DAFTAR ISI

KATA PENGANTAR ...………………………………………………………. i

LEMBAR PENGESAHAN …………….…………………………………....... ii

LEMBAR REKAPITULASI HASIL TUGAS RANCANG…………….......... iii

DAFTAR HADIR ASISTENSI …..………….……………………………….. iv

DAFTAR ISI ………………………………..…………………………………. x

BAB I PENDAHULUAN........................................................................................1

1.1 Latar belakang...........................................................................................1

1.2 Maksud dan Tujuan...................................................................................1

BAB II TINJAUAN PUSTAKA …………………………………………………2

2.1 Hukum Hooke…………………………………………………………. 2

2.2 Roda gigi ................................................................................................4

2.2.1 Roda gigi lurus ( spur gear )..............................................................4

2.2.2 Roda gigi miring ( hellical gear )......................................................5

2.2.3 Roda gigi cacing ( worm gear ).........................................................6

2.2.4 Roda gigi kerucut ( bevel gear )........................................................6

2.2.5 Screw gear..........................................................................................7

2.2.6 Hypoid gear........................................................................................7

2.3 Rumus dasar roda gigi.............................................................................8

2.4 Poros........................................................................................................15

2.5 Pasak ( keys )............................................................................................18

2.5.1 Rumus dasar pasak.............................................................................22

2.6 Bantalan ( bearing ).................................................................................24

2.6.1 Klasifikasi bantalan............................................................................24

2.6.2 Macam-macam bantalan luncur.........................................................25

2.6.3 Rumus dasar bantalan........................................................................26

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BAB III MEKANISME SISTEM TRANSMISI..................................................29

3.1 Input data.................................................................................................28

3.1.1 Perhitungan menggunakan roda gigi..............................................28

3.1.2 Perhitungan menggunakan poros....................................................28

3.2 Sket Gearbox............................................................................................29

3.2.1 Gambar sket Gearbox.....................................................................29

3.3 Gambar sket Gearbox di setiap tingkat kecepatan...................................30

3.3.1 Tingkat kecepatan 1 (n) = 600 rpm.................................................31

3.3.2 Tingkat kecepatan 2 (n) = 1500 rpm...............................................32

3.3.3 Tingkat kecepatan 3 (n) = 2400 rpm...............................................33

3.3.4 Tingkat kecepatan 4 (n) = 2800 rpm...............................................34

3.3.5 Tingkat kecepatan 5 (n) = 3200 rpm...............................................35

3.3.6 Tingkat kecepatan revers (nR) = 1000 rpm....................................36

BAB IV PEMBAHASAN SISTEM TRANSMISI................................................37

4.1 Perhitungan roda gigi...............................................................................37

4.1.1 Perhitungan roda gigi 1 dan 2...........................................................37

4.1.2 Perhitungan roda gigi 3 dan 4...........................................................42

4.1.3 Perhitungan roda gigi 5 dan 6...........................................................47

4.1.4 Perhitungan roda gigi 7,8 dan 9........................................................52

4.2 Perencanaan poros...................................................................................62

4.2.1 Perencanaan poros 1.........................................................................62

4.2.1.1 Perencanaan diameter poros 1....................................................69

4.2.1.2 Perencanaan poros bintang pada poros 1....................................71

4.2.2 Perencanaan poros 2.........................................................................73

4.2.2.1 Perencanaan poros pada kondidi 3.............................................76

4.2.2.2 Perencanaan diameter poros 2...................................................78

4.2.3 Perencanaan poros 3........................................................................80

4.2.3.1 Perencanaan diameter poros 3...................................................82

4.3 Perencanaan pasak..................................................................................83

4.4 Perencanaan bantalan..............................................................................86

4.4.1 Perencanaan bantalan pada poros 1..................................................86

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4.4.2 Perencanaan bantalan pada poros 2..................................................87

4.4.3 Perencanaan bantalan pada poros 3..................................................88

BAB V KESIMPULAN ........................................................................................90

SARAN......................................................................................................................91

DAFTAR PUSTAKA.........................................................................................92

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