capstan lathe and turret lathe- comparison

capstan lathe and turret lathe- comparison

Sr. No.

Aspects

Capstan lathe

Turret lathe

1

Turret position

Turret      is      mounted directly on the saddle.

Turret is
mounted on an auxiliary slide, which moves on the guideways provided on

the
saddle.

2

Feeding of tools

For feeding the tools entire saddle
moved.

The saddle is
fixed at a convenient distance from
the work and the tools are fed by moving

the slide.

3

Extent of rigidity

Very
high rigidity because all the cutting forces
are transferred to the lathe load.

Because of the overhung of the slide
or ram, the tool support unit
is subjected to bending and deflection,

resulting
in vibrations.

4

Capability    to     handle

jobs

Can handle heavier jobs.

Can handle lighter jobs.

5

Maximum bar size that

can be handled

Upto 200 mm diameter.

Upto 60 mm diameter.

6

Tool travel

Almost full length of the

bed.

Limited tool travel.

7

Rate of tool feeding

Relatively slower.

Relatively faster.



8

Type of carriage

Reach over type or side hung type.

Usually equipped
with the reach over
type only since it is
employed for relatively smaller jobs and therefore, does not require a large swing

over bed.

9

Other provision

Heavier
designs are usually provided with pneumatic or hydraulic chucks to ensure a
firmer grip over heavy

jobs.

These  lathes   do   not have such
provisions.

Leave a Comment