上海维宏电子科技股份有限公司
Weihong Electronic Technology Co., Ltd.
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value should be smaller. Set the value smaller at the beginning; make the machine tool perform
various typical movements for a period of time, and carefully observe it; when there is no abnormal
situation, increase the value gradually; otherwise, decrease the value and reserve 50% ~ 100%
insurance allowance.
Usually, given the drive ability of servo motor, frication of machine assembly, and endurance
capacity of mechanical components, limit the maximum speed of the three axes in actual using by
modifying the max. speed of each axis in the manufacturer parameters.
15) Set the parameter of auto lubrication (set a value smaller, such as once every 5 seconds). Observe
if auto lubrication is executed correctly. If so, set it according to the actual need.
In case of any problem in the running of the machine tool, check every part carefully according to
the steps above.
For a stepping motor system, usually, start-up speed should also be set. Generally, the value should be between
200 and 300.
4.2 Pulse Test
If you suspect there is pulse loss, you can confirm it by either of the following two methods.
4.2.1 Stepping Driver
Mark a little dot on the surface of a workpiece blank with a dagger; set this point as the workpiece
zero; lift up Z-axis; set the coordinate of Z-axis as 0; repeatedly move the machine tool, for example, run
a typical procedure with no tools (including synchronized movement of the three axes is much better),
and pause or stop during machining is permitted; and then back to the workpiece zero; descend Z-axis
slowly; observe whether the knifepoint matches with the marked dot.
4.2.2 Servo Driver
For a servo system, there is a more precise method: set servo driver mode as ― input pulse count
mode ― in the ―surveillance mode― (for example, the parameter of YASKAWA servo is UN00C ); regulate
it to display the lower 4 bits (with ―L ‖ before the count value ) in count value (hexadecimal system); set
workpiece zero and then write down the pulse count value at this time, then repeatedly run the
procedure with no tools on the machine tool, then back to the workpiece zero and see whether the pulse
count value at this time is the same with the original value.
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