Fastener model rapid assembly method based on automatic model analysis

Abstract

The fastener model rapid assembly method based on automatic model analysis comprises the steps that (1) an automatic fastener model assembly tool is opened; (2) a fastening object model is selected, and the types, specifications, hole sites and assembly elements of fasteners in the fastening object model are automatically analyzed; 3) obtaining a corresponding fastener three-dimensional model from the fastener model library; 4) according to the fastener model name, automatically identifying the execution standard, the diameter specification and the length specification of the fastener, and automatically identifying the assembly elements of the fastener model; 5) setting the assembly direction of the fastener model; and (6) all fastener models in the fastening object model are automatically assembled through one key. According to the invention, the fastener model can be automatically and quickly assembled, so that the design working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of digital three-dimensional design, and in particular to a fast assembly method of a fastener model based on automatic model analysis. Background Art

[0002] There are a large number of fasteners on the spacecraft. In the traditional two-dimensional drawing era, designers need to draw typical views for each different assembly link. In the digital three-dimensional era, the fastener assembly relationship on the spacecraft is more directly displayed. In order to accurately guide production, the fasteners in the spacecraft three-dimensional model need to be fully installed. However, there are many fasteners in the spacecraft, and the workload of installing all fastener models in the spacecraft three-dimensional model is large, and most of them are low-level repetitive labor. Therefore, it is necessary to design a method that can quickly and accurately install fastener models to free designers from low-level repetitive labor. Summary of the invention

[0003] The object of the present invention is to provide a fastener model rapid assembly method based on automatic model analysis, so as to realize automatic and rapid assembly of fastener models.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a fastener model rapid assembly method based on model automatic parsing, comprising: 1) opening a fastener model automatic assembly tool; 2) selecting a fastening object model, and automatically parsing the required fastener category and specification, hole position, and assembly elements in the fastening object model; 3) obtaining a corresponding fastener three-dimensional model from a fastener model library; 4) automatically identifying the fastener execution standard, diameter specification, and length specification according to the fastener model name, and automatically identifying the assembly elements of the fastener model; 5) setting the assembly direction of the fastener model; 6) automatically assembling all fastener models in the fastening object model with one click.

[0005] In the above-mentioned method for rapid assembly of fastener models based on automatic model analysis, in the step 2), the fastener categories include screws, bolts, studs, nuts, spring washers, flat washers, threaded rods and pins.

[0006] In the above-mentioned method for rapid assembly of fastener models based on automatic model analysis, in said step 2), the specifications of the fasteners include diameter specifications and length specifications.

[0007] In the above-mentioned fast assembly method of fastener models based on automatic model analysis, in the step 2), the assembly elements include the upper surface of the ear piece of the fastening object, the central axis of the hole of the fastening object, and the lower bottom surface of the structure connected to the fastening object.

[0008] In the above-mentioned fast assembly method of fastener models based on automatic model analysis, in the step 4), the assembly elements of screws and studs are the mounting surface and the rotation surface; the assembly elements of spring washers, flat washers and nuts are the mounting surface, the mounted surface and the rotation surface; the assembly elements of screws and pins are the end face and the rotation surface.

[0009] The above-mentioned method for rapid assembly of fastener models based on automatic model analysis, wherein, for the spacecraft as a whole, the spacecraft model is decomposed into multiple fastener objects according to the structural design characteristics of the spacecraft, and all fastener models in the fastener object model are automatically assembled for each fastener object with one click, thereby realizing automatic and rapid assembly of fastener models.

[0010] Compared with the prior art, the beneficial technical effects of the present invention are:

[0011] The fastener model rapid assembly method based on model automatic analysis of the present invention can automatically analyze the fastener category and specification, hole position, and assembly elements in the fastening object model, and automatically assemble all fastener models in the fastening object model with one click, thereby realizing automatic and rapid assembly of fastener models, thereby improving design work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The fastener model rapid assembly method based on automatic model analysis of the present invention is provided by the following embodiments and drawings.

[0013] Figure 1 This is a flow chart of the fast assembly method of fastener models based on automatic model analysis of the present invention.

[0014] Figure 2 It is a schematic diagram of the analysis of a fastener in the fastening object model and the identification information of the fastener model in an embodiment of the present invention.

[0015] Figure 3 Schematic diagram of fastener assembly elements identified in an embodiment of the present invention.

[0016] Figure 4 It is a schematic diagram of the assembly process of all fastener models in the fastening object model in an embodiment of the present invention.

[0017] Figure 5 It is a schematic diagram of the assembly results of all fastener models in the fastening object model in an embodiment of the present invention.

[0018] Figure 6 Schematic diagram of the model tree after the spacecraft fastener model in an embodiment of the present invention completes automatic batch assembly. DETAILED DESCRIPTION

[0019] The following will be combined Figure 1 to Figure 6 The fastener model rapid assembly method based on automatic model analysis of the present invention is further described in detail.

[0020] Figure 1 Shown is a flow chart of the fast assembly method of fastener models based on automatic model analysis of the present invention.

[0021] See also Figure 1 The fastener model rapid assembly method based on automatic model analysis includes:

[0022] 1) Open the fastener model automatic assembly tool;

[0023] 2) Select the fastening object model and automatically analyze the required fastener category and specifications, hole positions, and assembly elements in the fastening object model;

[0024] Parse all the fasteners that need to be assembled in the fastening object model to obtain the types and specifications of the required fasteners, the corresponding hole positions of each fastener (i.e., which hole position in the fastening object model the fastener is used for), and assembly elements;

[0025] The type of fastener, such as screw, bolt, stud, nut, spring washer, flat washer, threaded rod, pin;

[0026] The specifications of the fastener include diameter specifications and length specifications;

[0027] The assembly elements, such as the upper surface of the ear piece of the fastening object, the lower bottom surface of the structure to which the fastening object is connected, the central axis of the hole of the fastening object, etc.;

[0028] 3) Obtaining a corresponding fastener three-dimensional model from a fastener model library;

[0029] 4) Automatically identify the fastener execution standard, diameter specification and length specification according to the fastener model name, and automatically identify the assembly elements of the fastener model;

[0030] The assembly elements of screws (studs) are the mounting surface and the rotating surface; the assembly elements of spring washers, flat washers, and nuts are the mounting surface, the mounted surface, and the rotating surface; the assembly elements of screws and pins are the end surface and the rotating surface;

[0031] 5) Set the assembly direction of the fastener model;

[0032] 6) Automatically assemble all fastener models in the fastening object model with one click.

[0033] For the spacecraft as a whole, the present invention can decompose the spacecraft model into multiple fastening objects according to the structural design characteristics of the spacecraft, and for each fastening object, all fastener models in the fastening object model can be automatically assembled with one click, thereby realizing automatic and rapid assembly of fastener models, thereby improving design work efficiency.

[0034] Figures 2 to 6Schematic diagram of a preferred embodiment of the present invention.

[0035] In this embodiment, all fasteners in the fastening object model are automatically parsed, and it is found that the fastening object has 16 M5 light holes, all of which use the QJ2582A single-sided flat spring washer combination. The fastening combination (i.e., the QJ2582A single-sided flat spring washer combination) includes a screw, a flat washer, and a spring washer. The screw pitch is 0.8 mm, the diameter is 5 mm, and the length is 18 mm. The thickness of the flat washer is 1 mm, and the thickness of the spring washer is 1.1 mm. Figure 2 ;

[0036] According to the fastener model naming, it is automatically recognized that the screw implementation standard is QJ2582A-2011, the specification is 16-screw M5×18, the flat washer implementation standard is GB / T 848-2002, the specification is 16-flat washer 5, and the spring washer implementation standard is QJ2963.3-1997, the specification is 16-spring washer 5. Figure 2 ;

[0037] Automatic identification of screw assembly elements such as Figure 3 As shown, the assembly elements of the screw are the mounting surface 1 and the rotation surface 2;

[0038] One-click automatic assembly of all fastener models in the fastening object model. The assembly process is as follows: Figure 4 As shown, the assembly result is Figure 5 shown.

[0039] Figure 6 Model tree after automated batch assembly for the spacecraft fastener model.

Claims

1. A fast assembly method for fastener models based on automatic model analysis, characterized in that: include: 1) Open the fastener model automatic assembly tool; 2) Select the fastening object model and automatically analyze the required fastener category and specifications, hole positions, and assembly elements in the fastening object model; 3) Obtaining a corresponding fastener three-dimensional model from a fastener model library; 4) Automatically identify the fastener execution standard, diameter specification and length specification according to the fastener model name, and automatically identify the assembly elements of the fastener model; 5) Set the assembly direction of the fastener model; 6) Automatically assemble all fastener models in the fastening object model with one click.

2. The fastener model rapid assembly method based on model automatic analysis according to claim 1, characterized in that: In the step 2), the fastener categories include screws, bolts, studs, nuts, spring washers, flat washers, threaded rods and pins.

3. The fastener model rapid assembly method based on model automatic analysis according to claim 1, characterized in that: In the step 2), the specifications of the fastener include diameter specifications and length specifications.

4. The fastener model rapid assembly method based on model automatic analysis according to claim 1, characterized in that: In the step 2), the assembly elements include the upper surface of the ear piece of the fastening object, the central axis of the hole of the fastening object, and the lower bottom surface of the structure connected to the fastening object.

5. The fastener model rapid assembly method based on model automatic analysis according to claim 1, characterized in that: In the step 4), the assembly elements of screws and studs are the mounting surface and the rotating surface; the assembly elements of spring washers, flat washers and nuts are the mounting surface, the mounted surface and the rotating surface; the assembly elements of screws and pins are the end face and the rotating surface.

6. The fastener model rapid assembly method based on model automatic analysis according to claim 1, characterized in that: For the spacecraft as a whole, according to the structural design characteristics of the spacecraft, the spacecraft model is decomposed into multiple fastening objects, and all fastener models in the fastening object model are automatically assembled for each fastening object with one click, thereby realizing automatic and rapid assembly of fastener models.

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