Component Loss due to the Fracture of an Indexable Insert

Knowing temperatures at the tool-chip interface is extremely important to optimize the machining condition and to improve the machining performance, furthermore to design high performance materials. In order to grasp the temperature distribution at the tool-chip interface, this study has devised an indexable insert with seven pairs of built-in micro Cu/Ni thermocouples on the rake face near the cutting edge. This paper shows the performance of the indexable insert with built-in micro thermocouples developed. The thickness of each element of the micro thermocouple is approximately 15 μm. The result of unsteady heat conduction analysis employing FEM shows that the temperature difference by installing the micro thermocouples is less than 10 K or 1.2 %. The temperature measurement experiments by cutting of aluminum alloy were carried out by changing the cutting speed. The results provided the evidence that the temperature distribution at the tool-chip interface can be grasped with the indexable insert with built-in micro thermocouples developed.

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Cutting Characteristics of Indexable Insert Drill with Non-Axisymmetrical Geometry and Effects of MQL

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C ◽

10.1299/kikaic.77.4297 ◽

2011 ◽

Vol 77 (783) ◽

pp. 4297-4307 ◽

Cited By ~ 1

Author(s):

Masato OKADA ◽

Takashi UEDA ◽

Akira HOSOKAWA

Keyword(s):

Indexable Insert ◽

Indexable Insert Drill

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Effect of Insert Angles on Cutting Tool Geometry

Journal of Engineering Sciences ◽

10.21272/jes.2020.7(2).a1 ◽

2020 ◽

Vol 7 (2) ◽

pp. A1-A6

Author(s):

S. V. Shvets ◽

V. P. Astakhov

Keyword(s):

Coordinate System ◽

Cutting Tool ◽

Tool Geometry ◽

Output Link ◽

Base Surface ◽

Level Lines ◽

Static Coordinate System ◽

Intersection Line ◽

Indexable Insert ◽

Modern Tool

An analysis of publications has shown that mechanically clamped indexable inserts are predominantly used in modern tool manufacturing. Each insert has its shape and geometry in the tool coordinate system. The static system’s required geometry is achieved by the tilting of the insert pocket in the radial and axial directions. Therefore, it is of great importance in the tool design to know the relationships between the insert’s geometry parameters in the tool coordinate system where the geometry paraments of the insert are defined and working geometry parameters of the tool defined in the static coordinate system. The paper presents the developed methodology for determining the insert pocket base surface position to ensure the required values of the tool geometry parameters of the selected indexable insert in the static coordinate system. The graphs of the dependence of each of the angles of the insert geometry on the angles of rotation of this insert in the front and profile planes are presented as the level lines for practical use. Using these graphs, one can optimize all geometric insertion parameters in the static coordinate system. The model of the calculations of the mechanism of the insert clamping by a screw is developed. The basic size and tolerance of the output link determine the distance from the intersection line of the base surfaces to the thread axis on the pocket and the minimum amount of the screw stroke on the insert clamping in the pocket. Keywords: indexable insert, cutting tool, coordinate system, base surfaces, geometric parameters.

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Development of the new-type indexable inserts with helical rake faces

Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture ◽

10.1243/0954405971516149 ◽

1997 ◽

Vol 211 (2) ◽

pp. 159-164 ◽

Cited By ~ 1

Author(s):

N Fang ◽

M Wang ◽

C Nedeß

Keyword(s):

Cutting Force ◽

Rake Angle ◽

Radial Force ◽

Geometric Parameters ◽

Cutting Conditions ◽

Rake Face ◽

Tool Insert ◽

Tool Force ◽

New Type ◽

Indexable Insert

A kind of new-type indexable insert with a three-dimensionally shaped rake face, namely the helical rake face, is developed in this present work, contributing to the formation of short conical helical chips acceptable for modern automated and unattended machining systems. The geometric parameters of the helical rake face consist of the helical gradient, the helical length, the beginning rake angle at the tool nose and the end rake angle on the cutting edge. The influences of these parameters on the side-curling of the chip and on the chip breakability are investigated. Under the cutting conditions employed in this paper, the cutting force measuring results show that the cutting component of the resultant tool force and the radial force when using the tool insert with the helical rake face are less than those when using the type CNMG120408-ZF tool insert, a kind of commercially available insert widely used.

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Research on Forming Theory of Arc Transition Edge Surface of Indexable Insert

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.513-517.4206 ◽

2014 ◽

Vol 513-517 ◽

pp. 4206-4209

Author(s):

Ming Jun Peng ◽

Meng Meng Wang ◽

Bin Yao ◽

Yin Song

Keyword(s):

Mathematical Model ◽

Forming Process ◽

Theoretical Derivation ◽

Transition Edge ◽

Edge Surface ◽

Indexable Insert ◽

Forming Methods

Generally, the indexable inserts carry out work with arc transition edges, which have a wiping effect on surface under processing and reduce the roughness of the surface. [ However, existing literatures lack research on the forming of arc transition edge surface. In this paper, the unified mathematical model and forming methods of different arc transition edge surfaces were presented, which can be used for other forming process. The mathematic models deduced would lay the most important foundation for manufacturing indexable inserts automatically. The models presented could also be extended for study on some complicated transition surfaces. Finally, the simulation was done and the result verified the theoretical derivation.

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