Experimental Research of Workpiece Temperature in Orthogonal Turn-Milling Compound Machining

2014 ◽  
Vol 887-888 ◽  
pp. 1184-1190 ◽  
Author(s):  
Yi Zhi Liu ◽  
Fang Yu Peng ◽  
Sen Lin ◽  
Rong Yan ◽  
Sheng Yang
Keyword(s):  
Experimental Method ◽  
Experimental Research ◽  
Cylindrical Surface ◽  
Cutting Parameters ◽  
Milling Process ◽  
Workpiece Temperature ◽  
Temperature Variance ◽  
Milling Tool ◽  
Five Axis ◽  
Turn Milling

Workpiece temperature in orthogonal turn-milling compound machining was studied with experimental method in this paper. The orthogonal turn-milling process was simulated through engagement of a milling tool and cylindrical surface on a five-axis milling center. The cutting parameters were designed into an orthogonal parameter table of seven factors three levels based on factors having effects on workpiece temperature. Variance analysis of data achieved from this experiment was carried out and conclusion about the order of effects each factor has on workpiece temperature was drawn.

Modeling and Prediction Research on End Mills Wear in Micro Turn-Milling Process

2013 ◽  
Vol 423-426 ◽  
pp. 741-745
Author(s):  
Xiao Yang Su ◽  
Zhi Jing Zhang ◽  
Xin Jin ◽  
Yong Jun Deng
Keyword(s):  
Tool Wear ◽  
Cutting Parameters ◽  
Milling Process ◽  
Visual Measurement ◽  
Modeling And Prediction ◽  
Milling Tool ◽  
End Mills ◽  
On Line ◽  
The Relationship ◽  
Turn Milling

An end mills wear experiment was designed to model and predict the end mills wear in micro turn-milling process. Based on the on-line visual measurement system, the tool wear was measured, then micro turn-milling tool wear regression models were established according to Response surface Method (RSM). The relationship between cutting parameters and tool wear was discussed in detail. The results indicate that the regression model can predict the value and regularity of end mills wear accurately, which can provide guidance on improving machining precision and quality in micro turn-milling process.

Experimental investigation of the influence of cutting parameters on surface quality and on the special characteristics of micro-milled surfaces of hardened steels

2021 ◽  
pp. 095440622110130
Author(s):  
Barnabás Zoltán Balázs ◽  
Márton Takács
Keyword(s):  
Surface Quality ◽  
Surface Profile ◽  
Cutting Parameters ◽  
Relevant Information ◽  
Milling Process ◽  
Micro Milling ◽  
Machined Surface ◽  
Analysis Of Dynamics ◽  
Five Axis ◽  
Coated Carbide

Micro-milling is one of the most essential technologies to produce micro components, but due to the size effect, it has many special characteristics and challenges. The process can be characterised by strong vibrations, relatively large run-out and tool deformation, which directly affects the quality of the machined surface. This paper deals with a detailed investigation of the influence of cutting parameters on surface roughness and on the special characteristics of micro-milled surfaces. Several systematic series of experiments were carried out and analysed in detail. A five-axis micromachining centre and a two fluted, coated carbide micro-milling tool with a diameter of 500 µm were used for the tests. The experiments were conducted on AISI H13 hot-work tool steel and Böhler M303 martensitic corrosion resistance steel with a hardness of 50 HRC in order to gain relevant information of machining characteristics of potential materials of micro-injection moulding tools. The effect of the cutting parameters on the surface quality and on the ratio of Rz/ Ra was investigated in a comprehensive cutting parameter range. ANOVA was used for the statistical evaluation. A novel method is presented, which allows a detailed analysis of the surface profile and repetitions, and identify the frequencies that create the characteristic profile of the surface. The procedure establishes a connection between the frequencies obtained during the analysis of dynamics (forces, vibrations) of the micro-milling process and the characterising repetitions and frequencies of the surface.

Research on Tool Wear Form in Micro Turn-Milling Process

2012 ◽  
Vol 184-185 ◽  
pp. 663-667 ◽  
Author(s):  
Lin Hui Zhao ◽  
Jian Cheng Zhang ◽  
Wei Su
Keyword(s):  
Tool Wear ◽  
Small Diameter ◽  
Milling Process ◽  
Milling Tool ◽  
Key Factor ◽  
Part Surface ◽  
End Mills ◽  
Series Of Experiments ◽  
Turn Milling ◽  
Wear Condition

In micro machining, turn-milling tool wear is a key factor for part surface quality. This paper carries on experiments on end mills wear in micro turn-milling machining, aiming to research the wear form and provide some reference data for developing wear standard of small diameter end mills. To measure wear condition of end mills, machine vision technique is utilized. This paper designs and sets up an online end mill wear measurement system for a micro turn-milling process center. With a series of experiments on small diameter end mills, wear conditions of different cutting positions are researched. Based on analysis of experiment data, wear characteristics and wear rule for micro turn-milling process are summarized in this paper.

Research on Cutting Stability of High-Efficiency Micro Turn-Milling Compound Machine Tool Based on Lobes

2019 ◽  
Vol 295 ◽  
pp. 59-65
Author(s):  
Zhong Peng Zheng ◽  
Xin Jin ◽  
Ye Wang Sun ◽  
Xin Yang Jiang ◽  
Zhi Jing Zhang ◽  
...  
Keyword(s):  
Machine Tool ◽  
High Efficiency ◽  
Cutting Parameters ◽  
Milling Process ◽  
Test Method ◽  
Cutting Process ◽  
Milling Machine ◽  
Cutting Stability ◽  
Milling Chatter ◽  
Turn Milling

In order to improve the cutting stability of high-efficiency micro turn-milling machine tools, avoid the chattering problem during the cutting process. In this paper, the chatter problem in the cutting process is studied based on the stable lobes. By analyzing the high-efficiency turn-milling machine tool mechanism and the turn-milling model, the micro turn-milling dynamic dynamic vibration model and the mathematical model of turn-milling chatter are obtained. Then, based on the hammer test method, the transfer function of the tool-workpiece system is obtained, and the turn-milling stable lobes of the high-efficiency micro turn-milling machine tool is constructed. Finally, the research on the stable zone of the turning main spindle parts, the turning back spindle parts and the high-frequency milling part are completed. The experimental research results guide and optimize the selection of cutting parameters for turn-milling process.

An Investigation of Workpiece Temperature in Orthogonal Turn-Milling Compound Machining

2015 ◽  
Vol 137 (1) ◽  
Author(s):  
Fangyu Peng ◽  
Yizhi Liu ◽  
Sen Lin ◽  
Rong Yan ◽  
Sheng Yang ◽  
...  
Keyword(s):  
Heat Source ◽  
Orthogonal Experiment ◽  
Test Validity ◽  
Chip Thickness ◽  
Depth Of Cut ◽  
Heat Conducting ◽  
Machining Parameters ◽  
Workpiece Temperature ◽  
Milling Tool ◽  
Turn Milling

A thermal model estimating workpiece temperature in orthogonal turn-milling compound machining for the case with noneccentricity between rotation axes of workpiece and tool has been established in this paper. Milling tool and machining history were discretized into infinitesimal elements of equal size to deal with complicated cutter geometry and intermittent cutting procedure. The geometries of milling tool and workpiece were analyzed to calculate the instantaneous chip thickness, axial depth of cut, and angles of cutting entry and exit. Heat source during cutting process was considered as instantaneous moving rectangular heat source and heat conducting function in infinite solid thermal conductivity was developed. Experiments measuring cutting force and workpiece temperature were launched to test validity of this model and figure out the importance of effects those factors have on workpiece temperature from variance analysis of orthogonal experiment results. Furthermore, simulations to calculate peak temperature of workpiece were carried out by this model with relevant machining parameters and the results matched conclusions from experiment well.

scholarly journals The Milling Process Monitoring Using 3D Envelope Method

2011 ◽  
Vol 423 ◽  
pp. 77-88 ◽  
Author(s):  
Claudiu Bisu ◽  
Alain Gerard ◽  
Miron Zapciu ◽  
Olivier Cahuc
Keyword(s):  
Three Dimensional ◽  
Cutting Parameters ◽  
Milling Process ◽  
Quantitative Characterization ◽  
Envelope Analysis ◽  
Milling Tool ◽  
Envelope Method ◽  
On Line ◽  
Cutting Capacity

This paper proposes a method to vibration analysis in order to on-line monitoring of milling process quality. Adapting envelope analysis to characterize the milling tool materials is an important contribution to the qualitative and quantitative characterization of milling capacity and a step by modeling the three-dimensional cutting process. An experimental protocol was designed and developed for the acquisition, processing and analyzing three-dimensional signal. The vibration envelope analysis is proposed to detect the cutting capacity of the tool with the optimization application of cutting parameters. The research is focused on Hilbert transform optimization to evaluate the dynamic behavior of the machine/ tool/workpiece.

scholarly journals Optimization Milling Process When Machining C45 Steel by Ball Nose Mill for Minimum Tool Wear using Taguchi Method

2019 ◽  
pp. 476-479
Author(s):  
Vu Nhu Nguyet ◽  
Do Duc Trung
Keyword(s):  
Tool Wear ◽  
Taguchi Method ◽  
Experimental Research ◽  
Cutting Parameters ◽  
Milling Process ◽  
Experimental Result

In this paper, Taguchi method with L16 was used to experimental research in order to present the influence of cutting parameters and feed way on the tool wear when machining C45 by ball nose mill. The experimental result shows the influence of above parameters on tool wear and the value of cutting parameters and feed way for minimum of tool wear.

The Surface Roughness Modeling on Turn-Milling Process and Analysis of Influencing Factors

2011 ◽  
Vol 117-119 ◽  
pp. 1614-1620 ◽  
Author(s):  
Song Mei Yuan ◽  
Wei Wei Zheng
Keyword(s):  
Surface Roughness ◽  
Geometric Model ◽  
Cutting Speed ◽  
Design Feature ◽  
Cutting Parameters ◽  
Milling Process ◽  
Machining Process ◽  
Rotating Speed ◽  
Movement Parameters ◽  
Turn Milling

Surface roughness plays an important role in product quality and has received serious attention for many years. It has formulated an important design feature in many situations such as parts subject to fatigue loads、precision fits、fastener holes and aesthetic requirements. In addition to tolerances, surface roughness imposes one of the most critical constraints for the selection of machines and cutting parameters in process planning. This paper focuses on developing a geometric model of turn-milling process in order to predict the surface roughness effectively so that we can offer reference or consulting in the practical machining process. The surface roughness model takes into account both cutting parameters and movement parameters such as cutter radius feed per tooth 、 cutting speed 、number of teeth 、cutters' eccentricity、 depth of cutting、spindle rotating speed and so on. Through this model, we discussed the influencing effects of various cutting parameters on the surface roughness and analyze which one has the most important impact.

scholarly journals Research on Cutting Force of Turn-Milling Based on Thin-Walled Blade

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Lida Zhu ◽  
Baoguang Liu ◽  
Xiaobang Wang ◽  
Zhiwei Xu
Keyword(s):  
Cutting Force ◽  
Cutting Forces ◽  
Metal Removal ◽  
Cutting Parameters ◽  
Milling Process ◽  
Cutting Condition ◽  
Deformation Properties ◽  
Mechanism Research ◽  
Thin Walled ◽  
Turn Milling

Turn-milling is regarded as the milling of a curved surface while rotating the workpiece around its center point, which combines effectively the advantages of both turning and milling, wherein it allows for good metal removal with the difficult-to-cut thin-walled workpieces in aviation. The objective of the present work is to study cutting force by turn-milling in cutting condition. Aiming at the deformation properties of thin-walled blade, the predicted models of rigid cutting force and flexible cutting force with ball cutter are provided, respectively, in turn-milling process. The deformation values of blade and cutter are calculated, respectively, based on the engaged trajectory by using the iterative algorithm. The rigid and flexible cutting forces are compared and the influence degrees of cutting parameters on cutting forces are analyzed. These conclusions provide theoretical foundation and reference for turn-milling mechanism research.

scholarly journals Optimization and Tuning of Passive Tuned Mass Damper Embedded in Milling Tool for Chatter Mitigation

2020 ◽  
Vol 5 (1) ◽  
pp. 2
Author(s):  
Wenshuo Ma ◽  
Jingjun Yu ◽  
Yiqing Yang ◽  
Yunfei Wang
Keyword(s):  
Tuned Mass Damper ◽  
Structural Features ◽  
Milling Process ◽  
Diameter Ratio ◽  
Depth Of Cut ◽  
Receptance Coupling ◽  
Milling Tool ◽  
Mass Damper ◽  
Large Length ◽  
Deep Depth

Milling tools with a large length–diameter ratio are widely applied in machining structural features with deep depth. However, their high dynamic flexibility gives rise to chatter vibrations, which results in poor surface finish, reduced productivity, and even tool damage. With a passive tuned mass damper (TMD) embedded inside the arbor, a large length–diameter ratio milling tool with chatter-resistance ability was developed. By modeling the milling tool as a continuous beam, the tool-tip frequency response function (FRF) of the milling tool with TMD was derived using receptance coupling substructure analysis (RCSA), and the gyroscopic effect of the rotating tool was incorporated. The TMD parameters were optimized numerically with the consideration of mounting position based on the maximum cutting stability criterion, followed by the simulation of the effectiveness of the optimized and detuned TMD. With the tool-tip FRF obtained, the chatter stability of the milling process was predicted. Tap tests showed that the TMD was able to increase the minimum real part of the FRF by 79.3%. The stability lobe diagram (SLD) was predicted, and the minimum critical depth of cut in milling operations was enhanced from 0.10 to 0.46 mm.

Sign in / Sign up

Export Citation Format

Share Document