Multifunctional nail art polishing head and its manufacturing method

Abstract

This application relates to the field of nail art tools and discloses a multi-functional nail art polishing head and a manufacturing method thereof, including a bit and a shank. The bit has a circumferential sidewall with a plurality of first spiral grooves formed at intervals, and a rack formed between each pair of adjacent first spiral grooves. A radial cross-section of the bit defines a plurality of groups of large tooth segments, each consisting of a plurality of racks, along the circumferential direction of the bit. Within each group of large tooth segments, the arrangement density of the racks varies from sparse to dense, from dense to sparse, or alternates between dense and sparse along the circumferential direction of the bit. A manufacturing method for a multi-functional nail art polishing head is also disclosed, including steps S1 of machining the bit and the shank, S2 of forming a plurality of first spiral grooves, and S3 of forming a plurality of second spiral grooves. By using blades with different arrangement densities for grinding, rough grinding and fine grinding can be performed simultaneously with the bit, eliminating the need to continually replace the nail art polishing head and making it easier for users to remove nail art accessories with different hardnesses.

Description

[Technical Field]

[0001] TECHNICAL FIELD This application relates to the field of nail art tools, and more particularly to a multi-function nail art polishing head and a method for producing the same. [Background technology]

[0002] As people's quality of life continues to improve, the beauty industry is also experiencing rapid development, and the requirements for beauty products are becoming increasingly higher, and nail art is no exception. As the number of nail art patterns and styles increases, it is becoming increasingly difficult for existing nail art polishing heads to meet the market demand for better shaping effects and convenience.

[0003] Currently, nail art polishing heads include a fixedly connected bit and shank, and the shank is removably and fixedly mounted within the nail art device. The nail art device drives and rotates the bit with the shank, which polishes and removes nail art accessories (such as hard gel, soft gel, and base coat). The bit has multiple polishing teeth that are spaced apart and are inclined along the direction of rotation of the bit. Bits with different tooth spacing are used for different polishing situations. For polishing heads with the same outer diameter, a smaller tooth spacing means a larger number of teeth and less sharpness during use, making them suitable for precision machining and small-volume grinding. A larger tooth spacing means a smaller number of teeth and greater sharpness during use, making them suitable for rough machining and large-volume grinding.

[0004] When removing nail art accessories, users often need to first perform rough grinding with a polishing head with wide tooth spacing, then change the nail art polishing head and perform fine grinding with a polishing head with narrow tooth spacing. Only after doing this can hard gel, soft gel, and base coat be removed. However, this method requires users to keep changing nail art polishing heads, which can be inconvenient for removal. Summary of the Invention [Problem to be solved by the invention]

[0005] The present application provides a multi-functional nail art polishing head and a manufacturing method thereof to allow users to easily remove nail art accessories with different hardness. [Means for solving the problem]

[0006] In a first aspect, the multi-function nail art polishing head provided in the present application uses the following technical solution: A multifunctional nail art polishing head includes a bit and a shank, wherein a plurality of first spiral grooves are opened at intervals on the circumferential side wall of the bit, and a rack is formed between each two adjacent first spiral grooves of the bit, and a plurality of groups of large tooth segments, each consisting of a plurality of racks, are formed in the radial cross section of the bit along the circumferential direction of the bit, and in one group of the large tooth segments, the arrangement density of the racks varies from sparse to dense, or from dense to sparse, or the sparse and dense patterns intersect along the circumferential direction of the bit.

[0007] By using the above technical solution, when using the nail art polishing head to process and grind, the nail art equipment uses the shank to drive and rotate the bit, and the bit drives and rotates multiple groups of large tooth segments, and the arrangement density of the racks in each group of large tooth segments is different, so that the bit can simultaneously perform rough grinding and fine grinding, and further, there is no need to keep replacing the nail art polishing head, and users can easily remove nail art accessories with different hardness.

[0008] Preferably, a plurality of second spiral grooves are opened at intervals on the circumferential side wall of the bit, the spiral direction of the second spiral grooves is opposite to the spiral direction of the first spiral groove, one rack is divided into a plurality of blades by the plurality of second spiral grooves, and each of the blades is arranged symmetrically with respect to a line connecting its own cutting edge to the bit axis center.

[0009] By using the above technical solution, one rack is divided into multiple blades by the second spiral groove, the cutting edge length of the rack is shortened, the grinding chips are smaller, and the second spiral groove makes it easier to discharge the chips. In addition, the blades are arranged symmetrically along the symmetric line, so the bit can grind in a reciprocating motion.

[0010] Preferably, one group of large tooth segments includes multiple groups of small tooth segments arranged in sequence, and each of the small tooth segments consists of several racks, the pitch of two adjacent racks in each group of small tooth segments is the same, and the arrangement density of racks of different small tooth segments is different.

[0011] By using the above technical solution, when each group of large tooth segments rotates and grinds, multiple groups of small tooth segments with different arrangement densities are ground in sequence, and the length of any one group of small tooth segments, including small tooth segments with different lengths, is determined by the number of racks in that group. Longer small tooth segments with sparse rack arrangement densities can improve the degree of rough grinding, while longer small tooth segments with dense rack arrangement densities can improve the degree of fine grinding, thereby adjusting the degree of rough grinding or fine grinding in each group of large tooth segments, and further improving the applicability of the nail art polishing head.

[0012] Preferably, the number of racks corresponding to the small tooth segments in different large tooth segments is the same, and the arrangement rules of different large tooth segments are the same.

[0013] By using the above technical solution, the arrangement density and the number of small tooth segment racks in each group of large tooth segments are all the same, so that the grinding effect of the large tooth segments in multiple groups is the same, and further, the grinding efficiency of the nail art polishing head can be improved.

[0014] Preferably, a support portion is formed on a side wall of the blade close to the first spiral groove so as to protrude outward, and the support portion is provided along the spiral direction of the first spiral groove.

[0015] By using the above technical solution, the support part increases the structural strength of the blade, so that the blade is sharper and less susceptible to damage.

[0016] Preferably, the tooth height of the rack increases as the sparseness of the rack increases, and the tooth height of the rack decreases as the density of the rack increases.

[0017] By using the above technical solutions, the larger the pitch between the blades, the larger the tooth height of the blades and the wider the root of the blades, thereby making the structural strength of the blades higher.

[0018] Preferably, the cross section of the first spiral groove has an inverted staircase shape.

[0019] By using the above technical solution, the width of the tooth gap between adjacent blades is increased by the inverted step-shaped first spiral groove, which makes it difficult for grinding debris to get caught in the first spiral groove and makes it easier to clean the debris in the first spiral groove after using the nail art polishing head.

[0020] Preferably, the pitch between two adjacent racks is proportional to the depth of the first spiral groove.

[0021] By using the above technical solution, the larger the pitch between two adjacent racks, the deeper the first spiral groove between two adjacent racks, so that the tooth height of the blade is higher, which improves the structural strength of the blade and makes the blade less susceptible to damage during rough grinding.

[0022] Preferably, the included angle between the spiral directions of the first spiral groove and the second spiral groove is 30 to 120°.

[0023] In a second aspect, the present application provides a method for producing a multi-function nail art polishing head, which uses the following technical solutions: A method for producing a multifunctional nail art polishing head includes step S1 of processing the shank and bit into a stepped shape using the multifunctional nail art polishing head, and step S2 of opening a plurality of first spiral grooves in the bit and forming a plurality of racks in the bit.

[0024] By using the above technical solution, the nail art polishing head is manufactured by first drilling a plurality of first spiral grooves in the bit using a machine tool, thereby improving the production efficiency of the nail art polishing head.

[0025] Preferably, in step S2, in S2.1, a plurality of No. 1 spiral grooves are opened at equal intervals along the circumferential direction of the bit to form a plurality of racks, and the plurality of racks are divided into a plurality of groups of large tooth segments; in S2.2, a plurality of racks in one group of large tooth segments constitute a plurality of groups of small tooth segments, and the first small tooth segment is composed of several racks; in S2.3, in the second small tooth segment, a No. 2 spiral groove is opened every time one rack is covered, and the depth of the No. 2 spiral groove is greater than that of the No. 1 spiral groove. In S2.4, in the third small tooth segment, a No. 3 spiral groove is opened every time two racks are covered, and the depth of the No. 3 spiral groove is greater than that of the No. 2 spiral groove. In S2.5, referring to steps S2.3 and S2.4, the machining of one group of large tooth segments is completed, and No. 4 spiral groove, No. 5 spiral groove, etc. with greater tooth groove depth are opened until multiple groups of small tooth segments are arranged orderly or randomly along the circumferential direction of the bit. In S2.6, steps S2.3 to S2.5 are repeated to machine the remaining large tooth segments.

[0026] By using the above technical solution, first open the No. 1 spiral groove to form multiple racks of the same size, and then open the No. 2 spiral groove, No. 3 spiral groove, etc. based on the multiple racks, so that racks with different arrangement densities and tooth heights can be machined on the bit more accurately and quickly.

[0027] Preferably, in steps S2.3 to S2.5, after the No. 2 spiral groove, No. 3 spiral groove, and No. 4 spiral groove are opened, support portions are formed on the side walls of the blade on both sides of the spiral grooves.

[0028] By using the above technical solution, after opening the No. 2 spiral groove, the No. 3 spiral groove, and the No. 4 spiral groove, it is possible to form support parts on the side walls of the blade on both sides of the spiral groove, which makes it easier to process the bit.

[0029] Preferably, the method further includes step S3 of drilling a plurality of second spiral grooves in the bit, the second spiral grooves intersecting the first spiral grooves.

[0030] By using the above technical solution, one rack is divided into multiple blades by the second spiral groove, and the length of the cutting edge of the rack is shortened, so that the grinding waste is smaller, and the second spiral groove makes it easier to discharge the waste. [Effects of the Invention]

[0031] In summary, the present application has at least one beneficial technical effect as follows: 1. By using the bit to drive and rotate the blades with different arrangement densities, the bit can simultaneously perform rough grinding and precision grinding, eliminating the need to keep replacing the nail art polishing head, which makes it easier for users to remove nail art accessories with different hardness. 2. A large tooth segment is composed of multiple groups of small tooth segments, and when the large tooth segments of each group rotate and grind, the multiple groups of small tooth segments with different arrangement densities grind in turn, and the length of any one group of small tooth segments, and small tooth segments of different lengths, are determined by the number of racks in that group, thereby adjusting the degree of rough grinding or fine grinding of the large tooth segments of each group, and further improving the applicability of the nail art polishing head. 3. By using the inverted-step first spiral groove, the width of the tooth gap between adjacent blades is increased, which makes it less likely for grinding debris to become trapped in the first spiral groove and makes it easier to clean the debris in the first spiral groove after using the nail art polishing head. [Brief explanation of the drawings]

[0032] [Figure 1] 1 is a schematic diagram of the overall structure of a multifunctional nail art polishing head in Example 1 of the present application. [Figure 2] 1 is a cross-sectional view showing a state in which a first spiral groove is opened in a bit of a multifunctional nail art polishing head in Example 1 of the present application. FIG. [Figure 3]FIG. 10 is a cross-sectional view showing a state in which a first spiral groove is opened in a bit of a multifunctional nail art polishing head according to a second embodiment of the present invention. [Figure 4] FIG. 10 is a cross-sectional view showing a state in which a first spiral groove is opened in a bit of a multifunctional nail art polishing head according to a third embodiment of the present invention. [Figure 5] FIG. 10 is a schematic diagram showing different bit shapes projecting from the multifunctional nail art polishing head in Example 4 of the present application. [Figure 6] 10 is a flowchart of a method for producing a multi-functional nail art polishing head in Example 5 of the present application. [Figure 7] 10 is a detailed flowchart of step S2 of the method for producing a multifunctional nail art polishing head in Example 5 of the present application. [Figure 8] FIG. 10 is a cross-sectional view of the bit when processing is completed in step S2 of the method for producing a multifunctional nail art polishing head in Example 5 of the present application. [Explanation of symbols]

[0033] 1...bit, 2...shank, 3...first helical groove, 31...1 spiral groove, 32...No. 2 spiral groove, 33...No. 3 spiral groove, 34...No. 4 spiral groove, 4...rack, 41...blade, 5...large tooth segments, 51...small tooth segment, 6...Second spiral groove, 7...Support part. DETAILED DESCRIPTION OF THE INVENTION

[0034] The present invention will be described in further detail below with reference to FIGS.

[0035] Example 1 The present embodiment discloses a multi-function nail art polishing head.

[0036] Referring to Figure 1, the multifunctional nail art polishing head includes a bit 1 and a shank 2, the bit 1 being cylindrical and the shank 2 being rod-shaped, and the shank 2 being coaxially inserted into the end of the bit 1 and fixed to the bit 1 by welding.

[0037] Referring to Figures 1 and 2, a first spiral groove 3 is opened on the outer wall of the bit 1 along its axial direction, and the first spiral groove 3 is a right-handed spiral groove. There are multiple first spiral grooves 3 opened, and the multiple first spiral grooves 3 are opened at intervals along the circumferential direction of the bit 1, and a left-handed spiral rack 4 is formed between each two adjacent first spiral grooves 3.

[0038] 2, in a radial cross section of the bit 1, multiple groups of large tooth segments 5 are sequentially arranged around the circumference of the outer wall of the bit 1, and each group of large tooth segments 5 is composed of multiple groups of small tooth segments 51 sequentially arranged, and each group of small tooth segments 51 is composed of several racks 4. In this embodiment, there are a total of six groups of large tooth segments 5 around the circumference of the outer wall of the bit 1, and each group of large tooth segments 5 is composed of four groups of small tooth segments 51, and each group of small tooth segments 51 is composed of two racks 4.

[0039] In the counterclockwise direction (see FIG. 2), the pitch of the two racks 4 in the four groups of small tooth segments 51 gradually decreases, thereby changing the arrangement density of the racks 4 from sparse to dense in one large tooth segment 5. When using the nail art polishing head to perform processing and grinding, the nail art equipment uses the shank 2 to drive and rotate the bit 1, which in turn drives and rotates the six groups of large tooth segments 5 synchronously. Since the arrangement density of the racks 4 varies in each group of large tooth segments 5, the bit 1 can perform rough grinding and fine grinding simultaneously. Furthermore, there is no need to keep changing the nail art polishing head, making it easier for nail artists to remove nail art accessories with different hardness.

[0040] In the radial cross section of the bit 1, a line of symmetry is formed from the cutting edge of the rack 4 to the center of the bit 1, and the tip of each rack 4 is arranged in mirror symmetry along the line of symmetry. Compared to conventional bits 1 that can only move and grind in one direction, the symmetrical arrangement of the racks 4 allows the bit 1 to move back and forth on the nail during grinding, and also makes it easier for nail artists to quickly remove nail art accessories.

[0041] The depth of the first spiral groove 3 is proportional to the distance between the racks 4; the denser the arrangement of the racks 4 in the large tooth segment 5, the smaller the pitch between two adjacent racks 4, and the shallower the depth of the first spiral groove 3 between two adjacent racks 4; the sparser the arrangement of the racks 4 in the large tooth segment 5, the greater the distance between two adjacent racks 4, and the deeper the depth of the first spiral groove 3 between two adjacent racks 4.

[0042] The more sparsely arranged the racks 4 are, the deeper the first spiral groove 3 is, the higher the tooth height of the corresponding rack 4 is, and the wider the base of the rack 4 is, which further increases the structural strength of the rack 4. When performing rough grinding with racks 4 that are more sparsely arranged, the structural strength of racks 4 with wider bases is higher and the rack 4 is less likely to be damaged.

[0043] A support portion 7 is integrally formed along the spiral direction of the first spiral groove 3 in the middle of the side wall of the rack 4 near the first spiral groove 3, and in a radial cross section of the bit 1, the support portion 7 is located on the tooth surface of the rack 4 and extends in a direction away from the rack 4, the width of the support portion 7 on the side closer to the rack 4 is greater than the width of the side farther from the rack 4, and the end of the support portion 7 farther from the rack 4 presents an acute angle. The support portion 7 increases the structural strength of the rack 4, making the rack 4 even more resistant to damage.

[0044] The cross section of the first spiral groove 3 has an inverted staircase shape, and the depth of the first spiral groove 3 increases, increasing the area of ​​the inverted staircase shape of the cross section of the first spiral groove 3. The inverted staircase shape of the first spiral groove 3 increases the width of the tooth gap between adjacent blades 41, making it difficult for grinding debris to become trapped in the first spiral groove 3 and facilitating cleaning of the debris in the first spiral groove 3 after using the nail art polishing head. Furthermore, the more sparsely the racks 4 are arranged, the larger the grinding debris will be, and in this case, a deeper first spiral groove 3 makes it easier to remove the larger debris.

[0045] 1, a second spiral groove 6 is opened on the outer wall of the bit 1 along its axial direction, and the second spiral groove 6 is a left-handed spiral groove, the included angle between the first spiral groove 3 and the second spiral groove 6 is 30 to 120°, and the depth of the second spiral groove 6 is greater than the depth of the first spiral groove 3. A plurality of second spiral grooves 6 are opened, and the plurality of second spiral grooves 6 are opened at equal intervals along the circumferential direction of the bit 1, and each rack 4 is divided into a plurality of blades 41 by the plurality of second spiral grooves 6.

[0046] The second spiral groove 6 divides the rack 4 into multiple blades 41, shortening the length of the cutting edge of the rack 4. When the bit 1 rotates, each blade 41 with a shorter cutting edge grinds the nail art accessory, resulting in smaller grinding debris, which is less likely to become trapped in the first spiral groove 3. Furthermore, during grinding, grinding debris can be discharged from the bit 1 through the deeper second spiral groove 6, making it even less likely that the debris will become trapped in the first spiral groove 3.

[0047] The implementation principle of Example 1 of the present application is as follows: When using the nail art polishing head for processing and grinding, the nail art equipment uses the shank 2 to drive and rotate the bit 1, which in turn drives and synchronously rotates six groups of large tooth segments 5. The arrangement density of the racks 4 in each group of large tooth segments 5 is different, allowing the bit 1 to simultaneously perform rough grinding and fine grinding, eliminating the need to keep replacing the nail art polishing head. The symmetrical arrangement of the racks 4 allows the bit 1 to move back and forth on the nail during grinding. The larger the pitch between the blades 41, the greater the tooth height of the blades 41, thereby increasing the structural strength of the blades 41. This makes it easier for nail artists to quickly and stably remove nail art accessories with different hardnesses.

[0048] Example 2 Referring to FIG. 3, the present embodiment differs from the first embodiment as follows: there are a total of three groups of large tooth segments 5 around the circumference of the outer wall of the bit 1, and each group of large tooth segments 5 is made up of four groups of small tooth segments 51. In the counterclockwise direction (see FIG. 2), the first group of small tooth segments 51 is made up of two racks 4, the second group of small tooth segments 51 is made up of three racks 4, the third group of small tooth segments 51 is made up of four racks 4, and the fourth group of small tooth segments 51 is made up of five racks 4.

[0049] From the first group of small tooth segments 51 to the fourth group of small tooth segments 51, the pitch between two adjacent racks 4 within a small tooth segment 51 gradually decreases, and the pitch between two adjacent racks 4 within any one small tooth segment 51 is the same. In one group of large tooth segments 5, the arrangement density of the racks 4 changes from sparse to dense in the counterclockwise direction, and the number of racks 4 within four small tooth segments 51 increases.

[0050] The number of racks 4 in any one group of small tooth segments 51 determines the length of the small tooth segments 51, and small tooth segments 51 of different lengths, thereby adjusting the degree of rough grinding or fine grinding of each group of large tooth segments 5. When using the bit 1 for grinding, the number of racks 4 with a sparse arrangement is small and the number of racks 4 with a dense arrangement is large, and the bit 1 can achieve rough grinding and is more suitable for fine grinding, further improving the applicability of the nail art polishing head.

[0051] The implementation principle of Example 2 of the present application is as follows: when each group of large tooth segments 5 rotates and grinds, multiple groups of small tooth segments 51 with different arrangement densities are ground in sequence, and the length of any one group of small tooth segments 51, including small tooth segments 51 with different lengths, is determined according to the number of racks 4 in that group, thereby adjusting the degree of rough grinding or fine grinding of each group of large tooth segments 5, and further improving the applicability of the nail art polishing head.

[0052] Example 3 4, the differences between this embodiment and the first embodiment are as follows: along the clockwise direction (see FIG. 4), the pitch between two racks 4 in the small tooth segments 51 of the first group is smaller than the distance between two racks 4 in the small tooth segments 51 of the second group, the pitch between two racks 4 in the small tooth segments 51 of the second group is smaller than the distance between two racks 4 in the small tooth segments 51 of the third group, the pitch between two racks 4 in the small tooth segments 51 of the third group is larger than the distance between two racks 4 in the small tooth segments 51 of the fourth group, and the pitch between two racks 4 in the small tooth segments 51 of the fourth group is larger than the pitch between two racks 4 in the small tooth segments 51 of the first group in the next larger tooth segment 5.

[0053] The four groups of small tooth segments 51 in the first group of large tooth segments 5 and the first group of small tooth segments 51 in the next group of large tooth segments 5 are arranged symmetrically with the center line of the third group of small tooth segments 51 in the first group of large tooth segments 5 as the axis of symmetry. In a radial cross section of the bit 1, the arrangement density of the blades 41 along the circumferential direction of the cross section is an alternating dense-sparse-dense-sparse arrangement, or an alternating sparse-dense-sparse-dense arrangement.

[0054] The implementation principle of Example 3 of the present application is as follows: along the circumferential direction of the cross section of the bit 1, the arrangement density of the cutting edges 41 is an alternating dense-sparse-dense-sparse arrangement, or an alternating sparse-dense-sparse-dense arrangement, so that when grinding with the bit 1, the alternation between rough grinding and precision grinding becomes smoother, and furthermore, the grinding effect of the bit 1 is better.

[0055] Example 4 5, the differences between the present embodiment and the first embodiment are as follows: The bit 1 may also be provided in other shapes such as A1 to A11, and the bit 1 is always attached coaxially to the shank 2. Here, bit A1 is cylindrical, bit A2 is cylindrical and has rounded corners at the end of bit 1, bit A3 is cylindrical and has a chamfered end of bit 1, bit A4 has a cylindrical bottom and a hemispherical top with a shiny surface, bit A5 has a cylindrical bottom and a hemispherical top with a spiral groove on the surface, bit A6 is truncated cone-shaped, bit A7 is truncated cone-shaped and has rounded corners at the end of bit 1, bit A8 has a truncated cone-shaped bottom and a hemispherical top with a shiny surface, bit A9 has a truncated cone-shaped bottom and a hemispherical top with a spiral groove on the surface, bit A10 is semi-ellipsoid-shaped, and bit A11 is semi-ellipsoid-shaped and has a flat end of bit 1.

[0056] Example 5 The present embodiment discloses a method for producing a multi-function nail art polishing head.

[0057] Referring to Figures 6, 7 and 8, a method for producing a multi-function nail art polishing head uses the above multi-function nail art polishing head, and includes the following processing steps: In S1, the shank 2 is first inserted into the end of the bit 1, and then the shank 2 is welded and fixed to the bit 1, or a metal bar is milled into an integrated bit 1 and shank 2, and the bit 1 and shank 2 form a stepped shape.

[0058] In S2, a plurality of first spiral grooves 3 are opened in the bit 1, and a plurality of racks 4 are formed in the bit 1.

[0059] In S2.1, a digitally controlled machine tool is used to open 60 No. 1 spiral grooves 31, each 0.23 mm deep, at equal intervals along the circumferential direction of the bit 1 to form 60 racks 4, which are then divided into six groups of large tooth segments 5, each group of which has 10 racks 4. In S2.2, in one group of large tooth segments 5, multiple racks 4 are divided into four groups of small tooth segments 51 along the clockwise direction, where the first group of small tooth segments 51 includes the first and second racks 4, the second group of small tooth segments 51 includes the second, third, and fourth racks 4, the third group of small tooth segments 51 includes the fourth, fifth, sixth, and seventh racks 4, and the fourth group of small tooth segments 51 includes the seventh, eighth, ninth, and tenth racks 4. In step S2.3, in the second group of small tooth segments 51, one No. 2 spiral groove 32 is opened in the bit 1, the depth of the No. 2 spiral groove 32 is 0.35 mm, and the width of the No. 2 spiral groove 32 is greater than the width of the No. 1 spiral groove 31. The No. 2 spiral groove 32 grinds the third rack 4 in one group of large tooth segments 5, and supports 7 are formed on both side walls of the two racks 4 on both sides of the No. 2 spiral groove 32. In step S2.4, in the small tooth segment 51 of the third group, one No. 3 spiral groove 33 is opened in the bit 1, the depth of the No. 3 spiral groove 33 is 0.45 mm, the width of the No. 3 spiral groove 33 is greater than the width of the No. 2 spiral groove 32, and the No. 3 spiral groove 33 is used to grind the fifth and sixth racks 4 in one large tooth segment 5 of the group, and support portions 7 are formed on both side walls of the two racks 4 on both sides of the No. 3 spiral groove 33. In S2.5, in the small tooth segment 51 of the fourth group, one No. 4 spiral groove 34 is opened in the bit 1, the depth of the No. 4 spiral groove 34 is 0.5 mm, the width of the No. 4 spiral groove 34 is greater than the width of the No. 3 spiral groove 33, and the No. 4 spiral groove 34 is used to grind the eighth, ninth and tenth racks 4 in one large tooth segment 5 of the group, and support portions 7 are formed on both side walls of the two racks 4 on both sides of the No. 4 spiral groove 34. In S2.6, steps S2.3 to S2.5 are repeated to machine the large tooth segments 5 of the second through sixth groups.

[0060] In S3, a digitally controlled machine tool is used to open 15 second spiral grooves 6 at equal intervals along the circumferential direction of the bit 1 on the outer wall of the bit 1, and the included angle between the second spiral groove 6 and the first spiral groove 3 in the spiral direction is 60°.

[0061] This embodiment is a processing method for the polishing head of embodiment 1. In actual production, the number of racks 4 formed after opening the No. 1 spiral groove 31 along the circumferential direction of the bit 1 can be freely changed, the number of large tooth segments 5 into which the bit 1 is divided circumferentially can be freely changed, the number of small tooth segments 51 in each large tooth segment 5 can be freely changed, and the number of racks 4 in each small tooth segment 51 can be freely changed. The arrangement density of the racks 4 in multiple small tooth segments 51 in one large tooth segment 5 can be from sparse to dense, from dense to sparse, or the sparse and dense patterns can intersect.

[0062] The principle of implementation of Example 5 of the present application is as follows: First, the No. 1 spiral groove 31 is opened to form 60 racks 4 of the same size. Then, using the 60 racks 4, the No. 2 spiral groove 32, the No. 3 spiral groove 33, and the No. 4 spiral groove 34 are opened, which facilitates more accurate and rapid machining of racks 4 with different arrangement densities and tooth heights on the bit 1. Furthermore, once the No. 2 spiral groove 32, the No. 3 spiral groove 33, and the No. 4 spiral groove 34 are opened, support portions 7 can be formed on the side walls of the cutting edge 41 on both sides of the spiral groove, which facilitates machining of the bit 1.

[0063] The above are preferred embodiments of the present application, and do not limit the scope of protection of the present application. Therefore, any equivalent modifications made according to the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A multifunctional nail art polishing head including a bit (1) and a shank (2), wherein a plurality of first spiral grooves (3) are opened at intervals on a circumferential side wall of the bit (1), a rack (4) is formed between each two adjacent first spiral grooves (3) of the bit (1), and a plurality of groups of large tooth segments (5) each consisting of a plurality of racks (4) are formed along the circumferential direction of the bit (1) in a radial cross section of the bit (1), and the arrangement density of the racks (4) in one group of large tooth segments (5) changes from sparse to dense, or from dense to sparse, or the arrangement density changes along the circumferential direction of the bit (1). A multi-functional nail art polishing head.

2. A plurality of second spiral grooves (6) are opened at intervals on the circumferential side wall of the bit (1), the spiral direction of the second spiral grooves (6) is opposite to the spiral direction of the first spiral groove (3), one rack (4) is divided into a plurality of blades (41) by the plurality of second spiral grooves (6), and each of the blades (41) is arranged symmetrically with respect to a line connecting its own cutting edge to the axis of the bit (1).

2. The multi-functional nail art polishing head according to claim 1.

3. One group of the large tooth segments (5) includes a plurality of groups of small tooth segments (51) arranged in sequence, and each of the small tooth segments (51) consists of several racks (4), the pitch of two adjacent racks (4) in each group of the small tooth segments (51) is the same, and the arrangement density of the racks (4) of different small tooth segments (51) is different.

2. The multi-functional nail art polishing head according to claim 1.

4. In different large tooth segments (5), the number of racks (4) corresponding to small tooth segments (51) is the same, and the arrangement rules of different large tooth segments (5) are the same.

4. The multi-functional nail art polishing head according to claim 3.

5. A support portion (7) is formed on a side wall of the blade (41) close to the first spiral groove (3) so as to protrude outward, and the support portion (7) is provided along the spiral direction of the first spiral groove (3).

3. The multi-functional nail art polishing head according to claim 2.

6. The tooth height of the rack (4) increases as the sparseness of the rack (4) increases, and the tooth height of the rack (4) decreases as the density of the rack (4) increases.

2. The multi-functional nail art polishing head according to claim 1.

7. The cross section of the first spiral groove (3) has an inverted staircase shape.

2. The multi-functional nail art polishing head according to claim 1.

8. The pitch between two adjacent racks (4) is proportional to the depth of the first spiral groove (3).

2. The multi-functional nail art polishing head according to claim 1.

9. The angle between the first spiral groove (3) and the second spiral groove (6) is 30 to 120 degrees.

2. The multi-functional nail art polishing head according to claim 1.

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