Affiliations: [a] Department of Mechanical Engineering, Anhui Vocational and Technical College, Hefei, Anhui, China | [b] Institute of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei, Anhui, China
Correspondence:
[*]
Corresponding author: Xie Bao, Department of Mechanical Engineering, Anhui Vocational and Technical College, Hefei 230011, Anhui, China. E-mail:[email protected]
Abstract:
Beam is an important component of CNC double column
vertical lathe, its structural design and static and dynamic characteristics
have direct influence on the machining accuracy and service life of the
machine tool. The test object is a machine tool beam provided by the
Heng-sheng machine tool plant, using test method of single-point excitation
provided by hammer force and mobile acceleration sensor. The paper employs
Poly-Max, the most widely used modal parameter identification method, to
analyze the measured frequency response function data so as to derive the
modal parameters, including intrinsic frequency, damping ratio and mode of
vibration. Beams of the modal test of beam model is set up, collecting data
and setting parameters. By analyzing the intrinsic characteristics of
structure, beam structure optimization strategy can be developed. The paper
provides a theoretical basis for the structural optimization design and
manufacturing of similar components and parts.
Keywords: Beam, poly-max, experimental modal analysis, data processing, structure optimization
