Fagor 8025 T CNC, Руководство по эксплуатации

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90 8025/8030 CNC PROGRAMMING MANUAL
ADVANTAGES OF THE FAGOR METHOD
Less time is needed for the digitizing stage.
It can be used in large machines, even though the axis which moves the probe is very heavy,
as it is not submitted to continuous rocking movements which could damage its mecha-
nism.
After the data has been collected a program is generated which can be stored in the memory
of the TS 8025/30 CNC or in the disc of a computer, by using the FAGORDNC
communication system. This second option is the one used normally, as the programs
which are generated by digitizing are usually of a large size than the memory capacity of
the control (32 Kb).
If the pattern has any type of symmetry, only one part can be digitized and then, by
applying mirror images , (G12, G13), transfers (G92, G53 .... G59) and axis turns (G73),
the complete pattern can be reproduced. This allows a reduction both in the digitizing time
and the length of the program.
Reproduction can be obtained with smoothed paths if, instead of going from one point to
another in a straight line (G1), G8 functions are used (Tangent circumference to the
previous path) and G9 (circumference defined by three points).
Also, zero offsets can be applied using G53...G59 type functions.
The application of scale factors (G72) allows a complete family of parts to be made from
a single pattern.
All these functions, the coordinates of the points, as well as machining conditions (feed
rate, tool to be used, spindle revolutions, etc.), can be entered automatically during the
digitizing stage by means of the G76 function, for which reason it is not necessary to edit
the program which is generated afterwards.
Should it be necessary to make modifications the control reserves 100 blocks before the
first block (N100) generated by the digitizing process.
The program can occupy up to several Mb of memory. During the machining stage, it is
necessary to transmit it as an infinite program using FAGORDNC. DNC software
guarantees safe transmission of data by means of an RS 232C lines. For this reason, it has
a communications protocol which automatically retransmits the data should there be an
error in transmission or reception.
Finally, it is also possible to send the program generated from digitizing to a CAD/CAM
system capable of reconstructing the geometry of the pattern. Once there, the original
design could be modified and the process is completed by machining the definitive design.