface of the grinding head in a timely and uniform manner.

[0015] Preferably, the bottom surface of the first recess is flush with the upper surface of the first connecting block.

[0016] This invention enables the first recess to form a flat bottom surface, thereby avoiding dead corners caused by differences in bottom surface height, ensuring that the medium in the first recess can fully flow into the first through hole. At the same time, it simplifies the structure at the first recess and the first connecting block, and improves the component positioning accuracy and assembly efficiency during the assembly process when producing polishing grinding heads.

[0017] Preferably, the receiving groove also includes a second recess located below the third chamber. The second recess is truncate, and its inner diameter gradually increases in the direction away from the third chamber. The upper inner diameter of the second recess is consistent with the lower inner diameter of the third chamber.

[0018] Through this utility model, the inner wall of the second concave part of the platform forms a gradual flow guiding structure, which can evenly diffuse the medium flowing out from the second through hole to the surrounding area, avoiding the medium from concentrating and impacting a local area of ​​the grinding head body; at the same time, the gradual inner diameter design reduces the resistance of medium flow, reduces the generation of turbulence, and ensures that the medium flows smoothly to the working surface of the grinding head, further improving the uniformity of cooling, lubrication and chip removal.

[0019] Preferably, the lower end face of the grinding head body is provided with a plurality of grooves extending radially or circumferentially thereon.

[0020] Through this invention, multiple grooves form a channel for the media and debris to pass through. The media diffuses through the second groove and enters the groove, and can be directly transported to the contact interface between the grinding head and the workpiece. At the same time, the debris generated during polishing can be quickly discharged along the groove with the media, avoiding the accumulation of debris at the contact interface, reducing scratches on the processed surface, and reducing the wear of the grinding head.

[0021] Preferably, multiple grooves are evenly distributed along the radial or circumferential direction of the grinding head body to form a groove texture.

[0022] This invention allows for the creation of various groove textures, including grid-type, radial, and spiral groove textures. Different shapes can be adapted to different processing scenarios. For example, radial groove textures facilitate rapid chip removal under centrifugal force, making them suitable for high-speed polishing; spiral groove textures extend the residence time of the media on the grinding head surface, improving cooling and lubrication; and grid-type groove textures enable comprehensive media coverage, making them suitable for large-area uniform polishing. The uniformly distributed design ensures consistent media supply and chip removal efficiency across all areas of the grinding head's working surface, guaranteeing stable processing accuracy.

[0023] Preferably, an adhesive layer is provided between the grinding head shank and the grinding head body.

[0024] According to this invention, the adhesive layer can be made of epoxy resin or polyurethane to enhance the connection between the grinding head shank and the grinding head body, and prevent relative loosening during high-speed rotation. At the same time, the adhesive layer can fill the connection gap between the grinding head shank and the grinding head body, prevent the medium from leaking out of the gap, and ensure the sealing of the internal drainage channel. In addition, the adhesive layer can also buffer the vibration of the grinding head during operation and improve the stability of the processing.

[0025] This invention features a first recess with a liquid storage function, a through hole, a second recess, and a groove with a flow guiding function. Water, air, polishing fluid, and cooling lubricant can all enter the contact surface between the grinding head body and the workpiece through the through hole. When the grinding head body rotates at high speed, water, air, polishing fluid, and cooling lubricant can all enter the first through hole from the first recess, flow through the second through hole, and then through the grooves on the surface of the grinding head body. Under the centrifugal force generated by the high-speed rotation of the grinding head body, they flow at high speed, increasing the supply of abrasive and cooling lubricant to the polishing contact surface, and carrying away the tiny debris generated during polishing. This improves the polishing efficiency of the grinding head, effectively reduces friction and load, avoids high-temperature burning due to temperature accumulation, and ensures that the debris generated during polishing can be discharged in a timely and effective manner to prevent blockage. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a polishing head in this embodiment.

[0027] Figure 2 This is a schematic diagram of the groove texture of a polishing head in this embodiment. Detailed Implementation

[0028] To further understand the content of this utility model, a detailed description of the utility model is provided in conjunction with the embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the utility model.

[0029] like Figure 1-2As shown, this embodiment provides a polishing head, which includes a grinding head shank 110 and a grinding head body 120 fixedly connected to the grinding head shank 110. The grinding head body 120 is fixedly connected to the lower end of the grinding head shank 110. A connecting block 130 is provided at the lower end of the grinding head shank 110. The grinding head shank 110, the connecting block 130, and the grinding head body 120 are arranged coaxially in sequence. The connecting block 130 includes a first connecting block and a second connecting block. The second connecting block is located at the lower end of the first connecting block. A through hole is provided on the connecting block 130 that passes through the first connecting block and the second connecting block. A receiving groove is provided on the grinding head body 120. The receiving groove extends from one side of the grinding head body 120 to the other side in the depth direction. The receiving groove includes a first recess 141, a second chamber 142, and a third chamber 143 from top to bottom. The first connecting block is located in the second chamber 142 and is connected to the inner wall of the second chamber 142; the second connecting block is located in the third chamber 143 and is connected to the inner wall of the third chamber 143.

[0030] In this embodiment, the through hole provided on the connecting block 130 serves as an effective drainage hole, through which water, air, grinding and polishing fluid, cooling and lubricating fluid, etc., can enter the contact surface between the grinding head and the workpiece. The first recess 141 provided on the grinding head body 120 can serve as a liquid storage area. During use, water, grinding and polishing fluid, and cooling and lubricating fluid can be added to the first recess 141. These media then flow through the through hole to the contact surface between the grinding head body 120 and the workpiece, thereby effectively increasing the efficiency and technical effect of grinding and polishing.

[0031] In this embodiment, the inner diameter of the first recess 141 is larger than that of the second chamber 142, and the inner diameter of the second chamber 142 is larger than that of the third chamber 143.

[0032] The through hole includes a first through hole 151 and a second through hole 152, with the first through hole 151 communicating with the second through hole 152; one end of the first through hole 151 is located on the upper surface of the first connecting block, and one end of the second through hole 152 is located on the lower surface of the second connecting block.

[0033] In this embodiment, the through holes are set as a first through hole 151 and a second through hole 152. The medium added in the first recess 141 enters the first through hole 151, flows through the second through hole 152, and then flows to the contact surface between the grinding head body 120 and the workpiece. The through hole is divided into two sections, which are adapted to the shape of the connecting block and the receiving groove of the grinding head body 120, making the overall structural design more reasonable and technically effective.

[0034] In this embodiment, the number of first through holes 151 is greater than the number of second through holes 152.

[0035] In this embodiment, the medium added to the first recess 141 enters the first through hole 151, flows through the second through hole 152, and then flows to the contact surface between the grinding head body 120 and the workpiece. Since the inner diameter of the first recess 141 is larger than the second chamber 142, that is, the inner diameter of the first recess 141 is larger than the diameter of the first connecting block, the larger number of first through holes 151 facilitates the rapid and uniform flow of the medium in the first recess 141. The medium then flows downwards through the second through hole 152, which is located in the center of the lower surface of the grinding head body 120. After flowing out of the second through hole 152, the medium diffuses outwards under the centrifugal force generated by the high-speed rotation of the grinding head. Therefore, the number of second through holes 152 is relatively small, achieving a concentrated liquid supply effect.

[0036] In this embodiment, a plurality of first through holes are evenly distributed along the circumference of the first connecting block, and the inclination direction of each first through hole 151 is toward the convergence direction of the second through hole 152, so as to form a centripetally inclined guide channel.

[0037] In this embodiment, by designing the first through hole 151 as an inclined through hole, and having multiple first through holes 151 evenly distributed circumferentially along the first connecting block and inclined towards the convergence point of the second through hole 152, when the grinding head rotates at high speed, the medium in the first recess 141 can quickly converge towards the second through hole 152 along the inclined first through hole 151 under the action of centrifugal force, avoiding the medium from stagnating in the through hole. At the same time, by utilizing the guiding effect of the inclined angle, the medium flow path is made to better conform to the direction of centrifugal force, further improving the smoothness and efficiency of the flow, and ensuring that polishing fluid or cooling lubricant can be delivered to the working surface of the grinding head in a timely and uniform manner.

[0038] In this embodiment, the bottom surface of the first recess 141 is flush with the upper surface of the first connecting block.

[0039] This embodiment enables the first recess 141 to form a flat bottom surface, thereby avoiding dead corners caused by the difference in bottom surface height, ensuring that the medium in the first recess 141 can fully flow into the first through hole 151. At the same time, it simplifies the structure of the first recess 141 and the first connecting block, and improves the component positioning accuracy and assembly efficiency during the assembly process when producing polishing grinding heads.

[0040] In this embodiment, the receiving groove also includes a second recess 144 located below the third chamber 143. The second recess 144 is truncate, and its inner diameter gradually increases in the direction away from the third chamber 143. The lower inner diameter of the second recess 144 is consistent with the upper inner diameter of the third chamber 143.

[0041] In this embodiment, the inner wall of the second recess 144 of the platform forms a gradient flow guiding structure, which can evenly diffuse the medium flowing out from the second through hole 152 to the surrounding area, avoiding the medium from concentrating and impacting a local area of ​​the grinding head body 120; at the same time, the gradient inner diameter design reduces the resistance of medium flow, reduces turbulence generation, and ensures that the medium flows smoothly to the working surface of the grinding head, further improving the uniformity of cooling, lubrication and chip removal.

[0042] In this embodiment, the lower end face of the grinding head body 120 is provided with a plurality of grooves 160 extending radially or circumferentially thereon.

[0043] In this embodiment, multiple grooves 160 form a channel for the media and debris to pass through. The media diffuses through the second recess 144 and enters the groove 160, which can be directly delivered to the contact interface between the grinding head and the workpiece. At the same time, the debris generated during polishing can be quickly discharged along the groove 160 with the media, avoiding the accumulation of debris at the contact interface, reducing scratches on the processed surface, and reducing the wear of the grinding head.

[0044] In this embodiment, multiple grooves 160 are evenly distributed along the radial or circumferential direction of the grinding head body 120, forming a groove texture together.

[0045] In this embodiment, the groove texture can be set to various shapes, including grid-type groove texture, radial groove texture, and spiral groove texture. Different shapes of groove texture can be adapted to different processing scenarios. For example, radial groove texture is conducive to achieving rapid chip removal under centrifugal force and is suitable for high-speed polishing; spiral groove texture can prolong the residence time of the media on the surface of the grinding head body 120, improving the cooling and lubrication effect; grid-type groove texture is conducive to achieving all-round media coverage and is suitable for large-area uniform polishing. The uniform distribution design ensures that the media supply and chip removal efficiency are consistent in all areas of the grinding head working surface, ensuring the stability of processing accuracy.

[0046] In this embodiment, an adhesive layer is provided between the grinding head shank 110 and the grinding head body 120.

[0047] In this embodiment, the adhesive layer can be made of epoxy resin or polyurethane to enhance the connection between the grinding head shank 110 and the grinding head body 120, preventing relative loosening during high-speed rotation. At the same time, the adhesive layer can fill the connection gap between the grinding head shank 110 and the grinding head body 120, preventing the medium from leaking out of the gap and ensuring the sealing of the internal drainage channel. In addition, the adhesive layer can also buffer the vibration of the grinding head during operation, improving the stability of the processing.

[0048] This embodiment features a first recess 141 with a liquid storage function, a through hole, a second recess 144, and a groove 160 with a flow guiding function. Water, air, polishing fluid, and cooling lubricant can all enter the contact surface between the grinding head body 120 and the workpiece through the through hole. When the grinding head body 120 rotates at high speed, water, air, polishing fluid, and cooling lubricant can all enter the first through hole 151 through the first recess 141, flow through the second through hole 152, and then through the grooves on the surface of the grinding head body 120. Under the centrifugal force generated by the high-speed rotation of the grinding head body 120, the fluids flow at high speed, increasing the supply of abrasive and cooling lubricant to the polishing contact surface and carrying away the tiny debris generated during polishing. This improves the polishing efficiency of the grinding head, effectively reduces friction and load, avoids high-temperature burning due to temperature accumulation, and ensures that the debris generated during polishing can be discharged in a timely and effective manner to prevent blockage.

[0049] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.

[0050] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the embodiments shown are only part of the embodiments of the present invention. The actual structure is not limited to this. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A polishing head, comprising a head shank (110) and a head body (120) fixedly connected to the head shank (110), characterized in that: The grinding head body (120) is fixedly connected to the lower end of the grinding head shank (110). The lower end of the grinding head shank (110) is provided with a connecting block (130). The grinding head shank (110), the connecting block (130) and the grinding head body (120) are arranged coaxially in sequence. The connecting block (130) includes a first connecting block and a second connecting block. The second connecting block is located at the lower end of the first connecting block. The connecting block (130) is provided with a through hole that passes through the first connecting block and the second connecting block. The grinding head body (120) is provided with a receiving groove. The receiving groove extends from one side of the grinding head body (120) to the other side in the depth direction. The receiving groove includes a first recess (141), a second chamber (142) and a third chamber (143) from top to bottom. The first connecting block is located in the second chamber (142) and is connected to the inner wall of the second chamber (142); the second connecting block is located in the third chamber (143) and is connected to the inner wall of the third chamber (143).

2. A polishing head according to claim 1, characterized in that: The through hole includes a first through hole (151) and a second through hole (152), the first through hole (151) and the second through hole (152) are connected; one end of the first through hole (151) is located on the upper surface of the first connecting block, and one end of the second through hole (152) is located on the lower surface of the second connecting block.

3. A polishing head according to claim 1, characterized in that: The number of first through holes (151) is greater than the number of second through holes (152).

4. A polishing head according to claim 1, characterized in that: The bottom surface of the first recess (141) is flush with the upper surface of the first connecting block.

5. A polishing head according to claim 1, characterized in that: The receiving groove also includes a second recess (144) located below the third chamber (143). The second recess (144) is truncated, and its inner diameter gradually increases in the direction away from the third chamber (143). The upper inner diameter of the second recess (144) is consistent with the lower inner diameter of the third chamber (143).

6. A polishing head according to claim 1, characterized in that: The lower end face of the grinding head body (120) is provided with a plurality of grooves (160) extending radially or circumferentially thereon.

7. A polishing head according to claim 6, characterized in that: Multiple grooves (160) are evenly distributed along the radial or circumferential direction of the grinding head body (120) to form a groove texture.

8. A polishing head according to claim 1, characterized in that: An adhesive layer is provided between the grinding head shank (110) and the grinding head body (120).

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