A mold reference hole numerical control lettering method and system

Abstract

The mold reference hole numerical control lettering method provided by the application is an automatic reference hole lettering programming method based on Siemens NX secondary development, and comprises the following steps: step S1, reference hole intelligent identification selection; step S2, machining process parameter configuration; step S3, automatic program generation and machining adaptation; and step S4, program integration and standardized machining. The application also provides a mold reference hole numerical control lettering system based on the mold reference hole numerical control lettering method, which can automatically identify reference hole values, create reference hole texts, create reference hole lettering programs, realize numerical control reference hole lettering, is favorable for improving the appearance of a mold, and is favorable for reducing the probability of occurrence of manual lettering safety accidents.

Description

Technical Field

[0001] This invention belongs to the field of CNC machining control technology. Specifically, this invention relates to a CNC engraving method and system for mold reference holes. Background Technology

[0002] With the development of the automotive industry and rapid technological innovation, user demands are becoming increasingly diversified, leading to a gradual increase in the complexity of automotive molds and thus increasing the difficulty of mold manufacturing. Against this backdrop, how CNC programming can drive the overall improvement of mold processing programming technology through technological innovation, providing safe, stable, and efficient programs, is of great significance for the automotive mold industry to overcome current challenges and improve mold manufacturing quality and production efficiency.

[0003] Currently, in the manufacturing process of stamping dies, it is usually necessary to design a reference hole on the die body as a reference for production, manufacturing and inspection. For ease of use, it is usually required to mark the coordinate values ​​(X), (Y) and (Z) of the reference hole on the reference hole platform. However, operators need to manually identify the coordinate values ​​of the two-dimensional drawing and manually use a steel stamp to strike the reference hole values ​​on the reference hole platform. Due to the limitations of the operator's skills, it takes a long time and is prone to errors.

[0004] Therefore, in order to improve or solve at least one of the above problems, a method and system for CNC engraving of datum holes for molds is provided, which can automatically identify the value of datum holes, create datum hole text, create datum hole engraving programs, realize CNC datum hole engraving, improve the aesthetics of molds, and reduce the occurrence of safety accidents caused by manual engraving. Summary of the Invention

[0005] This invention addresses the aforementioned problems and aims to provide a method and system for CNC engraving of reference holes in molds. This method and system can automatically identify reference hole values, create reference hole text, generate reference hole engraving programs, and achieve CNC reference hole engraving, thereby improving mold aesthetics and reducing the risk of safety accidents during manual engraving. To achieve the above objectives, the technical solution adopted by this invention is as follows: This invention provides a CNC engraving method for mold reference holes, characterized by the following steps: Step S1, intelligent identification and selection of reference holes; Step S2, configuration of processing parameters; Step S3, generation of automated program and processing adaptation; Step S4, program integration and standardized processing.

[0006] The CNC engraving method for mold reference holes provided by the present invention may also have the following features: in step S1, in response to the user operation, the mold reference hole to be engraved is selected, and the system automatically identifies the reference hole specifications based on the built-in feature recognition algorithm. It can be adapted to batch recognition of reference holes of various sizes and structural forms. At the same time, the diameter parameters, absolute coordinate values ​​and relative positional relationship of the reference hole relative to the mold body are collected to complete the pre-engraving feature data collection.

[0007] The CNC engraving method for mold reference holes provided by the present invention may also have the following features: In step S2, according to the engraving processing scenario of the mold reference hole, the engraving style, processing tool, tool axis parameters and safety height are configured. The appropriate engraving tool is automatically matched and selected from the preset tool library. All geometric parameters of the selected tool are read simultaneously. The CNC processing safety height is automatically calculated and set according to the overall geometric contour of the mold and the installation position of the reference hole. At the same time, the tool axis direction of the engraving processing is defined to avoid the risk of processing interference.

[0008] The CNC engraving method for mold reference holes provided by this invention may also have the following features: In step S3, a standardized CNC engraving machining program for reference holes is automatically generated based on the set engraving style, text parameters, tool parameters, tool axis parameters, and safety height parameters. The default engraving machining depth is set to 0.2mm. Z-axis coordinate values ​​can be marked according to project requirements. After the text is generated, the position of the text can be manually dragged and adjusted, and the rotation direction of the text can be adjusted by inputting angle values ​​to ensure that the text is consistent with the longitudinal direction of the reference surface and is displayed facing the outside of the mold.

[0009] The CNC engraving method for mold reference holes provided by the present invention may also have the following features: in step S4, the generated engraving processing program is automatically attached to the back end of the reference hole finishing process program, strictly ensuring that the engraving processing is performed after the reference surface finishing is completed, automatically checking the processing interference, actively providing feedback and warning when there is interference, and supporting access to the machine tool automatic tool setting unmanned machining system to realize standardized and automated CNC engraving operation of mold reference holes.

[0010] The CNC engraving method for the mold reference hole provided by the present invention may also have the following features: in step S2, the text angle and position correction standards must be met, the overall arrangement direction of the engraved text is always consistent with the length direction of the mold reference surface, and the engraved text faces the outside observation direction of the mold.

[0011] The CNC engraving method for mold reference holes provided by the present invention may also have the following features: in step S4, the generated reference hole engraving text parameters follow standardized and unified rules, the default engraving processing depth is fixed at 0.2mm, the text values ​​only retain integer or one decimal place format, all text annotations do not set positive or negative signs, and the system automatically completes the numerical standardization processing.

[0012] The CNC engraving method for mold reference holes provided by the present invention may also have the following feature: in step S4, the engraving process must be executed after the reference hole finishing process, and the engraving process is only performed on reference holes with a finishing reference surface, while reference holes without a complete finishing reference surface are automatically skipped from the engraving process.

[0013] This invention provides a CNC engraving system for mold reference holes based on the aforementioned CNC engraving method. The system comprises a reference hole identification module, a style setting module, a machining tool setting module, and a machining tool axis and safety height setting module. The reference hole identification module intelligently identifies the geometric features, position parameters, and specifications of the mold reference holes, analyzes suitable text placement parameters, and provides core data support for engraving programming. The style setting module customizes and matches the overall style standard for reference hole engraving, including engraving processing methods, text arrangement, layer placement rules, and text display modes. The machining tool setting module intelligently selects engraving tools and matches corresponding tool geometric process parameters to ensure engraving accuracy. The machining tool axis and safety height setting module standardizes the axial direction of the CNC engraving tool axis and automatically calculates an interference-free safety machining height based on the mold structure, ensuring a safe and stable engraving process.

[0014] The CNC engraving system for mold reference holes provided by this invention also has the following features: the style setting module supports two engraving processing modes, namely boss engraving mode and concave engraving mode. At the same time, it has a built-in engraving layer management unit for automatically dividing the engraving processing exclusive layer, realizing the hierarchical management and independent editing of the engraving program and other mold processing programs. It also has a built-in background standard process template retrieval interface, which can call general engraving process templates to complete rapid programming.

[0015] The technical effects of this invention are as follows: The CNC engraving method for mold reference holes provided by this invention is an automated reference hole engraving programming method based on Siemens NX secondary development, including the following steps: Step S1, intelligent identification and selection of reference holes; Step S2, configuration of processing parameters; Step S3, automated program generation and processing adaptation; Step S4, program integration and standardized processing. This invention also provides a CNC engraving system for mold reference holes based on the CNC engraving method for mold reference holes, which can automatically identify reference hole values, create reference hole text, create reference hole engraving programs, and realize CNC reference hole engraving, which is beneficial to improving the aesthetics of molds and reducing the probability of manual engraving accidents. Attached Figure Description

[0016] This manual includes the following figures, which illustrate the following: Figure 1 This is a flowchart of the CNC engraving method for the mold reference hole in an embodiment of the present invention; Figure 2 This is the operation interface of the CNC engraving system for the mold reference hole in an embodiment of the present invention; Figure 3 This is a diagram illustrating the effect of the automation program in an embodiment of the present invention.

[0017] The diagram is marked as follows: Detailed Implementation

[0018] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.

[0019] Figure 1 This is a flowchart of the CNC engraving method for the mold reference hole in an embodiment of the present invention; like Figure 1 As shown, the CNC engraving method for mold reference holes provided by this invention is an automated reference hole engraving programming method based on Siemens NX secondary development, including the following steps: Step S1, intelligent identification and selection of reference holes; Step S2, configuration of processing parameters; Step S3, automated program generation and processing adaptation; Step S4, program integration and standardized processing. This invention also provides a CNC engraving system for mold reference holes based on the CNC engraving method for mold reference holes, which can automatically identify reference hole values, create reference hole text, create reference hole engraving programs, and realize CNC reference hole engraving, which is beneficial to improving the aesthetics of molds and reducing the probability of manual engraving safety accidents.

[0020] In step S1, in response to the user's operation, the system selects the reference hole of the mold to be engraved. The system automatically identifies the specifications of the reference hole based on the built-in feature recognition algorithm. It can be adapted to batch recognition of reference holes of various sizes and structural forms. At the same time, the system collects the diameter parameters, absolute coordinate values ​​and relative positional relationship of the reference hole to the mold body to complete the pre-engraving feature data collection.

[0021] In step S2, based on the engraving scenario of the mold reference hole, the engraving style, machining tool, tool axis parameters and safety height are configured. The appropriate engraving tool is automatically matched and selected from the preset tool library. All geometric parameters of the selected tool are read simultaneously. The CNC machining safety height is automatically calculated and set according to the overall geometric contour of the mold and the installation position of the reference hole. At the same time, the tool axis direction of the engraving is defined to avoid the risk of machining interference.

[0022] In step S2, the text angle and position correction standards must be met, the overall arrangement direction of the engraved text must always be consistent with the length direction of the mold reference surface, and the engraved text must face the outside of the mold for observation.

[0023] In step S3, a standardized CNC engraving program for reference holes is automatically generated based on the set engraving style, text parameters, tool parameters, tool axis parameters, and safety height parameters. The default engraving depth is set to 0.2mm. Z-axis coordinate values ​​can be marked according to project requirements. After the text is generated, the position of the text can be manually dragged and adjusted, and the rotation direction of the text can be adjusted by inputting angle values ​​to ensure that the text is consistent with the longitudinal direction of the reference surface and is displayed facing the outside of the mold.

[0024] In step S4, the generated engraving program is automatically loaded onto the back end of the reference hole finishing process program to strictly ensure that the engraving is performed after the reference surface finishing is completed. The program automatically checks for machining interference and actively provides early warning when interference problems exist. It also supports integration into the machine tool automatic tool setting unmanned machining system to realize standardized and automated CNC engraving operations for mold reference holes.

[0025] In step S4, the generated reference hole engraving text parameters follow standardized and unified rules. The default engraving depth is fixed at 0.2mm. The text values ​​only retain integer or one decimal place format. All text annotations do not have positive or negative signs. The system automatically completes the numerical standardization process.

[0026] In step S4, the engraving process must be executed after the datum hole finishing process. The engraving process is only performed on datum holes with a finished datum surface. Datum holes without a complete finished datum surface are automatically skipped from the engraving process.

[0027] This invention provides a CNC engraving system for mold reference holes based on the aforementioned CNC engraving method, comprising a reference hole identification module, a style setting module, a machining tool setting module, and a machining tool axis and safety height setting module. The reference hole identification module intelligently identifies the geometric features, position parameters, and specifications of the mold reference holes, analyzes suitable text placement parameters, and provides core data support for engraving programming. The style setting module customizes and matches the overall style standard for reference hole engraving, including engraving processing methods, text arrangement, layer placement rules, and text display modes. The machining tool setting module intelligently selects engraving tools and matches corresponding tool geometric process parameters to ensure engraving accuracy. The machining tool axis and safety height setting module standardizes the axial direction of the CNC engraving tool axis and automatically calculates an interference-free safety machining height based on the mold structure, ensuring a safe and stable engraving process.

[0028] The reference hole recognition module includes a hole diameter recognition unit, a hole position recognition unit, and a text positioning algorithm unit. The hole diameter recognition unit is used to accurately measure the actual diameter of the reference hole to be processed, match the corresponding radial arrangement parameters such as the radial spacing of the text and the text size range according to the diameter of the reference hole, and at the same time assist in verifying whether the specifications of the reference hole meet the engraving processing standards and select reference holes that can be engraved normally. The hole position recognition unit is used to collect the absolute X, Y, and Z coordinate values ​​of the reference hole in the mold processing coordinate system in real time, locate the relative position of the reference hole with respect to the mold body and the reference plane, and provide data basis for text position correction. The text positioning algorithm unit is used to combine the reference hole diameter, position data and the shape of the mold reference surface to intelligently calculate the appropriate text size, text tilt angle and text center placement position to achieve accurate adaptation of the text with the reference hole and the reference surface.

[0029] The hole diameter recognition unit executes the engraving parameter judgment logic as follows: it divides the text layout specifications according to the measured reference hole diameter size gradient. Large-diameter reference holes are matched with large-sized text and a loose radial spacing, while small-diameter reference holes are matched with small-sized text and a tight radial spacing. At the same time, it sets an engraving accuracy threshold. When the reference hole coordinate value exceeds the range of one decimal place precision, it is judged as not meeting the engraving standard, automatic engraving is prohibited, and technical rectification prompts are actively fed back to the operator.

[0030] The position correction logic of the hole position recognition unit is as follows: by positioning the reference hole in the relative installation position of the mold body, insert, and punch, the standard reference hole and the lateral reference hole are distinguished. For special project process standards such as Volkswagen, the lateral reference hole of the body and the lateral reference holes of the insert and punch are identified. The lateral reference hole of the body is automatically determined not to be engraved, while the lateral reference holes of the insert and punch are engraved. At the same time, based on the mold casting deviation and the centering assembly deviation, the text placement position is adaptively fine-tuned to offset the processing and assembly errors.

[0031] The style setting module supports two engraving processing modes: raised engraving mode and recessed engraving mode. It also has a built-in engraving layer management unit, which is used to automatically divide the engraving processing into dedicated layers, so as to realize the hierarchical management and independent editing of the engraving program and other mold processing programs. In addition, it has a built-in background standard process template retrieval interface, which can call general engraving process templates to complete quick programming.

[0032] The machining tool setting module includes a tool selection unit and a tool parameter recognition unit. The tool selection unit has a built-in standardized engraving tool library, which stores special tool models suitable for engraving the reference holes of the mold, including KZD_D10_L55_J_RS2 or KZD_D10_L55_J_Z35-250 tools. It can automatically select the optimal matching tool according to the reference hole size, reference surface material, and engraving depth requirements, while also supporting manual switching of the selected tool. The tool parameter recognition unit is linked with the tool library data. After selecting the machining tool, it automatically reads and retrieves all geometric parameters of the tool, such as its length, diameter, cutting edge parameters, and machining adaptation parameters, and synchronously enters them into the CNC programming system to complete the automated configuration of tool parameters. This eliminates the need for manual parameter entry and avoids parameter entry errors.

[0033] The machining cutter axis and safety height setting module includes a cutter axis direction setting unit and a safety height setting unit. The cutter axis direction setting unit is used to adaptively define the axial direction of the CNC engraving tool according to the arrangement of the mold reference holes, i.e., horizontal reference holes or side reference holes. It matches the corresponding cutter axis deflection angle for side reference holes and horizontal reference holes respectively, ensuring that the tool is perpendicular to the engraving reference surface during machining. The safety height setting unit has a built-in mold geometric feature analysis model, which can automatically calculate and set the safe movement height and machining avoidance height for engraving based on the overall shape of the mold, the height of the reference hole protrusion, and the layout of the surrounding structure, effectively avoiding interference and collision between the tool and the mold body, inserts, and punch structure during machining.

[0034] Figure 2 This is the operation interface of the CNC engraving system for the mold reference hole in an embodiment of the present invention; like Figure 2 As shown, this invention provides a plugin developed based on NX for engraving reference holes. It includes the setting of the mold processing coordinate system in the software interface, the engraving method (boss / recess), CAD entity feature recognition, text display method, text arrangement, text position, and placement of engraving layers, the cutting tools used for engraving, the tool axis angle, etc. It also includes a background standard process template retrieval interface. By recognizing the features of the mold entity and retrieving the background standard engraving database, it realizes automated programming to generate reference hole programs and supports manual adjustment.

[0035] Figure 3This is a diagram illustrating the effect of the automation program in an embodiment of the present invention.

[0036] like Figure 3 The image shows the effect of the reference hole engraving program of this invention. The reference engraving template is invoked, and the reference plane (the reference platform requires precision machining) is selected. The default parameters are set as above. The default engraving depth is 0.2mm. The annotation type can be manually selected to include Z-values ​​(determined according to project requirements). The program selects the tool "KZD_D10_L55_J_RS2 or KZD_D10_L55_J_Z35-250" for machining. Clicking "Confirm" will generate the reference hole numerical text on the reference platform.

[0037] The text needs to be dragged with the left mouse button to adjust its position. After selecting a reference plane, the rotation direction of the text is adjusted by entering the angle value in the text angle field. For text engraving at different reference hole positions, the text angle needs to be rotated manually. The placement principles must be followed: the text must always be aligned with the longitudinal direction of the reference plane; the text should be aligned with the viewer's direction, meaning the engraving should appear upright when viewed from outside the mold. If the reference hole count is an integer or has one decimal place, the generated text will be output as an integer or one decimal place. If the number of reference holes exceeds one decimal place, engraving is prohibited, and technical feedback must be provided for modification. Furthermore, all text does not include plus or minus signs, and manual addition is not required.

[0038] The CNC engraving method and system for mold reference holes provided by this invention involve the following adjustment process: While generating text, an engraving knife program is automatically generated. After the text position is adjusted, the program is regenerated. The program is placed after the first machining reference hole program. Machining interference must be reported; it cannot be skipped entirely. The reference hole engraving program is placed after the first reference hole program, and the reference surface must be precision machined before engraving. The reference hole engraving program supports integration into automatic tool setting and unmanned operation. Engraving is only allowed on projects with reference surfaces; engraving is not allowed on projects without reference surfaces. Some projects have side reference holes, such as mass-market projects. Side reference holes on the main body are not engraved, while side reference holes on inserts or punches require engraving. The position adjustment of the engraving takes into account casting or centering deviations. To ensure aesthetically pleasing and consistent engraving, the default engraving size, spacing, and other parameters should not be changed without special circumstances.

[0039] The CNC engraving method for mold reference holes provided by this invention is an automated reference hole engraving programming method based on Siemens NX secondary development, including the following steps: Step S1, intelligent identification and selection of reference holes; Step S2, configuration of processing parameters; Step S3, automated program generation and processing adaptation; Step S4, program integration and standardized processing. This invention also provides a CNC engraving system for mold reference holes based on the CNC engraving method for mold reference holes, which can automatically identify reference hole values, create reference hole text, create reference hole engraving programs, and realize CNC reference hole engraving, which is beneficial to improving the aesthetics of molds and reducing the probability of safety accidents caused by manual engraving.

[0040] While generating text, an engraving program will be automatically generated. After the text position is adjusted, the program can be regenerated. It should be placed after the first machining reference hole program. Machining interference must be reported; do not simply skip engraving. The reference hole engraving program should be placed after the first reference hole program, and the reference surface must be precision machined before engraving. The reference hole engraving program supports integration into automatic tool setting and unmanned operation. Engraving should only be done on reference surfaces; engraving should not be done on surfaces without reference surfaces. Some projects have side reference holes, such as mass-market projects. Side reference holes on the main body should not be engraved, while side reference holes on inserts or punches should be engraved. The position adjustment of the engraving should consider casting or centering deviations. To ensure aesthetically pleasing and consistent engraving style, the default engraving size, spacing, and other parameters should not be changed without special circumstances.

[0041] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A CNC engraving method for a mold reference hole, characterized in that, Includes the following steps: Step S1: Intelligent identification and selection of reference holes; Step S2: Configure processing parameters; Step S3: Generate automated program and adapt to processing; Step S4: Integrate program and standardize processing.

2. The CNC engraving method for mold reference holes according to claim 1, characterized in that, In step S1, in response to the user's operation, the system selects the reference hole of the mold to be engraved. The system automatically identifies the specifications of the reference hole based on the built-in feature recognition algorithm. It can be adapted to batch recognition of reference holes of various sizes and structural forms. At the same time, the system collects the diameter parameters, absolute coordinate values ​​and relative positional relationship of the reference hole to the mold body to complete the pre-engraving feature data collection.

3. The CNC engraving method for mold reference holes according to claim 2, characterized in that, In step S2, based on the engraving scenario of the mold reference hole, the engraving style, machining tool, tool axis parameters and safety height are configured. The appropriate engraving tool is automatically matched and selected from the preset tool library. All geometric parameters of the selected tool are read simultaneously. The CNC machining safety height is automatically calculated and set according to the overall geometric contour of the mold and the installation position of the reference hole. At the same time, the tool axis direction of the engraving is defined to avoid the risk of machining interference.

4. The CNC engraving method for mold reference holes according to claim 3, characterized in that, In step S3, a standardized CNC engraving program for reference holes is automatically generated based on the set engraving style, text parameters, tool parameters, tool axis parameters, and safety height parameters. The default engraving depth is set to 0.2mm. Z-axis coordinate values ​​can be marked according to project requirements. After the text is generated, the position of the text can be manually dragged and adjusted, and the rotation direction of the text can be adjusted by inputting angle values ​​to ensure that the text is consistent with the longitudinal direction of the reference surface and is displayed facing the outside of the mold.

5. The CNC engraving method for mold reference holes according to claim 4, characterized in that, In step S4, the generated engraving program is automatically loaded onto the back end of the reference hole finishing process program to strictly ensure that the engraving is performed after the reference surface finishing is completed. The program automatically checks for machining interference and actively provides early warning when interference problems exist. It also supports integration into the machine tool automatic tool setting unmanned machining system to realize standardized and automated CNC engraving operations for mold reference holes.

6. The CNC engraving method for mold reference holes according to claim 5, characterized in that, In step S2, the text angle and position correction standards must be met, the overall arrangement direction of the engraved text must always be consistent with the length direction of the mold reference surface, and the engraved text must face the outside of the mold for observation.

7. The CNC engraving method for mold reference holes according to claim 5, characterized in that, In step S4, the generated reference hole engraving text parameters follow standardized and unified rules. The default engraving depth is fixed at 0.2mm. The text values ​​only retain integer or one decimal place format. All text annotations do not have positive or negative signs. The system automatically completes the numerical standardization process.

8. The CNC engraving method for mold reference holes according to claim 5, characterized in that, In step S4, the engraving process must be executed after the datum hole finishing process. The engraving process is only performed on datum holes with a finished datum surface. Datum holes without a complete finished datum surface are automatically skipped from the engraving process.

9. A CNC engraving system for a mold reference hole according to the CNC engraving method for mold reference holes according to claims 1 to 8, characterized in that, It includes a reference hole recognition module, a style setting module, a machining tool setting module, and a machining tool axis and safety height setting module; The reference hole recognition module is used to intelligently identify the geometric features, position parameters, and specifications of the reference holes in the mold, analyze the appropriate text placement parameters, and provide core data support for engraving programming. The style setting module is used to customize and match the overall style standard of the reference hole engraving, including the engraving processing method, text arrangement, layer placement rules, and text display mode. The machining tool setting module is used to intelligently select the engraving machining tool and match the corresponding tool geometric process parameters to ensure the accuracy of the engraving processing. The machining tool axis and safety height setting module is used to standardize the axial direction of the tool axis in CNC engraving processing, and automatically calculate the interference-free safety machining height in combination with the mold structure to ensure the safety and stability of the engraving process.

10. The CNC engraving system for mold reference holes according to claim 9, characterized in that, The style setting module supports two engraving processing modes: raised engraving mode and recessed engraving mode. It also has a built-in engraving layer management unit, which is used to automatically divide the engraving processing into dedicated layers, so as to realize the hierarchical management and independent editing of the engraving program and other mold processing programs. In addition, it has a built-in background standard process template retrieval interface, which can call general engraving process templates to complete rapid programming.

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