My Profile
Active Members
TodayLast 7 Days
more...
Awards & Gifts
Online Exams
Fresher Jobs
Our fresher job section is exclusively for fresh graduates! Find jobs for freshers in major Indian
cities including Bangalore, Chennai, Hyderabad, Pune or Kochi
Resources
Find educational articles, blogs, discussion threads and other resources.
Colleges
Find details about any college in India or search for courses.
|
PR1251 MACHINE TOOLS AND CNC MACHINES
Posted Date: 26 May 2008 Resource Type: Articles/Knowledge Sharing Category: Syllabus
|
Posted By: J.Jerome Jernix Member Level: Silver
Rating:  Points: 1
|
|
|
PR1251 MACHINE TOOLS AND CNC MACHINES
1. INTRODUCTION TO MACHINE TOOLS
Classification of machining processes - Kinematic arrangement of different types of machine tools - Work holding and Tool holding devices of different types of machine tools.
2. MACHINE TOOL COMPONENTS AND DESIGN
Bed and Column – types-materials –design principles - Slide ways - types - materials –design principles - Antifriction ways – design calculations - Machine tool structures - design fundamentals-function and requirement of machine tool structure – various profiles of machine tool structure-static and dynamic stiffness- basic design procedure-materials for machine tool structures - Drive system - various types - Advantages and Disadvantages.
3. CONSTRUCTIONAL FEATURES OF CNC MACHINES
Different types of CNC machines - Constructional features: spindle and axes feed drives – slide ways – linear motion guide ways –ball screw – accessories. Feed back devices: encoders – resolvers – tachometers –Digital read outs- laser interferometer. Tooling for CNC: – classification of tooling systems –tool holders - Preset and qualified tools - work holding devices – Fixtures. Control systems - closed loop – open loop – point-to-point - contour – interpolators.
4. PART PROGRAMMING OF CNC MACHINES
Manual part programming – preparatory functions - miscellaneous functions - canned cycles – Absolute and Incremental programming – subroutines – examples of Manual part programming. Computer Aided part programming – APT programming –Generation of GM codes from CAD model – examples of APT programming.
5. RECENT ADVANCES
Computer numerical control –DNC – Combined DNC/CNC – Adaptive control of machining system Computer Aided Manufacturing – elements and functions - Computer Aided process planning: – planning function –process planning software – Methods of CAPP – variant – generative –examples of types of process planning systems - Internet based manufacturing.
TEXT BOOKS
1. N.K.Metha, “Machine Tool design and NC Machines”, 2nd Edition, Tata McGraw-Hill, 1996
2. Radhakrishnan P., “Computer Numerical Control Machines”, New Central Book Agency, 1996.
REFERENCES
1. Radhakrishnan P., Subramanian S., “CAD/CAM/CIM”, and Wiley Eastern, 1994.
2. Groover, “Automation, Production Systems and CIM”, Prentice Hall, 1990.
3. Yoram Koren, “Computer Control of Manufacturing System”, McGraw-Hill International Book Company, 1986
4. Yoram Koren & Joseph Ben - Uri, “Numerical Control of Machine tools”, Khanna Publishers, 1988.
5. G.R.Nagpal, Machine Tool Engineering, Khanna Publishers, 2000
|
Responses
|
| Author: Vidya 26 May 2008 | Member Level: Diamond Points : 2 | useful article
|
|
Watch TV Channels
|