PRINCIPLES OF MACHINE TOOL DESIGN: General requirements of
machine tool design - design process machine tool layout general
requirements of machine tool design – design process machine tool layout
UNIT II:
MACHINE TOOL DRIVES AND MECHANISMS: Working and
auxiliary motion. Drives- Electric drives, Hydraulic transmission, Kinmatic
structure, Regulation of speed and feeds, stepped regulation, standardizationof speed and feed, stepless regulation of speeds and feeds
UNIT III:
CUTTING FORCE ANALYSIS AND POWER REQUIREMENT: In
Turning, Milling, Drilling, Shaping and Broaching operation with simple
problems. General requirements of machine tools - Centre lathe, Milling
machine.
UNIT IV:
DESIGN OF MACHINE TOOL STRUCTURES: Functions-
Requirements-Design criteria Material used – static and dynamic stiffness –
Profile and basic design procedure for machine tool structures. Design of
beds, columns, housing, bases, tables, cross-rails, arms saddle, carriages.
PART – B
UNIT V:
DESIGN OF GUIDE WAYS AND POWER SCREWS: Function and
types of guide ways – Design and lubrication of slide ways - aerostatic slide
ways - antifriction guide ways, combination guide ways - protecting devices,
design of power screws.
UNIT VI:
DESIGN OF SPINDLE AND SPINDLE BEARINGS: Functions-
Requirements and materials for spindle compliance and machining accuracy.
Design of spindles, antifriction bearing, Hydrodynamic and Hydrostatic
bearing, Air lubricated bearing.
UNIT VII:
DYNAMICS OF MACHINE TOOLS: Concept of dynamic cutting
process, Physical causes of chatter and vibrations, Types of Chatter. Stability
chart, chatter vibration in Lathe, Drilling machine, Grinding machine and
Milling machine. Different methods for avoiding machine tool chatter and
vibration.
UNIT VIII:
CONTROL SYSTEMS IN MACHINE TOOLS: Functions, requirements
and classification. Control system for speed and feeds centralized control pre
selective control, control system for forming and auxiliary motions –
Mechanical control– Ergonomic consideration and compatibility – Automatic
control system – Electric Hydraulic and pneumatic systems.
REFERENCE
TEXT BOOKS:
1. Machine Tool Dessign, N.K. Mehta Tata McGraw Hill 2001
2. Principles of Machine Tools, Sen and Bhattacharaya Oxford IBM
Publishing 2000
Reference Books
1. Machine Tool Design Volume – II and III, N. Acharkan MIR
Publications 2000
2. Design of Machine Tools, S. K. Basu and D. K. Pal 2000
3. Principles of Machine Tool Design, Koensberger 1993