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Bell and Ingersoll Machine Tools, Inc. produce main rotor blade 3D Printed Trim Tool on Ingersoll MasterPrint the largest 3D printer in the world
Monday, 1 March 2021

Ingersoll Machine Tools, Inc. and Bell Textron Inc., have announced that they have completed a collaborative effort utilising a large format 3D Printer to successfully manufacture 22-foot-long vacuum trim tool for production of main rotor blade components.

The effort utilised Ingersoll's hybrid large format MasterPrint gantry type 3D printer and 5-axis milling machine housed at Ingersoll's headquarters facility in Rockford, IL.

"We are continuously testing and advancing MasterPrint in our Development Centre" said Chip Storie, CEO at Ingersoll "Among Ingersoll's short-term objectives is for MasterPrint to 3D-print molds for aerospace that preserve the geometrical properties and tolerances, vacuum integrity and autoclave resilience normally obtained with traditional technology, but with the cost and time reduction only additive manufacturing can offer. The relentless progress our MasterPrint process has made in 2020 has finally made this target attainable".

This production tooling effort 3D printed 1,150 pounds of ABS material with 20% chopped carbon fibre fill. The printing process was completed as a single part in a continuous 75-hour operation. After printing, the mold surfaces and tooling location features were machined to finished dimensions by exchanging the print module for the 5-Axis milling head which is changeable on the MasterPrint machine. The machining was completed in one week and the final part achieved full vacuum tightness. The Ingersoll machine utilises the Siemens 840D CNC control system for controlling both the machining and the 3D printing.

Critical time savings was achieved through the 3D print fabrication and efficient 5-axis machining operations. The additive and subtractive manufacturing processes were seamlessly co-engineered in the native CAD software format. The traditional build cycle for a typical mold in aluminum such as this using standard methods is typically 4 to 5 months. This manufacturing process was completed in a matter of weeks.

"For many years Bell has utilised composite materials for manufacturing airframe components, including components produced on an Ingersoll Machine Tools Tape Layer machines. These similar materials are now being utilized for manufacturing the molds that form the airframe components. Utilising this rapid manufacturing equipment will allow Bell to greatly accelerate our development of tooling for many applications within the Bell organisation" said James Cordell, Sr. Manager, Process Stability, Bell.

Ingersoll Machine Tools, Inc. has played an important role in enabling breakthrough airframe production techniques for major aircraft designs around the world and we appreciate the opportunity to support Bell in building their future.

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Metal Processes