Okuma Alarm-A 1749 Tailstock quill command error
When the tailstock spindle advance/retraction (M55/M56) command is designated, the spindle and/or the M-tool spindle is not in the stopped state.
A tailstock retraction command was issued during spindle rotation.
When the spindle or the M-tool spindle rotation command is designated, the tailstock spindle is not at the *specified position.
* Specified position:
1)Tailstock spindle in-position position for center work
2)When performing center work, the pedal for holding tailstock spindle advance is not stepped on.
3)When performing chuck work, the tailstock is not located in the specified retract position.
Object
SYSTEM or none
Code
1->M55 or M56 command is designated while the spindle is not in the stopped state (zero rotation input ON, spindle rotation command (M03/M04) not active, spindle rotating signal not ON).
2->M55 or M56 command is designated while the machine is not set for the center work.
3->M55 or M56 command is designated while the M-tool spindle is not in the stopped state (zero rotation input ON, spindle rotation command (M13/M14) not active, spindle rotating signal not ON).
4->M-tool spindle rotation command is designated while the tailstock is not at the specified position.
5->The tailstock spindle offsets from the specified position while the M-tool spindle is rotating.
6->M code command is designated when the special work rest is at retract end.
7->An attempt was made to rotate the spindle with the tailstock spindle pressure input is off when the selector switch is at the neutral position.
8->The tailstock spindle advance command (M56) is designated with the touch setter specification machine when the touch setter arm is not at the retract end.
9->M56 is designated with the programmable tailstock connected.
13->When the tailstock chuck was clamped, a tailstock advance/retract command was issued.
14->When the tailstock chuck control switch was turned off or the chuck work was selected, a tailstock advance/retract command was issued.
15->When the signal for confirming disconnection of simple tow-along mechanism is OFF, a tailstock advance/retract command was issued.
18->When the tailstock spindle was not in sizing position nor retract end, a spindle rotation command was issued.
19->When the tailstock spindle was not in sizing position nor retract end, a tailstock chuck open/close command was issued.
20->A tailstock advance/retract command occurred when the chuck was not unclamped.
21->A tailstock advance/retract command occurred when workpiece stand is not upper limit position.
22->At the time of chuck unclamp, tailstock spindle was about to be advanced.
23->When tailstock was not in a tailstock spindle operation possibility place concerning tow-along tailstock, M55 M56 instructions were performed.
24->When tailstock did not clamp in the simple tow-along tailstock specification which has tailstock automatic clamp/unclamp mechanism, it did tailstock quill advance/retract command.
25->A tailstock advance/retract command (M56/M55) was issued with the tailstock within the tailstock motion disabled range or the boundary parameter set to ‘0’.
26->A tailstock advance/retract command was issued with the TAILSTOCK QUILL/#WORKPIECE PUSHER switch not set to TAILSTOCK QUILL.
27->A tailstock sleeve advance command was issued with the workpiece puller not at the retract end.
28->A tailstock quill advance command was issued with the deburring unit not at the retract end.
29->M56 command is designated while the spindle is not in the stopped state.
30->A tailstock quill advance command was issued with the workejector unit not at the retract end.
31->A tailstock sleeve retract command when workpiece stand was not upper position and chuck was opened.
32->A tailstock sleeve advance command when workpiece stand was not upper position and spindle in the state of orientstop and chuck was opened.
33->A tailstock advance/retract command was issued when workpiece pusher is not retract position.
34->A tailstock advance/retract command was issued when upper and lower turrets are not at the travel limit position in the positive direction.
35->A tailstock advance/retract command was issued when the lower turret index the steady rest position.
36->When a workpiece stand is not down limit position, a tailstock advance command is issued.
37->When a workpieace stand is not down limit position, a tailstock advance/retract command is issued.
38->When XB axis is not plus limit position or a workpiece stand is index position, a tailstock advance command is issued.
39->Tailstock moving command to work support position is issued, when tailstock is not advance or retract position.
40->A tailstock advance/retract command occurred when the tailstock sleeve was not unclamped.
41->A tailstock advance command was issued when work rest was not at the insertion position.
42->M529 command is designated while the machine is not set for the center work.
43->A tailstock advance command was issued when work rest was not at the removal position.
44->The tailstock manual command (pedal/button) specified when the tailstock was being advanced/retracted by M code
(M55/M56) or the tailstock manual advance command and manual retract command at the same time specified.
45->A tailstock advance/retract command(M55/M56/M847/M848)is issued when tailstock teaching mode is ON.
46->NC tailstock advance command (M56) is issued when the workpiece hold confirmation LS is ON.
47->A tailstock advance command was issued when steadyrest fully closed.
48->Tailstock advance command was issued when robot / loader is inside the machine.
49->On the machine with manual grind mode specification, tailstock advance/retract command were excuted, when manual grind mode was selected.
*For code 1, code 3, and code 8, interlock can be released by M157.
Probable Faulty Locations
1)Faulty zero speed input for the spindle and the M-tool spindle.
2)Program error
3)Operation error
Program Example:
N100 M03 S500
N101 M55
Operation Example:
Spindle rotation was attempted for chuck work with the tailstock in advance position.
Measures to Take
1)Make sure that there are no program or operation errors.
2)Check the input of the zero speed signal.
Related Specifications
Tailstock spindle advance/retraction command by M code