scholarly journals High Precision Machining with Multi-flute End-mill tool on 5-Axis Controlled Machining Center. Achievement of Constant Cutting Force in Side milling by Controlling Axial Depth of Cut.

2003 ◽  
Vol 69 (3) ◽  
pp. 385-389 ◽  
Author(s):  
Heisaburo NAKAGAWA ◽  
Toshiki HIROGAKI ◽  
Maiko NAKAYAMA ◽  
Hirotoshi OHTSUKA ◽  
Yoshiaki KAKINO ◽  
...  
Keyword(s):  
Cutting Force ◽  
High Precision ◽  
Precision Machining ◽  
Depth Of Cut ◽  
End Mill ◽  
Side Milling ◽  
Machining Center ◽  
Constant Cutting Force ◽  
Axial Depth

Experimental Study of End Milling Force on Manganese Steel

2013 ◽  
Vol 718-720 ◽  
pp. 239-243
Author(s):  
Girma Seife Abebe ◽  
Ping Liu
Keyword(s):  
Cutting Force ◽  
Feed Rate ◽  
End Milling ◽  
Cutting Speed ◽  
Second Order ◽  
Manganese Steel ◽  
Depth Of Cut ◽  
Machining Deformation ◽  
Radial Depth ◽  
Axial Depth

Cutting force is a key factor influencing the machining deformation of weak rigidity work pieces. In order to reduce the machining deformation and improve the process precision and the surface quality, it is necessary to study the factors influencing the cutting force and build the regression model of cutting forces. This paper discusses the development of the first and second order models for predicting the cutting force produced in end-milling operation of modified manganese steel. The first and second order cutting force equations are developed using the response surface methodology (RSM) to study the effect of four input cutting parameters (cutting speed, feed rate, radial depth and axial depth of cut) on cutting force. The separate effect of individual input factors and the interaction between these factors are also investigated in this study. The received second order equation shows, based on the variance analysis, that the most influential input parameter was the feed rate followed by axial depth, and radial depth of cut. It was found that the interaction of feed with axial depth was extremely strong. In addition, the interactions of feed with radial depth; and feed rate with radial depth of cut were observed to be quite significant. The predictive models in this study are believed to produce values of the longitudinal component of the cutting force close to those readings recorded experimentally with a 95% confident interval.

High-Quality End Milling of CFRP – Inclination Milling with High-Helix End Mill –

2016 ◽  
Vol 10 (3) ◽  
pp. 372-380 ◽  
Author(s):  
Akira Hosokawa ◽  
◽  
Naoya Hirose ◽  
Takashi Ueda ◽  
Tomohiro Koyano ◽  
...  
Keyword(s):  
Tool Wear ◽  
Cutting Force ◽  
Surface Integrity ◽  
Helix Angle ◽  
Surface Generation ◽  
End Mill ◽  
Side Milling ◽  
Pull Out ◽  
End Mills ◽  
Coated Carbide

Side milling tests of CFRP (carbon fiber reinforced plastics) containing thermosetting resin are carried out by TiAlN/AlCrN-coated, H2-free DLC (diamond-like carbon)-coated, and CVD diamond-coated carbide end mills without coolant. Two types of end mills having different helix angles of 30° and 60° are used. The film thickness and surface smoothness are varied for the DLC-coated end mills. The cutting characteristics are evaluated by tool wear and surface integrity (i.e., 3D profiles of the machined surface, generation of fluffing, delamination, and pull-out of the carbon fibers). The cutting force and tool flank temperature are also examined for the two types of CFRP composites and the helix angle of the end mill. “Inclination milling,”in which the end mill is tilted so that the resultant cutting force acts parallel to the work surface, is proposed as a novel technique to be used with a high-helix angle end mill. This unique approach enables the reduction of tool wear and improves the surface integrity of machined CFRP surfaces.

Development of cBN electroplated end-mill for high precision machining of CFRP and derivation of optimum machining conditions

2019 ◽  
Vol 2019 (0) ◽  
pp. S11111
Author(s):  
Shinnosuke YAMASHITA ◽  
Tatsuya FURUKI ◽  
Hiroyuki KOUSAKA ◽  
Kiyofumi INABA ◽  
Kazuna FUJIWARA
Keyword(s):  
High Precision ◽  
Precision Machining ◽  
End Mill ◽  
Machining Conditions

Development of Cbn Electroplated End-Mill for High Precision Machining of Cfrp

2021 ◽  
Author(s):  
Shinnosuke Yamashita ◽  
Tatsuya Furuki ◽  
Hiroyuki Kousaka ◽  
Toshiki Hirogaki ◽  
Eiichi Aoyama ◽  
...  
Keyword(s):  
High Precision ◽  
Precision Machining ◽  
End Mill

A 3-D Closed-Form Cutting Force Model for End Milling With Application to Sculptured Surface Milling

1999 ◽  
Author(s):  
T. S. Lee ◽  
R. Farahati ◽  
Y. J. Lin
Keyword(s):  
Cutting Force ◽  
End Milling ◽  
Free Form ◽  
Depth Of Cut ◽  
Force Model ◽  
Sculptured Surface ◽  
Cutting Force Model ◽  
Estimation Scheme ◽  
Simulation Results ◽  
Axial Depth

Abstract A comprehensive, 3D mathematical model of desired/optimal cutting force for end milling of free-form surfaces is proposed in this paper. The closed-form predictive model is developed based on a perceptive cutting approach resulting in a cutting force model having a comprehensive set of essential cutting parameters. In particular, the normal rake angle usually missing in most existing models of the same sort is included in the developed model. The model also enables quantitative analyses of the effect of any parameters on the cutting performance of the tool, providing a guideline to improving the tool performance. Since the axial depth of cut varies with time when milling sculptured surface parts, an innovative axial depth of cut estimation scheme is proposed for the generation of 3-D cutting forces. This estimation scheme improves the practicality of most existing predictive cutting force model for milling in which the major attention has been focused on planar milling surface generation. In addition, the proposed model takes the rake surface on the flute of mills as an osculating plane to yield 3-D cutting force expressions with only two steps. This approach greatly reduces the time-consuming mathematical work normally required for obtaining the cutting force expressions. A series of milling simulations for machining free-form parts under scenario cutting conditions have been performed to verify the effectiveness of the proposed cutting force model. The simulation results demonstrate accurate estimating capability of the proposed method for the axial depth of cut estimation. The cutting force responses from the simulation exhibit the same trends as what can be obtained using the empirical mechanic’s model referenced in the literature. Finally, through the simulation results it is also learned that designing a tool with a combination of different helix angles having cutting force signatures similar to that of the single helix angle counterparts is particularly advantageous.

scholarly journals Development of a High-Precision Machining Center Using Neural Networks and Genetic Algorithm.

1995 ◽  
Vol 61 (591) ◽  
pp. 4517-4522 ◽  
Author(s):  
Mamoru Mitsuishi ◽  
Tsutomu Okumura ◽  
Naohiko Sugita ◽  
Takaaki Nagao ◽  
Yotaro Hatamura
Keyword(s):  
Genetic Algorithm ◽  
Neural Networks ◽  
High Precision ◽  
Precision Machining ◽  
Machining Center

The Importance of Including Size Effect When Modeling Slot Milling

1998 ◽  
Vol 120 (1) ◽  
pp. 68-75 ◽  
Author(s):  
S. N. Melkote ◽  
W. J. Endres
Keyword(s):  
Size Effect ◽  
Cutting Force ◽  
End Milling ◽  
Helix Angle ◽  
Milling Process ◽  
Depth Of Cut ◽  
Slot Milling ◽  
Milling Operations ◽  
Force Variation ◽  
Axial Depth

This paper presents a detailed mechanistic force analysis that includes size effect for slot milling operations. Existing studies of the milling process have modeled the slot end milling operation as a simple geometric extension of peripheral end milling models with constant values for the specific energies used to predict forces for a given cutter geometry and cutting conditions. This paper addresses the limitations of this approach for accurate predictions of the instantaneous cutting force variation, particularly for steady-state slotting with four-flute cutters. It is shown through a comparison of model simulations and experimental results that significantly improved predictions of the cutting force variation are obtained by properly accounting for the size effect in slotting. The dependence of the cutting force variation on axial depth of cut and helix angle is demonstrated. Practical implications of selecting helix angle and axial depth of cut based on the improved slot end milling model are also discussed. Modeling approaches other than the mechanistic approach considered here are also noted in this light.

Cutting Force in High-Speed Face Milling AISI H13 Steel

2015 ◽  
Vol 667 ◽  
pp. 35-40
Author(s):  
Xiao Bin Cui ◽  
Jing Xia Guo ◽  
Xiao Yang Wang
Keyword(s):  
Cutting Force ◽  
High Speed ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Face Milling ◽  
Depth Of Cut ◽  
H13 Steel ◽  
Aisi H13 Steel ◽  
Aisi H13 ◽  
Axial Depth

For the purpose of acquiring thorough understanding of the characteristics of cutting force in high and ultra-high-speed face milling of hardened steel, experimental investigations on face milling of AISI H13 steel (46-47 HRC) are conducted in the present study. The cutting speed of 1400 m/min, at which relatively low cutting force and relatively low surface roughness can be obtained at the same time, is considered as a critical value for both mechanical load and surface finish. The Taguchi method is applied to investigate the effects of cutting parameters on cutting force in different speed ranges (below and above 1400 m/min). In different speed ranges, the contribution order of the cutting parameters for the resultant cutting force is the same, namely axial depth of cut, cutting speed and feed per tooth. However, the contributions of cutting speed and feed per tooth increase substantially as the cutting speed surpasses 1400 m/min. Within the range of cutting parameters used in the present study, the optimum cutting conditions for the cutting force are cutting speed 200 m/min, feed per tooth 0.02 mm/tooth and axial depth of cut 0.1 mm.

Development and Evaluation of a High-Precision Machining Center with Friction-Less Drives

2006 ◽  
pp. 163-167
Author(s):  
Daisuke Kono ◽  
Atsushi Matsubara ◽  
Soichi Ibaraki ◽  
Hisashi Otsubo ◽  
Masaru Tsuboi ◽  
...  
Keyword(s):  
High Precision ◽  
Precision Machining ◽  
Machining Center
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