Fluidic Flat Guide Guidance for Optical Workpiece Machining
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Solution Overview
Problem
Existing machining technologies for optical surfaces, such as mirrors and lenses, face challenges in achieving highly accurate face turning due to limitations in guidance systems, leading to inaccuracies and tilting moments during the machining process.
Innovation Solution
A device with two flat guides on opposite sides and a side guide underneath for fluidic guidance, combined with coreless linear motors and a scale for precise measurement, allows for torsionally stiff and accurate horizontal plane guidance, minimizing tilting and enabling precise machining of optical workpieces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional guidance systems are used for machining optical workpieces, then the device structure is simpler, but machining accuracy deteriorates due to inaccuracies and tilting moments
Solution Approach 1:
The guidance system is segmented into multiple independent flat guides (at least two, preferably three or more) positioned at different locations. Each flat guide independently supports the linearly movable component, distributing the guidance function across multiple elements to reduce individual guide complexity while collectively achieving high machining accuracy through their coordinated arrangement
Solution Approach 2:
The patent replaces conventional mechanical guidance systems with flat guides that minimize mechanical contact and friction. The flat guides provide a simplified mechanical interface that reduces complexity compared to traditional multi-component guidance mechanisms, while maintaining high precision through their geometric design and arrangement
2Stability of the object's composition
If conventional guidance systems are used, then the device structure is simpler, but stability deteriorates due to tilting moments during machining
Solution Approach 1:
The flat guides are strategically positioned at specific locations (at least two on opposite sides, preferably three or more including underneath) to create localized support points that counteract tilting moments. This distributed local support arrangement enhances overall guidance stability by preventing rotation and maintaining precise positioning throughout the machining process
Solution Approach 2:
The arrangement of flat guides on opposite sides and underneath the linearly movable component creates a counterbalancing effect against tilting moments. The guides positioned at different locations provide opposing support forces that neutralize rotational tendencies, stabilizing the component during machining operations
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 solution enables highly accurate machining of optical surfaces by providing precise guidance and minimizing tilting moments, resulting in improved machining accuracy and efficiency for non-rotationally symmetrical surfaces like Fresnel lenses.
Implementation Method 1
fluidic guidance of a component which is moving linearly back and forth... aerostatic or hydrostatic guides are used
Implementation Method 2
fluidic guidance of a component which is moving linearly back and forth... aerostatic or hydrostatic guides are used
Data Source
AI summary
A device and a method for machining of a flat side of an optical workpiece. The device has two flat guides and a side guide for fluidic guidance of a spindle unit and/or a slide. A linear drive with an assigned tool is located on a slide with a turntable. Highly accurate machining is enabled.