Efficient calibration of instantaneous cutting force coefficients and runout parameters for general end mills

2007 ◽  
Vol 47 (11) ◽  
pp. 1767-1776 ◽  
Author(s):  
M. Wan ◽  
W.H. Zhang ◽  
G.H. Qin ◽  
G. Tan
Keyword(s):  
Cutting Force ◽  
Cutting Force Coefficients ◽  
Force Coefficients ◽  
Instantaneous Cutting Force Coefficients ◽  
End Mills

3D Ball-End Milling Force Model Using Instantaneous Cutting Force Coefficients

2005 ◽  
Vol 127 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Jeong Hoon Ko ◽  
Dong-Woo Cho
Keyword(s):  
Cutting Force ◽  
End Milling ◽  
Cutting Conditions ◽  
Force Model ◽  
Cutting Force Model ◽  
Cutting Force Coefficients ◽  
Milling Force ◽  
Ball End Milling ◽  
Force Coefficients ◽  
Instantaneous Cutting Force Coefficients

Application of a ball-end milling process model to a CAD/CAM or CAPP system requires a generalized methodology to determine the cutting force coefficients for different cutting conditions. In this paper, we propose a mechanistic cutting force model for 3D ball-end milling using instantaneous cutting force coefficients that are independent of the cutting conditions. The uncut chip thickness model for three-dimensional machining considers cutter deflection and runout. An in-depth analysis of the characteristics of these cutting force coefficients, which can be determined from only a few test cuts, is provided. For more accurate cutting force predictions, the size effect is also modeled using the cutter edge length of the ball-end mill and is incorporated into the cutting force model. This method of estimating the 3D ball-end milling force coefficients has been tested experimentally for various cutting conditions.

Two-Step Identification of Instantaneous Cutting Force Coefficients and Cutter Runout

2014 ◽  
Vol 887-888 ◽  
pp. 1179-1183 ◽  
Author(s):  
Hong Yan Hao ◽  
Wen Cheng Tang ◽  
Bao Sheng Wang
Keyword(s):  
Cutting Force ◽  
End Milling ◽  
Chip Thickness ◽  
Key Factors ◽  
Cutter Runout ◽  
Cutting Force Coefficients ◽  
Force Coefficients ◽  
Instantaneous Cutting Force Coefficients ◽  
Identification Approach ◽  
Milling Forces

Cutting force coefficients and cutter runout parameters are the key factors for accurate prediction of instantaneous milling forces. A new two-step identification method is presented to calibrate them in end milling. Based on analyzing effects of cutter runout on milling forces, a method of extracting nominal milling forces from measured milling forces is proposed. By calibrating average cutting force coefficients and corresponding average chip thickness, an approach to evaluate the instantaneous cutting force coefficients is proposed. Then, an iterative method is presented to identify cutter runout, and the procedure is also given in detail. Milling tests are performed to test the proposed method, and validity of the identification approach is proved by a good agreement between predicted results and experimental results.

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