To set a maximum speed that we wish the machine to reach as the diameter of the part decreases, we use a G50 command as described below. This is generally a bad idea as at this speed the centrifugal force may course the chick to fail at securely holding the workpiece. The cutting speed is determined by the material, the cutting tool, the components shape and the chucking method.Īs the tool approaches the centerline of the part, the spindle speed will increase until it reaches the maximum spindle speed for the machine.

G96 calls the constant surface speed mode.

When G96 is selected, the spindle speed is automatically changed by the machine controls so that the speed of the material's surface stays constant when as the diameter changes during the machining operation.

This speed indicates the distance that the tool moves along the components surface per minute. If not you can try to call me, but I'm pretty tough to get right now with the SBE coming up.The G96 command is used when we require a constant surface speed or cutting speed. M05 will stop the spindle, as will M30 at the end of your code. 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. Just change the parameter, usually only press reset and then orient the spindle again and check the alignments with the tool changer arm. The S command will set the RPM, and M03 and M04 will turn the spindle clockwise and counterclockwise. How to adjust spindle orientation Basically its relatively simple. You can use F5 to turn the spindle on and off, or you can do it with G code. If your motor velocity matches the max pulley speed, and the ratio is 1, then your speed will match the RPM requested. Mach sees the requested speed is 25% of the max, and multiplies the motor velocity by that number.

Mach takes the requested speed, say 250rpm, and compares that to the max pulley speed. Mach is goofy about how it determines the speed. The thing I fought for years was making the speed right. If the motor turns the wrong direction, then change the Direction Low Active in the Motor Tuning section for the spindle axis. Mach is funny about when changes are taken in. After all this is done, don't try anything before you shut down Mach, save any fixture changes, and restart Mach. Mach3, Config, Ports and pins, Spindle Setup, Motor Control,ĥ.

Mach3, Config, Spindle Pulleys, Pulley1 through pulley4Ĥ. Step pin 8 (assuming you are using the 'A' driver on the G540)ĭir pin 9 (assuming you are using the 'A' driver on the G540)ģ. Mach3, Config, Ports and pins, Motor outputs, Spindle Ok, I'll go through it from top to bottom.ġ.

Mach 3 spindle orientation