Integrated Dynamic Thermo-Mechanical Modeling of High Speed Spindles, Part 2: Solution Procedure and Validations

Author:

Li Hongqi1,Shin Yung C.1

Affiliation:

1. School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907

Abstract

This paper presents a new solution procedure for an integrated thermo-dynamic spindle model and validation results. Based on the model presented in Part 1 of this paper, a computer program has been developed to generate comprehensive solutions for high speed spindle-bearing systems, such as bearing stiffness, contact load and temperature, spindle dynamic characteristics and response, temperature distributions, and thermal expansions. The model and the solution procedure are modular such that solutions for different spindle set-ups can be easily generated by combining a given spindle model with different toolholder models. Validation test results for thermal and dynamic predictions are presented for four different spindle systems, including the thermal and dynamic validation tests on a specially constructed spindle testbed. The validation results show the model has accurate predictive capabilities for a wide range of operating conditions and various spindle designs.

Publisher

ASME International

Subject

Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Control and Systems Engineering

Reference29 articles.

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2. Harkany, I., 1961, “The Determination of the Optimum Bearing Distance with regard to Bearing Stiffness in the Case of Shafts with Constant and Variable Cross Sections, Respectively,” Machine Tool Industry Research Association Translation, Vol. 33, pp. 103–117.

3. Opitz, H., Gunther, D., Kalkert, W., and Kunkel, H., 1965, “The Study of the Deflection of Rolling Bearing for Machine Tool Spindles,” Proceeding of the 6th MTDR Conference, pp. 257–269.

4. Terman, T., and Bollinger, J. G., 1965, “Graphical Method for Finding Optimal Bearing Span for Overhung Shafts,” Mach. Des., 37(12), pp. 159–162.

5. Stansfield, F. M., and Bell, I. F., 1966, “The Design of Two Bearing Spindles,” Notes for Designers, No. 3, Machine Tool Industry Research Association, Macclesfield, England.

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