Introduction to Basic Manufacturing Processes and ... - always yours

444 Introduction to Basic Manufacturing Processes and Workshop Technology
23.12 TYPES OF PLANERS
Planers may be classified in a number of ways, but according to general construction,
these are the following types:
1. Double housing planer
2. Open side planer
3. Pit planer
4. Edge or plate type planer
5. Divided table planer
23.13 SLOTTER
The slotter or slotting machine is also a reciprocating type of machine tool similar to a
shaper or a planer. It may be considered as a vertical shaper. The chief difference between
a shaper and a slotter is the direction of the cutting action. The machine operates in a
manner similar to the shaper, however, the tool moves vertically rather than in a horizontal
direction. The job is held stationary. The slotter has a vertical ram and a hand or power
operated rotary table.
23.14 PRINCIPLE PARTS OF A SLOTTER
Fig. 23.16 shows a slotter and its various parts. The main parts of a slotter are discussed
as under:
Bed or Base
It is made up of cast iron. It supports column, tables, ram, driving mechanism etc. The
top of the bed carries horizontal ways along which the worktable can traverse.
Table
It holds the work piece and is adjustable in longitudinal and cross-wise directions. The
table can be rotated about its centre.
Hand wheels
They are provided for rotating the table and for longitudinal and cross traverse.
Column is the vertical member
They are made up of cast iron and it houses the driving mechanism. The vertical front face
of the column is accurately finished for providing ways along which the ram moves up and down.
Ram
It is provided to reciprocate vertically up and down. At its bottom, it carries the cutting
tool. It is similar to the ram of a shaper; but it is more massive and moves vertically, at right
angle to the worktable, instead of having the horizontal motion of a shaper:
Cross-slide
It can be moved parallel to the face of the column. The circular work-table is mounted
on the top of the cross-slide.