Delamination and chip breaking mechanism of orthogonal cutting CFRP/Ti6Al4V composite

2022 ◽  
Vol 73 ◽  
pp. 183-196
Author(s):  
Qiang Fu ◽  
Shujing Wu ◽  
Changhe Li ◽  
Jinyang Xu ◽  
Dazhong Wang
Keyword(s):  
Orthogonal Cutting ◽  
Chip Breaking ◽  
Breaking Mechanism

The Characteristics of Titanium Alloy Chip-Breaking by Orthogonal Cutting with a Surface-Textured Cutting Tool

2013 ◽  
Vol 365-366 ◽  
pp. 1235-1239 ◽  
Author(s):  
Jian Fu Zhang ◽  
Zhi Meng Chen ◽  
Ping Fa Feng ◽  
Wan Hong Xu
Keyword(s):  
Titanium Alloy ◽  
Cutting Tool ◽  
Orthogonal Cutting ◽  
Cutting Tools ◽  
Chip Thickness ◽  
Chip Morphology ◽  
Texture Surface ◽  
Chip Breaking ◽  
Breaking Mechanism ◽  
On Chip

A comparative experimental study on the orthogonal cutting of titanium alloys by a polished tool, a tool containing a chip breaker groove, and a surface-textured tool was performed. The effects of different cutting tools on chip morphology, chip thickness, length and width of crack defects inside the chip, saw-teeth of the chip, and chip curl radius were analyzed during the cutting of a titanium alloy. Compared to chips formed by other tools, curled chip fragments formed by the surface-textured tool exhibited greater thickness and longer crack defect depths but smaller chip tooth pitches and curvature radii. The microstructural mechanisms involved in the interaction between the micro-texture surface cutting tool and the chips were analyzed by evaluating the cutting and texture parameters. The chip-breaking mechanism is that the micro-texture on the tool surface creates a sticky texture, leading to the micro-cutting and wrenching of chips, thereby increasing the magnitude of the tools work-hardening and chip-breaking effects.

Research on Chip Breaking Feature of the Micro Hole Vibration Drilling

2011 ◽  
Vol 694 ◽  
pp. 616-619
Author(s):  
Peng Zhang ◽  
Xing Yu Guo ◽  
Kang Pei Zhao ◽  
Li You Zhu
Keyword(s):  
Machining Process ◽  
Chip Breaking ◽  
Process Effects ◽  
Micro Drilling ◽  
Micro Hole ◽  
Breaking Mechanism ◽  
Vibration Drilling ◽  
On Chip ◽  
Hole Machining ◽  
Chip Removal

It is often one of the most important issues for chip breaking and chip removal problems in the hole machining process, especially for micro hole. The chip breaking mechanism of the vibration drilling is researched, and its chip breaking conditions is analyzed. The micro drilling experiments are carried to contrast the chip shape of common drilling and vibration one. It can be draw that the vibration drilling can realize the regular chip breaking, which is beneficial to chip removal in hole machining, the chip breaking feature is one of the fine process effects. This work further enriches the vibration drilling technology.

Modeling the Chip-Work Contact Force for Chip Breaking in Orthogonal Machining With a Flat-Faced Tool

1998 ◽  
Vol 120 (1) ◽  
pp. 49-56 ◽  
Author(s):  
B. K. Ganapathy ◽  
I. S. Jawahir
Keyword(s):  
Cutting Force ◽  
Contact Force ◽  
Cutting Forces ◽  
Metal Cutting ◽  
Orthogonal Cutting ◽  
Force Model ◽  
Two Dimensional ◽  
Cutting Force Model ◽  
Chip Breaking ◽  
Orthogonal Machining

The present tendency towards increased automation of metal cutting operations has resulted in a need to develop a model for the chip breaking process. Conventional cutting force models do not have any provision for the study of chip breaking since they assume a continuous mode of chip formation, where the contact action of the free-end of the chip is ignored in all analyses. The new cutting force model proposed in this work incorporates the contact force developed due to the free-end of the chip touching the workpiece, and is applicable to the study of two-dimensional chip breaking in orthogonal machining. Orthogonal cutting tests were performed to obtain two-dimensional chip breaking. The experimentally measured cutting forces show a good correlation with the estimated cutting forces using the model. Results show that the forces acting on the chip vary within a chip breaking cycle and help identify the chip breaking event.

Study on Chip-Breaking Technology for Numerical-Control Varying-Feed Drilling of Deep Hole

2012 ◽  
Vol 217-219 ◽  
pp. 2688-2691
Author(s):  
Qing Yan Ma ◽  
Biao Wang ◽  
Da Guo Yu
Keyword(s):  
Small Diameter ◽  
Numerical Control ◽  
Drilling Process ◽  
Deep Hole ◽  
Chip Breaking ◽  
Chip Size ◽  
Breaking Mechanism ◽  
On Chip ◽  
Pressure Suction ◽  
Chip Removal

In the drilling process for deep hole, the continuous chips often jam up due to the difficulty of chip removal, and the chips cause problems such as tool breakage and deterioration of the surface quality. The measures of chip removal must be adopted, especially for small diameter deep hole, the chip removal space is limited and thickness and length of chips can directly influence the chip removal, the chip size are required as a precondition for chip removal. In this study, the feed is periodically varied in numerical control machine, and the length of chip can be controlled, then the chip breaking is realized with no addition special chip breaking mechanism, which combines with negative pressure suction mechanism for chips, and solves the problem of chip breaking and removal.

MCA Model for Chip Breaking and Curling of Orthogonal Cutting

2009 ◽  
Vol 407-408 ◽  
pp. 478-481
Author(s):  
Guang Yu Tan ◽  
Guang Jun Liu ◽  
Guang Hui Li
Keyword(s):  
Numerical Calculation ◽  
Cellular Automata ◽  
Continuous Process ◽  
Orthogonal Cutting ◽  
Cutting Process ◽  
Local Rule ◽  
Numerical Example ◽  
Chip Breaking ◽  
A Cell ◽  
Movable Cellular Automata

The Movable Cellular Automata (MCA) method is introduced into the analysis of cutting process, and is employed to build the discretised MCA tool-chip model of orthogonal cutting. The chip breaking and curling rule are proposed to determine the MCA local rule. The simple local rule and discretised method are presented to describe the continuous process of chip’s formation and breaking. The states’ rule of a cell and its neighbors can be used to predict and calculate the chips’ breaking and curling. The numerical calculation and a numerical example in the process of chip breaking and curling are proposed.

Research on Chip Breaking Mechanism of High-Temperature and High-Strength Steel 2.25Cr-1Mo-0.25V

2010 ◽  
Vol 142 ◽  
pp. 248-252
Author(s):  
Er Liang Liu ◽  
Yu Fu Li ◽  
X.Z. Wang ◽  
Fei Xiao ◽  
Xian Li Liu
Keyword(s):  
High Temperature ◽  
High Strength Steel ◽  
Mathematical Formulation ◽  
High Strength ◽  
Cutting Parameters ◽  
Chip Breaking ◽  
Section Profile ◽  
Paper Chip ◽  
Breaking Mechanism ◽  
On Chip

In the process of turning high-temperature and high-strength steel, it is an effective method for chip breaking with complicated groove insert. In this paper, chip breaking mechanism is analyzed using the coated complicate groove insert for cutting high-temperature and high-strength steel. The model of chip curl radios is constructed though analyzing the effect of complicated groove insert on chip formation. The mathematical formulation of chip section profile coefficient is built through analyzing influential effect of complicated groove on chip section profile. The chip breaking model is developed according to chip-breaking criterion. Finally, a full experimental validation of the model is presented for chip breaking when the workpiece is high-temperature and high-strength steel, 2.25Cr-1Mo-0.25V. The tested results show the chip breaking model is reasonable, and the optimization cutting parameters are obtained.

Reserch on Cutting Depth Effect in Cutting Process

2011 ◽  
Vol 128-129 ◽  
pp. 251-254
Author(s):  
Zhao Wei Dong ◽  
Xiao Hang Wan ◽  
Shu Jun Li ◽  
Sheng Yong Liu
Keyword(s):  
Residual Stress ◽  
Cutting Forces ◽  
Orthogonal Cutting ◽  
Fem Analysis ◽  
Work Piece ◽  
Cutting Depth ◽  
Depth Effect ◽  
Chip Breaking ◽  
The Status ◽  
Cutting Model

In the cutting procedure, the cutting depth influences cutting forces, chip breaking, chip shaping, and the distribution status of residual stress. The two-dimension heat-mechanic coupling orthogonal cutting model is established with the FEM analysis software by use of the Lagrange quality point coordinate system description method in this paper. This paper simulates a typical work-piece chip breaking process with different cutting depth, which gets the cutting forces curves and the total status of residual stress distribution and the status.

Simulation and Analysis of Cutting Tools Corner Radius in Cutting Process

2010 ◽  
Vol 42 ◽  
pp. 114-117
Author(s):  
Zhao Wei Dong ◽  
Xiao Hang Wan ◽  
Sheng Yong Liu
Keyword(s):  
Residual Stress ◽  
Cutting Forces ◽  
Orthogonal Cutting ◽  
Cutting Tools ◽  
Cutting Process ◽  
Work Piece ◽  
Adaptive Meshing ◽  
Chip Breaking ◽  
Corner Radius ◽  
The Status

In the procedure of cutting, its corner radius influences cutting forces, chip breaking, chip shaping, and the distribution status of residual stress. The author adopts the Finite Element Method (FEM) in this paper, and establishes the reasonable two-dimension milling model based on the orthogonal cutting process, which is used the adaptive meshing criteria. And, a typical work-piece chip breaking process with different cutting tools corner radius, which gets the cutting forces curves and the total status of residual stress distribution and the status is simulated in this paper.

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