Dynamic Modeling of Transverse Drill Bit Vibrations

Date

1984-01-01

Author

Ulsoy, A. Galip
Tekinalp, Ozan
Lenz, Ehud

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A dynamic model is presented for the transverse vibration of drill bits, and validated experimentally. The model includes" the effects of drill rotation speed and feed rate as well as drill bit length, diameter and material properties The drill transverse natural frequencies are shown to depend on the rotation speed, and transverse instability occurs at a critical speed where the natural frequencies vanish. Simulation results snow the influence or parameters such as drill length, drill diameter, rotation speed, and feedrate on the critical speed. Experimental results confirming the predicted trends, are presented. Potential uses of the model, are discussed, and extensions to the model are suggested to account for the complex drill geometry, torsional vibrations, damping mechanisms, and distributed mass and stiffness properties. © 1984 CIRP.

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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0021615440&origin=inward
https://hdl.handle.net/11511/106604

Collections

Department of Aerospace Engineering, Article