Tuesday, September 22, 2015

M41-M42 Force Gear speed



             These M-codes are used rarely in NC programming for Milling and Used more in turning, any ways it’s good to know about the functions.
While working in CNC Machines We may have to select the Speed 100 to 1000rpms, whenever we work on the bigger diameters we may have to decrease the Speed and When We Work on the smaller diameters we may have to increase the speed, Increasing and Decreasing the speed can be done by changing the Gears on CNC machine.  Miscellaneous code called M-code control the machine controls.
M code 41, i.e., 
M41 is activated to select the Low gear to Decrease the speed.
M42 is activated to select the high gear to increase the speed;

These M-codes also used in Milling machines like Mandeli 5- axis machines.

Vericut Simulation takes more time while simulating M42???

In Vericut Simulation software When M42 code runs, the simulation take long time to finish the cycle.
You can follow the below step to overcome this slow Simulation problem in Vericut.
M42: Force High Gear.
1) Click on Collision
2) Uncheck visible stock and active tools’ Holders.
This makes the simulation faster and you can check this after finishing M42 Operation.



5 comments:

  1. Do you know what do these codes do hardware-wise? For example, code S500 while maximum spindle speed is 1000 rpm would output a 5 V signal (assuming a 10 V DAC) through the controller's analog port. My problem is that I have a CNC controller whose manual doesn't discuss these details even though it states that M41 and M42 functions are available, and I want to know what other controllers typically do so that I have a better idea of what to expect. I was assuming that the controller should output a digital signal of some sort (using several digital output pins) but since I can't see any changes in the controller's digital output I start to think that my assumption is incorrect.

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