1 Nptel is a joint initiative from IITs and IISc to offer online courses & certification. milling spur gears of 48 teeths using simple indexing over cast iron using vertical milling machine.

Milling machine is the backbone of the manufacturing industries. The centre distances are set in a cartesian co-ordinate system. are some of the examples of this class. One of the important indexing operations to be performed on Milling Machine is the helical or spiral milling.

Almost it is capable of doing any milling operation whether it is gear milling, thread milling, angular milling etc. NPTEL began offering open online courses in March 2014 along with certificates from the IITs/IISc for those who completed the courses successfully. In this article you will able to learn about what is milling machine operation, parts and types. Manufacturing Technology Milling Introduction Milling is the process of machining flat, curved, or irregular surfaces by feeding the work piece against a rotating cutter containing a number of cutting edges. Helps in changing the angular position of the of the component in relation to the cutter One of the more important attachments for milling machine Used to divide circumference of workpiece into equally spaced divisions when milling gear teeth, squares, hexagons, and octagons Also used to rotate workpiece at predetermined ratio to table feed rate

Drill Fluting or Helical Milling. It is the most commonly used milling machine used for general shop work. Milling by end mills shank and milling cutters is possible.

Jul-Dec 2020 Course Booklet. The jigs and fixtures are the economical ways to produce a component in mass. •CNC Machining is a process used in the manufacturing sector that involves the use of computers to control machine tools like lathes, mills and grinders. shows a simple column and knee type milling machine. Marking and . CNC : Computerised Numerical Control (Computer + Numerical Control) •Numerical control is a programmable automation in which process is controlled by Numbers, Letters, and symbols. Indexing in database systems is similar to what we see in books. MANUFACTURING TECHNOLOGY UNIT – V Machine Tools 2. Indexing (Dividing) Head. Quality of the performance of a process largely influenced by the quality of jigs and fixtures used for Indexing (Dividing) Head• Once one of the more important attachments for milling machine• Used to divide circumference of workpiece into equally spaced divisions when milling gear teeth, squares, hexagons, and octagons• Also used to rotate workpiece at predetermined ratio to table feed rate 2

Generation of flutes in twist drill, milling of helical and spiral gears, milling of worms and helical cutters, etc.