A model of end milling dynamics geared towards the prediction of chatter /
In the manufacturing industry, chatter is one of the primary factors limiting productivity and throughput. Chatter is recognized by its characteristic noise, the chatter marks, and/or the dissected chips. The objective of this research is to develop a potentially more accurate operating range for ch...
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| Format: | Thesis Book |
| Language: | English |
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[Place of publication not identified] :
[publisher not identified] ;
1999.
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| Subjects: | |
| Online Access: | http://proxy.library.tamu.edu/login?url=http://proquest.umi.com/pqdweb?did=733675331&sid=1&Fmt=2&clientId=2945&RQT=309&VName=PQD |
| Summary: | In the manufacturing industry, chatter is one of the primary factors limiting productivity and throughput. Chatter is recognized by its characteristic noise, the chatter marks, and/or the dissected chips. The objective of this research is to develop a potentially more accurate operating range for chatter-free milling by taking a different look at stability chart profiles. A single degree of freedom model is utilized to represent the end milling cutting process including the possibility of regenerative chatter. The resulting equation of motion is a parametrically excited system where the coefficients of the differential equation are time-varying. The perturbation method along with the method of multiple scales are extended in order to establish a stability criterion for the end milling process. The analytically developed stability criterion is then compared with experimentally obtained data for up-milling operations at half-immersion. The research findings can be summarized by stating that the allowable axial depth of cut gradually decreases as spindle speed increases, within the machine/tool physical and mechanical limitations. This is contrary to most stability lobe diagrams published to date. |
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| Item Description: | Vita. "Major Subject: Mechanical Engineering". |
| Physical Description: | xvi, 149 leaves : illustrations ; 28 cm. Issued also on microfiche from University Microfilm Inc. |
| Bibliography: | Includes bibliographical references (leaves 130-133). |