Airfoil Machining Template for Accurate Feature Positioning

The patent creates a physical copy (template) of the airfoil's external surface that captures the actual casting geometry. This template is then used to transfer accurate feature locations directly onto the airfoil, bypassing the need to interpret 2D drawings or model coordinates. The template serves as a physical replica that embodies the true positions of all features, resolving the contradiction by providing both ease of use (simple template placement) and high precision (accurate feature transfer).

The template is prepared in advance with all feature locations pre-marked or pre-positioned based on the ideal model. This preliminary action of creating the template with embedded feature positions allows the actual machining to proceed simply by following the template, eliminating the need for complex coordinate calculations during machining while ensuring high precision through the pre-established feature locations.

Instead of using expensive and time-consuming blue light scanning to capture the airfoil geometry, the patent uses a simpler copying method where a template is physically created from the airfoil's external surface. This template copy provides the necessary geometric information for accurate feature placement without requiring sophisticated scanning equipment or extensive data processing, thus achieving high precision while minimizing time and cost investment.

The template acts as an intermediary device that bridges the gap between the airfoil's actual geometry and the feature locations. Rather than directly scanning the airfoil and updating models, the template mediates the transfer of geometric information, providing a simple physical interface that eliminates the need for complex scanning and computational processes while maintaining accuracy.

The patent replaces expensive scanning technology with a low-cost physical template copying approach. The template can be created using simple methods such as molding or direct measurement, avoiding the need for costly blue light scanners and associated software licensing fees. This copying method provides sufficient precision for feature placement at a fraction of the cost of scanning solutions.

The template serves as a disposable or single-use tool that can be created inexpensively and discarded after use. Rather than investing in expensive, reusable scanning equipment, the patent employs a cheap template that achieves the same precision goal for a minimal cost, effectively sacrificing the longevity of the tooling to reduce overall production costs.