Page 7 - E-Modul Teknik Pemesinan Bubut 1_2022
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6. Pahat ulir ............................................................................................................................... 50
H. Geometris pahat bubut ....................................................................... 51
1. Pahat bubut rata ................................................................................................................ 51
2. Pahat bubut muka/ facing .............................................................................................. 51
3. Pahat bubut ulir segitiga ................................................................................................. 52
4. Pahat bubut ulir segi empat ........................................................................................... 53
5. Pahat bubut potong ........................................................................................................... 54
I. Teknik pemasangan pahat bubut ......................................................... 54
1. Cara memasang pahat bubut yang baik dan benar ............................................... 54
2. Hal-hal yang perlu diperhatikan ................................................................................... 54
3. Kesalahan pemasangan pahat bubut .......................................................................... 56
J. Kerusakan pahat bubut ....................................................................... 59
1. Radius pada ujung ............................................................................................................. 59
2. Keausan pada bidang bebas muka .............................................................................. 60
3. Keausan pada bidang potong ......................................................................................... 60
4. Built up cutting edges ........................................................................................................ 61
5. Keretakan pada pahat bubut sisipan/ tip carbide.................................................. 61
6. Tip carbide pecah ............................................................................................................... 62
7. Tip carbide lepas ................................................................................................................. 62
K. Alat potong mesin bubut (selain pahat bubut) ..................................... 63
1. Bor senter/ Centre Drill .................................................................................................... 63
2. Konter bor/ Counter Bor ................................................................................................... 65
3. Kontersing/ Countersink ................................................................................................. 65
4. Mata bor................................................................................................................................. 69
5. Rimer/ Reamer .................................................................................................................... 72
6. Kartel (knurling) ................................................................................................................... 75
RANGKUMAN .......................................................................................... 80
LATIHAN SOAL ....................................................................................... 81
DAFTAR PUSTAKA .................................................................................. 82
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