3D Printing Discharge Control via Gap Feedback
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Solution Overview
Problem
Existing three-dimensional shaped object manufacturing methods face challenges in maintaining accurate discharge of resin materials due to environmental changes or plasticizing state variations, leading to potential gaps in the shaped object and reduced accuracy.
Innovation Solution
A method and device that involve shaping a three-dimensional object by discharging a material from a discharge unit towards a stage, measuring gaps between partial shaped objects, and adjusting the discharge amount based on differences between actual and intended gaps, using a control unit to manage the discharge unit, moving mechanism, and measurement unit, ensuring accurate layer formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the resin material is discharged based on predetermined discharge amount data, then the shaping process can proceed efficiently, but gaps may be generated in the shaped object due to environmental changes or plasticizing state variations
Solution Approach 1:
The patent implements a feedback mechanism where the actual discharge amount of resin material is measured and compared with the intended discharge amount. Based on the difference (gap) between actual and intended discharge amounts, the discharge amount data is corrected for subsequent paths. This closed-loop control ensures that environmental changes or plasticizing state variations are compensated in real-time, maintaining shaping accuracy while preserving processing efficiency.
Solution Approach 2:
The patent dynamically adjusts the discharge amount parameter based on measured gaps between adjacent partial shaped objects. By changing the discharge amount data for subsequent paths according to actual measurement results, the system adapts to variations in plasticizing state or environmental conditions, ensuring consistent shaping precision throughout the manufacturing process.
2Manufacturing precision
If the discharge amount is increased to fill gaps, then shaping accuracy improves, but material waste increases
Solution Approach 1:
The system measures the actual discharge amount and calculates the specific gap value between partial shaped objects. Instead of uniformly increasing discharge amount for all paths, the correction is applied only to the extent necessary to fill the measured gap. This precise feedback control ensures that material is added only where needed, improving shaping accuracy while minimizing material waste.
Solution Approach 2:
The patent applies discharge amount correction locally to specific paths where gaps are detected, rather than increasing material discharge universally. By targeting only the affected areas with additional material, the system achieves the necessary shaping accuracy while avoiding unnecessary material consumption in areas that are already correctly formed.
Data Source
AI summary
A three-dimensional shaped object manufacturing method for shaping a three-dimensional shaped object. The three-dimensional shaped object manufacturing method includes a first step of shaping a first partial shaped object corresponding to a first partial path and a second partial shaped object corresponding to a second partial path in accordance with shaping data including path data and discharge amount data; a second step of measuring a first gap indicating a gap between the first partial shaped object and the second partial shaped object; and a third step of executing an adjustment processing of adjusting, based on a difference between the first gap and a second gap determined based on the shaping data and corresponding to the first gap, a discharge amount in a third partial path which is one of the plurality of paths and along which the discharge unit moves after the first partial path and the second partial path.