Fagor 8025 GP, Руководство по эксплуатации

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8025/8030 CNC PROGRAMMING MANUAL 215
7.2. POLAR COORDINATES
Only movements in a plane (2 axes simultaneously) can be carried out when operating with
polar coordinates.
If 3D movements (in the space) are desired, they must be programmed in cartesian or
cylindrical coordinates.
The format to identify a particular point of the plane with polar coordinates is:
In mm R+/-4.3 A+/-3.3
In inches R+/-3.4 A+/-3.3
R being the radius value and A the value of the angle (A in degrees), referred to the polar
center.
When turning on and after M02,M30 ,EMERGENCY or RESET, the CNC takes the
point X0,Y0 as polar origin.
Every time there is a change of main plane during a program execution, the polar origin
assumes the point of the coordinate origin of that plane.
When G18 Is programmed, the polar origin assumes the point X0 Z0.
When G19 is programmed, the polar origin assumes the point Y0 Z0.
When a circular interpolation is programmed with G02,G03 the CNC takes the arc’s center
as the new polar origin.
With the function G93, any point of the plane can be preset as polar origin.
The values of R and A will be absolute or incrementaldepending on whether G90 or G91
are active.
When a circular interpolation (G02,G03) is programmed the values of the angle A+/-3.3
and the values of the center referred to the arc’s starting point must be entered.
Atention:
There is no need to write the I,J,K coordinates of the center referred to
the starting point, if the arc’s center is the polar origin point. Only the
angle must be programmed.