True equivalent chip thickness for tools with a nose radius
(2007) Swedish Production Symposium 2007- Abstract
- A majority of the established systems for choice and optimization of cutting data are based on Woxén’s equivalent chip thickness, heW. In metal cutting theory and models, the equivalent chip thickness is of vital importance when the depth-of-cut ap is in the same order or smaller than the nose radius r. Woxén made considerable simplifications in his chip area model, that form the basis for calculations of the equivalent chip thickness. Basic mathematical solutions, e.g. describing the chip area on circular inserts, are lacking. This article describes the geometrical implications when machining with round inserts. The error in Woxén’s equivalent chip thickness is largest when the depth-of-cut is ... (More)
- A majority of the established systems for choice and optimization of cutting data are based on Woxén’s equivalent chip thickness, heW. In metal cutting theory and models, the equivalent chip thickness is of vital importance when the depth-of-cut ap is in the same order or smaller than the nose radius r. Woxén made considerable simplifications in his chip area model, that form the basis for calculations of the equivalent chip thickness. Basic mathematical solutions, e.g. describing the chip area on circular inserts, are lacking. This article describes the geometrical implications when machining with round inserts. The error in Woxén’s equivalent chip thickness is largest when the depth-of-cut is less than ¼ of the nose radius. The calculations of the equivalent chip thickness based on the Woxén model are up to 50 % wrong, for some combinations of cutting data in the finishing range. The presented results explain the difficulties in getting a good validity in the models used to calculate tool life in finishing machining. The error leads to an underrating of the tool load in many machining situations. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1513378
- author
- Ståhl, Jan-Eric LU ; Andersson, Mats LU and Andersson, Carin LU
- organization
- publishing date
- 2007
- type
- Contribution to conference
- publication status
- unpublished
- subject
- keywords
- round inserts., metal cutting, Woxén, equivalent chip thickness
- pages
- 7 pages
- conference name
- Swedish Production Symposium 2007
- conference location
- Göteborg, Sweden
- conference dates
- 2007-08-28 - 2007-08-30
- language
- English
- LU publication?
- yes
- id
- ec06ef9b-fcc4-43cc-b3a8-5fa9f6b037a8 (old id 1513378)
- date added to LUP
- 2016-04-04 14:33:45
- date last changed
- 2019-04-01 16:54:25
@misc{ec06ef9b-fcc4-43cc-b3a8-5fa9f6b037a8,
abstract = {{A majority of the established systems for choice and optimization of cutting data are based on Woxén’s equivalent chip thickness, heW. In metal cutting theory and models, the equivalent chip thickness is of vital importance when the depth-of-cut ap is in the same order or smaller than the nose radius r. Woxén made considerable simplifications in his chip area model, that form the basis for calculations of the equivalent chip thickness. Basic mathematical solutions, e.g. describing the chip area on circular inserts, are lacking. This article describes the geometrical implications when machining with round inserts. The error in Woxén’s equivalent chip thickness is largest when the depth-of-cut is less than ¼ of the nose radius. The calculations of the equivalent chip thickness based on the Woxén model are up to 50 % wrong, for some combinations of cutting data in the finishing range. The presented results explain the difficulties in getting a good validity in the models used to calculate tool life in finishing machining. The error leads to an underrating of the tool load in many machining situations.}},
author = {{Ståhl, Jan-Eric and Andersson, Mats and Andersson, Carin}},
keywords = {{round inserts.; metal cutting; Woxén; equivalent chip thickness}},
language = {{eng}},
title = {{True equivalent chip thickness for tools with a nose radius}},
url = {{https://lup.lub.lu.se/search/files/61814706/True_equivalent_chip_thickness.pdf}},
year = {{2007}},
}