Perencanaan Trunion Fixture Untuk Proses Machining Part Headstock Pada MTU-150 Tathe di PT. CNC Controller Indonesia - Design Of Trunion Fixture For Part Machining Process Of Headstock On Mtu-150 Lathe At PT. CNC Controller Indonesia

Pramudya, Dias Syah Aji (2018) Perencanaan Trunion Fixture Untuk Proses Machining Part Headstock Pada MTU-150 Tathe di PT. CNC Controller Indonesia - Design Of Trunion Fixture For Part Machining Process Of Headstock On Mtu-150 Lathe At PT. CNC Controller Indonesia. Diploma thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Headstock merupakan komponen penting dari mesin bubut konvensional ataupun non-konvensional (MTU-150 LATHE). Komponen ini berfungsi sebagai penopang atau dudukan spindle shaft yang terhubung dengan chuck, sehingga komponen ini memiliki line center yang lurus dengan sumbu x pada mesin. Part headstock MTU-150 LATHE merupakan hasil pengecoran gray cast iron yang masih melalui proses pemesinan, salah satunya pada bagian lubang dudukan bearing spindle shaft. Seringkali saat proses pemesinan ini muncul permasalahan hasil tidak center, sebab pada pengerjaannya hanya mengandalkan sistem pencekaman pada ragum. Maka dibutuhkanlah jig and fixture yang menggunakan satu kali proses loading tanpa harus mengalami reposisi pada benda kerja. Dan untuk mendapatkan line center pengerjaan antara dua lubang dudukan bearing, oleh karena itu dirancanglah konsep trunion fixture pada part headstock ini. Langkah pertama dalam menganalisa konstruksi trunion fixture menggunakan bantuan software Autodesk Inventor dilakukan pemilihan bentuk atau jenis locator lalu dilakukan perancangan desain trunion fixture dalam bentuk 3D. Selanjutnya, penentuan material serta analisa konstruksi trunion fixture menggunakan stress analysis pada menu yang terdapat dalam fitur Autodesk Inventor. Stress analysis digunakan untuk menganalisa dan menentukan nilai tegangan yang terjadi pada desain trunion fixture. Pada trunion fixture dilakukan analisa derajat kebebasan pada pencekaman dengan sistem ulir pengunci yang terhubung dengan moving cone locator dan kontur locator tersebut didapatkan hasil bahwa trunion fixtureini mampu mematikan 11 derajat kebebasan dan saat proses clamp dengan cone locator dapat mematikan ke 12 derajat kebebasan benda kerja. Dengan memberikan gaya pada kedua pillar sebesar 54,352 N menggunakan software Autodesk Inventor tersebut maka didapatkan tegangan maksimum von mises stress analysis 13,88 MPa. Hasil perhitungan manual dari Maksimum Shear Stress Theory diperoleh nilai S_yp?0,122 MPa. Dari semua nilai tegangan maksimum yang didapat dari hasil pengujian memiliki nilai lebih kecil dari tegangan maksimum material yang diizinkan sebesar 345 MPa. Maka desain dan konstruksi bisa dikatakan aman dan mampu menahan berat dari benda kerja serta gaya pada proses pemesinan.======================================================================================================== Headstock is an important component of conventional or non-conventional lathes (MTU-150 LATHE). This component serves as a support or spindle shaft holder connected to the chuck, so this component has a straight line center with the x axis on the machine. MTU-150 LATHE headstock part is the result of gray cast iron casting which is still through the machining process, one of which is in the spindle shaft bearing mounting hole. Often when this machining process arises the results are not center problems, because the process only relies on the gripping system in the vise. Then it takes a jig and fixture that uses a single loading process without having to reposition on the workpiece. And to get the line center work between two bearing bearing holes, therefore the concept of a trunion fixture is designed on this headstock part. The first step in analyzing the trunion fixture construction using the help of Autodesk Inventor software is the selection of the form or type of locator and the design of the fixture trunion design in 3D. Furthermore, the determination of material and trunion fixture construction analysis using stress analysis on the menu contained in Autodesk Inventor feature. Stress analysis is used to analyze and determine the voltage value that occurs in the fixture trunion design. In the trunion fixture, a degree of freedom analysis on the grip with a locking screw system is connected to the moving cone locator and contour locator and the result is that the fixture trune is able to turn off 11 degrees of freedom and when the clamp process with the cone locator can turn off to 12 degrees of workpiece. By giving style to the two pillars of 54,352 N using the Autodesk Inventor software, the maximum voltage of von mises stress analysis is 13.88 MPa. The results of the manual calculation of the Maximum Shear Stress Theory obtained the value of S_yp?0.122 MPa. Of all the maximum voltage values obtained from the test results, the value is less than the maximum permissible material voltage of 345 MPa. Then the design and construction can be said to be safe and able to withstand the weight of the workpiece and the style of the machining process.

Item Type: Thesis (Diploma)
Additional Information: RSMI Pra p
Uncontrolled Keywords: trunion fixture, stress analysis, derajat kebebasan, headstock, locator, trunion fixture, stress analysis, degrees of freedom, headstock, locator.
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ213 Automatic control.
Divisions: Faculty of Vocational > Mechanical Industrial Engineering
Depositing User: Dias Syah Aji Pramudya
Date Deposited: 13 Dec 2018 07:03
Last Modified: 13 Dec 2018 07:03
URI: http://repository.its.ac.id/id/eprint/59193

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