5 results about "Computer-aided manufacturing" patented technology

An ankle-foot orthosis having a foot plate defining a foot bed contoured to underlie the foot of the wearer, a flexible cuff configured to wrap around at least a portion of the shank of the wearer, and a strut assembly comprising a plurality of metal wires connecting the foot plate to the cuff. The plurality of metal wires may include piano wires. The foot plate may be fabricated with a computer aided manufacturing process.

The invention relates to a computer-aided manufacturing process (10) for manufacturing workpieces (12) on machine tools (14) with a numerical control (16), comprising the following process steps: a) Providing (20) a production order (22) for the production of several workpieces (12), wherein the production order (22) is designed as a numerical control program (18); b) Creating (26) manufacturing geometries (28; 28a, 28b) for the workpieces to be manufactured (12) from the manufacturing order (22) by evaluating the numerical control program (18); c) Creating (34) a geometry plan (36) for the manufacturing order (22) by determining relative positions between the manufacturing geometries (28; 28a, 28b); f) Identifying (50) and outputting manufacturing-related error sources (52) by evaluating the geometry plan (36).

The application discloses a material removal process replay and cutting force parallel simulation method based on an operation log, and belongs to the technical field of mechanical processing and computer-aided manufacturing. According to the total number of numerical control processing steps and a preset item capacity, a three-dimensional operation log system is initialized and a storage space is allocated. Then, the material removal operation parameters of a grid unit are recorded at a preset interval during the material removal process to form an operation record chain. Through log index positioning of the corresponding item, reverse material removal operation is performed, and an accurate target historical state is obtained through topological verification. Based on the sub-domain data, local cutting force is calculated and global cutting force curves are generated. The method provided by the application only records key operation parameters, dynamically allocates storage resources, and reduces storage overhead. Through log indexing and reverse operation, efficient and accurate state backtracking of any step is realized, the cutting force simulation efficiency is improved by combining parallel computing, and the problems of heavy storage burden, slow backtracking and low simulation efficiency of the traditional method are solved.

The application discloses a free curved surface direct-ruling reconstruction method, device and product based on a STEP form curved surface, and relates to the technical field of computer aided manufacturing processing. Firstly, the free curved surface is imported in the STEP form to obtain a digitized original STEP curved surface; then, on one hand, a direct-ruling line corresponding to the barycenter of the original STEP curved surface is obtained to serve as a reference direction; on the other hand, the original STEP curved surface is parameter-extended, a search path is selected, and sampling points are distributed to obtain a direct-ruling line corresponding to each sampling point under the condition of ensuring information integrity; thus, the direct-ruling line corresponding to the sampling point meeting the deviation requirement is screened according to the reference direction to realize fairing optimization; and then, the direct-ruling line corresponding to the reserved sampling point is used to quickly construct a target direct-ruling surface with simple geometric expression, smooth result and high precision through an end-point fitting mode in combination with the UV parameter range of the original STEP curved surface.

This invention discloses a robot milling posture optimization and trajectory compensation method based on a global stiffness model, belonging to the fields of robot precision machining and computer-aided manufacturing technology. It includes constructing a posture-dependent dynamic parameter prediction model for the entire workspace through sparse sampling, multidimensional discrete testing, and spatial interpolation modeling; completing redundant angle global planning based on surface topography prediction based on toolpath analysis, topography simulation, optimal search, and trajectory smoothing; and compensating for trajectory mirroring based on prediction errors through residual calculation, coordinate correction, and code generation. This invention, based on software algorithms, eliminates the need for expensive active / passive dampers or force sensors, making it applicable to various existing industrial robot machining units and facilitating low-cost upgrades of older production lines. Prediction efficiency is improved by orders of magnitude; the IDW interpolation-based modeling method reduces modeling time by more than 90%, making online process planning for complex surfaces possible.