Okuma Alarm-A 1367 NC tailstock position error
Out advance of the NC tailstock.
Concerning Sub spindle-tailstock Control specification, out advance of the NC tailstock.
1->When the command position(CON)does not reach the command torque before entering the sizing position area1,the command torque is generated within the tailstock quill expand/shrink Time.
2->The torque higher than the set thrust is generated when the current position(APA) is moved to the +side viewed from the sizing position area2.
3->The toraue exceeding the threshold is generated when the tailstock moves or the time constant(T1+T2)* 1.25+48 msec from the approach position or movement start position.
4->The current position is not within the sizing position area while the tailstock is in sizing position status.
5->The torque higher than the set thrust is generated after lower.
6->The torrue over for the ball screw Inertia.
7->Real thrust is outside the tolerance of the instruction thrust.
8->Difference between sizing position and current position values has exceeded the allowable limit.
9->When the tailstock wasn’t in A position, the sizing command in position B was ordered.
10->The motor torque came off from the threshold by ‘work position state’.
Probable Faulty Locations
A workpiece shorter than the required one is mounted.
Measures to Take
Re-positon the tailstock closer to the workpiece.