Watch parts, watches, methods for decorating watch parts

Abstract

To provide watch parts with a natural, textured surface created by laser processing. [Solution] The watch component is formed by irradiating the substrate with a pulsed laser to form a plurality of processing marks on the processed surface of the substrate, wherein the processed surface includes a textured region in which textured processing marks are formed and a plurality of regions that are not the textured region, and one of the plurality of regions is a first region in which a first linear pattern is formed by a plurality of straight lines consisting of processing marks extending in a first direction, and a second region is a region of the plurality of regions different from the first region in which a second linear pattern is formed by a plurality of straight lines consisting of processing marks extending in a second direction different from the first direction.

Description

Technical Field

[0001] The present invention relates to watch parts, a watch provided with the watch parts, and a method for decorating the watch parts.

Background Art

[0002] For example, Patent Document 1 discloses a processing method for forming a pattern having a matte feeling similar to that in the case of sandblasting by laser processing. According to this document, by using this processing method, rough surface processing similar to sandblasting can be performed to improve the aesthetic appearance of watch parts, and since multiple media and masking are not required as in sandblasting, productivity can be improved.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, there was room for improvement in the processing method of Patent Document 1. Specifically, according to the verification results of the inventors, etc., sandblasting forms by hitting metal balls against metal, and even if the overall finish is matte, glossy portions that shine depending on the direction remain, and it was found that this is one of the characteristics of a natural satin pattern. That is, there has been a demand for a method for decorating watch parts that can form a pattern similar to a natural satin pattern by laser processing.

Means for Solving the Problems

[0005] A watch component according to one aspect of the present invention is a watch component in which a plurality of processing marks are formed on the processed surface of a substrate by irradiating the substrate with a pulsed laser, wherein the processed surface includes a textured region in which a textured processing mark is formed and a plurality of regions that are not the textured region, and one of the plurality of regions comprises a first region in which a first linear pattern of a plurality of straight lines consisting of processing marks extending in a first direction is formed, and a second region in which a second linear pattern of a plurality of straight lines consisting of processing marks extending in a second direction different from the first direction is formed.

[0006] A clock according to one aspect of the present invention comprises the above-mentioned clock components.

[0007] A method for decorating a watch component according to one aspect of the present invention is a method for decorating a processed surface of a watch component using a laser, comprising the steps of: forming a textured region with a textured surface and a plurality of regions that are not textured regions on the processed surface; forming a first linear pattern consisting of a plurality of straight lines made of processing marks extending in a first direction in one of the plurality of regions; and forming a second linear pattern consisting of a plurality of straight lines made of processing marks extending in a second direction different from the first direction in a second region of the plurality of regions that is different from the first region. [Brief explanation of the drawing]

[0008] [Figure 1] Front view of the clock according to Embodiment 1. [Figure 2] Disassembled perspective view of the main components of the watch. [Figure 3] Back view of the watch. [Figure 4] A plan view showing the decorative treatment of the processed surface. [Figure 5] A flowchart illustrating the process of decorating watch components. [Figure 6] Schematic diagram of a laser processing device. [Figure 7] A photographic diagram showing one aspect of the machined surface in the embodiment. [Figure 8]A plan view showing the decorative treatment of the processed surface according to Embodiment 2. [Figure 9] A diagram showing the directions of the first to third directions. [Modes for carrying out the invention]

[0009] Embodiment 1 ***Watch Overview*** Figure 1 is a front view of a clock according to Embodiment 1. Figure 2 is an exploded perspective view of the main part of the clock. Figure 3 is a rear view of the clock. Embodiments of the present invention will be described below with reference to the drawings.

[0010] The watch 100 of this embodiment is a skeleton-structured analog three-hand mechanical wristwatch, equipped with an hour hand 3, a minute hand 4, and a second hand 5. The watch 100 has a built-in rotor 47 (Figure 3), and the rotation of the rotor 47 winds a mainspring (not shown), making it a so-called automatic winding wristwatch. The watch 100 also has a crown 7 at the 3 o'clock position and a power reserve hand 6 at the 12 o'clock position that indicates the remaining power of the mainspring. The outer case 8 of the watch 100 is a cylindrical body made of a hard metal such as titanium or stainless steel. Inside the outer case 8 are the dial 2 and the movement 30. Furthermore, watch 100 is not limited to automatic winding wristwatches; it may also be an electronic mechanical watch that uses electricity generated by the rotation of a rotor to charge a capacitor or other energy storage device for driving power, generates a reference clock using an oscillating circuit including an oscillator such as a quartz crystal oscillator, and drives the hands based on the reference clock. Alternatively, it may be a watch that generates power using a mainspring or the like as a power source, a watch that generates power by applying stress to a piezoelectric element, a watch that generates power using the electrostatic induction phenomenon, or a watch equipped with a solar cell.

[0011] As shown in Figure 2, the watch 100 is equipped with a skeletonized dial 2, and the internal movement 30 can be seen through the gaps in the dial 2. The dial 2 is constructed by overlapping a lower plate 41 and an upper plate 42. The lower plate 41 is composed of multiple frames arranged geometrically from the outer ring portion toward the interior. The upper plate 42 is composed of portions that protrude toward the interior from the outer ring portion, as well as arc-shaped frames, etc. A case back retaining plate 50 is provided on the upper surface of the movement 30. The case back retaining plate 50 is a disc-shaped member made of nickel silver and has multiple openings. Through the openings in the case back retaining plate 50, the escape wheel 31, balance wheel 33, balance bearing 34, and main plate 35 inside the movement 30 can be observed. In other words, the clock 100 is equipped with a case back retaining plate 50 as a clock component.

[0012] With this configuration, as shown in Figure 1, the hour hand 3, minute hand 4, second hand 5, dial 2, case back retaining plate 50, escape wheel 31, lever 32, balance wheel 33, balance bearing 34, etc., can be observed from the front of the clock 100 through the crystal glass 9. In this embodiment, a case back retainer plate 50 is used as an example of a watch component to be decorated. In Figure 1, a portion of the surface of the case back retainer plate 50 is exposed through an opening in the dial 2 near the 4 o'clock hour mark. In Figure 1, this rectangular exposed portion is shown as the processed surface 51. In the following description, the longer side of the processed surface 51 on the 12 o'clock side is also referred to as the upper side, the longer side on the 6 o'clock side as the lower side, the shorter side on the 3 o'clock side as the right side, and the shorter side on the 9 o'clock side as the left side.

[0013] As shown in Figure 3, the back of the watch 100 has a see-through back structure. More specifically, a transparent glass back cover 45 is attached to the back of the outer case 8. This allows the gear train bridge 46 and rotor 47 of the movement 30 to be observed through the glass back cover 45 from the back of the watch 100. Furthermore, the watch components are not limited to the case back retaining plate 50, but may be any metal parts that are visible from the outside, such as the band, outer case 8, crown 7, dial 2, or case back. In the case of a skeleton or see-through structure, the watch components may also be movement components 30 such as the main plate 35, gear train bridge 46, rotor 47, screws, and gears. Moreover, the material of the watch parts is not limited to German silver, and any metal suitable for each watch part is acceptable. For example, brass, titanium, stainless steel, copper, silver, aluminum, duralumin, cupronickel, pure iron, steel, or alloys thereof can be used.

[0014] ***Decoration Modes of Watch Parts*** FIG. 4 is a plan view showing the decoration mode of the processed surface, and is a plan view enlarging a part of the surface of the back cover pressing plate 50 in FIG. 2. As shown in FIG. 4, the processed surface 51 of the back cover pressing plate 50 is decorated with a decoration consisting of three regions: a satin finish region 10, a first region 11, and a second region 12 by laser processing. In other words, the back cover pressing plate 50 is a watch part in which a plurality of processing marks are formed on the processed surface 51 of the base material by irradiating the base material with pulsed laser.

[0015] The satin finish region 10 is a region with a matte pattern applied by a known laser processing method, and occupies more than half of the rectangular processed surface 51. In a preferred example, the area ratio of the satin finish region 10 on the processed surface 51 is 65% or more. This is to make the satin finish appearance as the main base. The first region 11 is a triangular region in the upper right of the processed surface 51, and a plurality of straight lines L1 extending in the first direction 61 are provided in a stripe shape. The straight line L1 is a shiny groove formed by the processing marks of laser processing. The processing method of the straight line L1 will be described later. The plurality of straight lines L1 have the same thickness and are provided in parallel at the same interval. The stripe pattern formed by the plurality of straight lines L1 is called the first straight line pattern.

[0016] The second region 12 is an elliptical region located within the textured region 10, and has multiple straight lines L2 extending in a second direction 62, which is different from the first direction 61, arranged in a stripe pattern. The straight lines L2 are glossy grooves formed by laser processing marks, and are the same as straight line L1 except for the direction of extension. The multiple straight lines L2 are of the same thickness and are arranged parallel to each other at the same intervals. This stripe pattern consisting of multiple straight lines L2 is called the second straight line pattern. In other words, the first straight line pattern and the second straight line pattern consist of multiple parallel straight lines at the same intervals. Also, the first straight line pattern and the second straight line pattern do not overlap. Furthermore, the shape and arrangement of the first region 11 and the second region 12 are not limited to the configuration shown in Figure 4, but can be set as appropriate according to the design, as long as the two regions do not overlap and there is a portion adjacent to the textured region 10.

[0017] In other words, the processed surface 51 of the backing plate 50 includes a textured region 10 on which textured processing marks are formed, and a plurality of regions that are not the textured region 10. One of the plurality of regions is a first region 11 on which a first linear pattern is formed by a plurality of straight lines L1 consisting of processing marks extending in a first direction 61, and a second region 12 on which a second linear pattern is formed by a plurality of straight lines L2 consisting of processing marks extending in a second direction 62 different from the first direction 61, in a region different from the first region 11. According to this method, a first region 11 of a first linear pattern that functions as a streaky glossy area is provided next to the matte region 10, which lacks gloss compared to a natural matte pattern. Furthermore, a second region 12 of a second linear pattern that functions as a streaky glossy area is provided within the matte region 10. As a result, a more natural matte pattern can be achieved than with conventional laser processing methods.

[0018] The angle between the first direction 61 and the second direction 62 is angle α. In Figure 4, angle α is 90 degrees. However, angle α is not limited to 90 degrees; it can be within 90 degrees ± 20 degrees, and more preferably within 90 degrees ± 10 degrees. In other words, the first direction 61 and the second direction 62 differ by within 90 degrees ± 10 degrees. In this way, by making the directions of the first and second linear patterns different, the two linear pattern regions can be observed as sparkling, glossy areas from various viewing angles. To widen the viewing angle for observing the glossy areas, it is good to set the angle α to 90 degrees, but it is preferable to keep it within the above range, taking into consideration the degree of design freedom.

[0019] ***Methods for decorating watch parts*** Figure 5 is a flowchart showing the process of decorating watch components. Figure 6 is a schematic diagram of the laser processing equipment. Here, the method for decorating the backing plate 50 will be explained, primarily using Figure 5, with other drawings included as appropriate.

[0020] In step S10, a backing plate 50 with a finished surface including the machined surface 51 is prepared. In a preferred example, a machining center is used as the processing device. A panelized substrate with multiple backing plates 50 mounted on it is set in the machining center, multiple openings are drilled and shaped, the outer shape is cut out, and then the surface is made to a plain state.

[0021] In step S11, a surface-mounted substrate with multiple backing plate holders 50 attached is set into the laser processing device. First, the configuration of the laser processing device 95 shown in Figure 6 will be explained. The laser processing apparatus 95 consists of a laser oscillator 81, a transmission optical system 82, an irradiation unit 83, a processing table 85, a control device 87, and the like. The laser oscillator 81 employs an infrared laser oscillator. In a preferred example, a solid-state laser oscillator compatible with pulsed lasers is used. However, it is not limited to this; any infrared laser oscillator is acceptable, and oscillators such as gas lasers, semiconductor lasers, and liquid lasers may also be used. The transmission optical system 82 is an optical path that transmits the laser light generated by the laser oscillator 81 to the irradiation unit 83, and is composed of multiple reflective mirrors.

[0022] The irradiation unit 83 is an irradiation nozzle that focuses laser light and irradiates it onto the workpiece, and is composed of a focusing lens. The processing table 85 is an XY table that, in accordance with instructions from the control device 87, moves the workpiece placed on it in a planar direction according to the scanning path pattern of the laser irradiation. As shown in Figure 6, the processing table 85 is set with a surface-mounted substrate 90 on which three backing plate 50 are mounted. The number of surface-mounted plates is not particularly limited; it may be one or more than three. The processing table 85 is provided with a pair of positioning pins (not shown) corresponding to a pair of reference holes 91 on the surface-mounted substrate 90, and the surface-mounted substrate 90 is fixed in a positioned state by this pair of positioning pins.

[0023] The control device 87 is the controller of the laser processing apparatus 95 and is composed of one or more processors, and it comprehensively controls the operation of each part. The control device 87 is equipped with a storage unit 88 that includes non-volatile memory. The storage unit 88 stores control programs that control the operation of the laser processing apparatus 95, as well as various data. The various data includes partition data that defines the range of the matte area, the first area 11, the second area 12, and other areas on the processing surface 51, as well as data such as irradiation conditions and scanning patterns for each processing area. The irradiation conditions include parameters such as energy density, output frequency, scanning speed, laser output, and scanning path pitch.

[0024] Next, in step S11, a textured area 10 (Figure 4) is formed on the surface of the backing plate 50. The extent of the textured area 10 is based on the partition data in the memory unit 88. Although Figure 4 shows the processed surface 51, which is a part of the surface of the backing plate 50, in reality, the textured pattern is also formed on other parts of the surface. The method for forming the satin finish area 10 is the same as the laser processing method of Patent Document 1. Specifically, when the spot diameter of the pulsed laser is set within the range of 12.5 μm or more and 200 μm or less, the scanning speed of the pulsed laser is V mm / s, the frequency of the pulsed laser is f kHz, and the overlapping portion length of the processing marks is α μm, the scanning speed V and the frequency f are set so as to satisfy the condition of α = R - V / f and 0 ≦ α < R, and the irradiation on-time for irradiating the pulsed laser and the irradiation off-time for not irradiating the pulsed laser are set randomly. In addition, there are also forming conditions such as the ratio of the total area of the processing marks to the processing area, etc., which conform to the description of Patent Document 1. Thereby, the matte-finished satin finish area 10 shown in FIG. 4 is formed.

[0025] In step S12, a first linear pattern is formed in the first area 11. Specifically, a plurality of straight lines L1 are sequentially irradiated along the first direction 61 by a nanosecond laser. The straight line L1 is formed as a linearly shiny groove by the processing trace due to the continuous irradiation of the laser. After forming the groove by irradiating with a nanosecond laser, the groove may be re-scanned and irradiated with a picosecond laser or a femtosecond laser to make the inside of the groove smoother and closer to a mirror finish. Alternatively, the laser output during groove processing may be suppressed during satin finish processing to obtain a smooth processed surface. Thereby, the first area 11 composed of the first linear pattern shown in FIG. 4 is formed.

[0026] In step S13, a second linear pattern is formed in the second area 12. Specifically, a plurality of straight lines L2 are sequentially irradiated along the second direction 62 by a nanosecond laser. The straight line L2 is formed as a linearly shiny groove by the processing trace due to the continuous irradiation of the laser. After forming the groove by irradiating with a nanosecond laser, the groove may be re-scanned and irradiated with a picosecond laser or a femtosecond laser to make the inside of the groove smoother. Thereby, the second area 12 composed of the second linear pattern shown in FIG. 4 is formed.

[0027] According to this decorative method, in step S11, the surface of the processed surface is roughened to form a base textured region 10; in step S12, a first region 11 consisting of a first linear pattern is formed to the upper right of the base region 10; and in step S13, a second region 12 consisting of a second linear pattern is formed within the textured region 10. The first linear pattern becomes a streaky glossy area extending in the first direction 61, and the second linear pattern becomes a streaky glossy area extending in the second direction. By combining these with the base textured region 10, which lacked glossy areas compared to a natural textured pattern, a natural textured pattern can be achieved overall. In other words, the method for decorating the backing plate 50 is a method for decorating the processed surface 51 of the backing plate 50 using a laser, and includes the steps of: forming a textured area 10 with a textured pattern and a plurality of areas that are not the textured area 10 on the processed surface 51; forming a first linear pattern consisting of a plurality of straight lines L1 made up of processing marks extending in a first direction 61 in a first area 11 of the plurality of areas; and forming a second linear pattern consisting of a plurality of straight lines L2 made up of processing marks extending in a second direction 62 different from the first direction 61 in a second area 12 of the plurality of areas that is different from the first area 11. In the above description, the first region 11 and the second region 12 are formed after the first region 10. However, the order is not limited to this, and it is sufficient to form three regions. For example, the first region 11 and the second region 12 may be formed first, and then the first region 10 may be formed.

[0028] ***Examples*** Figure 7 is a photographic view showing one aspect of the processed surface in the embodiment, and is an enlarged photographic view of the processed surface 51 processed by the decoration method described above. In the embodiment shown in Figure 7, a textured area 10b is provided on the upper half of the processed surface 51, a first area 11 is provided to the lower left of the textured area 10b, and a second area 12 is provided to the lower right of the textured area 10b.

[0029] In the example shown in Figure 7, the surface roughness Ra of the textured region 10b was measured to be Ra 0.5564 μm. The surface roughness inside the groove of straight line L2 in the second region 12b was Ra 0.1867 μm. The surface roughness of straight line L1 in the first region 11b was equivalent to that of straight line L2. Generally, an Ra of 0.2 or less is considered equivalent to a mirror finish, so it can be said that straight lines L1 and L2 can function sufficiently as glossy areas. In actual observation, a sparkling, glossy area formed by the first region 11 and the second region 12 was observed in a part of the base's textured area 10, resulting in an overall natural textured pattern.

[0030] As described above, the following effects can be obtained with the backing plate 50, the watch 100, and the decoration method as watch components of this embodiment. A case back retainer plate 50, a watch component, is formed by irradiating the base material with a pulsed laser to form multiple processing marks on the processed surface of the base material, wherein the processed surface 51 of the case back retainer plate 50 includes a matte region 10 on which matte processing marks are formed, and multiple regions other than the matte region 10, and one of the multiple regions is a first region 11 on which a first linear pattern is formed by multiple straight lines L1 consisting of processing marks extending in a first direction 61, and a second region 12 on which a second linear pattern is formed by multiple straight lines L2 consisting of processing marks extending in a second direction 62 different from the first direction 61, in a region different from the first region 11.

[0031] According to this, the first linear pattern is observed as a striped, glossy streak. When a second linear pattern, which is glossy and streaky in a different direction, is added to this, a sparkling glossy area is created from different viewing angles. Therefore, by combining the glossy streaks of the first and second linear patterns with the base matte area 10, a more natural matte pattern can be achieved than with conventional laser processing methods. Therefore, it is possible to provide a back-mount plate 50 for watch parts that has a natural, textured pattern created by laser processing.

[0032] Furthermore, the first and second straight line patterns do not overlap. According to this, the direction of light reflection that allows the glossy areas consisting of grain patterns to be visible can be organized, and the design can be controlled.

[0033] Furthermore, the first direction 61 and the second direction 62 differ by within 90 degrees ± 10 degrees. According to this, by changing the direction of the streaks in the two linear patterns, a sparkling, glossy area can be made visible from a wide viewing angle.

[0034] Furthermore, the first and second straight line patterns consist of multiple parallel lines spaced equally apart. According to this, since the spacing is the same, it is possible to form glossy areas with streaks of roughly uniform brightness. Conversely, the first and second linear patterns create glossy areas with different brightness levels by varying the depth and spacing within each linear pattern.

[0035] Furthermore, the clock 100 is equipped with a back-mount retaining plate 50 as a clock component. Therefore, it is possible to provide a watch 100 equipped with watch parts having a natural, textured pattern created by laser processing.

[0036] A method for decorating the backing plate 50 is a method for decorating the processed surface 51 of the backing plate 50 using a laser, and includes the steps of: forming a textured area 10 with a textured surface and a plurality of areas that are not the textured area 10 on the processed surface 51; forming a first linear pattern consisting of a plurality of straight lines L1 made up of processing marks extending in a first direction 61 in a first area 11 of the plurality of areas; and forming a second linear pattern consisting of a plurality of straight lines L2 made up of processing marks extending in a second direction 62 different from the first direction 61 in a second area 12 of the plurality of areas that is different from the first area 11.

[0037] According to this decorative method, in step S11, the surface of the processed surface is roughened to form a base textured region 10; in step S12, a first region 11 consisting of a first linear pattern is formed to the upper right of the base region 10; and in step S13, a second region 12 consisting of a second linear pattern is formed within the textured region 10. The first linear pattern becomes a streaky glossy area extending in the first direction 61, and the second linear pattern becomes a streaky glossy area extending in the second direction. By combining these with the base textured region 10, which lacked glossy areas compared to a natural textured pattern, a natural textured pattern can be achieved overall. Therefore, it is possible to provide a method for decorating watch parts that can form a natural, textured pattern using laser processing.

[0038] Embodiment 2 ***Different types of processed surfaces*** Figure 8 is a plan view showing the decorative finish on the processed surface according to Embodiment 2, and corresponds to Figure 4. Figure 9 is a diagram showing the directions of the first to third directions. In the above embodiment, the regions other than the textured region 10 were described as two regions, the first region 11 and the second region 12, but the invention is not limited to these, and there may be three or more regions. Hereafter, the same reference numerals will be used for parts identical to those in the above embodiment, and redundant explanations will be omitted.

[0039] As shown in Figure 8, in this embodiment, the processing surface 51 of the backing plate 50 is provided with a third region 13 in addition to the first region 11c and the second region 12c. The third region 13 is a triangular region in the lower left of the processing surface 51 and is provided with a third linear pattern consisting of multiple straight lines L3 extending in the third direction 73 (Figure 9). Furthermore, with the addition of the third region 13, the size and arrangement of the first region 11c and the second region 12c are slightly different from those in Figure 4, but the first region 11c is the triangular region in the upper right of the textured region 10c, and the second region 12c is the elliptical region provided within the textured region 10c, which remains the same. Furthermore, in Figure 8, the area ratio of the textured region 10c on the processed surface 51 is set to 65% or more in order to primarily feature the base textured appearance.

[0040] As shown in Figure 9, with the addition of the third region 13, the direction of the line L1 in the first region 11c becomes the first direction 71, and the direction of the line L2 in the second region 12c becomes the second direction 72. In the preferred example, the angle β between the first direction 71 and the second direction 72 is 60 degrees. Also, the angle θ between the second direction 72 and the third direction 73 is 60 degrees. Note that angles α and β are not limited to 60 degrees, but can be within the range of 60 degrees ± 10 degrees. In other words, the processed surface 51 further comprises a third region 13 in which a third linear pattern is formed, which is a processing mark consisting of multiple straight lines L3 extending in a third direction 73 different from the first direction 71 and the second direction 72.

[0041] Furthermore, although the above description mentions a configuration comprising three linear pattern regions—the first region 11c, the second region 12c, and the third region 13—in addition to the base textured region 10c, the configuration is not limited to three regions, and may include four or more n regions. In this case, the angular difference in the direction of each linear pattern shall be within the range of 180 degrees / n ± 10 degrees. In other words, it comprises a total of n linear patterns in each direction, including the first to third linear patterns, and the angular difference in each direction is within the range of 180 degrees / n ± 10 degrees. Furthermore, by adjusting the number of areas and arrangement of the linear patterns, as well as the angles of the linear patterns, geometric patterns such as the Widmanstätten structure can also be realized.

[0042] As described above, according to the backing plate 50, the watch 100, and the decoration method as watch components of this embodiment, in addition to the effects of the above embodiment, the following effects can be obtained. The processed surface 51 further comprises a third region 13 in which a third linear pattern is formed, which is a processing mark consisting of multiple straight lines L3 extending in a third direction 73 different from the first direction 71 and the second direction 72.

[0043] According to this, by incorporating the third region 13, it is possible to achieve a more natural pear-skin texture. Specifically, since the base pear-skin region 10c is combined with three streaky glossy areas with different directions, formed by the first straight line pattern, the second straight line pattern, and the third straight line pattern, a more natural pear-skin texture can be achieved. Therefore, it is possible to provide a back-mount plate 50 for watch parts that has a natural, textured pattern created by laser processing.

[0044] Furthermore, it includes a total of n linear patterns in each direction, including the first to third linear patterns, and the angular difference in each direction is within the range of 180 degrees / n ± 10 degrees. According to this, by including the nth region, it is possible to achieve a more natural-looking pearlescent pattern. Therefore, it is possible to provide a backing plate 50 as a watch component that has a natural-looking pearlescent pattern achieved by laser processing. [Explanation of Symbols]

[0045] 2…Dial, 3…Hour hand, 4…Minute hand, 5…Second hand, 6…Power reserve indicator, 7…Crown, 8…Case, 9…Crystal, 10…Textured area, 10b…Textured area, 10c…Textured area, 11…First area, 11b…First area, 11c…First area, 12…Second area, 12b…Second area, 12c…Second area, 13…Third area, 30…Movement, 31…Escape wheel, 32…Anchor, 33…Balance wheel, 34…Balance bearing, 35…Main plate, 41… 42...Bottom plate, 45...Top plate, 46...Back cover, 47...Gear train support, 50...Back material holding plate, 51...Processing surface, 61...First direction, 62...Second direction, 71...First direction, 72...Second direction, 73...Third direction, 81...Laser oscillator, 82...Transmission optical system, 83...Irradiation unit, 85...Processing table, 87...Control device, 88...Memory unit, 90...Plane-mounted substrate, 91...Reference hole, 95...Laser processing device, 100...Clock, L1...Straight line, L2...Straight line, L3...Straight line.

Claims

1. A watch component having multiple processing marks formed on the processed surface of a substrate by irradiating the substrate with a pulsed laser, The aforementioned processed surface is The pear-textured area where the processing marks of the pear-textured surface are formed, This includes multiple regions that are not the aforementioned textured regions, A first region in which a first linear pattern is formed by a plurality of straight lines consisting of processing marks extending in a first direction, A second region is formed in a region different from the first region among the plurality of regions, in which a second linear pattern consisting of multiple straight lines made of processing marks extending in a second direction different from the first direction is formed, A watch component equipped with these features.

2. The first linear pattern and the second linear pattern do not overlap. The watch component according to claim 1.

3. The first direction and the second direction differ by an angle of 90 degrees ± 10 degrees. The clock component according to claim 2.

4. The first linear pattern and the second linear pattern consist of multiple parallel lines at equal intervals. The clock component according to claim 2.

5. The present invention further comprises a third region in which a third linear pattern is formed, which is a processing mark consisting of multiple straight lines extending in a third direction different from the first and second directions. The clock component according to claim 2.

6. The system comprises linear patterns in a total of n directions, including the first to third linear patterns, The angular difference in each direction is within the range of 180 degrees / n ± 10 degrees. The clock component according to claim 5.

7. A clock component comprising the clock component described in any one of claims 1 to 6, clock.

8. A method for decorating the processed surface of watch parts using a laser, The process of forming a textured region with a textured surface and multiple regions that are not textured on the processed surface, A step of forming a first linear pattern consisting of multiple straight lines made of processing marks extending in a first direction in one of the multiple regions, A step of forming a second straight line pattern consisting of multiple straight lines, which are processing marks extending in a second direction different from the first direction, in a second region among the plurality of regions that is different from the first region, A method for decorating watch components, including the method described above.

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