Development of High-Speed, Low Amplitude Fast Tool Servo

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Abstract

Research Method

Results

Supporting Materials

Abstract

Fast tool servos are used to create minute surface features on a cutting surface. Increasing the operation frequency of a fast tool servo leads to an increase in production efficiency. The goal of this project is to create a device capable of operating at 10,000 Hz while producing a 5 mm stroke. The technical challenges, including actuator type, frequency limit, structural design, cooling and reliability, are addressed and evaluated. Different actuation methods for the servo are explored, and a suitable mode is chosen. A preliminary design utilizes piezoelectric actuation and a light-weight ceramic tool holder.

Research Method

The investigation will involve four main steps:
• Actuator selection – Different actuation schemes are evaluated and the most feasible is chosen.
• Assembly Design and Fabrication – The housing, flexures, tool holder, and all other components of the device are designed, modeled, and fabricated.
• Control System Design – Real-time feedback from a capacitance gage is used in conjunction with a control scheme to enable the servo to follow an input command as closely as possible.
• Experimental Testing – The device will be tested through a varying range of parameters. The design itself as well as the control system will be modified for optimum performance.

Results

Project in progress

Supporting Materials

• Drive Technique Comparison (Word, 2 Mb)
• Project Overview (PowerPoint, 1.77 Mb)

The following faculty, students, and PEC affiliates are involved in this project: