ANALISIS PERUBAHAN BENTUK BENDA KERJA PADA PROSES DOWN MILLING TITANIUM Ti6Al4V DENGAN SOFTWARE AUTODESK

AL KHAHFI, FURQON and Yani, Irsyadi (2018) ANALISIS PERUBAHAN BENTUK BENDA KERJA PADA PROSES DOWN MILLING TITANIUM Ti6Al4V DENGAN SOFTWARE AUTODESK. Undergraduate thesis, Sriwijaya University.

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Abstract

Miling is the process of cutting a workpiece using a cutting tool with rotating plural cutting eyes. The cutting process with many cutting teeth surrounding this knife can produce a faster machining process. Slashed surfaces can be flat, angled or curved. The surface of the workpiece can also be in the form of a combination of several forms, the milling machine is mechanically controlled (conventional manual) and with the help of CNC. Titanium alloy is a metal containing a mixture of alloys which have very high strength, have high corrosion resistance and the ability to Load bearing is considered an important engineering material for industrial applications because of its good strength to weight ratio, corrosion resistance and resistance at high temperatures. Regarded as the best engineering material for industrial applications because of its good strength to weight ratio, superior corrosion resistance in the application of high temperatures to be used in industrial fields. Types of milling cutters are classified into three types of milling cutter consisting of slab milling, face milling, and end milling, each of which has its own function. Deformation usually has a direction that is in line with loading and is distributed according to the geometric contact between asperity and chisel. For asperity that is farther from the center of the tool when in contact with the object it will deform rather towards the exit. In this study we will look for deformation values in the down milling process of Titanium Ti6Al4V using Simulation Mechanical Autoses using carbide tools and workpieces Titanium Ti6Al4V Many finite element models (FEMs) have been developed, including orthogonal cutting models, oblique cutting models and 3D FEM. Orthogonal FEM is more widely used to investigate the cutting mechanism of FEM which has been more clearly developed simulating the complex grinding process of Ti6Al4V titanium alloy, The workpiece is modeled as a structure with the bottom held down, while the other three ends are free. The effect of vibration from the thin wall structure that occurs during machining is not considered in this work, as well as the initial temperature of the tool and workpiece are set at room temperature, titanium Ti6Al4V which is a hard to cut material because it has a high modulus of elasticity. Deformation in the down milling process based on the simulation results using the Static Stress with Linear Material Model method gets the maximum Displacement Number (0.0011382 m) and minimum Displacement (0.000699821), Maximum stress rate (1.8953e + 012 N / m2 ) and stress numbers (5.91782e + 007 N / m2), the maximum number of strains (13.9735 m / m) the minimum strain (0,000590216 m / m) and the maximum Safety Factor (5800,82) minimum safety factor (0, 00100863) and the number of safety factors in the tool section that come into contact with the workpiece get results (1.2827703). The conclusion of this study is the greater the Torque given then a the greater the displacement rate, stress and strain that will be obtained and the hardness of the workpiece is very influential in this milling process. Because the harder the workpiece is, the longer it will take to do the machining process.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Milling Process, Deformation, Ti-6Al-4V, Carbide tool
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1-1570 Mechanical engineering and machinery T Technology > TS Manufactures > TS200-770 Metal manufactures. Metalworking
Divisions:	03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User:	Prodi S1-Teknik Mesin (21201)
Date Deposited:	10 Jul 2019 02:05
Last Modified:	21 Jul 2019 09:05
URI:	http://repository.unsri.ac.id/id/eprint/57

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