Spindle Orientation adjustments, and parameters

What is spindle orientation and how is it determined? Spindle orientation is when the spindle finds its home position just like a regular machine tool axis accept that its called orientation. Orientation is often needed to align the tools up properly in order to perform a tool change. Orientation could miss position for a number of reasons. Crash, sensor, axis misalignment causing a crash are the most common. Orientation is usually set with either parameters or a pot on the circuit board or drive. Remember axis alignment at tool change position must be correct before adjusting orientation alignment. Orientation is often set parallel with an axis. Make sure you check the tool changer arm alignment slowly rotating through before running a tool change at full speed.

How to adjust spindle orientation? Basically its relatively simple. Just change the parameter, usually only press reset and then orient the spindle again and check the alignments with the tool changer arm. Move the tool changer arm manually by either turning the fan on the back of the motor or sometimes there is an allen wrench or wrench flat. Depending on the machine and if it is a servo motor driven then it sometimes can be rotated by the hand wheel.

Spindle orientation parameters
Fanuc
0i/16i/18i/21i/ 160i / 180i /210i	Usually 4077 sometimes 4031	Parameter 4031 is used to set spindle orientation when an externally set stop postion is used. Usually based on type of sensor used to sense orientation position. Reference parameter 3702 bit 0 for whether machine is set to use 4031 instead of 4077. Thank you Arthur Altham for your contribution
16/18	4077
15	3077
10	Pot RV11 on Board
OM	6577	Thank you Silvano for your contribution
Mitsubishi
meldas 65	3207
Yasnac
I-80	1414
2000G
Allen bradley
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Seimens controls
810D	SPOS(spindle position) 43210,To access=Menu-Setting data-miscellineous setting -axis specification (select spindle axis in axis specification)- search the parameter or SPOS(also search from nominee)	Thank you Sushil Bondre for your contribution
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