With the rapid development of technology, more and more CNC equipment has entered our field of vision. CNC engraving machine, laser cutting machine, oscillating knife, etc. These machines are very intelligent and bring great convenience to our lives.

    We all know that good maintenance will prolong the service life of the machine. As for the maintenance methods of a machine, most people who own the machine know something. The simpler ones are regular cleaning of the machine and lubricating oil. Some maintenance methods are divided into seasons, and there are differences between summer and winter maintenance methods.

    If you want to know more, you can go to the previous article.

    Many people think maintenance is relatively simple, but the difficult thing is what to do if the machine fails. Most of the machine maintenance has steps, as long as you follow the steps, there is no problem. But if the machine breaks down, many people have no choice. After all, engraving machines, laser machines, oscillating knife, etc. are all large-scale machines with complex structures that cannot be started.

    For oscillating knife, we have summarized some common problems. These are minor problems that may occur with oscillating knife. If we encounter problems with the machine again, we can solve them according to the following methods. Of course, if we encounter a problem with the machine and then fail to find a solution, then we need to consult professional after-sales personnel and let them solve the problem for us.

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Let's take a look at the common problems.

1,Over cut、Miss cut

Failure phenomenon

1 Improperly installed tools

2 Tool offset center

3 Blade wear changes physical parameters

4 knife drop adjustment too deep

5 Poor suction, material moving during cutting

6 Material thickness parameters do not match the actual

7 Vibrating knife failure (mechanical failure)

8 speed is too fast

9 Servo driver gain adjustment is poor

 

Method of exclusion

1 Select the appropriate tool according to the tool guide, and adjust the extension value of lifting and falling.

2 The tool is in place, adjust the parameters of the tool center point

3 Inspect the tool and replace it with new tool if worn

4 Adjust the appropriate knife depth

5 Before cutting, check if the suction can firmly absorb the material.

6 Set the thickness parameters according to the actual thickness of the material

7 Check whether the cutter head of the vibrating tool holder is swinging? If there is swing, please contact the manufacturer for repair

8 reduce speed

9 Overshoot due to poor gain adjustment, please adjust the servo driver gain

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2,Machine cannot start up

Failure phenomenon

Machine power is off, main power is off Under-voltage, over-voltage, over-heat, trip switch trigger protection, etc.

1 The power supply is disconnected, the LCD screen has no display, and the power supply indicators of the motherboard, IO board, driver, etc. are not on.

2 Mains voltage is insufficient

3 The voltage exceeds the specified value

4 the coding line is disconnected (the drive has an error code)

5 photoelectric switch,

6 stroke switch trigger

7 Emergency switch triggered or disabled

Method of exclusion

Check the power switch, inter-circuit adapter, and other parts Power indicator

1 Use an electric pen or multimeter to measure whether there is power input, and check whether the power switch and connector are disconnected.If there is input power, the LCD screen is not displayed. Check whether the LCD screen connection lines, connector ports and power supply cables are loose or disconnected.Replace the LCD test and exclude.

2 Check the input power voltage, replace the power, etc.

3 Input the correct voltage and install a stabilized power supply device for the unstable power supply

4 Check if the drive has an error code, and check the connection of each coding line according to the drive error code table (refer to the corresponding drive code table to check the corresponding line to troubleshoot)

5 Check whether the photoelectric switch is blocked, the light position is shifted, failure, etc., reposition or replace the photoelectric switch to eliminate.

6 Check whether the X and Y axis travel switches are in the trigger state. You can try to push each axis away from the limit position and then turn it on again.

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3,Some materials cannot be cut

Failure phenomenon

1 corner position cutting continuously,

2 Insufficient cutting depth causes continuous cutting

3 Excessive speed leads to continuous cutting

4 The vibration cutter head is loose 

5 Severe blade wear

 

Method of exclusion

1 Adjust appropriately according to the thickness and flexibility of the material Angled knife.

2 Adjust the appropriate low point positioning according to the thickness and flexibility of the material

3 Adjust the appropriate cutting speed according to the thickness and flexibility of the material

4 Check whether the vibration knife handle is loose, causing the vibration knife head to loosen

5 Replace with new blade

 

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4,Moving process noisy or abnormal noise

Failure phenomenon

1 rails or bearings lack regular lubrication slip

2 Worn transmission bearings or loose screws somewhere

3 Transmission parts touch the housing 4 Coupling failure

 

Method of exclusion

1Inject lubricating oil, regularly clean and lubricate the guide rail

2 Replace the bearing or lubricating oil on the bearing; check if the fixing screw is loose.

3 The casing is squeezed by external force or the transmission part is loosened, re-tighten the transmission part and level the deformed casing.

4 Replace the coupling

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5,Cut wood   Material knife edge is not dry with burr

Failure phenomenon

1 Tool wear, not sharp

2 speed is too fast

3 Incorrect material selection for cutting

4 Inadequate adsorption

 

Method of exclusion

1 change tool

2 adjust speed

3 Select the right tool according to the material

4 Check if the air duct is leaking or falling off

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6,Frequently broken  blades

Failure phenomenon

1 The material selection for cutting does not match blade

2 The blade is not installed properly

3 For thicker materials, the height of the knife is too low

4 relatively hard and soft materials, adjust the appropriate cutting speed

5- knife cutting angle is incorrect

6 The knife cap pressure is adjusted too deep

7 Vibrating knife failure

 

Method of exclusion

1 choose the right blade

2 Check whether the blade is installed in place, and whether the fixing screws are properly fixed.

3 The higher the material, the corresponding adjustment of the set knife height

4 lower the cutting speed

5 Adjust the knife angle

6 readjust the knife cap pressure

7 Replace the vibration knife test

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7,Panel display failure

Failure phenomenon

1 Oversized

2 Press Start to always display the pause status

3 driver alarm detection

 

Method of exclusion

1 Set the appropriate positioning point, machine origin, and page zero.

2 Sensors on both sides of the beam remove obstacles

3 Detect the alarm of servo driver, and troubleshoot according to the fault code

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The above are the common problems of oscillating knife, I hope it will be helpful to everyone.

If you want to know more, welcome to our official website.