Graduate Thesis Or Dissertation
 

Generalized Chip Formation and Thermal Dynamics of Modulated Turning

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/6395wh04q

Descriptions

Attribute NameValues
Creator
Abstract
  • Modulation assistance is widely employed to improve chip management in turning. This process is also known as modulated turning. Modulated turning transforms continuous cutting into intermittent cutting by periodically disengaging the tool tip from the workpiece, resulting in the generation of short, easily managed chips. This novel method improves the machining efficiency such as final product surface texture, machining stability, and tool life. However, these benefits are contingent upon the fundamental principles of machining. A thorough analysis becomes necessary to evaluate the process outputs of modulated turning. This thesis presents the mechanical and thermal modeling of the modulated turning. The analysis begins with the kinematics of the modulated turning. A generalized chip formulation is presented to predict uncut chip thickness, cutting forces, and tool engagement/disengagement periods. Then, heat generation in modulated turning is modeled to predict tool temperatures. The time-dependent heat transfer problem in the cutting tool is solved both analytically and numerically. A comparative study is conducted to assess the accuracy of both developed methods, and they are validated against experiments available in the literature. The effect of modulation parameters on the tool temperature is also investigated. The results show that modulated turning plays a key role in controlling the maximum temperature on the rake face of the tool.
License
Resource Type
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Rights Statement
Publisher
Peer Reviewed
Language

Relationships

Parents:

This work has no parents.

In Collection:

Items

Thumbnail Title Date Uploaded Visibility Actions
file details OzdemirMert2023.pdf 2023-09-26 Public Download