USING THE COMPLEX LATHE Sumariyanto: 2007 FOLLOW THE INTERNATIONAL STANDARD

THE LEARNING PURPOSES Basic competence Follow the international standard Students are expected to: Identify the tools used based on the international standard

CHOOSING THE CUTTING TOOLS The purpose of choosing the cutting tools: Able to choose the cutting tools that suitable with the needs in complex lathe working

CHOOSING THE CUTTING TOOLS Cutting tool should have the following criteria: Hard and strong High temperature proof Toughness Stand on worn out

The geometric of an HSS chisel. HOW TO CHOOSE THE CUTTING TOOL The geometric of chisel must be matched with the pieces materials The kinds of chisel point: 1. Rake angle 2. Clearance angle 3. Cutting edge angle The geometric of an HSS chisel.

The geometric on sticking cutter www.greenleafcorporation.com Kalpakjian The geometric on sticking cutter

RIGHT-HAND TOOL AND LEFT-HAND TOOL The cutting edge of hand tool can be identified as followed: Right-hand tool Left-hand tool,

TOOL HOLDERS Tool hoolders purphose : To hold the HSS to avoid the trembles while lathing process

The sticking chisel (chisel holders). TOOL HOLDERS The sticking chisel (chisel holders).

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SHAPED CHISEL The function of Shaped Chisel : To form the object expected. a square chisel is for making cleft on silinder objects Radius Chisel

TRIAGLE TREAD CHISEL The function of threading machine : To make a treads, both single or doubled The treading machine hasa chip point, and has their own radius curvature shape.

SQUARE TREADING CHISEL A Square Threading Chisel

THE FUNCTION OF INSIDE CHISEL (BORING) To make a hole in the silinder

THE LATHING PLAN AND CALCULATION The purpose Able to plan and calculate the lathing process

THE LATHING PLAN AND CALCULATION The element of lathing can be calculated by using the formula below: working pieces : do = diameter before(mm) dm = last diameter (mm) lt = the cutting length (mm) Xr = The angles of lathe machine: a = The depth (mm) f = The movement (mm/turning) n = The main lead turning (Rotation / minute)

FORMULA d = average diameter pieces ( (do+dm)/2 ) (mm) Cutting speed d = average diameter pieces ( (do+dm)/2 ) (mm) n = Main lead turning(put/menit) Constanta = 3,14 Cutting time The earnings speeds A = a.f mm2 The feeding speed

REFERENCES DeGarmo: E.P. DeGarmo et al, Materials and Processes in Manufacturing, Wiley, 2003. Kalpakjian: http://www.nd.edu/~manufact/index3.htm Sumariyanto. 2007. Bubut Dasar. Malang: PPPPGT Malang Tim Fakultas Teknik Universitas Negeri Yogyakarta. 2004. Penggunaan dan Pemeliharaan Alat Ukur. Yogyakarta: Direktorat Pendidikan Menengah Kejuruan, Depdiknas.