Experimental research of ploughing extrusion forming multi-tooth tool wear and damage mechanism and workpiece defects

2021 ◽  
pp. 1-10
Author(s):  
Ming Li ◽  
Rui Fan ◽  
Yuhang He ◽  
Fengxia Xu ◽  
Youjie Cai ◽  
...  
Keyword(s):  
Tool Wear ◽  
Experimental Research ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Damage Mechanism ◽  
Processing Parameters ◽  
Extrusion Forming ◽  
Cutting Experiments ◽  
Tooth Cutting

According to the characteristics of ploughing extrusion forming and the theory of metal cutting, the wear and damage mechanism, common wear and damage forms and causes of multi-tooth tools in ploughing extrusion forming are analyzed. Then, the correctness of the analysis of tool wear and damage mechanism and common wear and damage forms is verified by field cutting experiments. At the same time, the phenomena and causes of workpiece stagnation and cracks in the process of ploughing and extrusion forming were obtained through experiments. Finally, the reasonable processing parameters of ploughing and extrusion forming multi-tooth cutting tool were obtained.

scholarly journals Comparison contact and thermal imaging methods measure the temperatures of the turning blades during cutting

Mechanik ◽  
2017 ◽  
Vol 90 (3) ◽  
pp. 214-216
Author(s):  
Karol Grochalski ◽  
Piotr Jabłoński
Keyword(s):  
Tool Wear ◽  
Thermal Imaging ◽  
Cutting Tool ◽  
Processing Parameters ◽  
Machining Process ◽  
Influence Of Temperature ◽  
Imaging Methods ◽  
Advantages And Disadvantages ◽  
Influence Of Temperature On ◽  
Materials Used

The paper presents a method of measuring the temperature during cutting and its impact on the machining process. The influence of temperature on the intensity of the cutting tool wear cutting and durability. Shows the measuring position, the materials used and the cutting tool. We present the results of the processing parameters, during which the measurements are made. This paper presents methods for measuring the temperature of the blade using a thermocouple and methods of radiation. It lists the advantages and disadvantages of each method.

Experimental research on the deep-hole boring of pure niobium tube

2020 ◽  
Vol 234 (8) ◽  
pp. 1124-1132
Author(s):  
Xiaolan Han ◽  
Zhanfeng Liu ◽  
Yazhou Feng
Keyword(s):  
Surface Roughness ◽  
Tool Wear ◽  
Experimental Research ◽  
Process Parameters ◽  
Cutting Tool ◽  
Geometric Parameters ◽  
Deep Hole ◽  
High Quality ◽  
Pure Niobium ◽  
Hole Axis

In the deep-hole boring process on pure niobium tube, there exist some problems including serious tool wear, tough chips, and poor surface quality. In order to bore high-quality deep holes on rolled niobium tube, the cutting tool structure and boring process parameters suitable for machining rolled niobium tube were designed and two experimental schemes were proposed. The results showed that the geometric parameters of the cutting tool and process parameters have important influences on the tool wear, chip morphologies, hole-axis deflection, and hole surface roughness. By adjusting the geometric parameters of the cutting tool and boring process parameters, reasonable geometric parameters of the cutting tool and boring process parameters were obtained.

scholarly journals Influence of machining conditions on friction in metal cutting process – A review

Mechanik ◽  
2019 ◽  
Vol 92 (4) ◽  
pp. 242-248
Author(s):  
Wit Grzesik ◽  
Joel Rech
Keyword(s):  
Tool Wear ◽  
Contact Zone ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Sliding Velocity ◽  
Contact Conditions ◽  
Tool Materials ◽  
Cutting Zone ◽  
Cooling Media ◽  
Cutting Tool Materials

This paper presents a range of variable machining factors which influence substantially friction directly or by the tool wear developed in the cutting zone. The group of direct factors include the workpiece and cutting tool materials coupled, the cutting/sliding velocity, cooling media supplied to the tool-chip contact zone, modification of the tool contact faces by micro-texturing. Special attention was paid to the tool wear evolution and its pronounced effect on changes of the contact conditions.

Reliability Analysis of Cutting Tools

1979 ◽  
Vol 101 (2) ◽  
pp. 185-190 ◽  
Author(s):  
K. Hitomi ◽  
N. Nakamura ◽  
S. Inoue
Keyword(s):  
Tool Wear ◽  
Reliability Analysis ◽  
Tool Life ◽  
Metal Cutting ◽  
Cutting Tools ◽  
Reliability Function ◽  
Statistical Distribution ◽  
Experimental Results ◽  
Machining Parameters ◽  
Cutting Experiments

This paper is concerned with the reliability analysis of tool life based on the tool-wear values obtained from metal cutting experiments. From experimental results, a statistical distribution of tool wear was decided, and the distribution of tool life and the reliability function of cutting tools were derived. Further, it was shown that the reliability of cutting tools at a certain time was easily calculated from machining parameters and tool-wear limits by the use of reliability function.

scholarly journals A Review of Indirect Tool Condition Monitoring Systems and Decision-Making Methods in Turning: Critical Analysis and Trends

Sensors ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 108
Author(s):  
Mustafa Kuntoğlu ◽  
Abdullah Aslan ◽  
Danil Yurievich Pimenov ◽  
Üsame Ali Usca ◽  
Emin Salur ◽  
...  
Keyword(s):  
Tool Wear ◽  
Condition Monitoring ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Complex Structure ◽  
Tool Condition Monitoring ◽  
Monitoring Systems ◽  
Tool Condition ◽  
Condition Monitoring Systems ◽  
Cutting Zone

The complex structure of turning aggravates obtaining the desired results in terms of tool wear and surface roughness. The existence of high temperature and pressure make difficult to reach and observe the cutting area. In-direct tool condition, monitoring systems provide tracking the condition of cutting tool via several released or converted energy types, namely, heat, acoustic emission, vibration, cutting forces and motor current. Tool wear inevitably progresses during metal cutting and has a relationship with these energy types. Indirect tool condition monitoring systems use sensors situated around the cutting area to state the wear condition of the cutting tool without intervention to cutting zone. In this study, sensors mostly used in indirect tool condition monitoring systems and their correlations between tool wear are reviewed to summarize the literature survey in this field for the last two decades. The reviews about tool condition monitoring systems in turning are very limited, and relationship between measured variables such as tool wear and vibration require a detailed analysis. In this work, the main aim is to discuss the effect of sensorial data on tool wear by considering previous published papers. As a computer aided electronic and mechanical support system, tool condition monitoring paves the way for machining industry and the future and development of Industry 4.0.

scholarly journals Methods and devices for measuring metal cutting friction and wear

Mechanik ◽  
2019 ◽  
Vol 92 (2) ◽  
pp. 85-89
Author(s):  
Wit Grzesik ◽  
Joel Rech
Keyword(s):  
Heat Flux ◽  
Tool Wear ◽  
Friction And Wear ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Cutting Temperature ◽  
Practical Applications ◽  
Measuring Techniques ◽  
Cutting Zone

This paper presents different constructions of tribometers for determination of friction and tool wear developed in the cutting zone between the cutting tool and the workpiece materials. They are classified as the closed and open tribotesters. Relevant measuring techniques of various process outputs such as cutting forces, tool wear, cutting temperature and heat flux entering the contact surface of the rubbing element are outlined. Some limitations and practical applications are highlighted.

Analysis of a Tool System with a Four Axes Flexible Fixture

2010 ◽  
Vol 154-155 ◽  
pp. 1348-1355 ◽  
Author(s):  
Hung Ying Huang ◽  
Kuang Hua Fuh ◽  
Jung Shu Wu
Keyword(s):  
Cutting Tool ◽  
Cutting Tools ◽  
Processing Parameters ◽  
Systematic Design ◽  
Workpiece Surface ◽  
The Third ◽  
Cutting Processes ◽  
Cutting Experiments ◽  
Hard Cutting ◽  
Grinding And Polishing

This study is to develop a tool system, which is formed by a series of procedures, modifications, and assemblies, and to learn how processing characteristics are affected and what various processing parameters are. According to the cutting tool compressibility and clamping devices of rigidity and flexibility, three distinct combinations are as follows, that is (1) rigid clamping devices with hard cutting tools, (2) flexibile clamping devices with hard cutting tools, and (3) rigid clamping devices with soft cutting tools. The first are generally cutting processes, while the second are polishing processes and the third produce milling wipe or grinding and polishing compound processes. The cutting part is quite different and may cause different accuracy and removing rate. The mixture processes, such as turn-burnishing, milling-burnishing and grind-polishing, are existed. If certain flexible clamping devices with hard cutting tools are formed, the most suited to this process will be practical benefits. Considering the flexible cutting tools of clamping devices are less systematically designed, this study would mainly focus on the establishment of a systematic design, and actual cutting to explore its applications. In order to take into account the characteristics of flexibility and reduction of the retardation when connected, meanwhile, to meet not only the fixture complexity and availability (being easy) to manufacturing, but also to fit the strength and processing requirements, the systematic design is to create a tool system. After some cutting experiments have been conducted, the results proved that different degrees of flexibility on the workpiece surface would lead to different degrees of accuracy.

The Effect of Speed and Feed on the Mechanics of Metal Cutting

1951 ◽  
Vol 165 (1) ◽  
pp. 1-13 ◽  
Author(s):  
B. T. Chao ◽  
G. H. Bisacre
Keyword(s):  
Shear Strength ◽  
Tool Wear ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Cutting Speed ◽  
Logical Theory ◽  
Wide Range ◽  
Metal Cutting Tool ◽  
Striking Effect ◽  
Made In

When the cutting speed or feed of a metal cutting tool is increased, the most striking effect is on the rate of tool wear, but there are other changes which take place at the same time. These are changes in the geometry of the chip, tool forces, and tool build-up and surface finish. An attempt is made in this paper to form a logical theory to explain these variations in the mechanics of the process. The problem of tool wear is not attempted. A series of tests has been conducted on mild steel and copper, over a wide range of speed, feed, and tool angle; and a theory has been developed. The results arrived at are:— (1) That local temperature in the chip plays an important part in affecting the friction at the chip tool interface. (2) For many purposes effects due to speed and feed can be treated as functions of the product of speed and feed. (3) Temperature does not affect the shear strength of the metal directly. (4) The extent of built-up edge prevailing can be put as a function of the product of speed and feed.

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