Polishing device

Abstract

The utility model belongs to the technical field of polishing equipment, and discloses a polishing device. The polishing device comprises a rack, a clamping mechanism and a polishing mechanism. The clamping mechanism is arranged on the rack and comprises a fixing piece, and the fixing piece is used for fixing a workpiece so that an inner hole of the workpiece can be formed in the vertical direction. The polishing mechanism is arranged on the machine frame and comprises a polishing grinding wheel, the axis of the polishing grinding wheel is arranged in the vertical direction, and the polishing grinding wheel can move in the vertical direction and rotate around the axis of the polishing grinding wheel and can extend into the inner hole of the workpiece fixed by the fixing piece so as to achieve inner hole polishing. The workpiece is fixed through the fixing piece in the clamping mechanism, compared with a mode of manually holding the workpiece, the automation degree is high, the labor intensity of workers can be reduced, and the production efficiency can be improved. The polishing grinding wheel in the polishing mechanism extends into the inner hole of the workpiece to polish the inner hole, the automation degree is high, the labor intensity of workers can be reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing equipment, in particular to a polishing device. Background Art

[0002] In mechanical manufacturing, inner hole polishing is an important process for improving the quality and precision of the inner hole surface. It is used to remove burrs, corners and unevenness on the inner hole wall to make the inner hole surface smooth and uniform, thereby providing better sealing, lubricity and wear resistance.

[0003] In the prior art, workers typically polish the inner bores of small workpieces, such as pipe joints, manually. Specifically, the worker holds an electric grinder with one hand and the workpiece with the other, inserting the grinding wheel into the workpiece's inner bore to polish the inner bore. However, this manual process is labor-intensive and inefficient.

[0004] Therefore, the above problems need to be solved urgently. Utility Model Content

[0005] The purpose of the utility model is to provide a polishing device to improve the degree of automation of inner hole polishing operations, thereby reducing the labor intensity of workers and improving production efficiency.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A polishing device for polishing the inner hole of a workpiece, comprising:

[0008] frame;

[0009] a clamping mechanism, disposed on the frame, the clamping mechanism comprising a fixing member, the fixing member being used to fix the workpiece so that the inner hole of the workpiece is arranged in a vertical direction;

[0010] A polishing mechanism is arranged on the frame, and the polishing mechanism includes a polishing wheel. The axis of the polishing wheel is arranged in the vertical direction. The polishing wheel can move in the vertical direction and rotate around its own axis. The polishing wheel can extend into the inner hole of the workpiece fixed by the fixing member to achieve inner hole polishing.

[0011] Preferably, a plurality of the fixing members are provided, a plurality of the polishing grinding wheels are provided correspondingly, and the plurality of the polishing grinding wheels correspond one-to-one to the plurality of the fixing members.

[0012] Preferably, the plurality of fixing members are arranged in a row along a preset direction, and the fixing members are provided in two rows;

[0013] The clamping mechanism further comprises:

[0014] A bearing member is rotatably arranged on the frame in a vertical direction, and two rows of fixing members are symmetrically arranged on the bearing member;

[0015] A rotating assembly is provided on the frame and is configured to drive the bearing member to rotate so that there is always a row of the fixing members corresponding to the polishing mechanism.

[0016] Preferably, a plurality of the clamping mechanisms are provided, and the number of the polishing mechanisms corresponds to the number of the clamping mechanisms.

[0017] Preferably, the polishing device further comprises a polishing liquid supply mechanism, and the polishing liquid supply mechanism is used to supply polishing liquid into the inner hole of the workpiece.

[0018] Preferably, the rotating assembly includes:

[0019] A driving cylinder is provided on the frame;

[0020] a transmission rack connected to the piston rod of the driving cylinder;

[0021] A transmission gear is coaxially arranged on the rotating shaft of the carrier, and the transmission gear is meshed with the transmission rack.

[0022] Preferably, the rotating assembly further comprises a limiting member provided on the supporting member, and the limiting member is configured to abut against the frame after the supporting member rotates through a preset angle.

[0023] Preferably, the fixing member includes:

[0024] A clamping cylinder comprising two clamping jaws that can move closer to or away from each other, wherein the two clamping jaws can clamp and fix the workpiece;

[0025] The rotary pressing cylinder comprises a pressing part that can rotate and rise and fall, wherein the pressing part is used to press the workpiece fixed by the clamping cylinder, and an avoidance hole is vertically penetrated through the pressing part to avoid the inner hole of the workpiece.

[0026] Preferably, the polishing mechanism includes:

[0027] A moving part is slidably arranged on the frame in a vertical direction;

[0028] a first driving member, disposed on the frame, configured to drive the moving member to slide;

[0029] A polishing shaft is rotatably mounted on the moving part, and the polishing wheel is detachably mounted on the lower end of the polishing shaft;

[0030] The second driving member is provided on the moving member, and the second driving member is configured to drive the polishing shaft to rotate.

[0031] Preferably, the polishing mechanism further comprises a limit sensor provided on the moving part, and the limit sensor is located at the end of the travel of the moving part.

[0032] Beneficial effects of the utility model:

[0033] 1. The polishing device provided by the utility model fixes the workpiece through the fixing parts in the clamping mechanism. Compared with the method of manually holding the workpiece, it has a high degree of automation, can reduce the labor intensity of workers, and can improve production efficiency.

[0034] 2. The polishing device provided by the utility model extends the polishing wheel in the polishing mechanism into the inner hole of the workpiece to polish the inner hole. Compared with the polishing method in the prior art in which the grinding wheel of the electric grinding head is manually extended into the inner hole of the workpiece, the degree of automation is high, the labor intensity of workers can be reduced, and production efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the polishing device provided by the utility model;

[0036] Figure 2 It is a structural diagram of the clamping mechanism provided by the utility model;

[0037] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0038] Figure 4 This is a schematic diagram of the structure of the polishing mechanism provided by the utility model Figure 1 ;

[0039] Figure 5 This is a schematic diagram of the structure of the polishing mechanism provided by the utility model Figure 2 .

[0040] In the picture:

[0041] 100. Workpiece;

[0042] 1. Frame;

[0043] 2. Clamping mechanism; 21. Fixing member; 211. Clamping cylinder; 2111. Clamping claw; 212. Rotating pressing cylinder; 2121. Pressing portion; 22. Carrying member; 23. Rotating assembly; 231. Driving cylinder; 232. Transmission rack; 233. Transmission gear; 234. Limiting member;

[0044] 3. Polishing mechanism; 31. Polishing grinding wheel; 32. Polishing liquid supply mechanism; 321. Lubricating oil supply system; 33. Moving parts; 34. First driving part; 35. Polishing shaft; 36. Second driving part; 37. Limit sensor. DETAILED DESCRIPTION

[0045] Before any embodiments of the present application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the foregoing drawings.

[0046] In this application, the terms "comprises," "includes," "has," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0047] In this application, the term "and / or" is a description of the association relationship between related objects, indicating that three relationships can exist. For example, a centrifugal vortex magnetic pump and / or a centrifugal vortex magnetic pump can represent three situations: the existence of a centrifugal vortex magnetic pump alone, the existence of a centrifugal vortex magnetic pump and a centrifugal vortex magnetic pump at the same time, and the existence of a centrifugal vortex magnetic pump alone. In addition, the character " / " in this application generally indicates that the related objects are in an "and / or" relationship.

[0048] In this application, the terms "connect," "combine," "couple," and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without an intermediary, and an indirect connection refers to two parts or components being connected to at least one intermediary, with the two parts or components being connected via the intermediary. Furthermore, "connect" and "couple" are not limited to physical or mechanical connections or couplings and may include electrical connections or couplings.

[0049] In this application, it will be understood by those skilled in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerance caused by manufacturing, assembly, use, etc. associated with a specific value. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0050] In this application, it will be understood by those skilled in the art that the function performed by an assembly can be performed by one assembly, multiple assemblies, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one assembly, or a combination of multiple parts.

[0051] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to the other element "upper" or "lower", but also be indirectly connected to the other element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, below can include directly below, lower left, lower right, lower front and lower back, etc.

[0052] See also Figures 1 to 5 , this embodiment provides a polishing device for polishing the inner hole of a workpiece 100. The polishing device includes a frame 1, a clamping mechanism 2, and a polishing mechanism 3. The clamping mechanism 2 is arranged on the frame 1, and the clamping mechanism 2 includes a fixing member 21, and the fixing member 21 is used to fix the workpiece 100 so that the inner hole of the workpiece 100 is arranged in a vertical direction. The polishing mechanism 3 is arranged on the frame 1, and the polishing mechanism 3 includes a polishing grinding wheel 31, and the axis of the polishing grinding wheel 31 is arranged in the vertical direction. The polishing grinding wheel 31 can move in the vertical direction and rotate around its own axis, and the polishing grinding wheel 31 can extend into the inner hole of the workpiece 100 fixed by the fixing member 21 to achieve inner hole polishing.

[0053] It is understood that, compared to manually holding the workpiece 100, the fixing member 21 in the clamping mechanism 2 fixes the workpiece 100, which is highly automated, can reduce the labor intensity of workers, and can improve production efficiency. It is also understood that, compared to the polishing method in the prior art in which the grinding wheel of the electric grinding head is manually inserted into the inner hole of the workpiece 100 to polish the inner hole, the polishing wheel 31 in the polishing mechanism 3 extends into the inner hole of the workpiece 100, which is highly automated, can reduce the labor intensity of workers, and can improve production efficiency.

[0054] It should be noted that, in this embodiment, the workpiece 100 is a pipe joint, that is, the inner hole polishing operation in this embodiment is to polish the inner wall of the pipe joint.

[0055] Generally speaking, in the prior art, workpieces 100 are typically mass-produced using automated production lines, resulting in high production speeds. Therefore, to ensure that the polishing efficiency of the polishing device matches the production speed of the workpieces 100 on the automated production line, a plurality of fixtures 21 are provided, and a corresponding plurality of polishing wheels 31 are provided, with the multiple polishing wheels 31 corresponding one-to-one to the multiple fixtures 21. This arrangement enables simultaneous internal hole polishing of multiple workpieces 100, resulting in high production efficiency.

[0056] To further improve the efficiency of the polishing apparatus, multiple fixed elements 21 are arranged in a row along a predetermined direction, with two rows of fixed elements 21 provided. The clamping mechanism 2 also includes a carrier 22 and a rotating assembly 23. The carrier 22 is mounted on the frame 1 for rotation about a vertical axis, with two rows of fixed elements 21 symmetrically positioned on the carrier 22. The rotating assembly 23 is mounted on the frame 1 and is configured to drive the carrier 22 to rotate, ensuring that one row of fixed elements 21 always corresponds to the polishing mechanism 3.

[0057] It is understandable that by providing two rows of fixing members 21, while a workpiece 100 fixed by one row of fixing members 21 is being polished, the other row of fixing members 21 is loading and unloading the workpiece 100, thereby effectively shortening the time for loading and unloading the workpiece 100, thereby helping to further improve the production efficiency of the polishing device. It should be noted that in this embodiment, the two rows of fixing members 21 are arranged on opposite sides of the carrier 22, and the rotating assembly 23 drives the carrier 22 to rotate 180 degrees each time so that the positions of the two rows of fixing members 21 can be swapped. Of course, in other embodiments, the rotation angle of the carrier 22 corresponds to the distribution position setting of the two rows of fixing members 21, such as 120 degrees, 90 degrees, etc., so it will not be described in detail.

[0058] Specifically, the rotating assembly 23 includes a drive cylinder 231, a transmission rack 232, and a transmission gear 233. The drive cylinder 231 is mounted on the frame 1. The transmission rack 232 is connected to the piston rod of the drive cylinder 231. The transmission gear 233 is coaxially mounted on the rotating shaft of the support member 22 and meshes with the transmission rack 232. It will be appreciated that the drive cylinder 231 drives the support member 22 through the transmission structure formed by the transmission rack 232 and the transmission gear 233, resulting in high transmission efficiency, smooth transmission, and high transmission precision.

[0059] To enable the rotating assembly 23 to accurately change the positions of the two rows of fixing members 21, the rotating assembly 23 further includes a stopper 234 disposed on the support member 22. The stopper 234 is configured to abut against the frame 1 after the support member 22 rotates a preset angle. In this embodiment, the preset angle is 180 degrees.

[0060] In addition, in order to further improve the operating efficiency of the polishing device, a plurality of clamping mechanisms 2 are provided, and the number of polishing mechanisms 3 is provided corresponding to the number of clamping mechanisms 2. In this embodiment, two clamping mechanisms 2 and two polishing mechanisms 3 are provided.

[0061] It is worth noting that spraying polishing liquid on the machined surface of the workpiece 100 during the polishing process can improve the smoothness and surface quality of the machined surface of the workpiece 100. Accordingly, the polishing device also includes a polishing liquid supply mechanism 32, which is used to supply polishing liquid into the inner hole of the workpiece 100.

[0062] It should be noted that the polishing liquid supply mechanism 32 is prior art. For example, the polishing liquid supply mechanism 32 includes a storage box for storing the polishing liquid, a recovery system for recovering the polishing liquid, and a separation system for separating impurities, which will not be described in detail. It should also be noted that in order to further improve the polishing quality, a polishing liquid supply mechanism 32 with a lubricating oil supply system 321 can be selected to add lubricating oil to the polishing liquid to reduce the friction between the polishing wheel 31 and the machined surface of the workpiece 100, thereby obtaining a smooth polished surface. Of course, the structure and working principle of the lubricating oil supply system 321 are prior art. The lubricating oil supply system 321 is used to provide the polishing liquid supply mechanism 32 with circulated and cooled lubricating oil, which will not be described in detail here.

[0063] It is worth noting that the accuracy of the position of the fixing member 21 fixing the workpiece 100 has a huge impact on the polishing quality. Therefore, in the present embodiment, the fixing member 21 includes a clamping cylinder 211 and a rotary pressing cylinder 212. The clamping cylinder 211 includes two clamping jaws 2111 that can approach or separate from each other, and the two clamping jaws 2111 can clamp and fix the workpiece 100. The rotary pressing cylinder 212 includes a clamping portion 2121 that can rotate and lift, and the clamping portion 2121 is used to clamp the workpiece 100 fixed by the clamping cylinder 211. A avoidance hole is vertically penetrated on the clamping portion 2121 to avoid the inner hole of the workpiece 100. With such an arrangement, the workpiece 100 is fixed by the clamping cylinder 211 and the rotary pressing cylinder 212, and the accuracy of the position of the fixed workpiece 100 can be guaranteed. It should be noted that the specific models of the clamping cylinder 211 and the rotary pressing cylinder 212 can be selected according to the actual working scenario, and this embodiment does not impose specific requirements or restrictions on this. Of course, the two clamping jaws 2111 of the clamping cylinder 211 and the pressing portion 2121 of the rotary pressing cylinder 212 need to be customized according to the shape and size of the workpiece 100, which will not be detailed here.

[0064] Specifically, the polishing mechanism 3 includes a moving member 33, a first driving member 34, a polishing shaft 35, and a second driving member 36. The moving member 33 is slidably mounted on the frame 1 in a vertical direction. The first driving member 34 is mounted on the frame 1 and is configured to drive the moving member 33 to slide. The polishing shaft 35 is rotatably mounted on the moving member 33, and the polishing wheel 31 is detachably mounted on the lower end of the polishing shaft 35. The second driving member 36 is mounted on the moving member 33 and is configured to rotate the polishing shaft 35. It should be noted that the first driving member 34 can be any linear drive structure in the prior art, such as a linear module, an electric cylinder, etc. In this embodiment, the first driving member 34 adopts a drive structure consisting of a servo motor and a ball screw module, which will not be described in detail. It should also be noted that the second driving member 36 can be any rotary drive structure in the prior art, such as a rotary motor, etc. In this embodiment, the second driving member 36 adopts a drive structure consisting of a servo motor and a transmission belt, which will not be described in detail.

[0065] To limit the maximum sliding distance of the moving member 33, the polishing mechanism 3 also includes a limit sensor 37 disposed on the moving member 33, located at the end of the travel of the moving member 33. Specifically, the controller controlling the first drive member 34 controls the travel of the moving member 33 based on the sensor signal from the limit sensor 37. It can be understood that the limit sensor 37 limits the maximum sliding distance of the moving member 33, providing a high degree of automation. It should be noted that the model of the limit sensor 37 is selected based on the actual application scenario, such as a detection camera, a photoelectric sensor, etc., and this embodiment does not impose specific requirements or restrictions on this.

[0066] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A polishing device for polishing the inner hole of a workpiece (100), characterized in that: include: Rack (1); A clamping mechanism (2) is arranged on the frame (1), the clamping mechanism (2) comprising a fixing member (21), the fixing member (21) being used to fix the workpiece (100) so that the inner hole of the workpiece (100) is arranged in a vertical direction; A polishing mechanism (3) is arranged on the frame (1), and the polishing mechanism (3) includes a polishing grinding wheel (31). The axis of the polishing grinding wheel (31) is arranged in a vertical direction. The polishing grinding wheel (31) can move in the vertical direction and rotate around its own axis. The polishing grinding wheel (31) can extend into the inner hole of the workpiece (100) fixed by the fixing member (21) to achieve inner hole polishing.

2. A polishing device according to claim 1, characterized in that: There are a plurality of fixing members (21), and a plurality of polishing wheels (31) are correspondingly provided, and the plurality of polishing wheels (31) correspond one to one to the plurality of fixing members (21).

3. A polishing device according to claim 2, characterized in that: The plurality of fixing members (21) are arranged in a row along a preset direction, and the fixing members (21) are provided in two rows; The clamping mechanism (2) further comprises: A bearing member (22) is arranged on the frame (1) so as to rotate about a vertical direction, and two rows of fixing members (21) are symmetrically arranged on the bearing member (22); A rotating assembly (23) is provided on the frame (1), and the rotating assembly (23) is configured to drive the carrier (22) to rotate so that there is always a row of the fixing members (21) corresponding to the polishing mechanism (3).

4. A polishing device according to claim 1, characterized in that: A plurality of the clamping mechanisms (2) are provided, and the number of the polishing mechanisms (3) corresponds to the number of the clamping mechanisms (2).

5. A polishing device according to claim 1, characterized in that: The polishing device further comprises a polishing liquid supply mechanism (32), and the polishing liquid supply mechanism (32) is used to supply polishing liquid into the inner hole of the workpiece (100).

6. A polishing device according to claim 3, characterized in that: The rotating assembly (23) comprises: A driving cylinder (231) is arranged on the frame (1); A transmission rack (232) connected to the piston rod of the driving cylinder (231); A transmission gear (233) is coaxially arranged on the rotating shaft of the carrier (22), and the transmission gear (233) is meshed with the transmission rack (232).

7. A polishing device according to claim 6, characterized in that: The rotating assembly (23) further includes a limiting member (234) provided on the supporting member (22), wherein the limiting member (234) is used to abut against the frame (1) after the supporting member (22) rotates at a preset angle.

8. A polishing device according to claim 1, characterized in that: The fixing member (21) comprises: A clamping cylinder (211) comprising two clamping jaws (2111) capable of moving closer to or away from each other, wherein the two clamping jaws (2111) are capable of clamping and fixing the workpiece (100); The rotary pressing cylinder (212) comprises a pressing portion (2121) capable of rotating and lifting, wherein the pressing portion (2121) is used to press the workpiece (100) fixed by the clamping cylinder (211), and a avoidance hole is vertically penetrated through the pressing portion (2121) to avoid the inner hole of the workpiece (100).

9. A polishing device according to claim 1, characterized in that: The polishing mechanism (3) comprises: A moving part (33) is slidably arranged on the frame (1) in a vertical direction; A first driving member (34) is provided on the frame (1), and the first driving member (34) is configured to drive the moving member (33) to slide; A polishing shaft (35) is rotatably mounted on the moving member (33), and the polishing wheel (31) is detachably mounted on the lower end of the polishing shaft (35); A second driving member (36) is provided on the moving member (33), and the second driving member (36) is configured to drive the polishing shaft (35) to rotate.

10. A polishing device according to claim 9, characterized in that: The polishing mechanism (3) further comprises a limit sensor (37) provided on the moving part (33), wherein the limit sensor (37) is located at the end of the travel of the moving part (33).

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