TOMATECH AUTOMATION
X: X absolute coordinate (unit: mm) of thread end point;
U: Different value (unit: mm) of X absolute coordinate between thread end point and
starting point;
Z: Z absolute coordinate (unit: mm) of thread end point;
W: Different value (unit: mm) of Z absolute coordinate between thread end point and
starting point;
P(m): Times of thread finishing: 00～99 (unit: times). It is valid after m specified value is
executed, and the system parameter №057 value is rewritten to m. The value of system
parameter №057 is regarded as finishing times when m is not input. In thread finishing,
every feed cutting amount is equal to the cutting amount d in thread finishing dividing the
finishing times m;
P(r): Width of thread run-out 00～99(unit: 0.1×L,L is the thread pitch). It is valid after r
specified value is executed and the system parameter №019 value is rewritten to r. The
value of system parameter
№019 is the width of thread run-out when r is not input. The thread run-out function can be
applied to
thread machining without tool retraction groove and the width of thread run-out defined by
system
parameter №019 is valid for G92, G76;
P(a): Angles at taper of neighboring two tooth，range: 00～99，unit：deg(°). It is valid after
a specified
value is executed and the system parameter №058 value is rewritten to a. The system
parameter
№058 value is regarded as angle of thread tooth. The actual angle of thread in defined by
tool ones
and so a should be the same as the tool angle;
△Q(△dmin): Minimum cutting travel of thread roughing, range: 0 ～ 999999( IS-C)/ 0 ～
99999( IS-B),(unit: least input increment, radius value). When ( n − n −1 ) ×△d＜△dmin,
△dmin
is regarded as the cutting travel of current roughing, i.e. depth of current thread cutting is
( n −1 ×△d+△dmin) . Setting △dmin is to avoid the too small of roughing amount and
too many
roughing times caused by the cutting amount deceleration in thread roughing. After Q(△
dmin) is
executed, the specified value △dmin is valid and the system data parameter NO. 059
value is
rewritten to △dmin (unit: 0.001). when Q(△dmin) is not input, the system data parameter
NO.059
value is taken as the least cutting amount;
R(d): It is the cutting amount in thread finishing, range: 00～99.999 (unit: mm/inch, radius
value
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