Polishing and over-cutting prevention cutter for badminton racket

Abstract

The invention provides a badminton racket anti-grinding over-cutting cutter, and belongs to the technical field of grinding cutters, the badminton racket anti-grinding over-cutting cutter comprises a plurality of cutters and a plurality of guide wheels, the cutters and the guide wheels are coaxially and fixedly arranged, each cutter comprises a first milling cutter and a second milling cutter, each guide wheel comprises a lantern ring and a stepped shaft, and the second milling cutter is fixed at the lower part of the first milling cutter. The lantern ring is fixed between the first milling cutter and the second milling cutter, the stepped shaft is fixed on the lower portion of the second milling cutter, the two milling cutters are equal in outer diameter, a second shaft of the stepped shaft is equal to the lantern ring in outer diameter, and the second shaft of the stepped shaft and the lantern ring are slightly larger than the first milling cutter and the second milling cutter in outer diameter, so that guiding during cutter machining can be achieved, and workpieces are not damaged. The first milling cutter, the second milling cutter, the lantern ring and the stepped shaft are all made of high-hardness tungsten steel alloy with the same hardness, the first milling cutter and the second milling cutter are combined for use, burrs at different positions on the same side can be ground at a time, and the device has the advantages of being high in production efficiency, high in yield, high in reliability and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding tools, and more particularly, to a tool for preventing over-grinding of a badminton racket. Background Art

[0002] At present, badminton racket frames made of carbon fiber material on the market are formed by injection molding with a mold. After molding, burrs will be formed at the mold joint of the racket frame. Generally, traditional tools are used to grind and remove the burrs. However, since the thickness of the burrs is inconsistent, they cannot be automatically ground clean in one pass, and the tool is likely to damage the racket frame when grinding thin and small positions. Summary of the Invention

[0003] The purpose of the present invention is to provide a tool for preventing over-grinding of a badminton racket in view of the above problems existing in the prior art. The technical problem to be solved by the present invention is how to achieve one-time clean grinding without damaging the badminton racket frame, thereby improving production efficiency and the yield rate.

[0004] The purpose of the present invention can be achieved by the following technical solutions: A tool for preventing over-grinding of a badminton racket includes a plurality of tools and a plurality of guide wheels. The tools and the guide wheels are coaxially and fixedly arranged.

[0005] Further, the tool includes a first milling cutter and a second milling cutter. The guide wheel includes a collar and a stepped shaft. The second milling cutter is fixed below the first milling cutter. The collar is fixed between the first milling cutter and the second milling cutter. The stepped shaft is fixed below the second milling cutter.

[0006] Further, the first milling cutter includes a first cutting part and a first counterbore provided below the first cutting part. The second milling cutter includes a second cutter shaft, a second cutting part provided below the second cutter shaft, and a second counterbore provided below the second cutting part. A through hole is provided on the collar. First arc portions are respectively provided at both ends of the collar. The stepped shaft includes a first shaft, a second shaft provided below the first shaft, and a second arc portion provided on the end face on one side of the first shaft.

[0007] Further, the second cutter shaft is inserted into the first counterbore and is in interference fit with the first counterbore. The first shaft is inserted into the second counterbore and is in interference fit with the second counterbore. The second cutter shaft passes through the through hole and is in interference fit with the through hole.

[0008] Further, the outer diameters of the first cutting part and the second cutting part are equal. The outer diameter of the collar is equal to that of the second shaft. The outer diameter of the collar is slightly larger than the outer diameter of the first cutting part.

[0009] Further, the first milling cutter, the second milling cutter, the collar, and the stepped shaft are all made of high-hard tungsten steel alloy with the same hardness material.

[0010] The beneficial effects of the present invention are as follows: The outer diameter of the collar is slightly larger than that of the first cutting part, so that the first arc part on the collar guides the first cutting part, thereby realizing the processing guidance of the burrs at the symmetrical position; The outer diameter of the second shaft is slightly larger than that of the two cutting parts, so that the second arc part on the stepped shaft guides the first cutting part and the second cutting part, thereby realizing the processing guidance of the two burrs; The yield rate of grinding is improved through guided processing; By moving the tool once, the burrs at different positions on the same side can be ground, improving the production efficiency; The tool and the guide wheel are made of high-hard tungsten steel alloy with the same hardness material, which can improve the reliability of the guide wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a three-dimensional structural schematic diagram of the present tool.

[0012] Figure 2 is an exploded three-dimensional structural schematic diagram of the present tool.

[0013] Figure 3 is a three-dimensional structural schematic diagram of the present tool for grinding the two burrs on the outer side of the badminton racket frame.

[0014] Figure 4 is a three-dimensional structural schematic diagram of the present tool for grinding the burr on the inner side of the badminton racket frame.

[0015] Figure 5 is a cross-sectional view of the present tool for grinding the two burrs on the outer side of the badminton racket frame.

[0016] Figure 6 is a cross-sectional view of the present tool for grinding the burr on the inner side of the badminton racket frame.

[0017] Figure 7 is Figure 5 a partial enlarged view of

[0018] Figure 8 is Figure 6 a partial enlarged view of

[0019] In the figure, 1. First milling cutter; 11. First cutter shaft; 12. First cutting part; 13. First counterbore; 2. Second milling cutter; 21. Second cutter shaft; 22. Second cutting part; 23. Second counterbore; 3. Collar; 31. Through hole; 32. First arc part; 4. Stepped shaft; 41. First shaft; 42. Second shaft; 43. Second arc part; 5. Carbon fiber badminton racket frame; 51. Frame body; 52. Third arc part; 53. Fourth arc part; 54. Concave part; 55. First burr; 56. Second burr; 57. Third burr; 58. Fifth arc part; 59. Fourth burr. DETAILED DESCRIPTION OF THE INVENTION

[0020] The following are specific embodiments of the present invention in combination with the drawings, and the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0021] As shown Figures 1 - 2 in the figure, it includes a first milling cutter 1, a second milling cutter 2 fixed to the lower part of the first milling cutter 1, a collar 3 fixed between the first milling cutter 1 and the second milling cutter 2, and a stepped shaft 4 fixed to the lower part of the second milling cutter 2. Among them, the first milling cutter 1 includes a first cutter shaft 11, a first cutter part 12 arranged at the lower part of the first cutter shaft 11, and a first counterbore 13 arranged at the lower part of the first cutter part 12. The first milling cutter 1 is used for grinding the first burr 55, the second burr 56 and the fourth burr 58 as shown Figure 3 in the figure. The first counterbore 13 is used for fixing the second milling cutter 2 and is in interference fit with the second milling cutter 2. The second milling cutter 2 includes a second cutter shaft 21, a second cutter part 22 arranged at the lower part of the second cutter shaft 21, and a second counterbore 23 arranged at the lower part of the second cutter part 22. The second milling cutter 2 is used for grinding the third burr 57 as shown Figure 3 in the figure. The second counterbore 23 is used for fixing the stepped shaft 4 and is in interference fit with the stepped shaft 4. A through hole 31 is provided on the collar 3, and first arc portions 32 are respectively provided at both ends of the collar 3. The collar 3 is used for guiding when the first milling cutter 1 works. The through hole 31 is penetrated by the second milling cutter 2 and is in interference fit with the second milling cutter 2 to realize the fixation of the collar 3 and the second milling cutter 2. The first arc portion 32 contacts the third arc portion 52 or the fifth arc portion 58 as shown Figure 3 in the figure to realize the guiding of the first milling cutter 1. The stepped shaft 4 includes a first shaft 41, a second shaft 42 arranged at the lower part of the first shaft 41, and a second arc portion 43 arranged on the end face on one side of the first shaft 41. The second shaft 42 is in interference fit with the second counterbore 23 to realize the fixation of the stepped shaft 4 and the second milling cutter 2. The second arc portion 43 contacts the fourth arc portion 53 as shown Figure 3 in the figure to realize the guiding of the first milling cutter 1 and the second milling cutter 2. The outer diameters of the first cutter part 12 and the second cutter part (22) are equal, the outer diameter of the collar 3 is equal to that of the second shaft 42, and the outer diameter of the collar 3 is slightly larger than the outer diameter of the first cutter part 12, which can realize the guiding of the tool grinding. The first milling cutter 1, the second milling cutter 2, the collar 3 and the stepped shaft 4 are all made of high-hard tungsten steel alloy with the same hardness material, which can improve the reliability of the guiding.

[0022] When grinding the outer burrs, as shown Figure 3 and Figure 5 and Figure 7As shown, first lower the rotating tool and elastically attach it to the outer side of the frame 51 on the carbon fiber badminton racket frame 5 and near the racket rod. The first milling cutter 1 grinds against the starting point of the first burr 55 on the outer side of the frame 51. The first arc portion 32 on the collar 3 contacts the third arc portion 52 on the carbon fiber badminton racket frame 5. Move the tool along the outer ring of the frame 51 and keep the first arc portion 32 in contact with the third arc portion 52. After grinding the first burr 55, continue to move the tool so that the second arc portion 43 on the stepped shaft 4 contacts the fourth arc portion 53 on the lower outer side of the carbon fiber badminton racket frame 5. Move the tool along the outer ring of the frame 51 and keep the second arc portion 43 in contact with the fourth arc portion 53. After grinding the second burr 56 and the third burr 57, continue to move the tool. The first arc portion 32 on the collar 3 contacts the third arc portion 52 on the carbon fiber badminton racket frame 5. Move the tool along the outer ring of the frame 51 and keep the first arc portion 32 in contact with the third arc portion 52. After grinding the first burr 55 on the other side, the outer burr grinding is completed, and the tool returns to its original position. When grinding the outer burrs, as Figure 6 and Figure 6 and Figure 8 shown, first lower the rotating tool and elastically attach it to the inner side of the frame 51 on the carbon fiber badminton racket frame 5. The first milling cutter 1 starts grinding against the fourth burr 59 on the inner side of the frame 51. The first arc portion 32 on the collar 3 contacts the fifth arc portion 58 on the lower inner side of the carbon fiber badminton racket frame 5. Move the tool one circle along the inner ring of the frame 51 and keep the first arc portion 32 in contact with the fifth arc portion 58. After grinding the fourth burr 59, one carbon fiber badminton racket frame 5 is completed.

[0023] Using a combination of tools and guide wheels like this, either increasing or decreasing, or changing the diameter size relationship between the tool and the guide wheel, can also be used for other processing methods such as grinding workpieces with parallel or concentric trajectories.

[0024] The advantages are as follows: By using the fact that the outer diameter of the collar 3 is slightly larger than the outer diameter of the first cutting part 12 and the first arc part 32 on the collar 3 contacts the third arc part 52 at the lower outer side of the carbon fiber badminton racket frame 5, the guiding for the first milling cutter 1 when grinding the first burr 55 is realized; By using the fact that the outer diameter of the second shaft 42 on the stepped shaft 4 is slightly larger than the outer diameters of the first cutting part 12 and the second cutting part 22 and the second arc part 43 on the stepped shaft 4 contacts the fourth arc part 53 at the lower outer side of the carbon fiber badminton racket frame 5, the guiding for the first milling cutter 1 when grinding the second burr 56 and the second milling cutter 2 when grinding the third burr 57 is realized simultaneously; By using the fact that the outer diameter of the collar 3 is slightly larger than the outer diameter of the first cutting part 12 and the first arc part 32 on the collar 3 contacts the fifth arc part 58 at the lower inner side of the carbon fiber badminton racket frame 5, the guiding for the first milling cutter 1 when grinding the fourth burr 59 is realized; The yield rate of grinding is improved by guiding the grinding tool; By moving the tool once, the burrs at different positions on the same side can be ground, improving the grinding efficiency; The first milling cutter 1, the second milling cutter 2, the collar 3 and the stepped shaft 4 are made of high-hard tungsten steel alloy with the same hardness material, which can improve the reliability of the guiding performance of the collar 3 and the stepped shaft 4.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A badminton racket anti-grinding overcutting tool, characterized in that: The utility model comprises a plurality of cutting tools and a plurality of guide wheels, wherein the cutting tools and the guide wheels are coaxial and fixedly arranged.

2. A badminton racket anti-overcutting tool according to claim 1, characterized in that: The tool comprises a first milling cutter (1) and a second milling cutter (2); the guide wheel comprises a collar (3) and a stepped shaft (4); the second milling cutter (2) is fixed to the lower part of the first milling cutter (1); the collar (3) is fixed between the first milling cutter (1) and the second milling cutter (2); and the stepped shaft (4) is fixed to the lower part of the second milling cutter (2).

3. A badminton racket anti-overcutting tool according to claim 2, characterized in that: The first milling cutter (1) comprises a first cutter portion (12) and a first countersunk hole (13) arranged at the bottom of the first cutter portion (12); the second milling cutter (2) comprises a second cutter shaft (21), a second cutter portion (22) arranged at the bottom of the second cutter shaft (21), and a second countersunk hole (23) arranged at the bottom of the second cutter portion (22); a through hole (31) is provided on the collar (3); first arc portions (32) are respectively provided at both ends of the collar (3); and the stepped shaft (4) comprises a first shaft (41), a second shaft (42) arranged at the bottom of the first shaft (41), and a second arc portion (43) arranged at an end surface close to one side of the first shaft (41).

4. A badminton racket anti-overcutting tool according to claim 3, characterized in that: The second knife shaft (21) is inserted into the first counterbore (13) and is interference-fitted with the first counterbore (13); the first shaft (41) is inserted into the second counterbore (23) and is interference-fitted with the second counterbore (23); and the second knife shaft (21) passes through the through hole (31) and is interference-fitted with the through hole (31).

5. A badminton racket anti-overcutting tool according to claim 3, characterized in that: The first blade portion (12) and the second blade portion (22) have the same outer diameter, the sleeve ring (3) and the second shaft (42) have the same outer diameter, and the sleeve ring (3) has a slightly larger outer diameter than the first blade portion (12).

6. A badminton racket anti-overcutting tool according to claim 2, characterized in that: The first milling cutter (1), the second milling cutter (2), the collar (3) and the stepped shaft (4) are all made of a high-hardness tungsten steel alloy of the same hardness material.

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