Satria, Denis (2020) Pengaruh Helix Angle Terhadap Chatter Vibration dan Stability Lobe Diagram Stainless Steel AISI 304 Pada Low Speed Machining Process. Sarjana thesis, Universitas Brawijaya.
Abstract
Di era modern ini, perkembangan teknologi di bidang elektronik, otomotif, transportasi dan komunikasi sangat berkaitan erat dengan kehidupan kehidupan manusia. Berkembangnya bidang-bidang tersebut juga membutuhkan peningkatan proses manufaktur dalam hal kualitas dan kuantitas. Salah satu teknologi yang digunakan untuk proses produksi dengan kriteria tersebut adalah menggunakan Computer Numerically Controlled (CNC) dengan mesin Vertical Machining Center (VMC). Akan tetapi masih terdapat masalah yang dapat mengurangi kualitas produk pada proses slot milling yaitu chatter. Chatter menyebabkan suara bising pada mesin dan menghasilkan permukaan produk yang tidak halus. Untuk mengurangi dampak hal tersebut, seorang process planner bertanggung jawab untuk memilih parameter permesinan yang tepat, seperti spindle speed (rpm), depth of cut dan helix angle. Dalam penelitian ini Stability Lobe Diagram dibuat pada proses slot milling Stainless Steel AISI 304 menggunakan pahat normal helix (30o) dan variable helix (36 o/38o) berdiameter 6 mm. Spindle speed divariasikan 1000, 1250, 1500, dan 1750 rpm dengan depth of cut yang bervariasi hingga didapat ketidakstabilan akselerasi pada proses permesinan. Stablity Lobe Diagram yang didapat akan digunakan sebagai acuan yang dapat digunakan untuk proses permesinan pada Stainless Steel AISI 304 agar memperoleh kualitas produk yang optimal. Hasil penelitian menunjukkan bahwa chatter yang terjadi lebih rendah jika menggunakan variable helix cutting tool dibandingkan normal helix cutting tool. Hasil proses permesinan menggunakan variable helix cutting tool memiliki nilai kekasaran yang lebih rendah jika dibandingkan dengan normal helix cutting tool.
English Abstract
In this modern era, technological developments in the fields of electronics, automotive, transportation and communication are very closely related to human life. The development of these fields also requires an improvement in the manufacturing process in terms of quality and quantity. One of the technologies used for the production process with these criteria is to use a Computer Numerically Controlled (CNC) with a Vertical Machining Center machine (VMC). However, there are still problems that can reduce product quality in the slot milling process, called chatter. Chatter causes noise on the engine and results in a non-smooth product surface. To reduce the impact of chatter, a process planner is responsible for choosing the right machining parameters, such as spindle speed (rpm), depth of cut and helix angle. In this study, the Stability Lobe Diagram was made in the AISI 304 Stainless Steel slot milling process using a normal helix (30o) and a variable helix (36 o/38o) with 6 mm diameter. Spindle speed is varied 1000, 1250, 1500, and 1750 rpm with varying depth of cut to obtain acceleration instability in the machining process. The obtained Stablity Lobe Diagram will be used as a reference that can be used for machining processes on AISI 304 Stainless Steel in order to obtain optimal product quality. Results of this research shows that the chatter that occurred was lower when using a variable helix cutting tool than a normal helix cutting tool. The results of the machining process using a variable helix cutting tool has a lower roughness value than the normal helix cutting tool.
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0520070089 |
| Uncontrolled Keywords: | slot milling, chatter, spindle speed, variable helix, kekasaran permukaan, stability lobe diagram , slot milling, chatter, spindle speed, variable helix, surface roughness, stability lobe diagram |
| Subjects: | 600 Technology (Applied sciences) > 621 Applied physics > 621.8 Machine engineering > 621.81 General topics of machine engineering |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | Bambang Septiawan |
| Date Deposited: | 05 Feb 2021 23:15 |
| Last Modified: | 12 Jan 2023 03:57 |
| URI: | http://repository.ub.ac.id/id/eprint/182409 |
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