In this
type tool position always start from zero . How to moves X ,Y and Z axis , it
measure distance from zero . Means tool position always taken from zero . If
work point anywere but its count from
zero position .For denoting absolute co-ordinate system we used preparatory code G90 used .We consider following example . In
following fig there is three place to perform work . it means tool moves at
three places . First we fixed corner of
job and take zero position shown by circle on corner. . Labeling to the work
position A ,B and C .Tool goes to perform work on first position A at
co-ordinate X10 and Y30 .After tool goes to second position B at co-ordinate
X30 and Y20 , its measure from zero work position . After tool goes to third
position C at co-ordinate X20 and Y10 ,
its measure from zero work position.
POINT X Y
A 10 30
B 20 30
C 20 10
In this type , for take tool positioning use
work zero at only once time .First giving the work position from work zero ,
after that tool position for co-ordinate take from previous position. For
denoting incremental co-ordinate system we used preparatory code G91 . Consider following fig . we have to calculate
co-ordinate in incremental co-ordinate system .In following fig there is three
place to perform work . it means tool moves at three places . First we fixed corner of job and take zero position
shown by circle on corner. Labeling to the work position A ,B and C .Tool goes
to perform work on first position A at co-ordinate X10 and Y 30 . Tool goes
second position B and its measure from previous position A, at co-ordinate X 20
and Y -10 . Tool goes third position C
and its measure from previous B , at
co-ordinate X-10 and Y-10 .
POINT X Y
A 10 30
B 20 -10
C -10 -10
ABSOLUTE CO-ORDINATE SYSTEM G90 II INCRIMENTAL CO-ORDINATE SYSTEM G91 II
Reviewed by harshal
on
February 17, 2018
Rating:
Reviewed by harshal
on
February 17, 2018
Rating:
