Indirect additive manufacturing installation and process

The indirect additive manufacturing installation and process address the challenges of maintaining part geometry by using a controlled binder projection and drop counting system, resulting in improved accuracy, productivity, and quality of the final parts.

FR3154636A1Pending Publication Date: 2025-05-02ECOLE NAT SUPERIEURE DES MINES DE PARIS +2
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Patent Information

Application Number
FR2023011801
Authority / Receiving Office
FR · FR
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-10-30
Publication Date
2025-05-02

AI Technical Summary

Technical Problem

Existing indirect additive manufacturing processes by projection of binding on a powder bed face challenges in maintaining the geometry of the final part due to dimensional changes during binder reticulation and sintering, leading to inaccuracies and reduced productivity.

Method used

An indirect additive manufacturing installation and process that includes a support, powder supply means, a printing head for selective binder projection, and a drop counting device to accurately measure and control the binder projection, allowing for precise geometric control and optimization of powder bed saturation.

Benefits of technology

The solution enables better control over the additive manufacturing process, improving the accuracy and consistency of part dimensions, increasing productivity, and optimizing the quality of the final parts by precisely managing the binder projection and powder bed saturation.

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Abstract

Indirect additive manufacturing installation (10) by spraying binder (16) onto a powder bed (14), comprising a support (12), a powder supply means (32) configured to form successive powder beds (14) on the support (12), a print head (18) configured to selectively spray binder (16) onto each successive powder bed (14), and a counting device (40) for the binder droplets (16) sprayed by the print head (18) onto the powder beds (14). Indirect additive manufacturing process by spraying binder onto a powder bed, comprising the formation of successive powder beds (14) on a support, the selective spraying of binder (16) onto each of the powder beds (14), the process further comprising counting the sprayed binder droplets. Figure for the abstract: Fig. 2
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Citation Information

Patent Citations

  • Apparatus and Methods for Servicing 3D Printers

    US20080252682A1