Question

A workpiece of 2000 mm length and 300 mm width was machined by a planning operation with the feed set at 0.3 mm/stroke. If the machine tool executes 10 double strokes/min, the planning time for a single pass will be?

Answer 1

The planning time of the planner machine is 100 minute

Step-by-step explanation:

Planning machine

A planning machine is a metal working machine that gives a flat surface to the work piece. Here the work-piece reciprocates and the feed is given to the tool. A planning machine is used for heavy duty work and are often large in size.

The machining time or the planning time of a planning machine is given by,

`t_(m)` =
`(L_(w))/(N_(s)* f)`

where,
`L_(w)` is the total length of travel of job

= width of the job

= 300 mm

`N_(s)` is number of strokes per min

= 10 double strokes per min

f is feed of the tool, mm per stroke

= 0.3 mm per stroke

Therefore,
`t_(m)` =
`(L_(w))/(N_(s)* f)`

=
`(300)/(10* 0.3)`

= 100 min

Therefore the planning time is 100 minute.