Method for recording machining information on workpiece and shell for recording machining information

Abstract

The invention discloses a method for recording machining information on a workpiece and a shell for recording the machining information. The method for recording the machining information on the workpiece comprises the steps that at least one dot matrix area is selected on the workpiece; dividing information sub-regions in the dot matrix region according to types of processing information; and pre-determining a coding rule in each information sub-region, and processing information points or a combination of the information points in the information sub-region according to the coding rule to represent corresponding processing information. According to the method, the information points are adopted for recording the machining information, machining is convenient, efficiency is high, limitation of movement in the horizontal direction is avoided, the limitation that traditional lettering depends on continuous lines can be broken through, the material removal amount is reduced, machining loss is reduced, and the method is particularly suitable for fragile or miniature workpieces.

Description

Technical Field

[0001] The present invention belongs to the field of product processing, and in particular relates to a method for recording processing information on a workpiece and a shell for recording the processing information. Background Art

[0002] During the production and processing of housings for electronic devices and other products, it is often necessary to record information such as the processing date, equipment machine number, processing station number, processing shift, and supplier on the product housing. This information can generally be engraved directly on the housing using CNC machining to facilitate traceability. However, since the appearance and functional surfaces of the product cannot be engraved, the space available for recording this information on smaller product housings, such as the dials of bracelets and smart watches, is limited. Furthermore, the CNC tool head itself has a certain width, making it difficult to meet the spatial requirements for horizontal movement of the tool head during CNC machining of numbers and text, making it difficult to trace this information. Summary of the Invention

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a method and a housing for recording processing information on a workpiece.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A method for recording processing information on a workpiece, comprising the following steps:

[0006] S100, selecting at least one dot matrix area on a workpiece;

[0007] S200, dividing the dot matrix area into information sub-areas according to the type of processing information;

[0008] S300: Predetermine a coding rule in each of the information sub-regions, and process information points or a combination of information points in the information sub-region according to the coding rule to represent corresponding processed information.

[0009] Furthermore, the information dots are concave dots, and the concave dots are formed by CNC processing; or

[0010] The pits are formed by laser etching; or

[0011] The concave points are formed by electromagnetic pulse dotting.

[0012] Furthermore, the information points are convex points, which are formed by applying pressure to the metal surface through a mold to cause local plastic deformation of the material; or

[0013] The convex points are formed by punching with a punching machine and a positioning convex point mold; or

[0014] The convex points are formed by irradiating the metal surface with high-energy laser pulses to generate plasma shock waves, so that the material is locally bulged.

[0015] Furthermore, a material mark is formed at the position of the information point by a composite dotting function of multiple materials; the material mark is used to increase the accuracy of information point recognition; the multiple materials include one or more of conductive or magnetic materials, reflective or light-absorbing materials, temperature-sensitive materials or photosensitive materials.

[0016] Furthermore, the encoding rule uses one or more of the presence, position, spacing and combined shape of multiple information points to encode information; and / or

[0017] The coding rule adopts a layered redundant coding method, including core data for directly representing information and auxiliary data for enhancing anti-interference capability. The core data adopts a dense dot matrix, and the auxiliary data adopts a sparse dot matrix or microstructure features.

[0018] Furthermore, reference information points are provided in the dot matrix area, and the dot matrix area is divided into information sub-areas with the reference information points being used as reference positions.

[0019] A shell for recording processing information, wherein the processing information is formed on the shell by using any of the above methods for recording processing information on a workpiece.

[0020] Furthermore, the shell has a circular first groove, and a circular depression is formed at the bottom of the first groove, thereby forming a circular ring-shaped groove bottom in the first groove; at least one groove bottom of the first groove is selected as a dot matrix area, and at least one information sub-area is divided in the dot matrix area, and the information points in the information sub-area are arranged in sequence along the bending direction of the ring.

[0021] Furthermore, the shell has a second groove with a strip shape or an arc shape, and the bottom of at least one of the second grooves is selected as a dot matrix area; at least one information sub-area is divided in the dot matrix area, and the information points in the information sub-area are arranged in sequence along the axial direction of the strip or the bending direction of the arc.

[0022] Furthermore, the shell has a third groove with a rectangular or quasi-rectangular shape, and the bottom of the third groove is selected as the dot matrix area; the dot matrix area is divided into multiple information sub-areas along the axis direction of the rectangle or quasi-rectangle, and the information points in the information sub-areas are arranged in sequence along the direction perpendicular to the axis of the rectangle or quasi-rectangle.

[0023] In this invention, information dots are used instead of numbers and text to record processing information, making processing convenient and efficient. They are not limited by horizontal movement and transcend the limitations of traditional engraving, which relies on continuous lines. This reduces material removal and processing losses, making them particularly suitable for fragile or miniature workpieces. By using multiple materials to create material markings at the information dot locations, recognition accuracy is increased, anti-counterfeiting capabilities are enhanced, and visual recognition is facilitated. The use of conductive or magnetic materials also enables non-optical detection, overcoming the influence of substances such as oil stains. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 A schematic diagram of the structure of CNC machining in a groove of a dial.

[0026] Figure 2 This is a flow chart of an embodiment of a method for recording processing information on a workpiece according to the present invention.

[0027] Figure 3 A schematic diagram of selecting the first groove as the dot matrix area on the dial.

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0029] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0030] Figure 6 for Figure 3 Enlarged view of point C in the middle.

[0031] Figure 7 A schematic diagram of selecting the second groove as the dot matrix area on the dial.

[0032] Figure 8 for Figure 7 Enlarged view of point D in the middle.

[0033] Figure 9 for Figure 7 Enlarged view of point E in the middle.

[0034] Figure 10 for Figure 7 Enlarged view of point F in the middle.

[0035] Figure 11 Schematic diagram of selecting the third groove as the dot matrix area on the dial.

[0036] Figure 12 for Figure 11 Enlarged view of point G in the middle.

[0037] The accompanying drawings in this specification are numeraled as follows:

[0038] Dial - 100;

[0039] First groove 200; depression 201; first dot matrix area 210; first reference information dot 211; first information sub-area 212; second information sub-area 213; third information sub-area 214; second dot matrix area 220; second reference information dot 221; fourth information sub-area 222; fifth information sub-area 223; sixth information sub-area 224; third dot matrix area 230; third reference information dot 231; seventh information sub-area 232; eighth information sub-area 233; ninth information sub-area 234;

[0040] Second groove 300; fourth dot matrix area 310; fourth reference information dot 311; eleventh information sub-area 312; twelfth information sub-area 313; fifth dot matrix area 320; fifth reference information dot 321; thirteenth information sub-area 322; fourteenth information sub-area 323; sixth dot matrix area 330; sixth reference information dot 331; fifteenth information sub-area 332; sixteenth information sub-area 333;

[0041] Third groove 400; seventh dot matrix area 410; seventh reference information dot 411; eighth reference information dot 412; through hole 413; 21st information sub-area 414; 22nd information sub-area 415; 23rd information sub-area 416; 24th information sub-area 417; 25th information sub-area 418;

[0042] CNC tool-900. DETAILED DESCRIPTION

[0043] The following describes the implementation of the present invention through specific examples. The illustrations provided in the following embodiments are only used to schematically illustrate the basic concept of the present invention. The following embodiments and features in the embodiments may be combined with each other unless there is any conflict.

[0044] During the product manufacturing process, it's sometimes necessary to record processing information in a conveniently hidden location on the product casing to facilitate traceability. Since the post-production process for the product casing typically involves CNC machining of various technical features, processing information is typically engraved directly onto the casing during CNC machining to avoid adding additional processing steps. However, for smaller products, such as the dial 100 of a smartwatch, it can be difficult to find an area suitable for CNC machining of multiple characters.

[0045] See also Figure 1 The following uses a smartwatch dial 100 as an example to illustrate the problems with the existing method of direct CNC engraving. The dial 100 has four circular first grooves 200. This area will not be exposed on the finished surface of the smartwatch and can be used to record product processing information. However, since the radius of the first groove 200 is small and a circular depression 201 is formed at the bottom of the first groove 200, a circular groove bottom is formed; the width of the circular ring (i.e., the radius of the first groove minus the radius of the circular depression) is only slightly larger than 1mm, and the diameter of the CNC tool 900 is also about 1mm, which limits the horizontal movement space of the CNC tool 900, making it impossible for the CNC tool 900 to engrave on the circular groove bottom of the first groove 200 by horizontal movement.

[0046] See also Figure 2 , Figure 2 This is a flow chart of an embodiment of a method for recording processing information on a workpiece according to the present invention. The method for recording processing information on a workpiece according to this embodiment includes the following steps:

[0047] S100. Select at least one area on the workpiece as a dot matrix area. The dot matrix area is generally selected from the area where the existing structure of the workpiece is located, and this area will not be directly exposed to the outside after the workpiece is assembled into a finished product (such as the bottom area of ​​the groove), so as to prevent the information points on the dot matrix area from affecting the appearance of the product; at the same time, the structural function of the product cannot be affected after the area is dotted. In addition, the dot matrix area is preferably exposed by simple disassembly to facilitate viewing when needed. Based on the above requirements, it is not easy to find an area that meets the conditions on a smaller workpiece (such as the dial 100). There can be multiple dot matrix areas to facilitate the complete recording of the required processing information; of course, when the area of ​​the dot matrix area is large and can meet the requirements of recording the required processing information, only one dot matrix area can be selected.

[0048] S200. Divide the information sub-areas in the dot matrix area according to the type of processing information. The number of information sub-areas to be divided in the dot matrix area can be determined according to actual conditions; a dot matrix area can be divided into multiple information sub-areas, or only one information sub-area. The types of processing information generally include the processing date (generally only the "year" and "month" are recorded; of course, the "day" information can be added if necessary), the machine number, the line number (i.e. the number of the production line), the cavity number (i.e. the number of each cavity in the mold), the shift, etc. Since whether the position of each information point is dotted needs to be determined according to the actual situation of the processing information, it is impossible to determine whether the position of each information point will form an information point during actual processing. In order to form a fixed reference position, a fixed information point is generally set in the dot matrix area as a reference information point, so that the information sub-areas can be divided in the dot matrix area with the reference information point as the reference position.

[0049] S300: Predetermine an encoding rule within each information sub-region, and process information dots or a combination of information dots within the information sub-region according to the encoding rule to represent corresponding processing information. MEMS processing, femtosecond laser pulses, or nanoimprinting techniques can be used to achieve high-precision dot matrix processing, addressing thermal deformation and insufficient precision associated with traditional micro-scale engraving.

[0050] For digital information, information points can be considered binary numbers. Within the information sub-area, multiple information points are positioned sequentially in a predetermined direction, with each information point corresponding to a binary digit. For example, the rightmost information point is the least significant bit, and the information points are arranged sequentially from right to left, moving up to the most significant bit. When an information point is identified at its location, the digit is "1"; if it is not, the digit is "0." The last two digits of the year can be represented using a five-digit binary number, while the month can be represented using a four-digit or five-digit binary number. Machine numbers and line numbers can also be represented using binary numbers. Of course, when the value is small, the number can be directly represented by the number of information points. For example, for an information sub-area representing a cavity number, assuming there are four cavities in a mold, one information point can represent cavity number "1" (i.e., cavity "1"), two information points represent cavity number "2" (i.e., cavity "2"), three information points represent cavity number "3" (i.e., cavity "3"), and four information points represent cavity number "4" (i.e., cavity "4").

[0051] For non-numeric processing information, all possible information within the processing information can be treated as options, and each option can be assigned an information point location within the information sub-area. When an information point is identified at the location of the information point, it indicates that the option is selected; if an information point is not identified at the location of the information point, it indicates that the option is not selected. Of course, for processing information with only two options (i.e., option one and option two), only one information point location can be set. When an information point is identified at the location of the information point, it indicates that option one is selected; if an information point is not identified at the location of the information point, it indicates that option two is selected. For example, for an information sub-area representing shifts, if only "day shift" and "night shift" are distinguished, only one information point location can be set. When an information point is identified at the location of the information point, it indicates "night shift"; if an information point is not identified at the location of the information point, it indicates "day shift".

[0052] The information dots are generally concave dots, which can be formed by CNC processing to solve the problem that text cannot be engraved by CNC processing in a small space.

[0053] The pits can also be formed using laser etching. Laser etching reduces the amount of laser etching required, as etching information dots takes much less time than etching text. Multiple laser beams or array probes can also be used to simultaneously create pits at multiple locations, significantly improving processing efficiency. Non-laser etching can ensure consistent placement of pits using a floating jig, enabling non-contact, high-precision pitting and avoiding material deformation or damage caused by mechanical contact.

[0054] Alternatively, non-contact, high-precision dotting can be achieved using electromagnetic pulse dotting. Laser etching or electromagnetic pulse dotting facilitates dynamic energy regulation, allowing for real-time adjustment of laser power or pulse frequency based on material properties (metal / polymer), optimizing dot depth and shape (e.g., controlling the temperature of a laser-fixed heat sink).

[0055] Of course, when process conditions permit, the information dots can also be convex dots. The convex dots can be formed by applying pressure to the metal surface through a mold, causing local plastic deformation of the material. Of course, the convex dots can also be formed by punching using a punching machine and a positioning convex dot mold. Due to the extremely small size of the information dots, multiple information dot positions can be set on the positioning convex dot mold, so that multiple information dots can be formed in a single punching operation.

[0056] The bumps can also be formed by irradiating the metal surface with high-energy laser pulses to generate plasma shock waves, causing local bulges in the material. This method can avoid contact between the dotting equipment and the workpiece, and avoid losses through non-contact processing.

[0057] The positions of the information dots within the same information sub-area can be set at equal intervals, with the presence or absence of the information dots representing the processing information. Of course, if necessary, multiple information elements, such as the presence, position, spacing, and combined shapes of multiple information dots, can be combined to encode the information, thereby reducing the number of required information dots and the required size of the dot matrix area.

[0058] The coding rules can also adopt a layered redundant coding method, including core data for directly representing information and auxiliary data for enhancing anti-interference capabilities. The recognition results are corrected by the auxiliary data, and the algorithm can tolerate the absence or contamination of some information points to ensure the accuracy of information when using image recognition. The core data generally adopts a dense dot matrix (i.e., a dot matrix with a small spacing between information points), and the auxiliary data generally adopts a sparse dot matrix (i.e., a dot matrix with a large spacing between information points). The difference between the spacing between information points in the sparse dot matrix and the spacing between information points in the dense dot matrix can be determined based on the accuracy of image recognition. Of course, the auxiliary data can also adopt microstructural features (such as edge jaggedness).

[0059] The information points can be imaged by high-resolution imaging equipment (such as an optical microscope, a confocal laser scanner, or an electron microscope) and then identified by image recognition technology to identify the information points and the processing information represented by the information points. At this time, autofocus and multi-angle lighting modules (such as a ring-shaped LED light source) can be used to enhance the dot matrix contrast. During image processing, image preprocessing is first performed, which includes grayscale correction, noise filtering (such as Gaussian filtering), binary segmentation, and extraction of dot matrix areas. Afterwards, feature extraction and decoding are performed, and template matching or convolutional neural network (CNN) can be used to identify the dot matrix arrangement pattern. Finally, by designing decoding logic (such as positioning points and error correction coding that imitates QR codes), the positions of the information points in each detected information sub-area are mapped to corresponding text or numbers.

[0060] Of course, a standardized comparison card (such as a transparent plastic sheet) can also be designed so that the comparison card can be covered on the dot matrix area, and the coding information can be quickly determined through visual alignment, thereby realizing a manual rapid identification solution without detection equipment.

[0061] The information point locations can be marked with a material using a combination of multiple materials to increase the accuracy of information point recognition. For example, to facilitate accurate identification of information points using image recognition technology and facilitate visual identification of information numbers, the material markings can include special reflective or light-absorbing materials that exhibit different contrasts under natural light or flashlight illumination, facilitating visual recognition and increasing image recognition accuracy.

[0062] Furthermore, during workpiece processing, the surface of the workpiece may become contaminated with substances such as oil, making it difficult to accurately identify the information points. Therefore, the material marking can also include conductive or magnetic materials (such as low-silver graphene ink), allowing the use of Hall sensors or conductive probe arrays for non-optical detection, overcoming the effects of substances such as oil. The material marking can also include temperature-sensitive or photosensitive materials, allowing the information points to develop color or change physical properties under different environments (such as high-temperature color change or ultraviolet light development), thereby enhancing anti-counterfeiting capabilities.

[0063] In this embodiment, information dots are used instead of numbers and text to record processing information. This facilitates processing, is highly efficient, is not limited by horizontal movement, and reduces the space required to record processing information. This method breaks through the limitations of traditional engraving, which relies on continuous lines, reduces material removal and processing losses, making it particularly suitable for fragile or miniature workpieces. By using multiple materials to form a composite dot marking at the information dot location, identification accuracy is increased, anti-counterfeiting capabilities are enhanced, and visual recognition is facilitated. The use of conductive or magnetic materials also enables non-optical detection, overcoming the influence of substances such as oil stains.

[0064] The present invention also discloses a housing for recording processing information. The housing of the present invention is provided with processing information using the method for recording processing information on a workpiece as described in any of the aforementioned embodiments, thereby providing traceability information after the workpiece is processed into a finished product. The housing for recording processing information in this embodiment will be described below using a smartwatch dial 100 as an example. The following three implementations are possible for recording processing information on the dial 100.

[0065] Implementation Method 1

[0066] See also Figure 3 The front of the dial 100 has four circular first grooves 200. A circular depression 201 is formed at the bottom of each of the first grooves 200, thereby forming a circular ring-shaped groove bottom. In this embodiment, the groove bottoms of the three first grooves 200 are selected as three dot matrix areas, namely, a first dot matrix area 210, a second dot matrix area 220, and a third dot matrix area 230. Each of these three dot matrix areas is divided into at least one information sub-area, and the information dots in each information sub-area are arranged sequentially along the curvature of the ring.

[0067] Please continue reading Figure 1Because the width of the circular ring at the bottom of the first groove 200 is only slightly larger than the diameter of the CNC tool 900, the horizontal movement range of the CNC tool 900 is limited, making it difficult to directly engrave characters in the first groove 200 using CNC machining. However, CNC dotting only requires the CNC tool 900 to move up and down, so CNC machining is not subject to this limitation.

[0068] See also Figure 4 In this embodiment, a first reference information dot 211 is provided in the second dot matrix area 220. A first information sub-area 212 is divided on the left side of the first reference information dot 211, and a second information sub-area 213 and a third information sub-area 214 are sequentially divided on the right side of the first reference information dot 211. Figure 4 The dots in the information sub-areas in the subsequent figures only indicate the locations of information dots and do not necessarily indicate the presence of information dots at those locations (except for the reference information dots). The first information sub-area 212 is used to represent the machine number. Five information dots are located in the first information sub-area 212, representing five binary digits ("1," "2," "4," "8," and "16," respectively), and can represent a maximum of machine number "31." Table 1 shows how information dots are used to represent the two machine numbers "2#" and "25#":

[0069] Table 1

[0070]

[0071] The second information sub-area 213 is used to represent the line number. The second information sub-area 213 is provided with four information dots, which serve as four binary digits ("1", "2", "4", and "8"), respectively. The maximum number that can be represented is line number "15". Table 2 shows the method of using information dots to represent the two line numbers "1#" and "10#":

[0072] Table 2

[0073]

[0074] The third information sub-area 214 is used to represent the acupoint number. Four information dots are provided in the third information sub-area 214. In this embodiment, the acupoint number is represented by the number of information dots, which can meet the requirement of representing four acupoint numbers.

[0075] See also Figure 5In this embodiment, a second reference information dot 221 is provided in the second dot matrix area 220. A fourth information sub-area 222 is defined to the left of the second reference information dot 221, a fifth information sub-area 223 is defined to the right of the second reference information dot 221, and a sixth information sub-area 224 is defined in the area opposite the second reference information dot 221. The fourth information sub-area 222 is used to represent the last two digits of the "year" of the processing date. The fourth information sub-area 222 has positions for five information dots, each representing five binary digits, and can represent a maximum of "31," fully meeting the requirement for representing the "year" of a recent processing date. The fifth information sub-area 223 is used to represent the "month" of the processing date. The fifth information sub-area 223 has positions for four information dots, each representing four binary digits, meeting the requirement for representing 12 months. The sixth information sub-area 224 is used to indicate a shift. An information dot is provided in the sixth information sub-area 224. In this embodiment, the presence of an information dot at the position of the information dot indicates a night shift, and the absence of an information dot indicates a day shift.

[0076] See also Figure 6 In this embodiment, a third reference information dot 231 is provided in the third dot matrix area 230. A seventh information sub-area 232 is defined to the left of the second reference information dot 221, an eighth information sub-area 233 is defined to the right of the third reference information dot 231, and a ninth information sub-area 234 is defined in the area opposite the third reference information dot 231. The seventh information sub-area 232, the eighth information sub-area 233, and the ninth information sub-area 234 are respectively used to represent three outsourcing suppliers. Each of these three information sub-areas has an information dot position to indicate whether the supplier is the outsourcing supplier. Of course, if no outsourcing suppliers exist, the third dot matrix area 230 can be omitted.

[0077] Implementation Method 2

[0078] See also Figure 7 The back of the dial 100 has an arc-shaped second groove 300. The bottoms of the three second grooves 300 can be selected as three dot matrix areas, namely, the fourth dot matrix area 310, the fifth dot matrix area 320, and the sixth dot matrix area 330, without having to select the first groove 200 as the dot matrix area. Of course, if necessary, both the first groove 200 and the second groove 300 can be selected as dot matrix areas. Each of the three dot matrix areas is divided into at least one information sub-area, and the information dots in each information sub-area are arranged sequentially along the axis of the strip or the curvature of the arc.

[0079] Please continue reading Figure 7Since the width of the second groove 300 is relatively narrow, only slightly larger than the diameter of the CNC tool 900, the horizontal movement range of the CNC tool 900 is also limited, making it difficult to use CNC machining to directly engrave characters in the second groove 300. However, since CNC dotting only requires the CNC tool 900 to move up and down, CNC machining is not subject to the above limitations.

[0080] See also Figure 8 In this embodiment, a fourth reference information dot 311 is provided at the right end of the fourth dot matrix area 310, and an eleventh information sub-area 312 and a twelfth information sub-area 313 are sequentially divided to the left of the fourth reference information dot 311 along its axis. The eleventh information sub-area 312 is used to indicate the line number, and the eleventh information sub-area 312 has positions for four information dots, each serving as the four digits of binary. The twelfth information sub-area 313 is used to indicate the shift, and the twelfth information sub-area 313 has a position for an information dot. The presence of an information dot at this position indicates the night shift, and the absence of an information dot indicates the day shift.

[0081] See also Figure 9 In this embodiment, a fifth reference information dot 321 is provided at the left end of the fifth dot matrix region 320. A thirteenth information sub-region 322 and a fourteenth information sub-region 323 are sequentially divided to the right of the fifth reference information dot 321 along its axis. The thirteenth information sub-region 322 is used to indicate the machine number. Five information dot positions are provided in the thirteenth information sub-region 322, each representing a five-digit binary digit. The fourteenth information sub-region 323 is used to indicate the acupoint number. When there are only two acupoint numbers, one information dot position is provided in the fourteenth information sub-region 323. The presence of an information dot at this position indicates the right acupoint, while the absence of an information dot indicates the left acupoint.

[0082] See also Figure 10 In this embodiment, a sixth reference information dot 331 is provided in the center of the sixth dot matrix area 330. A fifteenth information sub-area 332 is defined on the left side of the sixth reference information dot 331, and a sixteenth information sub-area 333 is defined on the right side of the sixth reference information dot 331. The fifteenth information sub-area 332 is used to represent the last two digits of the "year" of the processing date. Five information dots are defined within the fifteenth information sub-area 332, each representing the five digits of binary system. The sixteenth information sub-area 333 is used to represent the "month" of the processing date. Four information dots are defined within the sixteenth information sub-area 333, each representing the four digits of binary system.

[0083] Implementation Method 3

[0084] See also Figure 11The side of the dial 100 includes a third, substantially rectangular groove 400. Because the third groove 400 is relatively large, the bottom of the third groove 400 can be selected as a dot matrix area, namely, the seventh dot matrix area 410, rather than the first and second grooves 200 and 300. Within the seventh dot matrix area 410, multiple information sub-areas are divided along the axis of the substantially rectangular shape. The information dots within each sub-area are sequentially arranged in a direction perpendicular to the axis of the rectangle or substantially rectangular shape.

[0085] Although the third groove 400 is larger in area than the first groove 200 and the second groove 300, it does not limit the horizontal movement range of the CNC tool 900 and can be directly engraved using CNC processing. However, due to the large space occupied by the text, the number of words that can be recorded is limited, and it is still difficult to meet the word count requirements when recording processing information. The space occupied by information dots is relatively small. The diameter of an information dot is generally only 0.2mm, and when using processing methods such as laser etching, the minimum can be as low as 10μm. The spacing between two adjacent information dots is generally 0.3mm to 0.5mm, which can be adjusted according to the size of the dot matrix area. In embodiment 1, the spacing between two adjacent information dots is set to 0.38mm; in embodiment 2, the spacing between two adjacent information dots is set to 0.33mm; and in embodiment 3, the spacing between two adjacent information dots is set to 0.42mm. Therefore, the space occupied when using information dots to record processing information is very small, and a single third groove 400 can meet the needs of recording all processing information. Of course, for auxiliary data, the spacing between information points can be increased to distinguish it from the core data; when the spacing between information points is also used as part of the encoding rule, the spacing between two adjacent information points can also be different.

[0086] See also Figure 12 Because a through hole 413 is provided in the middle of the third groove 400, the seventh dot matrix area 410 is divided into upper and lower parts. Therefore, a seventh reference information dot 411 is provided in the upper left corner of the seventh dot matrix area 410, and a twenty-first information sub-area 414 and a twenty-second information sub-area 415 are defined between the seventh reference information dot 411 and the through hole 413. An eighth reference dot is provided below the through hole 413 at a position corresponding to the seventh reference information dot 411. A twenty-third information sub-area 416 is defined to the right of the eighth reference dot, and a twenty-fourth information sub-area 417 and a twenty-fifth information sub-area 418 are defined below the eighth reference dot.

[0087] The 21st information sub-area 414 is used to indicate the line number. Five information dots are provided within this 21st information sub-area 414, each representing five binary digits. The 22nd information sub-area 415 is used to indicate the machine number. Five information dots are provided within this 13th information sub-area 322, each representing five binary digits. The 23rd information sub-area 416 is used to indicate the shift. One information dot is provided within this 23rd information sub-area 416. The presence of this dot indicates the night shift, while the absence of this dot indicates the day shift. The 24th information sub-area 417 is used to indicate the last two digits of the year in the processing date. Five information dots are provided within this 24th information sub-area 417, each representing five binary digits. The 25th information sub-area 418 is used to indicate the month in the processing date. Four information dots are provided within this 25th information sub-area 418, each representing four binary digits.

[0088] In this embodiment, processing information is recorded through information points, which takes up little space and is convenient for processing on a shell with a smaller size. The processing is convenient and easy to identify. The material processing information such as month and date, line body, machine number, etc. can be traced, and defective materials can be effectively traced.

[0089] The above embodiments merely represent preferred embodiments of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A method for recording processing information on a workpiece, characterized in that: The following steps are involved: S100, selecting at least one dot matrix area on a workpiece; S200, dividing the dot matrix area into information sub-areas according to the type of processing information; S300: Predetermine a coding rule in each of the information sub-regions, and process information points or a combination of information points in the information sub-region according to the coding rule to represent corresponding processed information.

2. The method for recording processing information on a workpiece according to claim 1, wherein: The information dots are concave dots, and the concave dots are formed by CNC processing; or The pits are formed by laser etching; or The concave points are formed by electromagnetic pulse dotting.

3. The method for recording processing information on a workpiece according to claim 1, wherein: The information points are convex points, which are formed by applying pressure to the metal surface through a mold to cause local plastic deformation of the material; or The convex points are formed by punching with a punching machine and a positioning convex point mold; or The convex points are formed by irradiating the metal surface with high-energy laser pulses to generate plasma shock waves, so that the material is locally bulged.

4. The method for recording processing information on a workpiece according to any one of claims 1 to 3, wherein: A material mark is formed at the position of the information point by a composite dotting function of multiple materials; the material mark is used to increase the accuracy of information point recognition; the multiple materials include one or more of conductive or magnetic materials, reflective or light-absorbing materials, temperature-sensitive materials or photosensitive materials.

5. The method for recording processing information on a workpiece according to any one of claims 1 to 3, wherein: The encoding rule uses one or more of the presence, position, spacing and combined shape of multiple information points to encode information; and / or The coding rule adopts a layered redundant coding method, including core data for directly representing information and auxiliary data for enhancing anti-interference capability. The core data adopts a dense dot matrix, and the auxiliary data adopts a sparse dot matrix or microstructure features.

6. The method for recording processing information on a workpiece according to any one of claims 1 to 3, wherein: Reference information points are set in the dot matrix area, and the dot matrix area is divided into information sub-areas with the reference information points as reference positions.

7. A housing for recording processing information, characterized in that: The shell is provided with processing information formed thereon by using the method for recording processing information on a workpiece according to any one of claims 1 to 6.

8. The housing for recording processing information according to claim 7, wherein: The shell has a first circular groove, and a circular depression is formed at the bottom of the first groove, thereby forming a circular ring-shaped groove bottom in the first groove; at least one groove bottom of the first groove is selected as a dot matrix area, and at least one information sub-area is divided in the dot matrix area, and the information points in the information sub-area are arranged in sequence along the bending direction of the ring.

9. The housing for recording processing information according to claim 7, wherein: The shell is provided with a second groove having a strip shape or an arc shape, and the bottom of at least one of the second grooves is selected as a dot matrix area; at least one information sub-area is divided in the dot matrix area, and the information points in the information sub-area are arranged in sequence along the axial direction of the strip or the bending direction of the arc.

10. The housing for recording processing information according to claim 7, wherein: The shell body is provided with a third groove having a rectangular or quasi-rectangular shape, and the bottom of the third groove is selected as the dot matrix area; the dot matrix area is divided into multiple information sub-areas along the axis direction of the rectangle or quasi-rectangle, and the information points in the information sub-areas are arranged in sequence along a direction perpendicular to the axis of the rectangle or quasi-rectangle.

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