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Automatic planning method and system for increasing and decreasing alternate processes for composite manufacturing of adding and subtracting materials
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A technology for automatic planning, adding and subtracting materials, applied in instruments, data processing applications, design optimization/simulation, etc., and can solve problems such as low degree of automation and a large number of manual interventions
Active Publication Date: 2022-04-22
SHANDONG UNIV
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The geometric configuration of the application object of the above method is simple, and the key steps such as feature recognition and decomposition require a lot of manual intervention, and the degree of automation is low.
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Embodiment 1
[0050] In a typical implementation of the present invention, with reference to the parts shown in Fig. 2(a) and Fig. 2(b), an automatic planning method for increasing and decreasing alternate processes in composite manufacturing of increasing and decreasing materials includes the following content:
[0051] Based on the level set method, the preprocessing of the increasing and decreasing alternate process planning problem includes establishing the implicit level set function model of the part based on the material distribution, constructing several ordered level set sub-functions that mark the sub-process processing area, and establishing the additive head and tool The parameterized implicit level set function model of ;
[0052] Construct the problem model of process planning optimization, with the objective function of minimizing the part segmentation interface area, and the constraint conditions of processing integrity, additive head accessibility, and cutting tool accessibi...
Embodiment 2
[0101] This embodiment provides an automatic planning system for increasing and decreasing alternating processes for compound manufacturing of increasing and decreasing materials, including multiple modules, and the functions corresponding to each module correspond to the steps of the method disclosed in Embodiment 1, specifically as follows:
[0102] The first module is configured to construct an implicit level set function model of a part, a level set sub-function marking sub-process processing areas, and a parameterized implicit level set function model of an additive head and a tool;
[0103] The second module is configured to construct a process planning optimization problem model, with the objective function of minimizing the area of the part segmentation interface, and the constraints of processing integrity, additive head accessibility, and cutting tool accessibility;
[0104] The third module is configured to solve the objective function of the process planning optim...
Embodiment 3
[0109] This embodiment provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the automatic planning method for increasing and decreasing alternate processes for compound manufacturing of increasing and decreasing materials described in Embodiment 1 is implemented. . It should be noted that the computer-readable storage medium described in this embodiment includes: ROM, RAM, magnetic disk or optical disk, and other various media that can store program codes.
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Abstract
The invention discloses a method and system for automatic planning of increasing and decreasing alternating processes for compound manufacturing of increasing and decreasing materials, including: an implicit level set function model for constructing parts, a level set subfunction for marking sub-process processing areas, an additive head and The parameterized implicit level set function model of the cutting tool; the construction of the process planning optimization problem model, with the objective function of minimizing the part segmentation interface area, and the processing integrity, the accessibility of the additive head, and the accessibility of the cutting tool as the constraints; Solve the objective function of the process planning optimization problem and the sensitivity information of each constraint condition, and then obtain the evolution velocity field of the level set sub-function marking the sub-process processing area; update the level set sub-function marking the sub-process processing area, and perform process merging Judgment and operation, and then realize the evolution and merge update of the alternate process of increase and decrease; check the convergence condition, and use the optimal solution that meets the convergence condition as the obtained alternate process sequence of increase and decrease.
Description
technical field [0001] The invention relates to an automatic planning method and system for increasing and decreasing alternate processes for compound manufacturing of increasing and decreasing materials, and belongs to the field of compound manufacturing of increasing and decreasing materials. Background technique [0002] Additive / Subtractive Hybrid Manufacturing (Additive / Subtractive Hybrid Manufacturing) is an advanced composite manufacturing technology based on additive manufacturing technology and CNC subtractive manufacturing technology. Since the additive-subtractive composite manufacturing technology integrates the additive and subtractive manufacturing processes, this technology takes into account the advantages of the additive and subtractive manufacturing processes. One clamping can realize the integrated manufacturing of multi-features and multi-shaped surfaces, which can Directly obtaining mechanical parts with complex structures, shape accuracy and high surfac...
Claims
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