Method for manufacturing a component for a timepiece, and component for a timepiece

Abstract

A method for manufacturing a watch component and a watch component that approximates the style of handcrafted items are provided. The method for manufacturing a watch component having a decorative area on the front side includes the following steps: For the decorative area, a laser is sequentially irradiated in an overlapping manner to depict multiple decorative patterns composed of multiple lines. At least one of the decorative patterns is configured such that multiple lines are randomly arranged with a width that is at least 80% and less than 200% of the diameter of the laser spot, and at least one of the multiple lines has a curved portion.

Description

Technical Field

[0001] This invention relates to a method for manufacturing watch components and watch components. Background Technology

[0002] Patent document 1 describes applying decoration by irradiating the inner and outer parts of a watch with a laser.

[0003] In Patent Document 1, laser light is sequentially irradiated onto the decorative areas on the front of the inner block and the outer block to overlap and depict multiple decorative patterns composed of multiple lines, thereby enabling the application of a pattern similar in style to hairline patterns.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2019-195979

[0005] In Patent Document 1, the decorative pattern is composed of a combination of straight lines. Therefore, when a laser is irradiated based on such a decorative pattern, straight lines are applied to the inner and outer blocks, thus creating a mechanical impression that is not close to the style of handmade products. Summary of the Invention

[0006] The method for manufacturing a watch component disclosed herein is a method for manufacturing a watch component having a decorative area on the front side, wherein the method includes the following steps: irradiating the decorative area with a laser in a manner that overlaps and depicts a plurality of decorative patterns composed of multiple lines, wherein at least one of the decorative patterns is configured such that the plurality of lines are randomly arranged with a width that is at least 80% and less than 200% of the diameter of the laser spot, and at least one of the plurality of lines has a curved portion.

[0007] The watch component disclosed herein is a watch component having a decorative area on the front, wherein grooves with random intervals, constant width, and partially curved are formed in the decorative area. Attached Figure Description

[0008] Figure 1 This is a perspective view showing the main parts of a clock in one embodiment.

[0009] Figure 2 This is an enlarged view showing the decorative area of ​​a clock component.

[0010] Figure 3 It is a diagram that represents a general outline of the first decorative pattern.

[0011] Figure 4 This is a diagram that represents a general outline of the second decorative pattern.

[0012] Figure 5 This is a diagram that represents a general outline of the third decorative pattern.

[0013] Figure 6 This diagram illustrates the process of forming curved sections on the lines that constitute the first decorative pattern.

[0014] Figure 7 This diagram illustrates the process of forming curved sections on the lines that constitute the first decorative pattern.

[0015] Figure 8 This diagram illustrates the process of forming curved sections on the lines that constitute the first decorative pattern.

[0016] Figure 9 It is an image obtained by enlarging a portion of the first decorative pattern.

[0017] Figure 10 It is an enlarged sectional view showing a portion of the decorative area of ​​a watch component.

[0018] Label Explanation

[0019] 1: Watch strap; 2: Middle block; 3: Outer block; 4: Watch strap body; 10: Connector; 21: Decorative area; 22: Groove; 22A: First groove; 22B: Second groove; 22C: Third groove; 23: Abrasive marks; 100: Watch; 110: Watch body; 111: Case; 112: Lug; 112A: Retaining plate; 112B: Retaining plate; 113: Body; 114: Glass edge; 115: Protective glass; 116: Case back; 210: First decorative pattern; 211: Line; 212: Control point; 213: Curved section; 214: Line; 215: Break; 216: Line; 216A: Curved section; 220: Second decorative pattern; 230: Third decorative pattern. Detailed Implementation

[0020] [Implementation Method]

[0021] Hereinafter, a clock 100 according to one embodiment of the present disclosure will be described with reference to the accompanying drawings.

[0022] Figure 1 This is a perspective view showing the main parts of the clock 100 according to the first embodiment.

[0023] like Figure 1 As shown, the clock 100 has a clock body 110 and a watch strap 1.

[0024] The main body of the clock 110 has a case 111 and lugs 112.

[0025] The housing 111 has a main body 113, a glass edge 114, a protective glass 115, and a back cover 116.

[0026] The main body 113 is a cylindrical component made of metal, and inside it are a dial, movement, etc. (not shown in the figure).

[0027] The glass edge 114 is a ring-shaped component made of metal, disposed on the upper part of the main body 113. The protective glass 115 is disposed to cover the upper side opening of the main body 113, is fixed by the glass edge 114, and covers the dial (not shown). The back cover 116 is a component made of metal, disposed to cover the lower side opening of the main body 113.

[0028] Lugs 112 are respectively positioned at the 6 o'clock and 12 o'clock positions on the main body 113. Furthermore, each lug 112 has a pair of retaining plates 112A and 112B protruding from the side of the main body 113. Moreover, retaining plates 112A and 112B are provided with holes (not shown), through which a spring bar (not shown) of the watch strap 1 is inserted to connect the watch body 110 and the watch strap 1.

[0029] [Watch Strap]

[0030] The watch strap 1 includes: a strap body 4, which is composed of a plurality of intermediate blocks 2 and an outer block 3 arranged to hold the intermediate blocks 2; and a connector 10, which is connected to both ends of the strap body 4 and mounted on a pair of retaining portions 112A, 112B. In this embodiment, the intermediate blocks 2, the outer blocks 3, and the connector 10 are made of metal components.

[0031] In addition, Figure 1 The diagram only shows the connecting member 10 of the retaining plates 112A and 112B installed at the 6 o'clock position on the clock 100.

[0032] Figure 2 This is an enlarged view of the decorative area 21 of the clockwork components.

[0033] In this embodiment, a decorative area 21 is provided on the front side of the watch components such as the housing 111, lugs 112, glass edge 114, middle block 2 of the watch strap 1, and outer block 3 (that is, the front side exposed when the watch body 110 is worn on the wrist).

[0034] The decorative area 21 is textured by laser, forming multiple grooves 22. Thus, the width H of each groove 22 constituting the texture is constant. Specifically, the width H of each groove 22 is ±10% or less relative to the laser spot diameter; that is, if the laser spot diameter is 25 μm, then it is 22.5 μm or more and 27.5 μm or less.

[0035] Here, the laser spot diameter refers to the diameter of the area on the decorative area 21 that is illuminated by the laser at a certain moment, which is regarded as a circle, for example, equivalent to the line width when drawing a straight line with a laser.

[0036] In addition, in the decorative area 21, besides the texture formed by the groove 22 as described above, there are also roughly circular abrasive marks 23.

[0037] Furthermore, details regarding laser-based texture processing will be described later.

[0038] [About texture processing methods]

[0039] Next, we will explain the method for texturing watch parts.

[0040] Figure 3 This is a schematic diagram representing the first decorative pattern 210. Figure 4 This is a schematic diagram representing the second decorative pattern 220. Figure 5 This is a schematic diagram representing the third decorative pattern 230.

[0041] like Figures 3-5 As shown, the first to third decorative patterns 210, 220, and 230 are composed of multiple lines. Furthermore, the watch component is textured by irradiating the decorative area 21 of the watch component with a laser along the lines of the first to third decorative patterns 210, 220, and 230. That is, the watch component is textured by sequentially irradiating the decorative area 21 of the watch component with a laser in a manner that overlaps the first to third decorative patterns 210, 220, and 230.

[0042] The following is a description of each decorative pattern 210, 220, and 230.

[0043] [First decorative pattern]

[0044] like Figure 3 As shown, the first decorative pattern 210 is composed of multiple lines. In this embodiment, the multiple lines constituting the first decorative pattern 210 are arranged so that they do not intersect each other and are randomly spaced. More specifically, the multiple lines are randomly arranged with a width that is more than 80% and less than 200% of the laser spot diameter. For example, when the laser spot diameter is 25 μm, the multiple lines are randomly arranged with a width that is more than 20 μm and less than 50 μm between the lines constituting the first decorative pattern 210.

[0045] By configuring multiple lines at random intervals within this range, it is possible to suppress excessively wide line spacing and include partially overlapping line segments, thus further enhancing the appearance of clutter. Therefore, it is possible to achieve a texture finish with a style close to handcrafted work.

[0046] Furthermore, in this disclosure, "configured in a random manner" refers to a state in which the intervals between the lines are not regular; more specifically, it refers to a state in which the lines are configured according to a random function.

[0047] Figures 6-8 This diagram illustrates the process of forming curved portions 213 on the lines constituting the first decorative pattern 210. In this embodiment, at least one of the lines constituting the first decorative pattern 210 has a plurality of curved portions 213.

[0048] like Figure 6 As shown, multiple control points 212 are set for the lines 211 that constitute the first decorative pattern 210. In this embodiment, six control points 212 are set as control points 212: first control point 212A, second control point 212B, third control point 212C, fourth control point 212D, fifth control point 212E, and sixth control point 212F.

[0049] In this embodiment, control point 212 is the coefficient of the NURBS (Non-Uniform Rational B-Spline) basis function, also referred to as a node.

[0050] Next, as Figure 7 As shown, control points 212A to 212F set on line 211 are moved in the X and Y directions. Furthermore, the X direction is the direction in which line 211 extends, and the Y direction is perpendicular to the X direction.

[0051] In this embodiment, each control point 212A to 212F is randomly moved in the X direction with a width of 20% to 30% of the laser spot diameter, and in the Y direction with a width of 20% to 30% of the laser spot diameter. For example, when the laser spot diameter is 25 μm, each control point 212A to 212F is randomly moved with a width of 5 μm to 7 μm in the X direction and 5 μm to 7 μm in the Y direction.

[0052] This allows for the depiction of subtle undulations in the lines, thus enabling a style closer to that of handcrafted items.

[0053] Furthermore, in this disclosure, random movement refers to a state in which the movement of each control point 212A to 212F is irregular; more specifically, it refers to a state in which the movement is determined by a random function.

[0054] Then, as Figure 8 As shown, line 211 is curved in such a way that it satisfies the NURBS curve with each control point 212A to 212F as a control point. That is, line 211 is curved by weighting the positions of the control points 212 placed before and after it at any point on line 211. As a result, a curved section 213 is formed on line 211. Thus, the curved section 213 is configured as a fifth-order curve.

[0055] In this embodiment, curved portions 213 are formed on all lines constituting the first decorative pattern 210. That is, the first decorative pattern 210 is composed of multiple lines having at least one curved portion 213 between one end and the other.

[0056] Furthermore, the first decorative pattern 210 is not limited to the structure described above, and may also be configured as a line without a curved portion 213. That is, the first decorative pattern 210 may also include: multiple lines formed by straight lines extending from one end to the other end; and multiple lines having at least one curved portion 213 between one end and the other end.

[0057] Figure 9 It is Figure 3 The image is an enlarged version of a portion of the first decorative pattern 210 shown.

[0058] like Figure 9 As shown, a portion of the line 214 that constitutes the first decorative pattern 210 is broken.

[0059] Here, line 214 is broken randomly with the length L of the break portion 215. More specifically, line 214 is broken randomly with the length L of the break portion 215 being an integer multiple of the minimum break length N. Moreover, in this embodiment, the minimum break length N is 30 μm. That is, a portion of the broken lines are configured such that the length L of the break portion 215 is an integer multiple of 30 μm.

[0060] Furthermore, in this disclosure, the line 214 can be broken in a random manner, for example, by the following: the length L of the broken portion 215 is an integer multiple of 30 μm and is determined according to a random function.

[0061] Furthermore, in a portion of the broken lines 216, the portion where the line length is less than or equal to a first threshold is bent into a curve to form a bend 216A. In this embodiment, the first threshold is 50 μm. Moreover, during texture processing, a texture is formed at the location along the bend 216A where a laser has been irradiated. Figure 2 The abrasive grain marks shown are 23.

[0062] Furthermore, such as Figure 9 As shown by the dashed lines, in a portion of the broken lines 216, lines whose length is below the second threshold are deleted. In this embodiment, the second threshold is set to 30 μm, which is less than the first threshold.

[0063] [Second decorative pattern]

[0064] like Figure 4As shown, the second decorative pattern 220 is composed of multiple lines as described above. In this embodiment, the lines constituting the second decorative pattern 220 are arranged with a wider spacing than the lines constituting the first decorative pattern 210. Furthermore, the lines constituting the second decorative pattern 220 are straight lines extending from one end to the other without intersecting each other. That is, in this embodiment, the second decorative pattern 220 is composed of multiple lines, which are straight lines extending from one end to the other.

[0065] [Third decorative pattern]

[0066] like Figure 5 As shown, the third decorative pattern 230 is composed of multiple lines as described above. In this embodiment, the lines constituting the third decorative pattern 230, like those of the first decorative pattern 210, are arranged so that they do not intersect each other and are randomly spaced. Furthermore, the lines constituting the third decorative pattern 230 consist of straight lines extending from one end to the other, and multiple straight lines that are partially broken. That is, the aforementioned curved portion 213 is not formed on the lines constituting the third decorative pattern 230.

[0067] [Texture processing using lasers]

[0068] Next, we will explain the texture processing using lasers.

[0069] Figure 10 This is an enlarged sectional view showing a portion of the decorative area 21 of a watch component.

[0070] First, a laser is irradiated onto the decorative area 21 of the watch component along the lines of the first decorative pattern 210. That is, the first decorative pattern 210 is stored as data in the laser processing machine, and the decorative area 21 of the watch component is irradiated with a laser according to this data. Thus, as... Figure 10 As shown, a first groove 22A is formed along the first decorative pattern 210 in the decorative area 21 of the watch component.

[0071] Next, a laser is irradiated onto the decorative area 21 of the watch component, which has the first groove 22A along the first decorative pattern 210, formed along the line of the second decorative pattern 220. At this time, the output of the irradiated laser is adjusted to be greater than when irradiating along the line of the first decorative pattern 210. As a result, a second groove 22B with a depth greater than the first groove 22A along the first decorative pattern 210 is formed in the decorative area 21 of the watch component.

[0072] Finally, the decorative area 21 of the watch component, which has a first groove 22A along the first decorative pattern 210 and a second groove 22B along the second decorative pattern 220, is irradiated with laser along the line pair of the third decorative pattern 230. In this embodiment, the output of the irradiated laser is adjusted to be the same as when irradiating laser along the line of the first decorative pattern 210. As a result, a third groove 22C with the same depth as the first groove 22A along the first decorative pattern 210 is formed in the decorative area 21 of the watch component. Furthermore, as described above, the width H of the first groove 22A, the second groove 22B, and the third groove 22C is 22.5 μm or more and 27.5 μm or less.

[0073] In addition, Figure 10 In this configuration, the first groove 22A, the second groove 22B, and the third groove 22C are formed without overlapping, but this is not a limitation. At least a portion of the first groove 22A, the second groove 22B, and the third groove 22C are formed in an overlapping manner.

[0074] Thus, in this embodiment, by sequentially irradiating the decorative area 21 of the clock component with laser light in a manner that overlaps and depicts the first to third decorative patterns 210, 220, and 230, a groove 22 with random intervals, a constant width H, and a portion that is curved is formed.

[0075] [Effects of the Implementation Method]

[0076] The following effects can be obtained from this embodiment.

[0077] In this embodiment, the first decorative pattern 210 is configured such that multiple lines are randomly arranged with a width that is more than 80% and less than 200% of the laser spot diameter, and the lines 211 have curved portions 213.

[0078] Therefore, by using a laser, grooves 22 with random spacing, constant width H, and partially curved shape can be formed on the decorative area 21 of the watch component. Thus, compared to applying straight patterns, it is possible to more closely resemble the style of handcrafting.

[0079] Furthermore, in this embodiment, the decorative area 21 of the watch component is sequentially irradiated with laser light in a manner that overlaps the first to third decorative patterns 210, 220, and 230.

[0080] As a result, at least a portion of the first groove 22A, the second groove 22B, and the third groove 22C are formed in an overlapping manner, thus creating areas where the spacing between the grooves 22 is smaller than the diameter of the laser spot. Therefore, a more detailed texture can be formed, thereby improving the decorative effect. Furthermore, since the color tone changes between the areas where the grooves 22 are formed in an overlapping manner and the areas where the grooves 22 are not formed in an overlapping manner, more complex and delicate textures can be formed.

[0081] In this embodiment, the curve portion 213 is formed based on a plurality of control points 212.

[0082] Therefore, it is possible to easily form curved sections 213 with complex shapes.

[0083] In this embodiment, the control point 212 moves in at least one of the X and Y directions with a width of 20% to 30% of the spot diameter.

[0084] This allows for the depiction of subtle undulations in the lines, thus enabling a style closer to that of handcrafted items.

[0085] In this embodiment, the first decorative pattern 210 and the third decorative pattern 230 have a break portion 215 where at least one line is broken, and the length of the break portion 215 is random.

[0086] Therefore, the groove 22 formed in the decorative area 21 of the clock component can be broken, and the length of the break can be randomized, thus making it closer to the style of handmade.

[0087] In this embodiment, in a portion of the broken wire 216, the portion of the wire with a length of less than 50 μm (the first threshold) is rolled into a curve to form a bent portion 216A.

[0088] Therefore, in addition to the groove 22, abrasive marks 23 can be formed in the decorative area 21 of the watch parts using a laser. This further reduces the mechanical feel and allows for a style closer to that of a handcrafted piece.

[0089] In this embodiment, in a portion of the disconnected lines 216, the lines at the locations where the length of the line is below the second threshold are deleted.

[0090] This makes the grooves 22 formed in the decorative area 21 of the watch component more uneven. Therefore, it can further reduce the mechanical feel and approach the style of handmade.

[0091] In this embodiment, when the laser is irradiated on the second decorative pattern 220 with the largest spacing along the line, the output of the laser is adjusted to the maximum.

[0092] This allows for a deeper second groove 22B formed in the decorative area 21 of the watch component, making the second groove 22B easier to observe. Consequently, the texture becomes clearer, thus enhancing the decorative effect.

[0093] [Variation Example]

[0094] Furthermore, this disclosure is not limited to the aforementioned embodiments, and modifications and improvements within the scope of achieving the purpose of this disclosure are included in this disclosure.

[0095] In the described embodiment, the laser is irradiated sequentially by overlapping the first decorative pattern 210, the second decorative pattern 220, and the third decorative pattern 230, but this is not a limitation. For example, the laser may be irradiated by overlapping two decorative patterns, or by overlapping four or more decorative patterns.

[0096] Furthermore, in the described embodiment, the laser is irradiated in the order of the first decorative pattern 210, the second decorative pattern 220, and the third decorative pattern 230, but this is not a limitation. For example, the laser may be irradiated in the order of the third decorative pattern, the second decorative pattern, and the first decorative pattern, or the order of the patterns in each decorative area may be interchanged.

[0097] In the described embodiment, a curved portion is formed on a part of the lines constituting the first decorative pattern 210, but this is not a limitation. For example, the laser may be irradiated in such a way that two or more decorative patterns consisting of lines with curved portions are drawn in overlapping manner.

[0098] In the described embodiment, six control points 212 are set for the lines 211 constituting the first decorative pattern 210, but this is not a limitation. For example, there may be three control points or fifteen control points; any number of control points is acceptable.

[0099] In the described embodiment, the multiple lines constituting the first decorative pattern 210 are randomly arranged with a width that is more than 80% and less than 200% of the diameter of the laser spot, but this is not a limitation. For example, the multiple lines constituting the first decorative pattern may also be randomly arranged with a width that is more than 0% and less than 200%. With this arrangement, the multiple lines are arranged so that they neither intersect nor overlap each other, thus enabling more refined texture processing.

[0100] In the described embodiment, in a portion of the broken line 216, the portion of the line whose length is less than or equal to a first threshold is bent into a curve to form a bend 216A, but this is not a limitation. For example, a bend may not be formed in a portion of the broken line. That is, abrasive marks may not be formed in the decorative area of ​​the watch component.

[0101] In the described embodiment, when the laser is irradiated on the second decorative pattern 220 with the largest spacing along the line, the laser output is adjusted to the maximum, but this is not a limitation. For example, the laser output may also be adjusted to be completely constant. That is, the depth of the groove formed in the decorative area of ​​the watch component may be set to be approximately constant.

[0102] Furthermore, the laser output can be adjusted in different ways for the first, second, and third decorative patterns. Alternatively, the laser output can be set to constant, while the relative speed between the laser and the decorative area 21 can be varied, or the distance between the laser source and the decorative area can be varied, thereby adjusting the irradiation energy in different ways.

[0103] In the described embodiment, examples of watch components include the case 111, lugs 112, glass edge 114, middle block 2 of the strap 1, and outer block 3, but the embodiment is not limited to these. For example, watch components with decorative areas may also include the dial, hour and minute hands, base plate, pendulum, and clasp.

[0104] In the described embodiment, although a decorative area 21 is provided on the front of the watch component, it is not limited thereto. The decorative area may be provided on the reverse side of the watch component, that is, the reverse side that contacts the wrist when the watch body 110 is worn on the wrist, or it may be provided on the side.

[0105] In addition, either a portion of the front of a watch component can be designated as a decorative area, or the entire front can be designated as a decorative area.

[0106] [Summary of this disclosure]

[0107] The method for manufacturing a watch component disclosed herein is a method for manufacturing a watch component having a decorative area on the front side, wherein the method includes the following steps: irradiating the decorative area with a laser in a manner that overlaps and depicts a plurality of decorative patterns composed of multiple lines, wherein at least one of the decorative patterns is configured such that the plurality of lines are randomly arranged with a width that is at least 80% and less than 200% of the diameter of the laser spot, and at least one of the plurality of lines has a curved portion.

[0108] This allows for the creation of randomly spaced, constant-width grooves, some of which are curved, on decorative areas of watch components using lasers. Therefore, this achieves a style closer to that of handcrafted pieces compared to applying straight lines.

[0109] Furthermore, since at least some of the grooves are formed in an overlapping manner, there are areas where the interval between the grooves is smaller than the diameter of the laser spot. Therefore, it is possible to form a more detailed texture, thus improving the decorative effect. Moreover, since the color tone changes between the areas where the grooves are formed in an overlapping manner and the areas where the grooves are formed in a non-overlapping manner, it is possible to form more complex and delicate textures.

[0110] In the method for manufacturing a watch component disclosed herein, the curved portion may also be formed based on multiple control points.

[0111] This allows for the easy formation of complex curved sections.

[0112] In the method for manufacturing a watch component disclosed herein, the control point may also be moved with a width of 20% or more and 30% or less of the diameter of the light spot.

[0113] This allows for the depiction of subtle undulations in the lines, thus enabling a style closer to that of handcrafted items.

[0114] In the method for manufacturing a watch component disclosed herein, at least one of the decorative patterns may have a broken portion of at least one of the plurality of lines, the length of which is random.

[0115] Therefore, it is possible to break the groove formed in the decorative area of ​​the watch component, and to make the length of the break random, thus further approaching the style of handmade.

[0116] In the method for manufacturing a watch component disclosed herein, a wire with a length of less than a first threshold among the wires having at least one of the said disconnected portions may be rolled into a curve to become a bent portion.

[0117] Therefore, in addition to grooves, abrasive marks can be formed on the decorative areas of watch components using lasers. This further reduces the mechanical feel, allowing the design to approach a handcrafted style.

[0118] In the method for manufacturing a watch component disclosed herein, it is also possible that lines having at least one of the disconnected portions whose length is less than a second threshold value is deleted.

[0119] This allows for more uneven grooves in the decorative areas of watch components. Consequently, it further reduces the mechanical feel and brings the style closer to that of handcrafted items.

[0120] In the method for manufacturing a watch component disclosed herein, the laser output may be adjusted to the maximum when the laser is irradiated along the decorative pattern with the largest line spacing among the plurality of decorative patterns.

[0121] This allows for a deeper groove in the decorative area of ​​a watch component, making the groove easier to observe. Consequently, the decorative effect is further enhanced.

[0122] The watch component disclosed herein is a watch component having a decorative area on the front, wherein grooves with random intervals, constant width, and partially curved are formed in the decorative area.

[0123] Thus, in watch parts decorated with lasers, it is possible to approximate the style of handcrafted items.

Claims

1. A method for manufacturing a watch component, the watch component having a decorative area on its front side, characterized in that... It has the following processes: The decorative area is irradiated with laser light in a manner that depicts a first decorative pattern composed of a first type of multiple lines; After the first decorative pattern is drawn, a laser is irradiated in such a way that a second decorative pattern composed of a second type of multiple lines is drawn over the first decorative pattern; and After the second decorative pattern is drawn, a laser is irradiated in a manner that overlaps the first and second decorative patterns to draw a third decorative pattern composed of a third type of multiple lines. At least one of the first decorative pattern, the second decorative pattern, and the third decorative pattern is configured such that the plurality of lines are randomly arranged with a width that is at least 80% and less than 200% of the diameter of the laser spot. At least one of the first type of multiple lines, the second type of multiple lines, and the third type of multiple lines has a curved portion. The first type of multiple lines, the second type of multiple lines, and the third type of multiple lines, the other two of which do not have the curved portion, but are composed of straight lines. The curved section is formed based on multiple control points, which are formed by moving the light spot diameter to both sides of a straight line with a width of more than 20% and less than 30%.

2. The method for manufacturing a watch component according to claim 1, characterized in that, At least one of the first decorative pattern, the second decorative pattern, and the third decorative pattern has at least one broken portion of the plurality of lines, the length of which is random.

3. The method for manufacturing a watch component according to claim 2, characterized in that, A line with at least one said break, whose length is less than the first threshold, is rolled into a curve to become a bend.

4. The method for manufacturing a watch component according to claim 3, characterized in that, A line with at least one break that has a length less than a second threshold (less than the first threshold) is deleted.

5. The method for manufacturing a watch component according to any one of claims 1 to 3, characterized in that, When the laser is irradiated along the decorative pattern with the largest line spacing among the first, second, and third decorative patterns, the laser output is adjusted to the maximum.

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