[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"ssr-repo-dspace000001567":3,"ssr-repo-divisions":75,"menu-footer-id":261,"menu-main-id":322},{"id":4,"title":5,"authors":6,"files":8,"advisors":35,"authors_detail":36,"advisors_detail":40,"publisher":41,"publish_place":42,"language":43,"type":44,"type_slug":45,"year":46,"department":47,"study_program":48,"keywords":49,"keywords_detail":57,"abstract":72,"abstract_html":73,"url":74},"repo-dspace000001567","Rekondisi Mesin Bubut Celtic BU 12",[7],"Rizqi Agus Rusdani",[9,13,16,19,23,26,29,32],{"chapter":10,"requires_login":11,"label":12,"available":11},"abstrak",false,"Abstrak",{"chapter":14,"requires_login":11,"label":15,"available":11},"bab1","Bab I",{"chapter":17,"requires_login":11,"label":18,"available":11},"bab2","Bab II",{"chapter":20,"requires_login":21,"label":22,"available":11},"bab3",true,"Bab III",{"chapter":24,"requires_login":21,"label":25,"available":11},"bab4","Bab IV",{"chapter":27,"requires_login":21,"label":28,"available":11},"bab5","Bab V",{"chapter":30,"requires_login":21,"label":31,"available":11},"full","Dokumen Lengkap",{"chapter":33,"requires_login":11,"label":34,"available":21},"open","Akses Terbuka",[],[37],{"name":7,"nim":38,"slug":39},"2231210022","rizqi-agus-rusdani",[],"Politeknik Negeri Malang","Malang","Indonesia","Tugas Akhir (D3)","tugas-akhir-d3",2025,"D-III TEKNIK MESIN",null,[50,51,52,53,54,55,56],"Mesin Bubut Celtic BU 12","ISO 1708","Kapabilitas Proses","Cp","Cpk","Kerusakan Gear","Pemeliharaan Mesin",[58,60,62,64,66,68,70],{"name":50,"slug":59},"mesin-bubut-celtic-bu-12",{"name":51,"slug":61},"iso-1708",{"name":52,"slug":63},"kapabilitas-proses",{"name":53,"slug":65},"cp",{"name":54,"slug":67},"cpk",{"name":55,"slug":69},"kerusakan-gear",{"name":56,"slug":71},"pemeliharaan-mesin","Mesin bubut Celtic BU 12 merupakan peralatan penting untuk produksi komponen presisi. Penelitian ini bertujuan menyusun metode inspeksi sesuai ISO 1708, menilai kestabilan dan kapabilitas proses pembubutan melalui peta kendali dan indeks Cp serta Cpk sebelum dan sesudah rekondisi, serta mengidentifikasi penyebab utama kegagalan mekanisme feed otomatis. Metode yang digunakan meliputi pengujian geometrik ISO 1708 menggunakan level presisi, dial indicator, test mandrel, dan taut wire, uji potong dengan pengukuran diameter, serta analisis peta kendali individu dan indeks kapabilitas. Hasil menunjukkan sebagian parameter geometrik memenuhi toleransi, namun ditemukan ketidaksesuaian pada run-out centring sleeve headstock 0.0100 mm terhadap 0.007 mm, paralelisme spindle horizontal 0.0114 mm terhadap 0.01 mm, paralelisme luar sleeve tailstock 0.0268 mm terhadap 0.01 mm dan 0.0268 mm terhadap 0.015 mm, paralelisme bore dalam sleeve tailstock 0.0243 mm terhadap 0.02 mm, serta selisih tinggi senter 0.0256 mm terhadap 0.02 mm. Sebelum perbaikan, proses belum terkendali secara statistik dengan batas kendali UCL X̅= 0.32 mm; LCL X̅= -0.07 mm; spesifikasi UCL R = 0.34 mm; LSL R = 0 mm) dengan Cp = 0.36 dan Cpk = 0.08. Setelah penggantian clutch, perbaikan gear, dan lead screw, proses menjadi stabil dengan UCL X̅= 0.11 mm; LCL X̅= -0.03 mm; spesifikasi UCL R = 0.12 mm; LSL R = 0 mm) dengan Cp = 1.02 dan Cpk = 0.63, sedangkan kapabilitas praperbaikan representatif karena proses stabil. Akar masalah feed otomatis diidentifikasisebagai keausan gigi akibat pelumasan kurang optimal dan beban berlebih, dengan estimasi biaya pemulihan Rp4.600.000. Rekondisi terbukti meningkatkan keandalan, menurunkan risiko produk di luar toleransi, dan mendukung konsistensi kualitas.","\u003Cp>Mesin bubut Celtic BU 12 merupakan peralatan penting untuk produksi komponen presisi. Penelitian ini bertujuan menyusun metode inspeksi sesuai ISO 1708, menilai kestabilan dan kapabilitas proses pembubutan melalui peta kendali dan indeks Cp serta Cpk sebelum dan sesudah rekondisi, serta mengidentifikasi penyebab utama kegagalan mekanisme feed otomatis. Metode yang digunakan meliputi pengujian geometrik ISO 1708 menggunakan level presisi, dial indicator, test mandrel, dan taut wire, uji potong dengan pengukuran diameter, serta analisis peta kendali individu dan indeks kapabilitas. Hasil menunjukkan sebagian parameter geometrik memenuhi toleransi, namun ditemukan ketidaksesuaian pada run-out centring sleeve headstock 0.0100 mm terhadap 0.007 mm, paralelisme spindle horizontal 0.0114 mm terhadap 0.01 mm, paralelisme luar sleeve tailstock 0.0268 mm terhadap 0.01 mm dan 0.0268 mm terhadap 0.015 mm, paralelisme bore dalam sleeve tailstock 0.0243 mm terhadap 0.02 mm, serta selisih tinggi senter 0.0256 mm terhadap 0.02 mm. Sebelum perbaikan, proses belum terkendali secara statistik dengan batas kendali UCL X̅= 0.32 mm; LCL X̅= -0.07 mm; spesifikasi UCL R = 0.34 mm; LSL R = 0 mm) dengan Cp = 0.36 dan Cpk = 0.08. Setelah penggantian clutch, perbaikan gear, dan lead screw, proses menjadi stabil dengan UCL X̅= 0.11 mm; LCL X̅= -0.03 mm; spesifikasi UCL R = 0.12 mm; LSL R = 0 mm) dengan Cp = 1.02 dan Cpk = 0.63, sedangkan kapabilitas praperbaikan representatif karena proses stabil. Akar masalah feed otomatis diidentifikasisebagai keausan gigi akibat pelumasan kurang optimal dan beban berlebih, dengan estimasi biaya pemulihan Rp4.600.000. 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