Basic Brief explanation on Milling Attachment

1. Shri S’ad Vidhya Mandal Institute Of
Technology
Presented by
Samarth Sojitra 150450119161

2. Milling Machine Attachments:-
 Milling machine attachments are used it add versatility of the machine, high work
capability and to increase the efficiency of the machine.
A standard attachments used on milling machine are as follows:-
a) Vertical milling attachment
b) Universal milling. attachment
c) Rack milling attachment
d) Rotary table
e) High speed milling attachment
f) Gear cutting milling attachment

3. Vertical milling attachment :-
 This attachment is used to cenvert a horizontal milling machine.
 It can be mounted on the face of the column of a knee for a column type milling machine.
 For angular milling, the spindle head can be swivelled to any desired angle.
 Generally, the speed of a vertical spindle is same as that of horizontal spindle.
Universal milling attachment:-
 It is used on a horizontal milling machine to perform milling operations in any plane.
 It is similar to the vertical attachment with added arrangement for swivelling the spindle
about two mutually perpendicular axis.
High speed milling attachment:-
 It is mounted on horizontal Milling machine to use a small diameter milling cutter for
milling keyways, splines, slots, etc.
 By using internal arrangement of gears, the speed or rotation is increased which makes
possible a productive increase in feed.

4. Rack milling attachment :-
 It can be mounted on either plain or universal horizontal milling machine.
 It is used to cut teeth (gear teeth) along a straight line.
 It consists of a milling unit, a fixture and a rack indexing unit.
Gear tuning attachment :-
 It is used to space and cut teeth quickly and accurately on spur gear.
 In addition to spur gear, the teeth for helical and worm gears can also be cut.
 It is indexed in the same manner as that of universal dividing head.
Rotary table :-
 Rotary table or circular milling attachment is bolted to the top of the table or a plain or
universal milling machine.
 It is graduated in half degrees on its circumference it is used to machine a large variety of
shapes like circular T-slots, different type of cams, etc.