Laser-Transmitting Optomechanical Tooling for Low-Force Machining
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Solution Overview
Problem
Current light-assisted machining tools face limitations in minimizing tooling forces, improving surface finish, and enhancing the machinability of diverse materials such as ceramics, semiconductors, and metals, while also maintaining the integrity of the workpiece.
Innovation Solution
The development of an optomechanical tooling system that utilizes a laser-transmitting machining tool with a specific configuration of surfaces and angles, including a rake face and flank face, to minimize tooling forces and improve surface finish by precisely controlling the laser beam's entry and exit angles, and using a heat-activated cutting fluid to promote ductile material removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional light-assisted machining tools are used, then machining capability is provided, but tooling forces are not minimized and surface finish is not improved
Solution Approach 1:
The tool is divided into distinct functional surfaces: a rake face for material removal, a flank face for clearance, and a light beam entrance face for optical energy input. This segmentation allows each surface to be optimized independently for its specific function, enabling minimized tooling forces through proper rake face geometry while simultaneously achieving improved surface finish through controlled light interaction at the entrance face.
Solution Approach 2:
Different surfaces of the tool are given different geometric properties and orientations tailored to their specific functions. The rake face has specific angles for efficient cutting, the flank face has clearance angles to prevent rubbing, and the light beam entrance face has specific orientation angles for optimal light coupling. This local quality optimization resolves the contradiction by allowing each surface to contribute to either force reduction or surface finish improvement without compromising the other.
2Productivity
If machining parameters are optimized for material removal, then removal rate increases, but workpiece integrity is compromised
Solution Approach 1:
The invention merges mechanical cutting action with light-assisted processing in a single integrated tool structure. The light beam entrance face is integrated with the rake and flank faces, allowing simultaneous delivery of mechanical cutting forces and optical energy to the workpiece. This combination enables enhanced material removal rates through photothermal or photomechanical effects while maintaining workpiece integrity through non-contact light interaction that avoids additional mechanical stress.
3Adaptability or versatility
If traditional machining approaches are used, then material can be removed, but machinability of diverse materials is not enhanced
Solution Approach 1:
The tool design incorporates a universal light beam entrance face that can interact with various material types (ceramics, semiconductors, metals) through optical energy absorption. The same basic tool geometry with optimized surface angles can machine different materials by adjusting light parameters rather than requiring completely different tool designs. This multi-functionality enhances adaptability across diverse materials while maintaining relatively simple manufacturing of the tool structure itself.
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
The optomechanical tooling system effectively reduces tooling forces, enhances surface finish, and increases the removal rate of materials while preserving the workpiece's integrity, allowing for improved machinability of various materials.
Implementation Method 1
a laser generator and optomechanical tooling. The optomechanical tooling may machine a workpiece defined by a material (e.g., ceramics, semiconductors, optical crystals, glass, metal alloys, plastics, composites, bone, teeth, and the like) that minimizes tooling forces while improving surface finish, aesthetics, form repeatability, and overall machinability of the workpiece
Implementation Method 2
using a heat-activated cutting fluid to promote ductile material removal
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
Optomechanical tools (10a-10o) are disclosed. The optomechanical tools Include a body of material having an entrance face, a rake face, a flank face, a rake side face, and a flank side face. The rake side face and the flank side face are connected to the entrance face. The rake side face is connected to the rake face. The flank side face is connected to the flank face. The rake face is connected to the flank face to define a curved cutting edge. The entrance face extends away from the flank side face to define a back-relief angle. The rake face extends away from the rake side face to define a rake angle. The entrance face is configured to direct a light beam toward one or more of the rake face, the flank face, the rake side face, the flank side face, and the curved cutting edge and through one or more of the rake face, the flank face, and the curved cutting edge, causing the light beam to refract onto the workpiece. Systems are also disclosed. Methods for transmitting a light beam through an optomechanical tool are also disclosed.