Removable Detector Module for Laser Solidification Apparatus
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Solution Overview
Problem
Existing laser solidification apparatus face difficulties in aligning and maintaining measurement devices coaxially with the laser beam, requiring complex procedures that often necessitate breaching the laser-safe housing of the optical module, posing risks to operators and complicating maintenance and replacement processes.
Innovation Solution
The apparatus features a modular design allowing the detector module to be removed for cleaning, testing, or replacement without disassembling the optical module, with complementary mounting formations ensuring repeatable alignment within 10 micrometers or less, and a filter to prevent exposure to harmful laser light, enabling safe and efficient maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the measurement device is integrated into the optical module housing, then the alignment precision is improved, but the ease of maintenance deteriorates
Solution Approach 1:
The detector module is separated from the optical module housing, allowing the detector to be independently removed for maintenance while preserving the integrated alignment when mounted. This segmentation enables the detector to be cleaned, tested, or replaced without disassembling the optical module, resolving the contradiction between maintenance ease and alignment precision.
2Ease of repair
If the detector module is removable from the optical module, then the ease of maintenance is improved, but the alignment precision deteriorates
Solution Approach 1:
The detector module is pre-aligned with the optical axis during manufacturing and mounted using complementary mounting formations that ensure repeatable positioning within 10 micrometers. This preliminary alignment action allows the detector to be removed and remounted multiple times without requiring realignment, maintaining measurement precision while enabling easy maintenance.
3Ease of repair
If the optical module housing is breached for detector replacement, then the ease of maintenance is improved, but the safety deteriorates
Solution Approach 1:
The detector module is extracted from the optical module housing as a separate, self-contained unit with its own housing and mounting formations. This extraction allows the detector to be removed and replaced without breaching the optical module housing, maintaining safety by preventing exposure to harmful laser light while enabling easy maintenance through independent detector module handling.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design facilitates safe and efficient maintenance by allowing the detector module to be removed and remounted without realigning the optical axis, reducing the risk of exposure to laser light and minimizing errors due to data latency, while ensuring precise and repeatable mounting positions.
Implementation Method 1
an optical module housing containing a movable guiding element for directing a laser beam onto a material bed, the optical module housing having an outlet aperture therein though which the radiation emitted from the material bed is transmitted by the movable guiding element
Implementation Method 2
The optical module housing may comprise a filter for blocking light of a wavelength of the laser beam from passing out through the outlet aperture
Implementation Method 3
a laser beam is scanned across portions of the powder layer that correspond to a cross-section (slice) of the object being constructed. The laser beam melts or sinters the powder to form a solidified layer
Data Source
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AI summary
The invention concerns a laser solidification apparatus for building objects by layerwise solidification of material. The laser solidification apparatus comprises a build platform (102) for supporting the object (103) and a material bed (104), an optical module (157) comprising a movable guiding element (150) for directing the laser beam (118) to solidify material of the material bed (104), and a detector module (160) comprising a sensor (161) for detecting radiation emitted from the material bed (104) and transmitted to the sensor (161) by the movable guiding element (150) of the optical module (157). The detector module (160) is removably mounted to the optical module (157).