Characterization of metal cutting dynamics. Final report

PDF Version Also Available for Download.

Description

A Hardinge CNC lathe has been fitted with sensors and a data acquisition system for the measurement, processing and storage of accelerations and forces associated with orthogonal cutting. This system has been completely validated. Orthogonal cutting experiments were designed in order to study the effects of critical cutting parameters on machining dynamics. Three major experimental sets were conducted. In the first set the depth of cut was increased in a stepwise fashion, while the workpiece surface speed, the spindle speed, and the tool feedrate were maintained invariant. In the second and third sets, the spindle speed and feedrate were varied, ... continued below

Physical Description

5 p.

Creation Information

Berger, B.S. & Minis, I. November 1, 1997.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Sponsor

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

A Hardinge CNC lathe has been fitted with sensors and a data acquisition system for the measurement, processing and storage of accelerations and forces associated with orthogonal cutting. This system has been completely validated. Orthogonal cutting experiments were designed in order to study the effects of critical cutting parameters on machining dynamics. Three major experimental sets were conducted. In the first set the depth of cut was increased in a stepwise fashion, while the workpiece surface speed, the spindle speed, and the tool feedrate were maintained invariant. In the second and third sets, the spindle speed and feedrate were varied, respectively, while maintaining all the other parameters invariant. In total over two hundred orthogonal cutting experiments were performed. In each experiment, the two non-zero components of the tool acceleration and the two non-zero components of the cutting force were measured. Despite high noise levels, mutual information calculations with smoothing kernels and false nearest neighbor algorithms proved to be sufficiently robust to provide upper bounds on attractor dimension for all fifty data sets studied. These results prove that the infinite dimensional cutting process has an associated attractor of dimension {le} 4. This result is important as a guide to model construction. An analysis of the power spectral sideband structure proved that sideband spacing is identical to the turning frequency. This result was further substantiated through envelope detection techniques. A linear delay model was shown to emulate the experimental power spectrum and possess predictive capacity.

Physical Description

5 p.

Notes

OSTI as DE98004716

Medium: P; Size: 5 p.

Source

  • Other Information: PBD: 1 Nov 1997

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Other: DE98004716
  • Report No.: DOE/ER/14336--4
  • Grant Number: FG02-93ER14336
  • DOI: 10.2172/588027 | External Link
  • Office of Scientific & Technical Information Report Number: 588027
  • Archival Resource Key: ark:/67531/metadc694788

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • November 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

Description Last Updated

  • April 13, 2017, 12:26 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 3

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Berger, B.S. & Minis, I. Characterization of metal cutting dynamics. Final report, report, November 1, 1997; United States. (digital.library.unt.edu/ark:/67531/metadc694788/: accessed November 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.