Complete description of lathe bed design

1. MACHINE TOOL TECHNOLOGY
MANISH KUMAR VERMA
ASSISTANT PROFESSOR
DR. C V RAMAN UNIVERSITY , KARGI ROAD KOTA ,BILASPUR
(C.G)

2. Design of lathe bed

3. Basic features of machine tools
 Bed, structure of frame
 Slides and slide ways
 Spindle and spindle bearing
 Power units
 Transmission linkage
 Work holding and tool holding elements

5. Material and construction features
 Beds bases column and frames of machine tools are generally
made from Cast Iron because of following advantages possessed
by Cast Iron:
 High compressive strength .
 Easily cast into intricate shape.
 Better capacity to absorb vibrations
 Possess good lubricating properties due to the presence of free
graphite in it.
 Can be machined to fairly high degree of accuracy and
provide a fine surface finish.
 Can be easily allowed with elements like Nickel, Chromium,
molybdenum etc. to increase its hardness.
 Cost is fairly low.

6. Various Bed sections
 Lathe beds of ordinary design consisting
of two girders laid, side by side connected
at intervals by cross beam as shown in
figure
 Saddle rest on outer part of the flat slide
ways.
 Tailstock rest on inner side of slide ways.

7. Various Bed sections
 Figure shows lathe bed cross
section of American type
 Saddle rest on 1-1
 Tailstock rest on 2-2
 Such provision of two separate
slide ways would prevent wear of
tailstock slides and also helps to
prevent coaxially of center.

8. Design of lathe beds