3D Shaping Nozzle Control for Corner Precision
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Solution Overview
Problem
Existing three-dimensional shaping systems face challenges in maintaining shaping precision, particularly at locations where the nozzle's movement direction changes, leading to excessive material supply and inaccurate corner formations due to insufficient control over the nozzle's trajectory.
Innovation Solution
A three-dimensional shaping system that includes a control apparatus generating shaping data by analyzing path data to add stop commands when specific conditions are met, such as the length or angle of consecutive paths, to temporarily stop the nozzle's movement and close the material flow path, ensuring precise material distribution during trajectory changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the nozzle moves continuously according to shape data, then productivity is improved, but manufacturing precision deteriorates at corner portions due to excessive material supply and inaccurate trajectory
Solution Approach 1:
The control portion performs preliminary detection of path switching points in the shaping data before execution, and pre-prepares to adjust the material supply amount or stop supply at these locations. This preliminary action prevents excessive material accumulation at corner portions while maintaining continuous nozzle movement, thus resolving the contradiction between productivity and manufacturing precision.
2Productivity
If the material flow path is kept open during nozzle movement, then productivity is improved, but manufacturing precision deteriorates due to material discharge at path switching locations
Solution Approach 1:
The opening and closing mechanism performs periodic opening and closing operations synchronized with the nozzle's movement phases. The flow path is opened during linear movement segments and closed at path switching points, creating a periodic pattern that ensures precise material distribution while maintaining overall shaping speed. This periodic control resolves the contradiction between productivity and material distribution accuracy.
Data Source
AI summary
A three-dimensional shaping system includes a three-dimensional shaping apparatus and a control apparatus. The control apparatus analyzes path data including a plurality of paths indicating a route along which a nozzle moves relative to a shaping table of the three-dimensional shaping apparatus, and generates shaping data by adding a stop command to the path data in order to temporarily stop change of a relative position and temporarily close an opening and closing mechanism at the time of switching two consecutive paths, when a length of the two consecutive paths or an angle at which the two consecutive paths are connected satisfies a predetermined condition. The control portion of the three-dimensional shaping apparatus shapes a three-dimensional shaping object by controlling the opening and closing mechanism to open and close a flow path of a shaping material connected to the nozzle and a movement mechanism which changes the relative position between the shaping table and the nozzle, according to the shaping data.