Three-dimensional visual material distribution method for assembly line production

Abstract

The application provides a three-dimensional visual material distribution method for general assembly pipeline production, newly creates an assembly drawing in three-dimensional software and loads an assembly model; creates a station layer and names it according to pipeline production needs; performs cross-layer multi-station decomposition on materials of the assembly model; checks the created assembly model into a Windchill product library, and writes station material details into a Windchill data pool through XML; automatically builds a station BOM under the assembly BOM by reading the station material details and the station layer name, and sends MES and WMS; and sends data to an MES database table by creating a combination view and generating a lightweight model. The method has the advantages of realizing arbitrary combination of a same component single layer and different stations, material distribution of a same component multi-layer and multi-station, better coordination with production organization, and realization of station-level material taking and distribution.

Description

Technical Field

[0001] This invention relates to the field of intelligent manufacturing technology, and more specifically, to a three-dimensional visualization material allocation method for final assembly line production. Background Technology

[0002] In the field of mechanical manufacturing, traditional material allocation is very cumbersome. It often requires technicians to export plans from work orders and then offline, using Excel spreadsheets combined with 2D drawings and on-site experience, to break down and allocate materials to the production line by workstation. This method has the following drawbacks: ① High material mismatch rate, leading to frequent production line downtime; ② Uneven workstation load, with some workstations accumulating materials while others are waiting for materials; ③ Slow change response, where changes occur even after production has commenced, and production cannot respond promptly.

[0003] Existing patents, such as application number CN202411743986.1, entitled "A Material Management and Allocation Method Based on 3D Software," disclose a scheme for material palletizing based on a 3D model. Although it allocates materials by transferring details through pallet groups, thus solving the problem of material allocation visualization to some extent, it still has the following problems: ① Due to the strong correlation of 3D software, it cannot meet the requirement of arbitrary combination of different workstations at a single level of the same component for material allocation due to the influence of the modeling order; ② Due to the functional limitations of 3D software, it cannot solve the material allocation of multiple levels and multiple workstations of the same component through pallet grouping; ③ It cannot accurately express the production organization and assembly sequence; ④ It cannot realize the material requisition and distribution at the workstation level.

[0004] In order to solve the above problems, people have been seeking an ideal technological solution. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a three-dimensional visualized material allocation method for final assembly line production. This method enables arbitrary combination of different workstations at a single level for the same component, material allocation across multiple levels and workstations for the same component, better coordination with production organization, and workstation-level material retrieval and distribution.

[0006] To achieve the above objectives, the technical solution adopted by this invention is: a three-dimensional visualization material allocation method for final assembly line production, comprising the following steps: Create a new general assembly drawing in the 3D software and load the multi-level material models to be allocated into the general assembly model; In assembly mode, the layer tree display module is triggered through the user interface. According to the production needs of the assembly line, the workstation layer is created and named under the layer tree module according to the pre-selected structure to carry materials. Based on the material requirements of different workstations, the materials of the final assembly model are decomposed across multiple levels and workstations, and the workstation material details are extracted through the workstation layer. The created assembly model is checked into the Windchill product library, and the workstation material details are written into the Windchill data pool via XML. By reading the workstation material details and workstation layer name, and based on the position of the general assembly model in the Windchill product library, the workstation BOM is automatically built under the general assembly BOM, and the workstation material details are automatically sent to MES and WMS through Windchill. By creating a composite view and generating a lightweight model, the PLM interface is called to send the data to the MES database table, and then the data is uploaded to the specified path via an FTP server in PVZ format.

[0007] This invention utilizes the built-in layer tree display module of 3D software to create and name workstation layers. These workstation layers are used to hold materials, and their creation rules are based on the assembly relationships of various components in the overall assembly model. Therefore, the created workstation layers can be sorted according to the assembly sequence of the production line, providing a basis for the use and allocation of materials and parts. Based on the material details and workstation layer names, a workstation BOM is built in the Windchill product library, and the material workstation details are transmitted to MES and WMS, realizing workstation-level material requisition and allocation. This solves the problems encountered in traditional solutions when allocating materials across multiple levels or within a single level across multiple workstations. Simultaneously, a combined view is created for the overall assembly model, generating a lightweight workstation model through visualization, enabling visual applications and improving overall coordination with production organization.

[0008] Based on the above, the 3D software mentioned is Creo. Creo has a built-in layer tree module and opens up the related functions in the layer tree module, which is one of its standard functions. This is also the premise and foundation for this application to create and apply workstation layers.

[0009] Based on the above, "according to the needs of assembly line production" refers to the need for the assembly sequence in the assembly line production process.

[0010] Based on the above, the created workstation layers are sorted according to the assembly sequence of the production line.

[0011] The initial purpose of creating and naming workstation layers is to determine the assembly line process based on the assembly relationship of the entire product, and then determine the required workstation layers based on the assembly line process. The workstation layer itself has the sorting attribute of the assembly sequence, and then the parts can be decomposed across levels based on the material model, realizing the allocation of parts based on the production line.

[0012] Based on the above, the cross-level multi-station decomposition refers to the structural decomposition of the overall assembly model across levels according to the material requirements of each station, based on a layered tree structure, to obtain the assembly materials required for each station.

[0013] This method frees the materials required at each workstation from the influence of the modeling order, allowing them to break free from the modeling hierarchy of the overall assembly model, enabling cross-level component decomposition and material allocation according to the assembly process requirements in actual production.

[0014] This invention possesses significant substantive features and substantial advancements compared to existing technologies. Specifically, when considering using 3D software for material management and allocation, this invention is constrained by the modeling order of assemblies within the 3D software. For example, the layer tree display module unfolds according to the modeling approach, but in actual production assembly, material deployment follows the actual assembly sequence, which is inconsistent. Based on this premise, this invention utilizes the layer tree display module of 3D software to create a working layer as a carrier for materials. Then, it decomposes the overall assembly model into multiple levels and stores the required parts list according to the assembly sequence requirements of the production line. Finally, it relies on... The Windchill product library's functional BOM (Bill of Materials) for workstations, through the creation of combined views and the generation of lightweight models, ultimately achieves 3D visualized material allocation. This effectively solves the problems of existing technologies: the strong correlation and reference nature of 3D software, influenced by the modeling order, prevents the allocation of materials for arbitrary combinations of different workstations at a single level within the same component; the limitations of 3D software functionality prevent the use of pallet grouping to address material allocation across multiple levels and workstations for the same component; the inability to accurately represent production organization and assembly sequence; and the inability to realize workstation-level material requisition and distribution. Attached Figure Description

[0015] Figure 1 This is a flowchart of the three-dimensional visualization material allocation method for final assembly line production according to the present invention.

[0016] Figure 2 This is a schematic diagram of the working interface for establishing workstation layers and performing cross-level multi-workstation decomposition according to the present invention. Detailed Implementation

[0017] The technical solution of the present invention will be further described in detail below through specific embodiments.

[0018] like Figure 1 and Figure 2 As shown, a three-dimensional visualization material allocation method for final assembly line production includes the following steps: In Creo 3D software, a new general assembly drawing is created, and multi-level material models to be allocated are loaded into the general assembly model. In traditional solutions, only the 3D model of a single part is usually used for allocation. This solution uses the general assembly model as the basis for allocation. The general assembly model can reflect the overall structure of the entire large assembly component or the entire product. From a visualization perspective, it is more conducive to the overall planning and allocation of materials.

[0019] In assembly mode, the layer tree display module is triggered through the user interface. According to the needs of the production line, workstation layers are created and named under the layer tree module according to the pre-selected structure to carry materials. Here, according to the needs of the production line, it means that the assembly sequence of the production line is required. In this embodiment, the workstation layers are arranged according to the assembly sequence of the production line.

[0020] This function utilizes the free functionality of the layer tree display module in Creo. The initial intention behind creating the workstation layer and naming it is to determine the assembly line process based on the production and assembly relationship of the entire product, and then determine the required workstation layer based on the assembly line process. The workstation layer itself has the sorting attribute of the assembly sequence, and then it is possible to decompose the parts across levels based on the material model, realizing the allocation of parts based on the production line.

[0021] like Figure 2 As shown, based on the material requirements of different workstations, the materials of the final assembly model are decomposed across multiple levels and workstations, and the workstation material details are extracted through the workstation layer.

[0022] The aforementioned cross-level multi-station decomposition refers to the decomposition of the components of the overall assembly model. The decomposition process does not consider the constraints of hierarchical factors, but rather follows the order in the production assembly process to decompose and allocate the components at each station level.

[0023] The created assembly model is checked into the Windchill product library, and the workstation material details are written to the Windchill data pool via XML. By creating a workstation layer, an XML file containing the material workstation details will be automatically created.

[0024] By reading the workstation material details and workstation level name, and based on the position of the general assembly model in the Windchill product library, the workstation BOM is automatically built under the general assembly BOM, and the workstation material details are automatically sent to MES and WMS through Windchill; by building the workstation BOM, the material workstation details are automatically transmitted to MES and WMS, realizing workstation-level material requisition and allocation.

[0025] By creating a combined view and generating a lightweight model, the PLM interface is called to send data to the MES database table, and then the data is uploaded to a specified path via an FTP server in PVZ format. Specifically, this process involves creating a combined view of the overall assembly model including the workstation layer, automatically generating a lightweight workstation model through model-to-visualization, and finally sending it to the MES via Windchill.

[0026] This invention creates workstation layers in 3D software and adds the material models to be allocated to these layers. By extracting the workstation layer details and automatically generating the workstation BOM during Windchill check-in, the workstation details and lightweight workstation models are then distributed to MES and WMS via Windchill. This fundamentally solves the problem that 3D software, due to its highly correlated reference nature and the influence of the modeling order, cannot support arbitrary combinations of different workstations at a single level for material allocation within the same component. Furthermore, it enables multi-level, multi-workstation material allocation for the same component, clearly expressing the production organization and assembly sequence, and ultimately achieving workstation-level material requisition and distribution.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A three-dimensional visualization material allocation method for final assembly line production, characterized in that: Includes the following steps: Create a new general assembly drawing in the 3D software and load the multi-level material models to be allocated into the general assembly model; In assembly mode, the layer tree display module is triggered through the user interface. According to the production needs of the assembly line, the workstation layer is created and named under the layer tree module according to the pre-selected structure to carry materials. Based on the material requirements of different workstations, the materials of the final assembly model are decomposed across multiple levels and workstations, and the workstation material details are extracted through the workstation layer. The created assembly model is checked into the Windchill product library, and the workstation material details are written into the Windchill data pool via XML. By reading the workstation material details and workstation layer name, and based on the position of the general assembly model in the Windchill product library, the workstation BOM is automatically built under the general assembly BOM, and the workstation material details are automatically sent to MES and WMS through Windchill. By creating a composite view and generating a lightweight model, the PLM interface is called to send the data to the MES database table, and then the data is uploaded to the specified path via an FTP server in PVZ format.

2. The three-dimensional visualization material allocation method for final assembly line production according to claim 1, characterized in that: The 3D software mentioned is Creo.

3. The three-dimensional visualization material allocation method for final assembly line production according to claim 1, characterized in that: According to the needs of assembly line production, it refers to the need to follow the assembly sequence of the assembly line production.

4. The three-dimensional visualization material allocation method for final assembly line production according to claim 3, characterized in that: The created workstation layers are arranged according to the assembly sequence of the production line.

5. The three-dimensional visualization material allocation method for final assembly line production according to claim 1, characterized in that: The aforementioned cross-level multi-station decomposition refers to the structural decomposition of the overall assembly model across levels based on the material requirements of each station, in order to obtain the assembly materials required for each station.

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