3D Shaping Apparatus Table Positioning Control
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Solution Overview
Problem
Existing three-dimensional shaping apparatuses face challenges in achieving high accuracy and productivity in producing complex shaped articles through layer formation of powders.
Innovation Solution
A three-dimensional shaping apparatus with a support frame, material supply, and shaped article placing part, featuring independent drive and measurement systems, including ball screws, magnetic sensors, and a controller for precise control of the table's movement and posture, allowing for accurate and efficient layer formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a focused energy beam is used to sinter metal powder layers, then manufacturing precision is improved, but device complexity increases due to the need for precise positioning and control systems
Solution Approach 1:
The apparatus is divided into functionally independent modules: a movable table for powder layer positioning, a focused energy beam generation system, and a control unit. Each module operates semi-independently, allowing precise control of the sintering process while managing system complexity through modular design.
Solution Approach 2:
The control unit receives information about the forming process and adjusts the focused energy beam parameters accordingly. This feedback mechanism ensures high shaping accuracy by dynamically compensating for variations in the sintering process, while the automated control reduces operational complexity.
2Manufacturing precision
If the table position is precisely controlled with measurement and feedback systems, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The table positioning system incorporates measurement means that automatically detect position and provide feedback to the control unit. This self-monitoring capability achieves high positioning accuracy without requiring complex external measurement equipment or manual intervention.
Solution Approach 2:
The apparatus replaces complex mechanical positioning mechanisms with a combination of drive means and electronic control. The control unit processes measurement data and adjusts the table position electronically, reducing mechanical complexity while maintaining high positioning precision.
3Productivity
If multiple drive parts are used to control table movement in multiple directions, then productivity is improved, but device complexity increases
Solution Approach 1:
The drive system is segmented into multiple independent drive parts, each responsible for a specific degree of freedom (e.g., X-axis, Y-axis, Z-axis movement). This segmentation allows simultaneous control of table position in multiple directions, improving layer formation efficiency while keeping each drive unit relatively simple.
Solution Approach 2:
Each drive part is designed to be multi-functional, capable of performing acceleration, deceleration, and positioning operations. The control unit coordinates these universal drive components to achieve complex multi-directional table movement, reducing the need for specialized mechanisms for each function.
Data Source
AI summary
To provide a three-dimensional shaping apparatus excellent in accuracy and productivity. In a three-dimensional shaping apparatus 1, a shaped article placing part 4 includes a table 41 on the upper surface of which a shaped article is placed, a drive part 45 that drives the table 41, measurement parts 46 and 47 that measure the position of the table 41 or the position of a slider 42, and a controller 50 that controls the drive part 45 on the basis of measurement values from the respective measurement parts 46 and 47.