Grinding clamp, arc-shaped tool bit assembly and shaver
By using a grinding fixture to grind the moving blade edge during the grinding process of the curved cutting head assembly and matching it with the mesh cover, the problem of the moving blade edge collapse and the mesh cover thinning is solved, achieving higher sharpness and shaving efficiency, significantly improving the shaving experience.
Patent Information
- Application Number
- CN202420552630.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-21
AI Technical Summary
During the process of matching and researching, existing curved cutting head components are prone to problems such as cracking of the blade edge and unanticipated thinning of the mesh, resulting in poor sharpness, long shaving time and shaving of the skin.
The grinding clamp is used to grind the movable knife after the plane is opened, so that the movable knife edge is ground into an arc shape, and then it is matched with the mesh cover to form an arc-shaped cutter head assembly. The shaping blade assembly is not easy to break, and the mesh will not become unexpectedly thin, with good sharpness, which reduces shaving time and improves shaving experience.
By reducing the grinding amount of the blade on the plane of the moving blade and using a grinding fixture to grind the blade, the problem of the blade cracking and mesh thinning is solved, the sharpness and shaving efficiency are improved, the phenomenon of shaving the skin is reduced, and the shaving experience is significantly improved.
Smart Images
Figure CN222552989U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hair trimming equipment, and further relates to a grinding fixture, an arc-shaped cutter head assembly and a shaver. Background Art
[0002] With the development of economy and the progress of society, people are pursuing higher and higher quality of life, and their requirements for the health, environmental protection and comfort of personal daily care appliances are also getting higher and higher. As an important member of this category, rotary electric shavers are no exception.
[0003] The shaving part of the commonly used rotary electric shaver head assembly is flat. In pursuit of comfort and improved shaving experience, rotary electric shaver head assemblies with curved shaving parts are gradually appearing on the market, such as Philips curved head assemblies, which are favored by consumers for their smooth movement, clean shaving and other good shaving experiences. Philips curved head assemblies (especially the inner surface of the shaving part of the mesh cover and the moving blade edge) are made by electrochemical processing. Domestic curved head assemblies (especially the inner surface of the shaving part of the mesh cover and the moving blade edge) are obtained through the processes of flat grinding of the moving blade edge, curved grinding of the inner surface of the shaving part of the mesh cover (mechanical grinding / mixed grinding with electrolytic processing), and mesh cover and moving blade matching and other processes.
[0004] Although the Philips curved blade assembly can meet the requirements, the cost of electrochemical processing is high, and the domestic electrochemical processing technology is not mature, so it is expensive. The curved blade assembly obtained by flat grinding of the moving blade edge, arc grinding of the inner surface of the mesh cover shaving part, and matching of the mesh cover and the moving blade has an arc-shaped inner surface of the mesh cover, but the two ends of the moving blade edge are prone to chipping during matching, the mesh cover is partially thinned (at the contact point with the two ends of the moving blade edge) unexpectedly, and the inner surface of the mesh cover is not a complete arc. When shaving, it is easy to have poor sharpness, long shaving time, and shaving skin. The actual shaving experience is not significantly improved compared with the shaving experience of the flat blade assembly, but is inferior. Utility Model Content
[0005] In view of the above technical problems, the purpose of the utility model is to provide a grinding fixture, an arc-shaped blade head assembly and a razor, which can reduce the grinding amount of the flat edge of the moving blade, use the grinding fixture to grind the moving blade after flat edge grinding, so that the blade edge of the moving blade is ground into an arc shape, and then grind it with the mesh cover to obtain an arc-shaped blade head assembly. The moving blade of the arc-shaped blade head assembly is not easy to break, the mesh cover will not appear unexpected thinning, the sharpness is good, and the undesirable phenomena such as short shaving time and shaving skin are reduced, thereby improving the shaving experience.
[0006] In order to achieve the above-mentioned purpose, the utility model provides a grinding fixture for grinding an arc-shaped cutter head assembly, wherein the arc-shaped cutter head assembly comprises a mesh cover and a movable knife, the plane sharpening grinding amount of the movable knife is reduced, the mesh cover comprises an inner ring shaving portion and an outer ring shaving portion, the arc radius of the cross section of the inner ring shaving portion is R1, the arc radius of the cross section of the outer ring shaving portion is R2, a grinding position is provided on the grinding fixture, the grinding position is used to grind the movable knife edge into a preset shape, the grinding position comprises an inner annular groove and an outer annular groove, the inner annular groove matches the inner annular shaving portion, the radius of the inner annular groove is r1, r1=0.6R1; the outer annular groove matches the outer annular shaving portion, the radius of the outer annular groove is r2, r2=0.6R2
[0007] In some embodiments, the height difference between the lowest point of the inner ring shaving portion arc and the lowest point of the outer ring shaving portion arc is H;
[0008] The height difference between the lowest point of the inner annular groove arc and the lowest point of the outer annular groove arc is h, where h=H±0.03 mm.
[0009] In some embodiments, the inner ring radius formed by the lowest point of the arc of the inner surface of the inner ring shaving portion and the lowest point of the arc of the inner surface of the outer ring shaving portion is R3, and the outer ring radius is R4;
[0010] The radius of the inner groove formed by the lowest point of the inner annular groove arc is r3, r3 = R3 ± 0.2mm; the radius of the outer groove formed by the lowest point of the outer annular groove arc is r4, r4 = R4 ± 0.2mm.
[0011] In some embodiments, after grinding, the arc radius of the inner ring cutting edge of the movable knife is r5, and the radius of the inner annular groove is r1, r5=r1; the arc radius of the outer ring cutting edge of the movable knife is r6, and the radius of the outer annular groove is r2, r6=r2;
[0012] If the arc radius of the inner ring cutting edge of the movable knife is larger than the arc radius of the cross section of the inner ring shaving part and / or the arc radius of the outer ring cutting edge of the movable knife is larger than the arc radius of the cross section of the outer ring shaving part, that is, if r5>R1 and / or r6>R2, then the grinding position is trimmed.
[0013] In some embodiments, a fixed column is further provided in the center of the grinding position, a fixed hole is provided in the middle of the movable knife, and the movable knife is sleeved on the fixed column so that the inner ring cutting edge and the outer ring cutting edge of the movable knife are always respectively located in the inner annular groove and the outer annular groove of the grinding position.
[0014] According to another aspect of the present application, there is further provided an arc-shaped cutter head assembly, comprising a movable cutter and a mesh cover, wherein the movable cutter is formed by grinding using a grinding fixture of any one of the above-mentioned preferred embodiments, and after grinding, the movable cutter and the mesh cover are matched and ground to obtain the arc-shaped cutter head assembly.
[0015] In some embodiments, the surface grinding amount of the movable knife is reduced, and the reduction value of the surface grinding amount of the movable knife is the sum of the amount removed by grinding the movable knife and the amount removed by grinding the movable knife;
[0016] The amount of removal by the movable knife during grinding is 0.03mm-0.5mm, the amount of removal by the movable knife during matching grinding is 0.02mm-0.12mm, and the numerical range of the amount of reduction in grinding by sharpening the movable knife is 0.05mm-0.62mm.
[0017] In some embodiments, the amount of removal by the movable knife during grinding is 0.05mm-0.10mm, and the amount of removal by the movable knife during grinding is 0.03mm-0.05mm; the reduction value of the amount of surface grinding of the movable knife is 0.08mm-0.15mm.
[0018] In some embodiments, before the movable knife and the mesh cover are matched, the lowest point of the inner ring edge of the movable knife contacts the lowest point of the inner surface of the inner ring shaving part of the mesh cover, and the lowest point of the outer ring edge of the movable knife contacts the lowest arc point of the inner surface of the outer ring shaving part of the mesh cover;
[0019] Grinding starts from the lowest point of the inner ring cutting edge and the lowest point of the outer ring cutting edge of the movable knife, reducing the removal amount of the movable knife during grinding, so that after grinding, the inner ring cutting edge and the outer ring cutting edge of the movable knife are in contact with the inner surface of the inner ring shaving part and the inner surface of the outer ring shaving part of the mesh cover.
[0020] According to another aspect of the present application, a shaver is further provided, comprising the arc-shaped cutter head assembly of any one of the above-mentioned preferred embodiments.
[0021] Compared with the prior art, the grinding fixture, arc-shaped cutter head assembly and razor provided by the utility model have at least one of the following beneficial effects:
[0022] 1. Reduce the amount of grinding on the flat surface of the moving knife, use a grinding fixture to grind the moving knife after flat surface grinding, so that the blade of the moving knife is ground into an arc shape, and then grind it with the mesh cover to obtain an arc-shaped cutter head assembly. The moving knife of the arc-shaped cutter head assembly is not easy to break, the mesh cover will not appear unexpected thinning, the sharpness is good, and the undesirable phenomena such as short shaving time and shaving skin are reduced, thereby improving the shaving experience.
[0023] 2. The purpose of grinding the moving knife is to grind the moving knife edge into a designed shape so that there will be no unexpected changes when the moving knife and the mesh cover are ground together, and the desired arc-shaped cutter head assembly is obtained; after the moving knife grinding is completed, the shape of the moving knife edge is the same as the shape of the grinding position.
[0024] 3. The height difference between the lowest point of the arc of the inner annular groove and the lowest point of the arc of the outer annular groove on the grinding position is equal to or close to the height difference between the lowest point of the arc of the inner surface of the inner ring shaving part and the lowest point of the arc of the outer ring shaving part on the mesh cover, so that during grinding, the inner ring cutting edge and the outer ring cutting edge of the movable knife are ground at the same time as the inner surface of the inner ring shaving part and the inner surface of the outer ring shaving part on the mesh cover, and the inner ring cutting edge and the outer ring cutting edge of the movable knife can be ground, with the best sharpness and shaving efficiency, and the shortest grinding time.
[0025] 4. The inner groove radius formed by the lowest point of the inner annular groove arc is equal to or similar to the inner ring radius formed by the lowest point of the inner surface arc of the inner ring shaving part; the outer groove radius formed by the lowest point of the outer annular groove arc is equal to or similar to the outer ring radius formed by the lowest point of the inner surface arc of the outer ring shaving part, so that the inner ring cutting edge and the outer ring cutting edge of the movable knife can be ground at the same time during grinding, and the grinding time is short. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.
[0027] Figure 1 It is a schematic diagram of the adjustment of the blade sharpening of the moving knife plane;
[0028] Figure 2 It is a schematic diagram of the cross section after the moving knife is ground;
[0029] Figure 3 Schematic diagram of the inner ring cutting edge end and the outer ring cutting edge end;
[0030] Figure 4 is a schematic diagram of a cross section of a mesh cover;
[0031] Figure 5 This is a comparison diagram of the moving knife before and after grinding;
[0032] Figure 6 It is a schematic diagram of the moving knife grinding section;
[0033] Figure 7 is a schematic diagram of the cross section of the grinding position;
[0034] Figure 8 It is a schematic diagram of the partial cross section of the grinding position and the mesh cover;
[0035] Fig. 9 It is a schematic diagram of the cross section of the moving knife and the mesh cover before assembly;
[0036] Fig.10 It is a flow chart of a method for processing a curved cutter head assembly.
[0037] Description of Figure Numbers:
[0038] Grinding position 1, inner annular groove 11, outer annular groove 12, fixed column 13, movable knife 2, fixed hole 210, inner ring cutting edge 220, inner ring cutting edge end 2201, outer ring cutting edge 221, outer ring cutting edge end 2211, mesh cover 3, inner ring shaving part 31, inner surface 310 of inner ring shaving part, outer ring shaving part 32, inner surface 320 of outer ring shaving part, grinding oil 4. DETAILED DESCRIPTION
[0039] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.
[0040] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".
[0041] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.
[0042] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0043] In addition, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the scope of protection of the utility model.
[0044] The utility model provides a grinding fixture for grinding an arc-shaped cutter head component. Figures 1 to 4 The arc-shaped cutter head assembly includes a mesh cover 3 and a movable cutter 2, the flat surface grinding amount of the movable cutter 2 is reduced, the mesh cover 3 includes an inner ring shaving portion 31 and an outer ring shaving portion 32, the arc radius of the cross section of the inner ring shaving portion 31 is R1, and the arc radius of the cross section of the outer ring shaving portion 32 is R2. Figures 6 to 8 A grinding position 1 is provided on the grinding fixture, and the grinding position 1 is used to grind the cutting edge of the movable knife 2 into a preset shape. The grinding position 1 includes an inner annular groove 11 and an outer annular groove 12. The inner annular groove 11 matches the inner annular shaving portion 31, and the radius of the inner annular groove 11 is r1, r1=0.6R1; the outer annular groove 12 matches the outer annular shaving portion 32, and the radius of the outer annular groove 12 is r2, r2=0.6R2.
[0045] In the present embodiment, the grinding amount of the flat edge of the movable blade 2 is reduced, and the movable blade 2 after flat edge sharpening is ground using a grinding fixture so that the cutting edge of the movable blade 2 is ground into an arc shape, and then matched with the mesh cover 3 to obtain an arc-shaped blade head assembly. The movable blade 2 of the arc-shaped blade head assembly is not easy to chip, and the mesh cover 3 will not appear unexpected thinning, and the sharpness is good, which reduces undesirable phenomena such as short shaving time and shaving skin, thereby improving the shaving experience.
[0046] Specifically, refer to Figure 4 and Figure 7 , the radius of the inner annular groove 11 is r1, r1=0.6R1; the radius of the outer annular groove 12 is r2, r2=0.6R2. After grinding by the grinding fixture, the inner ring cutting edge end 2201 and the outer ring cutting edge end 2211 of the movable knife 2 are respectively about 0.02mm away from the inner surface 310 of the inner ring shaving part and the inner surface 320 of the outer ring shaving part of the mesh cover 3. They will not collide with the inner surface of the shaving part of the mesh cover 3 during grinding to cause the blade to break, nor will the distance from the inner surface of the shaving part of the mesh cover 3 exceed 0.005mm after grinding, ensuring good sharpness and good sound consistency. It is worth noting that the arc blade head assembly includes but is not limited to a double-ring rotary shaver arc blade head assembly, including a single-ring, three-ring and other rotary shaver arc blade head assemblies. This application will not be described one by one here.
[0047] It is worth noting that a plurality of annular grooves are provided on the grinding position 1 according to the shaving part of the mesh cover 3, the cross-sectional radius of the inner surface of the shaving part is R, and the radius of the annular groove is r, r≤R. Specifically, the shape of the grinding position 1 of the arc grinding fixture is determined according to the shape of the mesh cover 3. The arc head assembly includes a double-ring rotary shaver arc head assembly, and the mesh cover 3 of the double-ring rotary shaver arc head assembly includes an inner ring shaving part 31 and an outer ring shaving part 32, and the arc radius of the cross section of the inner ring shaving part 31 is R1 and the arc radius of the cross section of the outer ring shaving part 32 is R2; according to the arc radius of the cross section of the inner ring shaving part 31 being R1 and the arc radius of the cross section of the outer ring shaving part 32 being R2, an inner annular groove 11 and an outer annular groove 12 are made on the grinding position 1, and the radius of the inner annular groove 11 is r1, r1≤R1; the radius of the outer annular groove 12 is r2, r2≤R2.
[0048] Further, refer to Figure 2 and Figure 8 The height difference between the lowest point of the arc of the inner ring shaving part 31 and the lowest point of the arc of the outer ring shaving part 32 is H; the height difference between the lowest point of the arc of the inner annular groove 11 and the lowest point of the arc of the outer annular groove 12 is h, h = H ± 0.03mm.
[0049] Specifically, when the grinding station 1 is manufactured, the height difference h between the lowest point of the arc of the inner annular groove 11 and the lowest point of the arc of the outer annular groove 12 on the grinding station 1 is equal to or close to the height difference H between the lowest point of the arc of the inner surface 310 of the inner ring shaving part and the lowest point of the arc of the inner surface 320 of the outer ring shaving part on the net cover 3, h = H ± 0.03mm, so that when grinding, the inner ring cutting edge 220 and the outer ring cutting edge 221 of the movable knife 2 are aligned with the inner surface 310 of the inner ring shaving part and the outer ring shaving part on the net cover 3. The inner surface 320 of the inner ring 320 and the outer ring 321 of the movable knife 2 can be ground at the same time, the sharpness and shaving efficiency are the best, and the grinding time is the shortest; the height difference h of the lowest point of the arc of the inner annular groove 11 and the outer annular groove 12 and the height difference H of the lowest point of the arc of the inner ring shaving part 31 and the outer ring shaving part 32 are more than 0.03mm, which will cause one of the inner and outer rings of the movable knife 2 and the net cover 3 to be not ground, the sharpness is not good, and the shaving time is prolonged. Preferably, h=H.
[0050] Further, refer to Figure 4 and Figure 7 The inner ring radius formed by the lowest point of the arc of the inner surface 310 of the inner ring shaving part and the lowest point of the arc of the inner surface 320 of the outer ring shaving part is R3, and the outer ring radius is R4; the inner groove radius formed by the lowest point of the arc of the inner annular groove 11 is r3, r3=R3±0.2mm; the outer groove radius formed by the lowest point of the arc of the outer annular groove 12 is r4, r4=R4±0.2mm.
[0051] Specifically, the lowest arc point of the inner annular groove 11 and the lowest arc point of the outer annular groove 12 on the grinding position 1 form two circles, and the lowest arc points of the inner surface 310 of the inner ring shaving part and the inner surface 320 of the outer ring shaving part on the net cover 3 also form two circles. The inner groove radius formed by the lowest arc point of the inner annular groove 11 is equal to or similar to the inner ring radius formed by the lowest arc point of the inner surface 310 of the inner ring shaving part, r3=R3±0.2mm; the outer groove radius formed by the lowest arc point of the outer annular groove 12 is equal to or similar to the outer ring radius formed by the lowest arc point of the inner surface 320 of the outer ring shaving part, r4=R4±0.2mm. This allows the inner ring cutting edge 220 and the outer ring cutting edge 221 of the movable knife 2 to be ground simultaneously during grinding, and the grinding time is short. Preferably, r3=R3, r4=R4.
[0052] Furthermore, a fixed column 13 is provided in the center of the grinding position 1, and a fixed hole 210 is provided in the middle of the movable knife 2. The movable knife 2 is sleeved on the fixed column 13, so that the inner ring cutting edge 220 and the outer ring cutting edge 221 of the movable knife 2 are always respectively located in the inner annular groove 11 and the outer annular groove 12 of the grinding position 1.
[0053] Specifically, the movable knife 2 and the grinding oil 4 that have been flat-edged are placed on several grinding positions 1 of the arc-shaped grinding fixture, and the movable knife 2 is rotated, and the rotation direction of the movable knife 2 is consistent with the shaving rotation direction, so that the edge of the movable knife 2 is ground into an arc shape. In this embodiment, the grinding of the movable knife 2 is to place the movable knife 2 and the grinding oil 4 that have been flat-edged on several grinding positions 1 of the arc-shaped grinding fixture, and the movable knife 2 is rotated. The rotation direction is uncertain, and the optimal direction is consistent with the shaving rotation direction. The grinding direction is consistent with the shaving direction, which can reduce the risk of burrs on the edge of the movable knife 2 and chipping of the edge of the movable knife 2 during the grinding (later process). The grinding oil 4 is a mixture of grinding sand and lubricating oil, which is in a fluid state, and the grinding oil 4 of the grinding process can be used directly. A fixing column 13 is also provided in the center of the grinding station 1, and a fixing hole 210 is provided in the middle of the moving knife 2. The moving knife 2 is sleeved on the fixing column 13, so that the inner ring cutting edge 220 and the outer ring cutting edge 221 of the moving knife 2 are always located in the inner annular groove 11 and the outer annular groove 12 of the grinding station 1 respectively. The grinding oil 4 covers the inner ring cutting edge 220 and the outer ring cutting edge 221 of the moving knife 2, so that the inner ring cutting edge 220 and the outer ring cutting edge 221 of the moving knife 2 are ground into a complete arc. The arc radius of the inner ring cutting edge 220 is r5, and the arc radius of the outer ring cutting edge 221 is r6. Ignoring the wear of the grinding station 1, r5=r1, r6=r2. Fig. 9As shown, the grinding removal amount D of the inner ring cutting edge 220 and the outer ring cutting edge 221 of the movable knife 2 is in the range of 0.03mm-0.5mm, and the optimal range is 0.05mm-0.10mm, so that during grinding, the grinding time is short, the arc of the cutting edge of the movable knife 2 is completely ground out, and the sharpness is good; if the grinding removal amount is less than 0.05mm, it will be difficult to grind out the arc of the cutting edge of the movable knife 2 during grinding, and the sharpness is poor; if the grinding removal amount is greater than 0.10mm, the grinding time will be long and the grinding cost will be high.
[0054] After grinding, the end of the blade of the movable knife 2 is at a certain distance from the inner surface of the shaving part of the mesh cover 3. It is worth noting that after grinding, the arc radius of the inner ring blade 220 of the movable knife 2 is r5, r5=r1; the arc radius of the outer ring blade 221 of the movable knife 2 is r6, r6=r2; if the arc radius r5 of the inner ring blade 220 of the movable knife 2 is greater than the arc radius R1 of the cross section of the inner ring shaving part 31 and / or the arc radius of the outer ring blade 221 of the movable knife 2 is greater than the arc radius R2 of the cross section of the outer ring shaving part 32, that is, if r5>R1 and / or r6>R2, then the grinding position 1 is trimmed.
[0055] Further, refer to Figures 1 to 6 The present application provides an arc-shaped cutter head assembly, including a movable cutter 2 and a mesh cover 3. The movable cutter 2 is formed by grinding using a grinding fixture in any of the above-mentioned embodiments. After grinding, the movable cutter 2 and the mesh cover 3 are matched and ground to obtain an arc-shaped cutter head assembly.
[0056] In this embodiment, the purpose of grinding the movable knife 2 is to grind the blade of the movable knife 2 into a designed shape, so that there will be no unexpected changes when the movable knife 2 and the mesh cover 3 are ground, and the desired arc-shaped blade head assembly is obtained. After the grinding of the movable knife 2 is completed, the shape of the blade of the movable knife 2 is the same as the shape of the grinding position 1. Without increasing or slightly increasing the cost, the problem of the inner ring blade end 2201 and the outer ring blade end 2211 on the movable knife 2 being easily chipped during grinding and the unexpected thinning of the mesh cover 3 (at the contact point with the inner ring blade end 2201 and the outer ring blade end 2211) is eliminated. The blade of the movable knife 2 does not chip and the sharpness and shaving efficiency are improved. The mesh cover 3 does not become unexpectedly thinned locally, which reduces the undesirable phenomenon of shaving the skin, and the actual shaving experience is significantly improved.
[0057] Furthermore, the plane grinding amount of the movable knife 2 is reduced, and the reduction value of the plane grinding amount of the movable knife 2 is the sum of the grinding removal amount of the movable knife 2 and the removal amount of the movable knife 2 during grinding; the grinding removal amount of the movable knife 2 is 0.03mm-0.5mm, the removal amount of the movable knife 2 during grinding is 0.02mm-0.12mm, and the numerical range of the grinding amount reduced by the movable knife 2 is 0.05mm-0.62mm.
[0058] Specifically, before the movable knife 2 and the mesh cover 3 are matched and ground, the lowest points of the inner ring cutting edge 220 and the outer ring cutting edge 221 of the movable knife 2 contact the lowest points of the inner surface 310 of the inner ring shaving part and the lowest points of the arc of the inner surface 320 of the outer ring shaving part of the mesh cover 3; the matching and grinding starts from the lowest points of the inner ring cutting edge 220 and the outer ring cutting edge 221 of the movable knife 2. After the matching and grinding is completed, the inner ring cutting edge 220 and the outer ring cutting edge 221 of the movable knife 2 are matched with the inner surface 310 and the inner surface 320 of the inner ring shaving part of the mesh cover 3. The grinding process remains unchanged, and the removal amount of movable knife 2 during grinding is appropriately reduced. The removal amount range of movable knife 2 during grinding is 0.02mm-0.12mm, and the optimal range is 0.03mm-0.05mm, so that the grinding time is short, the arc of the blade of movable knife 2 is fully ground out, and the sharpness is good; the grinding removal amount of movable knife 2 is less than 0.03mm, and the arc of the blade of movable knife 2 is difficult to be fully ground, and the sharpness and shaving efficiency are poor; the grinding removal amount of movable knife 2 is greater than 0.05mm, the grinding time is long, and the grinding cost is high.
[0059] Furthermore, before the movable knife 2 and the mesh cover 3 are ground, the lowest point of the inner ring cutting edge 220 of the movable knife 2 contacts the lowest point of the inner surface 310 of the inner ring shaving portion of the mesh cover 3, and the lowest point of the outer ring cutting edge 221 of the movable knife 2 contacts the lowest point of the arc-shaped inner surface 320 of the outer ring shaving portion of the mesh cover 3; the grinding starts from the lowest point of the inner ring cutting edge 220 and the lowest point of the outer ring cutting edge 221 of the movable knife 2 to reduce the removal amount of the movable knife 2 during the grinding, so that after the grinding, the inner ring cutting edge 220 and the outer ring cutting edge 221 of the movable knife 2 are in contact with the inner surface 310 and the inner surface 320 of the inner ring shaving portion of the mesh cover 3.
[0060] Furthermore, the present application also provides a razor, which includes the arc-shaped blade head assembly in any of the above embodiments.
[0061] Further, refer to Fig.10 The present application also provides a method for processing an arc-shaped cutter head assembly, comprising: S100 adjusting the amount of flat grinding of the moving cutter 2 so that the amount of flat grinding of the moving cutter 2 is reduced. S101 making a grinding position 1 on an arc-shaped grinding fixture according to the arc shape of the mesh cover 3, grinding the moving cutter 2 after flat grinding on the grinding position 1 so that the cutting edge of the moving cutter 2 is ground into an arc shape. S102 matching and grinding the moving cutter 2 with the mesh cover 3 to obtain an arc-shaped cutter head assembly.
[0062] Specifically, S101 makes a grinding station 1 on an arc-shaped grinding fixture according to the arc shape of the mesh cover 3, and grinds the movable knife 2 after flat edge sharpening on the grinding station 1, so that the cutting edge of the movable knife 2 is ground into an arc shape. Specifically including: S200 provides a plurality of annular grooves on the grinding station 1 according to the shaving part of the mesh cover 3, the cross-sectional radius of the inner surface of the shaving part is R, and the radius of the annular groove is r, r≤R. S201 calculates the height difference H between the lowest point of the arc of the inner ring shaving part 31 and the lowest point of the arc of the outer ring shaving part 32; according to the height difference H between the lowest point of the arc of the inner ring shaving part 31 and the lowest point of the arc of the outer ring shaving part 32, the height difference h between the lowest point of the arc of the inner ring groove 11 and the lowest point of the arc of the outer ring groove 12 is obtained, h=H±0.03mm. S202 calculates the inner ring radius R3 and the outer ring radius R4 formed by the arc-shaped lowest points of the inner surface 310 of the inner ring shaving part and the inner surface 320 of the outer ring shaving part; according to the inner ring radius R3, the inner groove radius r3 formed by the arc-shaped lowest points of the inner ring groove 11 is obtained, r3=R3±0.2mm; according to the outer ring radius R4, the outer groove radius r4 formed by the arc-shaped lowest points of the outer ring groove 12 is obtained, r4=R4±0.2mm. S203 Place the flat-edged movable knife 2 and the grinding oil 4 on several grinding positions 1 of the arc-shaped grinding fixture, and rotate the movable knife 2, and the rotation direction of the movable knife 2 is consistent with the shaving rotation direction, so that the cutting edge of the movable knife 2 is ground into an arc shape.
[0063] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.
Claims
1. A grinding fixture for grinding an arc-shaped cutter head assembly, the arc-shaped cutter head assembly comprising a mesh cover and a movable cutter, the flat surface grinding amount of the movable cutter is reduced, the mesh cover comprises an inner ring shaving part and an outer ring shaving part, the arc radius of the cross section of the inner ring shaving part is R1, and the arc radius of the cross section of the outer ring shaving part is R2, characterized in that: The grinding fixture is provided with a grinding position, which is used to grind the moving knife edge into a preset shape. The grinding position includes an inner annular groove and an outer annular groove. The inner annular groove matches the inner ring shaving part, and the radius of the inner annular groove is r1, r1=0.6R1; the outer annular groove matches the outer ring shaving part, and the radius of the outer annular groove is r2, r2=0.6R2.
2. A grinding fixture according to claim 1, characterized in that: The height difference between the lowest point of the inner ring shaving part arc and the lowest point of the outer ring shaving part arc is H; The height difference between the lowest point of the inner annular groove arc and the lowest point of the outer annular groove arc is h, where h=H±0.03 mm.
3. A grinding fixture according to claim 2, characterized in that: The inner ring radius formed by the lowest point of the arc on the inner surface of the inner ring shaving part and the lowest point of the arc on the inner surface of the outer ring shaving part is R3, and the outer ring radius is R4; The radius of the inner groove formed by the lowest point of the inner annular groove arc is r3, r3 = R3 ± 0.2mm; the radius of the outer groove formed by the lowest point of the outer annular groove arc is r4, r4 = R4 ± 0.2mm.
4. A grinding fixture according to claim 3, characterized in that: After grinding, the arc radius of the inner ring cutting edge of the movable knife is r5, and the radius of the inner annular groove is r1, r5=r1; the arc radius of the outer ring cutting edge of the movable knife is r6, and the radius of the outer annular groove is r2, r6=r2; If the arc radius of the inner ring cutting edge of the movable knife is larger than the arc radius of the cross section of the inner ring shaving part and / or the arc radius of the outer ring cutting edge of the movable knife is larger than the arc radius of the cross section of the outer ring shaving part, that is, if r5>R1 and / or r6>R2, then the grinding position is trimmed.
5. A grinding fixture according to claim 1, characterized in that: A fixing column is also provided in the center of the grinding position, a fixing hole is provided in the middle of the moving knife, and the moving knife is sleeved on the fixing column so that the inner ring cutting edge and the outer ring cutting edge of the moving knife are always respectively located in the inner annular groove and the outer annular groove of the grinding position.
6. An arc-shaped cutter head assembly, characterized in that: It comprises a movable knife and a mesh cover, wherein the movable knife is formed by grinding using the grinding fixture described in any one of claims 1 to 5, and after grinding, the movable knife and the mesh cover are matched and ground to obtain the arc-shaped knife head assembly.
7. The arc-shaped cutter head assembly according to claim 6, characterized in that: Before the movable knife and the mesh cover are matched, the lowest point of the inner ring edge of the movable knife contacts the lowest point of the inner surface of the inner ring shaving part of the mesh cover, and the lowest point of the outer ring edge of the movable knife contacts the lowest arc point of the inner surface of the outer ring shaving part of the mesh cover; Grinding starts from the lowest point of the inner ring cutting edge and the lowest point of the outer ring cutting edge of the movable knife, reducing the removal amount of the movable knife during grinding, so that after grinding, the inner ring cutting edge and the outer ring cutting edge of the movable knife are in contact with the inner surface of the inner ring shaving part and the inner surface of the outer ring shaving part of the mesh cover.
8. A razor, characterized in that: The invention comprises the arc-shaped cutter head assembly as described in any one of claims 6 to 7.