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Laser cutting machine common faults and solutions

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Laser cutting machine often fails during use. Without the guidance of professional staff, it is difficult to accurately judge the source of the laser cutting equipment. It can only be explored based on its own experience, but some faults will appear for the first time. We will be a little helpless. Even after consulting the factory, there is no way to describe it clearly. The Han's super-energy laser has carefully selected some laser cutting machine faults and corresponding fault sources or solutions.
 
1 Is the cutting effect not good or not worn?
 
The power setting is too small, the potentiometer is small, the light is polarized, the lens is dirty, the focusing lens is reversed, the focal length, the laser power supply, the laser tube power attenuation, the water temperature is too high, the voltage is unstable, etc., according to the actual situation, it is as simple as possible.
 
2 Can't connect to the device?
 
Whether to install the board driver, whether the USB cable or network cable is plugged in, the USB cable or network cable is bad, the adapter board is bad, the board is, etc.
 
3 Turn back to the original point and move in the opposite direction?
 
Origin switch is broken
 
4 Cutting pattern deformation and cutting overlap?
 
Synchronous wheel screw loose, motor line broken, motor broken, driver, voltage, etc.
 
5 The device can't be started and the boot room is tripped when it is open.
 
Whether the emergency stop is bounced, whether the external circuit is connected, whether the internal opening of the device is closed, whether it is turned on or not, please check the main contactor and the control transformer, etc.; the water protection leakage causes the laser power supply to short-circuit into the water ( For example, the JGHY12570 water protection position is installed on the side, it is just the laser power supply underneath, the 107 water pump is short-circuited, the indoor air is used too small, etc.
 
6 High-voltage line fire?
 
This problem is really a headache. I suggest putting a high-voltage insulating sleeve on the outside of the high-voltage line.
 
7 Is the graphic size too large or too small?
 
Whether the output graphic size is the same, the Z-axis height position changes, the correction file, etc.
 
8 The color of the image that is printed is different from the surrounding color?
 
Adjust the focus factor, adjust the W-axis focus, etc.
 
9 Is there a bad phenomenon and a thick spot in the marking process?
 
Dynamic, DA board, etc.
 
10 Marking graphic position offset?
 
The X-axis or Y-axis position of the vibration lens is offset, and the center point is found. The XY axis position is adjusted according to the actual offset direction.
 
11 Start-up vibration lens XY axis chaos and dynamic motor abnormal noise swing?
 
Replace ±12±15V switching power supply; replace ±12±28V switching power supply
 
12 No light?
 
Whether the chiller return water is normal, whether the W-axis position changes, whether the DC48V32A laser power supply is normal, laser tube, etc.
 
13 The boot display panel has no display?
 
5V12V24V switching power supply is normal, display panel, etc.
 
14 Does the UPS return to the original display panel fail?
 
Replace offline card
 
15 Z axis does not feed or exercise is weak?
 
Z-axis feed motor problem, drive problem, bearing, foreign matter stuck, etc.
 
16 Glass tube does not emit light?
 
The light control of the glass tube mainly includes a laser tube, a laser power source, a water circulation system and an light output signal, and the light output signal includes a PWM light output signal given by the board, a water protection signal, a door switch signal, and the like. Therefore, the laser tube does not emit light mainly from the laser tube laser power water circulation system and the light output signal. Generally, firstly, whether the laser power supply is normally energized, whether the outer tube of the laser tube is abnormal, whether the water circulation system is normal, if not normal Make the appropriate replacement or adjustment. In the normal situation of the above aspects, the optical signal problem should be considered. Generally, the short-circuit signal (short-circuit laser power supply current 5v and AIN short-circuit water protection P and GND with lock-free switch control L and GND) is used. Test laser tubes and laser power supplies. If this method can emit light normally, it means that the laser tube laser power supply has no fault, and it is a signal problem of water protection switch, relay, door switch, board pwm signal, etc., and can be eliminated in order. If this method does not emit light, it is a problem of laser tube or laser power supply, and it can be solved by the replacement method in case of bad judgment.
 
17 RF laser tube does not emit light?
 
In the case that the waterway unobstructed laser power supply is normally started, it is first tested whether the laser power supply DC 48v is normal; the conduction of the 4 pin and the 13 pin of the 25-pin plug of the laser tube can be turned on to indicate that the water protection signal is normal, and the water protection cannot be turned on; The voltage conditions of the 7-pin and 20-pin are not pre-adjusted or the DC voltage is about 4 to 5V at the beginning, and the normal signal (low-level conduction) is pre-adjusted or started at around 1 to 3v. If the water, power supply and these two signals are normal, it can be judged that the laser tube is faulty. If the signal is not normal, it indicates a board problem or a circuit problem.
 
18 After the replacement of the RF laser tube, the laser tube connection error is displayed?
 
In the connector (internal line is not desoldered short circuit), the power line (left and right negative and negative poles are connected with the ground wire), the water connection is normal. After restarting the chiller and the device, the 25-pin connector is generally not connected. The problem of connecting the board is broken or not compatible, such as the encrypted tube and the non-encrypted tube, the board is not compatible
 
19 The cutting machine is misplaced?
 
(Cut heavy or collinear graphics cut too far) "
 
1.) Feeding cutting misalignment First, the step distance of the feeding shaft = measured length * original step / real length (set feeding length) 2 is to check the timing belt of the feeding shaft with the locking wheel and the motor timing belt locking wheel Whether it is loose or not, there is a relative sliding between the rolling net and the feeding shaft, and whether there is a carding phenomenon.
 
2.) Unfeeding cutting misalignment First, the car motor or the optical axis synchronous wheel is loose. The second is the lost step. The lost step may be the machining speed. The idle speed or the acceleration setting may be too large. If the current is too small, the driver may be broken or the motor may be broken. Generally, the motor is bad and the lost step is less.
 
20 Feeder feed?
 
The feed length of the feeder is generally the photoelectric switch is bad or the light sensitivity of the photoelectric switch is not adjustable. The sensitivity of the photoelectric switch of the feeder is adjustable. When the upper and lower switches are connected at the same time, the feeder starts to work when the light sensitivity is too high. When sensitive, even if there is cutting material blocking, it will be inductive, so it will be long. At this time, adjust the sensitivity adjustment knob of the photoelectric switch wiring to adjust the light of the photoelectric switch when the material is blocked.
 
21 Is the galvanometer machine too thick?
 
The light intensity is not enough. The light path of the basic light path and the over-expanded beam is well adjusted. When the dynamic focus is well adjusted, the spot is still relatively thick. It is necessary to adjust the distance between the two lenses of the beam expander. Generally, the three-fold beam expander commonly used by our company is adjusted to expand the beam. The mirror spot diameter is 13-14mm, and the effect can be adjusted according to the customer's processing requirements.
 
22 galvanometer machine dynamic self-excitation?
 
Dynamic whistling for Shanghai dynamics is to adjust R103 R28 to adjust the self-excitation and howling adjustment is invalid. To measure whether the motor shaft is short-circuited with the casing, the power cord of the motor should be disconnected during measurement, otherwise it is long-conducting. If the power line measurement is still on, the motor and the case should be well insulated with insulating film and then adjusted. R103 R28 can be processed and replaced.
 
23 Marking machine and cutting machine marking or cutting size is wrong?
 
For the dynamic marking machine, when the vibration lens is not moving up and down, the size is not correct. Generally, the correction parameter data is changed or the error is corrected. The parameter correction of the galvanometer can be solved. The cutting size of the cutting machine is generally not the step size and the number of pulses of the driver. The general determination of the number of pulses caused by mistakes can be solved by calculating the step size.
 
24 Is the cutting machine turned back to the origin direction?
 
Such faults are generally caused by the origin switch being broken. The origin switch has a proximity switch and a mutual switch (magneto-switch). The two return-to-origin directions are generally caused by the short-circuit of the switch coil.
 
25 Power supply DC switching power supply failure of the cutting machine motor, motor drive, motor line and driver?
 
The specific manifestation of such failures on the equipment is generally
 
(1) The laser head does not move
 
(2) The abnormal operation of the laser head during operation is stagnation and jitter, etc. Generally, such a situation is first observed. Whether the DC switching power supply of 48v or 42v is working properly. The power supply voltage is insufficient or unstable. If the switching power supply works normally, It is necessary to consider whether the motor or the motor line is faulty. First, the motor should first observe whether the rotation of the motor itself is smooth when the motor line is disconnected from the driver. If the motor rotates differently, it can be directly judged as the motor failure. If the motor itself is running normally, measure the motor coil. For the six-wire motor, AC, A+, A- are a group of coils ac and a+ a- respectively turn on bc b+ b- as a group of coils, conduction If the conduction is not normal, it can be directly judged as a motor failure. For the stepping driver of Baishan and YAKO, if the DC power supply is normal and the motor line is disconnected, if the indicator light of the driver is not bright, the driver is directly judged to be faulty. Can not be directly judged can be tested by the replacement method; in such failures, the motor line failure is a small probability failure, and the motor and the drive are excluded. To consider the case where the motor wires, a short-circuit and detecting whether the open-circuit, with a multimeter detailed investigation of the measurements can be off.
 
26 Does the laser tube emit light?
 
1) The water level switch is broken.
 
2) High voltage line break
 
3) The laser tube is broken or burned out
 
4) Laser power supply is bad
 
5) Waterless cycle "including water pipe blocking and pump not working"
 
6) The water protection line is broken or the contact is not good.
 
7) Laser power supply does not enter 220V
 
8) There is no signal from the laser power supply. "The signal line is broken and the contact is not good. The relay that controls the light is broken, the board is bad, and the line is not good."
 
9) Online two-axis card is broken
 
27 Laser tube light is weak?
 
1) Laser tube burnout or laser tube lens burnout
 
2) Laser tube light decay
 
3) A component of the laser power supply burns out
 
4) The power of the laser setting is too low
 
5) The power regulator is not adjusted to the maximum
 
28 Cut constantly?
 
1) Laser tube light has low power and low power
 
2) The laser lens is dirty or damaged
 
3) The laser lens is not good, loose
 
4) The focal length is wrong
 
5) Light deviation
 
6) The power of the laser tube setting is too low
 
7) The platen is uneven
 
29 Can't open the machine?
 
1) The machine is not powered
 
2) The air switch jumped
 
3) The emergency stop switch is pressed.
 
4) Start button is broken
 
5) 24V transformer is broken
 
6) The contactor is broken,
 
7) Line break
 
8) Bad line contact
 
9)
 
30 24V switching power supply is bad 30 Machine X, Y axis can not move?
 
1) 42V switching power supply is bad
 
2) Bad card
 
3) There is a problem with the signal line
 
31 Is the machine X-axis or Y-axis not moving or not?
 
1) The drive is not powered
 
2) The drive is bad
 
3) The line contact of the driver is not good or broken.
 
4) The motor plug is broken or has poor contact
 
5) Motor shaft break
 
6) The drive shaft is loose or broken
 
7) There is a problem with the driver signal line
 
8) The slider is blocked or the drive wheel is blocked.
 
32 machine cutting position
 
1) Belt loose
 
2) Machine wheel screw loose
 
3) The machine driver is bad
 
4) The machine is broken or the line is damaged.
 
5) The machine motor plug is bad or the contact is not good.
 
6) There is a problem with the motor
 
33 The online machine does not detect the control card?
 
1) The card is broken.
 
2) The card is not plugged in
 
3) Computer plugin is bad
 
4) DPIO module driver is not installed
 
34 camera is not cut
 
1) Correction without school
 
2) The camera is not adjusted,
 
3) The template is not ready
 
4) Camera camera parameters are not adjusted
 
5) The parameters of the template are not adjusted, such as acquaintance ratio, etc.
 
35 No light?
 
Shorting L and GND as long as the light indicates that the laser power supply and the laser tube are no problem, only the signal problem; shorting P and GND is to judge whether the water protection switch is normal; shorting the AIN and 5V will grow out to indicate the laser tube laser power supply protection connection intact.
 
36 Can't my computer and device connect?
 
Updating the D13 driver may also be a USB cable.
 
37 When a shaft is turned on, can it be pushed by hand?
 
When the shaft is not moving during machining, the drive is broken. It is also possible that the transmission machinery is loose. (If the two shafts are not moving during machining, the hand can also be pushed at the time of starting, and the driver light is not bright, indicating that the 42V light-opening power supply is broken).
 
38 Will it jump in one direction when cutting?
 
Increasing the drive current may also be a problem with the drive being broken and the motor line.
 
39 Is the saw toothed?
 
Slider problem
 
40 cutting constantly?
 
The laser tube may be weak; the light path may be biased; it may also be a laser power source.
 
41 Laser head collision can not be restricted?
 
The home switch is broken, or it may not be set on the panel.
 
42 Cutting is not sealed?
 
Belt adjustment and parameter setting
 
43 Is the machine's cutting machine preset with light processing?
 
Generally control card problem
 
44 The size of the cut is inconsistent?
 
Wheelbase and pulse are not adjusted well
 
45 When working, a complete curve has a small distance to jump over without cutting, also known as jumping light?
 
This kind of problem is generally caused by the looseness of the big car slider in the case of long-term high-speed operation. It only needs to re-adjust the sliders on both sides of the cart to solve it.
 
46 When working, some places in the same edition cut and cut some places?
 
This kind of problem is generally caused by light deviation or uneven work surface, which requires dimming and adjusting the platform surface. Sometimes the light deviation is caused by the deformation of the guide rail, and it is necessary to adjust the guide rail.
 
47 When cutting, the two ends are sometimes cut into each other, sometimes separated?
 
This problem is generally caused by loosening of the fixed wheel fixing screws or motor wires. If there is a problem with the motor wires, it is best to replace them all. Do not change one or two separately.
 
48 Summer chillers are easy to alarm at high temperatures?
 
This problem is generally caused by too hot weather, poor cooling of the chiller or insufficient cooling capacity. There is no problem of insufficient cooling capacity from the refrigerating water machine. Generally, the heat sink is too dirty and the ventilating part is good to cause an alarm. Small chillers generally have insufficient cooling capacity, and the temperature difference can be increased, and the alarm temperature is appropriately adjusted to solve the problem.
 
49 hours when there is no light?
 
First, the signal temperature is unstable, including the light signal and the chiller signal, and then see if the potentiometer has poor contact, and finally check if the power supply is bad.
 
50 Boot car does not return to the original point, can't move?
 
This problem is generally that the car motor is not powered, and the laser head can be easily pushed by hand when the device is turned on. The cause of the failure is that the 48V open source power supply is broken, or self-protected. It can be turned off for ten minutes and then turned on. If it is not good, then change the 48V switching power supply.
 
51 After a few minutes, the light from the laser tube becomes weak.
 
There are generally three possibilities for this problem. The power supply has a problem, the laser tube is broken, and the frequency of the laser tube in the software is incorrect.
 
52 When the cart moves, it often shakes sharply?
 
This problem is generally caused by the servo limit line or the limit, and the line change or limit can be solved.
 
53 Two laser heads move around?
 
Generally, the board is bad and the signal given is incorrect.
 
54 Sometimes it is required that the two versions of the graphics can be docked, but can't be picked up when cut out?
 
This problem is caused by the fact that the feed drive shaft and the aluminum pass of the trolley are not parallel, and the trolley cannot be adjusted. Only by adjusting the feed drive shaft to solve the problem.
 
55 Cut with serrations?
 
The sealing slider is loose. The belt is loose, the belt synchronous wheel is eccentric, the curvature value is too large, the corner speed is fast, and the lens is not tight...
 
56 Laser tube power is unstable and the engraving is very good. After a few days, the carving is not the same.
 
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