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Four Key Points in the Operation of CNC Milling Machine

Four Key Points in the Operation of CNC Milling Machine

2022-07-01 10:33:16

Main operation process of CNC milling machine:

 

Return to reference point operation

 

Before the program runs, the machine tool must be returned to the reference point, that is, the tool rest returns to the reference point of the machine tool.

 

CNC MILLING MACHINE

 

Generally, the manual reference point return method is adopted when starting up, and the operation method is as follows:

 

1. Set the machine tool operation mode switch back to the zero manual mode position.

 

2. Use the fast multiplying switch to select the feed speed to return to the reference point.

 

3. Press the X and Ya move buttons on the operation panel of the machine tool. Press the selected coordinate axis and direction button to move the coordinate axis slowly. When it is released, the movement will stop and the x-axis and y-axis return to zero.

 

4. When the coordinate axis returns to the reference point, the tool rest returns to the reference point.

 

Manual operation

 

Use the switch, button, or hand wheel on the operation panel of the machine tool to move the tool manually, so that the tool can move along each coordinate axis.

 

1. Manual continuous feed the machine tool can be moved continuously by manual. The operation steps are as follows:

 

  • Place the mode selector switch in the jog position.

 

  • Select the moving axis, turn the coordinate axis selection key on the control panel to the corresponding coordinate axis, and the machine tool will move in the selected axis direction.

 

2. Place the rapid feed mode switch on the rapid feed, press the direction button, and the tool will feed rapidly in the selected direction.

 

3. Feed of hand-operated pulse generator moving the hand-operated pulse generator can make the machine tool feed slightly, and the steps are as follows:

 

Place the mode selection switch of the control panel at the position of the handwheel, select the manual magnification, turn the manual pulse generator, turn right to the positive direction, and turn left to the negative direction.

 

Automatic operation

 

1. Operation mode

 

Operation steps of memory

 

  • The program is stored in memory in advance.

 

  • Select the program to run.

 

  • Place the mode selector switch in the automatic position.

 

  • Press the cycle start button to start the automatic operation.

 

  • MDI operation: input the command of a program segment from the crt/mdi operation panel to execute the program segment

 

2. Automatic starting memory operation method

 

  • Select automatic mode.

 

  • Select a program.

 

  • Press the cycle start button on the machine tool operation panel.

 

  • Execute automatic operation if the automatic operation has been started, the operation of CNC.

 

  • Stop of automatic operation: input the stop command at the place where the program needs to stop in advance and press the button on the operation panel to stop it.

 

Protection of CNC milling machine

 

If the red indicator light is on, it means that the machine tool gives an error alarm and cannot operate normally. The machine tool replacement alarm generally includes a spindle alarm, controller alarm, and lubrication alarm.

 

1. When the error code is displayed on the CRT, please find out the reason. If the error code has the word "PS", it must be the error of the program or the set data. Please modify the program or the set data.

 

2. When the error code is not displayed on the CRT, it may be due to some fault operations performed by the machine tool. Please refer to the "maintenance manual".

 

3. If the machine tool encounters an emergency, press the emergency stop button immediately. At this time, the machine tool stops, and the spindle stops immediately. After troubleshooting, the emergency stop button is reset and the machine tool operates normally.

 

4. When the tool exceeds the travel range limited by the limit switch of the machine tool or enters the forbidden area specified by the parameters, the CRT displays the "over travel" alarm. To remove the emergency stop alarm, press the machine tool reset button on the front of the machine tool, move out of the limit area using the handwheel, and then press the reset button to remove the alarm.
 
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