PR8602 - METAL CUTTING AND CNC MACHINES (Syllabus) 2017-regulation Anna University

PR8602 - METAL CUTTING AND CNC MACHINES (Syllabus) 2017-regulation Anna University

PR8602

METAL CUTTING AND CNC MACHINES

 LPTC
3003

OBJECTIVES:
• To understand the theory of metal cutting
• To understand the concepts of gear manufacture
• To understand CNC machines constructional features, working and programming

UNIT I

MECHANICS OF METAL CUTTING

10
Tool nomenclature – single point and multi point cutting tools – orthogonal & oblique cutting – cutting forces, Merchant circle diagram – force & velocity relationship.

UNIT II

TOOL MATERIAL, TOOL WEAR AND TOOL LIFE

9
Requisites of tool materials – types of tool materials – Tool wear – Types, mechanism – Tool life - Machinability - types of chips – cutting fluids.


UNIT III

GEAR MANUFACTURE

8
Different methods of gear manufacture – Gear hobbling and gear shapi ng machines specifications – gear generation – different methods – gear finishing and shaving – grinding and lapping of hobs and shaping cutters – gear honing – gear broaching.

UNIT IV

CNC MACHINES

9
NC, CNC & DNC – types of CNC – constructional features – drives and control systems – feed back devices – Interchangeable tooling system – preset & qualified tools – ISO specification – Machining center – Turning center – CNC wire cut EDM.

UNIT V

CNC PROGRAMMING

9
Manual part programming – steps involved – sample program in lathe & milling. - Computer aided part programming – APT - CAM package – canned cycles - Programming.

TOTAL : 45 PERIODS

OUTCOMES: Upon completion of this course, students will be able
• To apply the principles of metal cutting and mechanics in machining process.
• To select tool materials based on requirement.
• To understood the concepts of various gear manufacturing methods.
• To acquire knowledge on modern material removal process like EDM.
• To perform CNC and APT program for turning and machining centre.

TEXT BOOKS:
1. Nagpal G.R., "Machine Tool Engineering", Khanna Publishers, 2002
2. Groover.M.P., "Automatiion, production systems and computer integrated manufacturing", Prentice Hall , 2008

REFERENCES:
1. GE Thyer, "Computer Numerical Control of Machine Tools", BH. Newners, 1991
2. Hajra Choudhury C.J., “Elements of Workshop Technology”, Vol.I and Vol.II, Asia Publishing House, 2010.
3. Jonathan Lin.S.C., "Computer Numerical Control from Programming to Networking", Delmar Publishers, 1994
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