02 PROSES BUBUT
Transcript of 02 PROSES BUBUT
![Page 1: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/1.jpg)
Aris Hendaryanto, ST.Program Diploma Teknik Mesin SV-UGM
![Page 2: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/2.jpg)
Contoh produk
![Page 3: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/3.jpg)
Prinsip gerakan pada waktu membubut
a. Gerak potong (cutting motion)b. Gerak makan (feed motion)c. Gerak penyetelan (adjusting motion)
![Page 4: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/4.jpg)
Macam proses pengerjaan:
![Page 5: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/5.jpg)
Macam proses pengerjaan:
Introduction to Lathe Operation by Smithy (courtesy of Youtube)
![Page 6: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/6.jpg)
Mesin bubut
![Page 7: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/7.jpg)
Long time ago………
![Page 8: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/8.jpg)
Bagian-bagian mesin bubut
![Page 9: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/9.jpg)
Speed gear box
![Page 10: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/10.jpg)
Carriage
a. Saddleb. Cross slide (eretan
lintang)c. Compound slide
(eretan kombinasi)d. Tool holder
(pemegang pahat)e. Apron box (kotak
apron)
![Page 11: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/11.jpg)
Apron
a. Feed shaftb. Worm shaftc. Worm geard. Engagement levere. Rack gear
![Page 12: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/12.jpg)
Tailstock
a. Spindleb. Sleevec. Handwheeld. Set screwe. Basef. Clamping pieceg. Clamping lever
![Page 13: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/13.jpg)
Metode pencekaman benda kerja
Three jaws chuck Independent four jaws chuck Chuck – center Between centers Face plate Collet Mandrell
![Page 14: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/14.jpg)
Three jaws chuck
![Page 15: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/15.jpg)
Independent four jaws chuck
![Page 16: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/16.jpg)
Chuck - center
![Page 17: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/17.jpg)
Between center
![Page 18: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/18.jpg)
Face plate
![Page 19: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/19.jpg)
Collet
![Page 20: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/20.jpg)
Mandrell
![Page 21: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/21.jpg)
Follower & steady rest
![Page 22: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/22.jpg)
Follower rest
![Page 23: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/23.jpg)
Steady rest
![Page 24: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/24.jpg)
Metode pencekaman benda kerja pada mesin bubut
Lathe Workholding by Smithy (courtesy of Youtube)
![Page 25: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/25.jpg)
Pahat (cutting tool)Proses pembentukan geram dengan
cara pemesinan berlangsung dengan cara mempertemukan dua jenis material.
Untuk menjamin keberlangsungan proses ini maka jelas diperlukan material pahat yang lebih unggul dari material benda kerja.
![Page 26: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/26.jpg)
Pahat (cutting tool)Keunggulan meliputi:KekerasanKeuletanKetahanan beban kejut termalSifat adhesi yang rendahDaya larut elemen/komponen material
yang rendah
![Page 27: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/27.jpg)
Jenis material pahat: Baja karbon tinggi (high carbon steels, carbon
tool steel) HSS (High Speed Steel) Paduan cor nonferro (cast nonferrous alloys,
cast carbides) Karbida (cemented carbides, hardmetals) Keramik (ceramics) CBN (Cubic Boron Nitrides) Intan (sintered diamonds & natural diamonds)
![Page 28: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/28.jpg)
Sejarah perkembangan material pahat
![Page 29: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/29.jpg)
Hot HardnessKekerasan
material pahat pada temperatur kerja yang tinggi
![Page 30: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/30.jpg)
Recovery HardnessKekerasan
material pahat pada temperatur ruang setelah pahat mengalami temperatur kerja yang tinggi selama beberapa saat
![Page 31: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/31.jpg)
Daerah kerja material pahat
![Page 32: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/32.jpg)
Macam-macam pahat bubut
![Page 33: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/33.jpg)
Macam-macampahat bubut
![Page 34: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/34.jpg)
Macam-macam pahat bubut
![Page 35: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/35.jpg)
Cutting Speed
![Page 36: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/36.jpg)
Cutting speed (kecepatan potong)
Cutting speed ditentukan dengan memperhatikan: Jenis material pahat Jenis material benda kerja Penampang geram/tatal/chip Penggunaan cairan pendingin (coolant)
![Page 37: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/37.jpg)
Tabel cutting speed
![Page 38: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/38.jpg)
Elemen dasar proses bubut
![Page 39: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/39.jpg)
Elemen dasar proses bubut
![Page 40: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/40.jpg)
Diagram kecepatan potong
![Page 41: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/41.jpg)
Diagram kecepatan potong
![Page 42: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/42.jpg)
Taper Turning
Proses membubut bentuk konus/taper dapat dilakukan dengan 3 cara:Menyetel sudut kemiringan top slide /
compound slide (eretan kombinasi).Menggeser tailstock.Menggunakan taper attachment.
![Page 43: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/43.jpg)
Taper turning with compound rest
![Page 44: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/44.jpg)
Offsetting tailstock center
![Page 45: 02 PROSES BUBUT](https://reader030.fdocuments.net/reader030/viewer/2022020105/553138b8550346465d8b4a20/html5/thumbnails/45.jpg)
Taper turning with taper attachment