Capstone GE Aviation

2017 to 2018

I worked in a team of 4 for a senior design project with GE Aviation Manufacturing. In support of the new LEAP engine, the challenged was indication process of a forward outer seal of the turbine jet engine. The fixture spun on a 600 lb cylindrical fixture and need to be indicated for flatness and roundness of 0.0005". The process would take upwards of an hour and led to downtime of the CNC and increase operational cost. By designing a workbench fixture for the machinist, they could queue and indicate the component outside of the CNC machine saving the company hundreds of hours over a year.

Design

I created the design using PTC Creo, researching ergonomic positioning, and understanding the objective requirements.

I designed a workbench fixture as the manufacture engineer request. Allowing for the operator to conduct centering alignment, preparing the cylindrical tooling for CNC milling. This reduce the milling machines downtime by hour for several thousand part per year which yields high ROI.

Fabrication

Proof of concept

Design iteration

Using a SKF NRT320 B super precision axial radial cylindrical roller bearing, the fixture will be fastened to the adapter plate that is fastened to the bearing.

Revisiting the project

I deliever the result with the team members to the manufacture engineer as proof of concept with recommend changes to meet the requirements. The fixture was so large and heavy at nearly 600 lb it was difficult to absolute center and rotate without proper lifting equipment, which led the challenge of rotating such a large fixture for precision.

For the next steps: after completing the project and revisiting the idea, I designed a rotary table that is shown below

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