Simulation of cutting process in peripheral milling by predictive cutting force model based on minimum cutting energy

2010 ◽  
Vol 50 (5) ◽  
pp. 467-473 ◽  
Author(s):  
Takashi Matsumura ◽  
Eiji Usui
Keyword(s):  
Cutting Force ◽  
Cutting Process ◽  
Force Model ◽  
Cutting Force Model ◽  
Peripheral Milling ◽  
Cutting Energy ◽  
Model Based

scholarly journals Generalized cutting force model for peripheral milling of wood, based on the effect of density, uncut chip cross section, grain orientation and tool helix angle

2021 ◽  
Author(s):  
R. Curti ◽  
B. Marcon ◽  
L. Denaud ◽  
M. Togni ◽  
R. Furferi ◽  
...  
Keyword(s):  
Cutting Force ◽  
Chip Thickness ◽  
Helix Angle ◽  
Force Model ◽  
Cutting Force Model ◽  
Peripheral Milling ◽  
Grain Angle ◽  
Model Based ◽  
Cutting Coefficients ◽  
Machining Operations

AbstractThe influence of the grain angle on the cutting force when milling wood is not yet detailed, apart from particular cases (end-grain, parallel to the grain, or in some rare cases 45°-cut). Thus, setting-up wood machining operations with complex paths still relies mainly on the experience of the operators because of the lack of scientific knowledge easily transferable to the industry. The aim of the present work is to propose an empirical model based on specific cutting coefficients for the assessment of cutting force when peripheral milling of wood based on the following input: uncut chip thickness and width, grain angle (angle between the tool velocity vector and the grain direction of the wood), density and tool helix angle. The specific cutting coefficients were determined by peripheral milling with different depths of cut wood disks issued from different wood species on a dynamometric platform to record the forces. Milling a sample into a round shape (a disk) allows to measure the cutting forces toward every grain angle into a sole basic diameter reduction operation. Force signals are then post-processed to carefully clean the natural vibrations of the system without impacting their magnitudes. The experiment is repeated on five species with a large range of densities, machining two disks per species for five depths of cut in up- and down milling conditions for three different tool helix angles. Finally, a simple cutting force model, based on the previously cited parameters, is proposed, and its robustness analysed.

scholarly journals Preparation and Characterization of Ultra-Thin Dicing Blades With Different Bonding Properties

2021 ◽  
Author(s):  
Zewei Yuan ◽  
Shuang Feng ◽  
Tianzheng Wu
Keyword(s):  
Cutting Force ◽  
Cutting Process ◽  
Force Model ◽  
Cutting Force Model ◽  
Abrasive Particles ◽  
Experimental Apparatus ◽  
The Matrix ◽  
Bonding Properties ◽  
Set Up ◽  
Deviation Coefficient

Abstract Ultra-thin dicing blade is usually used to achieve a high precision cutting in semiconductor back-end packaging and assembly. Lots of interactional parameters involving in dicing blade preparation and cutting process bring difficulties to high cutting qualities and good working life of dicing blade. In order to address these problems, this study prepared three kinds of dicing blades and characterized the cutting properties of three dicing blades. It first proposed the abrasive exposure coefficient and tool deviation coefficient to provide parameters for the cutting force model. Then the experimental apparatus was set up to verify the proposed cutting force model. And a series of parameters including feed rate, spindle current, edge chipping coefficient, tool wear amount and grinding performance are used to characterize the comprehensive performance of prepared dicing blades. Finally, the edge morphology was observed under 3D microscope to analysis the hardness of different dicing blades. The theoretical and experimental results indicate that the proposed cutting force model can reflect actual cutting process. There is an inverse proportional function between the shedding of abrasive particles and the hardness of the matrix. The cutting performance of dicing blades is very dependent on the material of workpiece. C-dicing blades presents outstanding comprehensive effects with small chips and good self-sharpening properties.

Model of End Milling Force Based on Undeformed Chip Surface with NURBS in Peripheral Milling

2010 ◽  
Vol 33 ◽  
pp. 356-362 ◽  
Author(s):  
Xionig Ying Pu ◽  
Wei Jun Liu ◽  
Ji Bin Zhao
Keyword(s):  
Cutting Force ◽  
End Milling ◽  
Chip Thickness ◽  
Contact Length ◽  
Force Model ◽  
Cutting Force Model ◽  
Peripheral Milling ◽  
Chip Surface ◽  
Chip Area ◽  
Differential Element

A new cutting force model for peripheral milling is presented based-on a developed algorithm for instantaneous undeformed chip surface with NURBS. To decrease the number of the differential element, the contact cutting edges of end-milling cutter with the part and the chip thickness curve are represented by NURBS helix, and the instantaneous undeformed chip is constructed as a ruled surface with the two curves. The cutting force generated by the edge contact length and the uncut chip area. Using the cutting coefficients from Budak[1] , the cutting-force model verified by simulation. The simulation results indicate that new cutting-force model predict the cutting forces in peripheral milling accurately.

Numerical Model for Prediction of Cutting Force in Peripheral Milling Process Including Thrust and Tangential Damping

2011 ◽  
Vol 223 ◽  
pp. 122-132
Author(s):  
Kamel Mehdi ◽  
Ali Zghal
Keyword(s):  
Numerical Model ◽  
Cutting Force ◽  
Helix Angle ◽  
Milling Process ◽  
Cutting Process ◽  
Force Model ◽  
Total Force ◽  
Peripheral Milling ◽  
Process Damping ◽  
Tool Diameter

A numerical model for prediction of cutting force components in peripheral milling process, including the cutting process damping, is proposed. The cutting process damping creates two components (thrust and tangential) of a dynamic cutting force. The total force model is obtained through numerical integration of the local forces. The effects of tool parameters (diameter, helix angle, number of teeth) on process damping and cutting force distributions are discussed. It is shown that the average value of the process damping and the amplitude of the cutting force increase with increasing the tool diameter. On the other hand, when the tool helix angle increases the process damping increases and the cutting force decreases. The number of tool teeth’s has not an influence on the variation of the damping process and cutting force but an influence on the number of cycles of the periodic cutting process.

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