A round hole grinding round structure

Abstract

The application discloses a round hole grinding round structure, which comprises a positioning plate and a grinding rod rotating through the positioning plate, one end of the grinding rod is a connecting head, a grinding block is embedded on the side wall of the other end of the grinding rod, the grinding block has a grinding round part protruding to the outside of the side wall of the grinding rod, a cavity is arranged in the grinding rod along an axial line, a guide pipe is connected to the positioning plate and communicates with the cavity, a plurality of guide holes are arranged on the grinding rod and communicate the inside and outside of the cavity, and all the guide holes and the grinding block are located on the same side of the positioning plate. The application solves the problem that the accumulation of debris in the prior art will interfere with subsequent grinding.

Description

Technical Field

[0001] This invention relates to the field of auxiliary devices for round hole processing, and in particular to a round hole grinding structure. Background Technology

[0002] Drilling is a machining process that involves creating holes in a workpiece using a drill rod, such as drilling circular through holes (i.e., round holes) into a metal sheet. After drilling, the inner wall of the round hole often needs to be rounded to make it smooth. This is usually done using a grinding device, which typically includes a grinding rod and a grinding block fixed to the grinding rod. The grinding rod is driven by a motor to rotate. During operation, the grinding rod extends into the round hole, and the motor drives the grinding rod to rotate, causing the grinding block to contact and rub against the inner wall of the round hole, ultimately smoothing the inner wall. In actual machining, debris is generated during grinding. If this debris is not removed from the round hole in time, the accumulated debris will interfere with the continued grinding process. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a circular hole grinding structure that solves the problem that debris accumulation in existing technologies interferes with subsequent grinding.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A circular hole grinding structure includes a positioning plate and a grinding rod that rotates through the positioning plate. One end of the grinding rod is a connector, and the other end has a grinding block detachably connected to its side wall. The grinding block has a rounded portion protruding beyond the side wall of the grinding rod. A cavity is provided inside the grinding rod along its axis, and an inlet pipe communicating with the cavity is connected to the positioning plate. The grinding rod also has several outlet holes communicating with the inside and outside of the cavity, and all outlet holes and the grinding block are located on the same side of the positioning plate. This solution provides a cavity inside the grinding rod, allowing liquid or gas to be introduced into the cavity through the inlet pipe and then discharged into the circular hole through the outlet holes. Therefore, it can promptly remove the generated debris from the circular hole, preventing debris accumulation and solving the problem in the prior art where debris accumulation interferes with subsequent grinding.

[0006] Furthermore, the grinding block extends along the length of the grinding rod and has a grinding surface with an arc-shaped cross-section, and the grinding surface is recessed along the length direction with a first groove.

[0007] Furthermore, the grinding block is connected to the grinding rod by a fastener, and the fastener is located in the first groove.

[0008] Furthermore, the grinding surface is also recessed with multiple second grooves parallel to the first groove.

[0009] Furthermore, the grinding block and the grinding rod are respectively provided with multiple first through holes and multiple second through holes, the first through holes and the second through holes are interconnected and connect the second groove and the cavity.

[0010] Furthermore, the positioning plate is provided with a rotating hole for the grinding rod to pass through and an annular groove surrounding the rotating hole and connected to the rotating hole. The inlet pipe is connected to the annular groove, and the grinding rod is also provided with a channel connecting the annular groove and the cavity.

[0011] Furthermore, the cavity has a variable diameter structure, with the end with the larger inner diameter being closer to the annular groove.

[0012] Furthermore, the inner diameter of the end of the outlet hole that connects to the cavity is larger than that of the other end.

[0013] Furthermore, the positioning plate has a recessed annular platform surrounding the rotating hole on the side facing the connector, and the grinding rod is fixed with an annular plate that rotates with the annular platform.

[0014] Furthermore, the ring plate is fixed with an annular sliding bar that surrounds the grinding rod, and the annular platform is recessed with a sliding groove for the sliding bar to slide.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] Liquid or gas can be introduced into the cavity inside the grinding rod through the inlet tube. The liquid or gas is then discharged from the outlet hole into the round hole, thus carrying away the generated debris in a timely manner and preventing debris from accumulating in the round hole. This solves the problem in the prior art where debris accumulation interferes with subsequent grinding. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0018] Figure 2 This is a schematic diagram of the grinding block structure in this embodiment;

[0019] Figure 3 for Figure 1 A magnified schematic diagram of the local structure at point A in the middle.

[0020] The reference numerals in the accompanying drawings include:

[0021] 1. Grinding rod, 2. Connector, 3. Grinding block, 4. Positioning plate, 5. Round hole, 6. Workpiece, 7. Cavity, 8. Inlet pipe, 9. Outlet hole, 10. First groove, 11. Fastener, 12. Second groove, 13. First through hole, 14. Second through hole, 15. Plug, 16. Ring groove, 17. Channel, 18. Ring plate, 19. Sliding bar, 20. Base plate, 21. Back plate, 22. Top plate, 23. Support rod. Detailed Implementation

[0022] The present invention will be further described in detail below through specific embodiments:

[0023] like Figure 1-3 As shown, this solution provides a circular hole grinding structure, which, like the prior art, includes a grinding rod 1. One end of the grinding rod 1 is a connector 2 for connecting to a driving component (such as a drive motor in the prior art). The other end of the grinding rod 1 is fitted with a grinding block 3 extending along its length. The difference from the prior art is that a positioning plate 4 is rotatably sleeved on the grinding rod 1. After the grinding rod 1 extends into the circular hole 5 to be ground, the positioning plate 4 covers the circular hole 5 on the workpiece 6. The grinding rod 1 can rotate relative to the positioning plate 4 (the positioning plate 4 and the workpiece 6 can be fixed together by a clamping device so that the positioning plate 4 is fixed relative to the workpiece 6 during operation). That is, the positioning plate 4 can be fixed relative to the circular hole 5. The rotation of the grinding rod 1 enables grinding. Furthermore, a cavity 7 is provided inside the grinding rod 1, and an inlet tube 8 that communicates with the cavity 7 is fixed on the positioning plate 4. The grinding rod 1 is also provided with multiple outlet holes 9 that communicate with the cavity 7. All outlet holes 9 and the grinding block 3 are located inside the circular hole 5. In this way, liquid / gas can be introduced into the cavity 7 through the inlet tube 8, and then introduced into the circular hole 5 through the outlet holes 9. In this way, the liquid / solid can carry the generated debris out of the circular hole 5 during grinding, so that the debris will not be trapped in the circular hole 5, thus making the grinding smooth and improving the grinding efficiency. This solves the problem that the accumulation of debris will interfere with the subsequent grinding in the prior art.

[0024] like Figure 1-3As shown, in a further embodiment, the cavity 7 extends along the length of the grinding rod 1, with a larger inner diameter at the end near the connector 2. This allows the introduced liquid / gas to be gradually pressurized and pass through the outlet hole 9 at a higher speed. More specifically, the outlet hole 9 can also have a larger inner diameter at the end facing the cavity 7, further pressurizing the liquid / gas during its exit from the outlet hole 9. In a specific embodiment, the outlet hole 9 can also be inclined towards or away from the positioning plate 4, thus allowing the exported liquid or gas to pass through more efficiently. The material is sprayed at an angle onto the inner wall of the circular hole 5, which increases the efficiency of carrying debris. Alternatively, it can be perpendicular to the axis of the cavity 7. In practice, the circular hole 5 can be arranged vertically, while the outlet hole 9 is tilted away from the positioning plate 4 to more efficiently remove debris. Furthermore, a recessed groove is provided on the wall of the grinding rod 1, into which the grinding block 3 is fitted. The grinding surface extends beyond the groove and is arc-shaped. When the grinding rod 1 is running, the grinding surface contacts the inner wall of the circular hole 5 to achieve grinding. Further details... Yes, a first groove 10 extending along the length of the grinding rod 1 is recessed on the grinding surface. A fastener 11 is provided in the first groove 10 to fix the grinding block 3 in the fitting groove (e.g., a single-ended bolt is used to connect the grinding rod 1 and the grinding block 3, with the nut of the single-ended bolt located in the first groove 10). During operation, the first groove 10 can also allow debris to pass through efficiently, thereby contacting the liquid / gas (or the liquid / gas can enter and contact the debris). A groove parallel to the first groove 10 is also provided on the grinding surface of the grinding block 3. Multiple second grooves 12, similar to the first groove 10, provide a place and channel for liquid / gas and debris to come into contact. At the same time, both the first groove 10 and the second groove 12 can contact the inner wall of the circular hole 5, thereby playing a scraping role and making the grinding more efficient. More specifically, the first groove 10 can be deeper and wider than the second groove 12. Both ends of them contact the end face of the grinding block 3 and are located outside the fitting groove. Furthermore, the second grooves 12 can be symmetrical to both sides of the first groove 10.

[0025] like Figure 1-3 As shown, the grinding block 3 and the grinding rod 1 are respectively provided with multiple first through holes 13 and multiple second through holes 14. The first through holes 13 and the second through holes 14 are interconnected and connect the second groove 12 and the cavity 7. Liquid / gas can also enter the second groove 12 through the first through holes 13 and the second through holes 14, so that it can directly contact the grinding surface and carry the debris more efficiently. At the same time, this can also work with the grinding surface to make the grinding more efficient (especially when using liquid). Similar first through holes 13 and second through holes 14 can also be added in the first groove 10. The end of the cavity 7 opposite to the connector 2 can also be open, but the opening is blocked by a plug 15. The plug 15 can be threaded to the opening and can be removed for subsequent maintenance.

[0026] like Figure 1 and 3 As shown in the detailed scheme, the positioning plate 4 is provided with a rotating hole for the grinding rod 1 to pass through and an annular groove 16 surrounding the rotating hole and connected to it. The inlet pipe 8 is connected to the annular groove 16. The grinding rod 1 is also provided with a channel 17 connecting the annular groove 16 and the cavity 7. During operation, the grinding rod 1 rotates, that is, the channel 17 also rotates. There can be multiple channels 17. Although there may be liquid / gas leakage between the grinding rod 1 and the positioning plate 4 (that is, between the grinding rod 1 and the annular groove 16), most of the liquid / gas will still enter the channel 17 and enter the cavity 7. At the same time, when the positioning plate 4 is connected to the... One side of the connector 2 is recessed and has an annular platform surrounding the rotating hole. The grinding rod 1 is fixed with an annular plate 18 that rotates with the annular platform. The annular plate 18 makes the rotation of the grinding rod 1 more stable. At the same time, a rotation seal can be set between the annular plate 18 and the annular platform to reduce (or avoid) leakage of liquid / air at this point. In this way, more of the leakage of liquid / air will enter the cavity 7 downwards. More specifically, the annular plate 18 is fixed with an annular sliding strip 19 surrounding the grinding rod 1. The annular platform is recessed and has a sliding groove for the sliding strip 19 to slide. That is, the sliding groove and the sliding strip 19 serve as a rotation seal.

[0027] like Figure 1 As shown, in a more detailed scheme, the clamping components may include a base plate 20, a back plate 21, and a top plate 22, which are connected to each other to form a U-shaped structure. In use, the base plate 20 contacts the bottom surface of the workpiece 6, and the top plate 22 is located above the positioning plate 4. The top plate 22 is also threadedly connected to a stop rod 23. After the stop rod 23 rotates downward, it abuts against the positioning plate 4, thus fixing the positioning plate 4 on the workpiece 6. More specifically, a notch may be recessed on the positioning plate 4 for the end of the stop rod 23 to rotate and abut into, so that the positioning of the positioning plate 4 is more stable. Furthermore, two stop rods 23 can be used to cooperate to further fix the positioning plate 4 and the workpiece 6 relative to each other.

[0028] like Figure 1 and 3 As shown, during grinding, the middle part of the grinding surface mainly contacts the inner wall of the round hole 5. The distance between the second groove 12, which is located further away from the first groove 10 on both sides, and the inner wall of the round hole 5 is also further away. This makes the middle part of the grinding surface mainly play a grinding role, while the grinding surfaces on both sides are mainly for liquid / gas to come into efficient contact with debris.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A round hole grinding structure, characterized in that, The device includes a positioning plate and a grinding rod that rotates through the positioning plate. One end of the grinding rod is a connector, and the other end has a grinding block detachably connected to its side wall. The grinding block has a rounded part that protrudes out of the side wall of the grinding rod. A cavity is provided inside the grinding rod along its axis, and an inlet tube communicating with the cavity is connected to the positioning plate. The grinding rod also has several outlet holes communicating with the inside and outside of the cavity, and all outlet holes and the grinding block are located on the same side of the positioning plate.

2. The round hole grinding structure as described in claim 1, characterized in that, The grinding block extends along the length of the grinding rod and has a grinding surface with an arc-shaped cross-section. The grinding surface has a first groove recessed along its length.

3. The round hole rounding structure as described in claim 2, characterized in that, The grinding block is connected to the grinding rod by a fastener, and the fastener is located in the first groove.

4. The round hole rounding structure as described in claim 2, characterized in that, The grinding surface is also recessed with multiple second grooves parallel to the first groove.

5. The round hole rounding structure as described in claim 4, characterized in that, The grinding block and the grinding rod are also provided with multiple first through holes and multiple second through holes, which are interconnected and connect the second groove and the cavity.

6. The round hole grinding structure as described in claim 1, characterized in that, The positioning plate is provided with a rotating hole for the grinding rod to pass through and an annular groove surrounding the rotating hole and connected to the rotating hole. The inlet pipe is connected to the annular groove, and the grinding rod is also provided with a channel connecting the annular groove and the cavity.

7. The round hole grinding structure as described in claim 6, characterized in that, The cavity has a variable diameter structure, with the end with the larger inner diameter being close to the annular groove.

8. The round hole grinding structure as described in claim 7, characterized in that, The inner diameter of the end of the outlet hole that connects to the cavity is larger than that of the other end.

9. The round hole rounding structure as described in claim 6, characterized in that, The positioning plate has a recessed annular platform surrounding the rotating hole on the side facing the connector, and the grinding rod is fixed with an annular plate that rotates with the annular platform.

10. The round hole rounding structure as described in claim 9, characterized in that, The ring plate is fixed with an annular sliding bar that surrounds the grinding rod, and the annular platform is recessed with a sliding groove for the sliding bar to slide.

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