Fagor 8025 T CNC, Operating Manual

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126 8025/8030 CNC PROGRAMMING MANUAL
b) Synchronized tool with the rotation speed of the spindle
A live tool is slaved and synchronized to the spindle encoder.
A synchronized tool is defined as being one formed by several blades, in a specific
relation. This tool is rotary and turns with respect to the speed of the spindle.
Its primary use is for making polygon shapes on the part, such as changing the part into
a cuadrangular prism, hexagon, octagon, etc.
EXAMPLES:
. TOOL WITH FOUR BLADES AND PART/TOOL
TURNING RATIO OF 1:2.
THE RESULTING POLYGON SHAPE IS AN
OCTAGON (8 SIDES).
. WITH A RATIO OF 1:1 THE RESULT IS A
SQUARE (4 SIDES).
. WITH A RATIO OF 2:3 THE RESULT IS A
HEXAGON (6 SIDES).
The formula for calculating the number of the resulting polygon is as follows:
number of sides = number of blades x K factor.
Another way to say it is to deal with a second spindle by means of which, and by
synchronizing the speeds of the heads, we can transfer the part from one spindle to the
other.
To take advantage of this feature, an encoder must be connected to the live tool.
Programming format: N4 M45 K+/-3.4
The +/- sign defines the direction of turn, with K+4, it will turn in one direction and with
K-4 will turn in the opposite direction.
The sync factor is determined by K and may be between K0 and K+/-655.3509 times the
spindle speed in one direction (+) or the other (-).
When K is a fraction, it is recommended to use parametric programming to gain accuracy.