Dynamic compensation method for distance between FDM 3D printing hot bed and spray head

CN119526762APending Publication Date: 2025-02-28WANJIANG INST OF TECH
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Patent Information

Application Number
CN202411571731.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-06
Publication Date
2025-02-28

AI Technical Summary

Technical Problem

In the existing FDM 3D printing technology, the distance between the hot bed and the nozzle cannot be accurately quantified and dynamically adjusted, resulting in insufficient adhesion of the first layer, affecting the stability of the entire printing process and the quality of the final product.

Method used

The combined detection method of eddy current sensor and camera is used to perform high-precision scanning and printing line width detection on the surface of the hot bed, and dynamically adjust the spacing between the nozzle and the hot bed to achieve accurate control of the printing line width.

Benefits of technology

It significantly improves the uniformity of printing lines, improves printing quality, solves the problems of low accuracy and inability to dynamically adjust traditional leveling methods, and provides strong technical support for high-quality FDM 3D printing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a dynamic compensation method for the distance between an FDM 3D printing hot bed and a spray head, and the method comprises the following steps: S1, selecting a point on the hot bed as a reference point, measuring the distance L between the reference point and an eddy current sensor, and measuring the distance H (x, y) of any point between the eddy current sensor and the hot bed, so as to obtain the height delta H (x, y) = L-H (x, y) of the surface of the hot bed relative to the reference point; s2, performing horizontal scanning on the hot bed by using an eddy current sensor, and printing a test line in a scanning area; s3, shooting the test line through a camera, and preprocessing a shot image; according to the dynamic compensation method for the distance between the FDM 3D printing hot bed and the spray head, the Z axis is dynamically compensated according to the result of joint detection of the eddy current sensor and the camera, so that the uniformity of printing lines is remarkably improved, and the printing quality is effectively improved.
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Citation Information

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