The document discusses various attachments that can be used on milling machines to increase their versatility and efficiency. It describes vertical, universal, rack, high speed, gear cutting, and rotary table attachments. Each attachment enables additional milling capabilities like angular milling, milling in any plane, increased spindle speeds for small cutters, cutting gear teeth in straight lines or indexing gears.

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.