CNC Knowledge: Summary of the common defects in machine tools

1. The machine tool cannot be returned to zero

reason:

1. The original points switch is blocked and cannot be moved;

2. The original point equipment cannot be broken towards the original point switch towards the movement position of the switch;

3. The original points switch in the water means that the switch contacts the contact rust which is not well exposed;

4. The original point switching line is disconnected or a failure of the input signal source;

5. Flow of the PLC entry point.

Counter-measuring:

1. Clean the stuck part to make the movement of its smooth activity or replace the route;

2. Set the installation location of the route switch so that the contact of the zero -point switch can be driven towards the gentle switch’s movement position;

3. Replace the route switch and take waterproof measurements;

4. Check if there is a short circuit of the switching line or if there is a signal source (power + 24 V CC);

5. Replace the entry point on the I / O card, make the settings of the parameters and modify the APL program.

Second, the positive and negative machine of the machine alarm alarm

In normal circumstances, this alarm will not occur.

reason:

1. The route switch is pressed and stuck (the route);

2. The route switch is damaged;

3. The route switching line appears, short-circuit and no signal source;

4. The limited gear block cannot maintain the switch’s contact in the action position;

5. Flow of the PLC entry point.

Countermeasures: 1. Manual or manual-he takes away from the safe position or clean the switch;

2. Replace the route;

3. Check if there are short circuits in the line of the route switch. Check the signal source (power + 24 V CC);

4. Set the installation position of the route switch so that it can be connected to the movement location by the switch to the movement position;

5. Replace the entry point on the I / O card and create the settings parameters and modify the APL program.

Third, a loose knife failure

Reason: 1. Insufficient atmospheric pressure;

2. The loose knife button is in poor contact or the route is disconnected;

3, the entry point of the loose knife button is burned or no signal source (+ 24V);

4. The loose knife relay does not move;

5. Too bad the loose knife electromage valve;

6. Insufficient sword volume;

7, lack of cups of oil oil;

8, the failure of the knife tank;

Countermeasures;

1. Check gas pressure to reach 6 kg positive and negative 1 kg;

2. Replace the switch or check the line;

3. Replace the PLC input port on the I / O card or check the PLC input signal source to modify the PLC program;

4. Check the PLC / None output signal, if the PLC output port is burned, change the PLC program;

5. The electromagnetic valve coil is burned and modified.

6. Adjust the amount of knife until the smooth knife is smooth;

7, add hydraulic oil to the cup of knife cylinder oil;

8. The screws inside the cylinder of the knife let go and disclose air, and the screws must be tight again to replace the sealing ring in the cylinder.

Fourth, the three -axis operation is abnormal during the execution

Reasons: 1. Porter failure;

2. RAils not defended and unbalanced from the Screwbalt bus;

3. The severe wear of wear -resistant tablets leads to serious scrapering rails;

4. The servomotor gain does not correspond;

Connection: 1, replace the bearings;

2. Correct the ScrewbalBut line;

3, Re-Stick Wear-Compressed Resistant, re-processing when the guide rail is scratching is too serious;

4. Adjust the Servo gain parameters to match it to the machines;

5. Failed lubrication

reason:

1. Lubricate the fuel tank of the pump;

2. The lubrication pump oil time is too short;

3. The sounding mechanism for the pressure of the lubrication pump is too fast;

4. There are oil leaks on the oil road from the oil hose;

5. The valve has a lane in the oil circuit does not move;

6, the engine of the oil pump is damaged;

7, lubrication of damage to the printed circuit board of the pump.

Counter-measuring:

1. Add the lubricant to the position of the upper limit line;

2. Set oil time for 32 minutes for 16 seconds;

3. If you can adjust the regulatory control speed, it will be replaced if it cannot be adjusted;

4. Check the oil circuit interface of the oil hose and manage it;

5. Replace the valve to a track;

6. Replace the lubrication pump;

7. Replace the printed circuit card;

6. The programming cannot be transmitted, the alarm P460, P461 and P462 appears (alarm FAMA SR0085 SR0086 SR0087)

Counter-measuring:

1. Check if there is a broken road or virtual welding in the transmission line, and the cap is inserted;

2. The lateral parameters of the computer transmission software must be consistent with the side of the tool-tool;

3. Replace the computer to test the transmission;

4. If the soil is stable;

Seven, knife library problems

reason:

1. Suddenly stop in the process of modifying the knife, you cannot continue to change the knife;

2. The Library of COUTEAUX in DOUYAO cannot be out;

3. Do not loosen the knife changing the knife;

4. The blade cannot be turned;

5. The blade suddenly turns a knife half-position during rotation;

6. When you change the knife, a loose knife and a tight knife error report the police;

7. When the sword returned during the change process, the sound of the main axis is very strong;

8. After changing, the main axis cannot be installed (the loose knife is abnormal);

Counter-measuring:

1. If the atmospheric pressure is sufficient (6 kg);

2. Check if the sword library is in place after the sword library, and if there is an output for the entry and exit of the entrance and exit of the blade and PLC library ;

3. Adjust the volume of the knife, if the water in the body of the cylinder is accumulated;

4. When the blade is turned after the turn of the knife, there is no way to break the electric power line of the blade engine and the contactor, if the relay is damaged, etc.

5. The blade engine brake mechanism is loose and cannot curb normally;

6. Check the air pressure.

7, the main axis knife claw is open to adjust the amount of knife;

8. Modify the sword change program;

1. Type of Doujiao, the robotic arm blade library does not work well or the rotation of the sword robotic database is not smooth, which is specifically reflected in the knife plate or the rotation of the arm of the sword, or the knife plate or the knife arm turns directly directly directly directly, leads to electricity. At present, it is necessary to determine whether the sword change mechanism is well lubricated, if there is lubricating oil in the mirror of the knife and arm oil, if there has butter with a blade turbine, etc. Otherwise, you have to add it.

2. Stop when the knife flows halfway through the knife. For the moment, you must determine if each part of the detection signal is in good contact and if the switch is sensitive.

For example, when the Douya knife library moves in place, it is stuck and you must check the sword library to enter the place.

When the Doujiao knife library is in place, the loose knife is stuck.

The knife handle with a robotic sword library on the arms of the knife without turning the cover of the knife to check the vertical inspection signal.

The knife sleeve with a robotic sword library is up and the knife is not turned to check the horizontal knowledge signal of the knife cover.

3. The Kaka blade knife, this situation is mainly for the robotic arm blade library.

Once the knife arm is completed, there is no loose knife. The stop point is well detected and if there is a flicker.

4. The knife is a knife.

(1) If you need to press the reset button on the path to change the knife.

(2) If the blade phase sequence is correct.

(3) There are iron shavings at the counter caused by account errors, counter cleaning or the bad counter switch, you must replace

8. The tool-tool cannot be called

reason:

1. The total contact in three phases of the power switch is poor or damaged by the switch;

2. The operating panel cannot be electrified;

Counter-measuring:

1. Replace the total power switch;

2. Check: A, there is no voltage output of the switching power supply (+ 24 V);

B, the system supply switch is not good, and the power supply is extinguished and extinguished;

C, the power relay of the system is not in contact and cannot be locked by itself;

D, disconnection of the circuit;

E, conduct the connection between the upper AC power, the system’s power relay is defective;

F, do you have a trip to the circuit breaker;

G, that the system works normally, or if the Z axis reader is damaged without an automatic output of the power signal.

New, the pump cannot be pumped on the water

1 thermal relay jumped

2 reverse water pump phase sequence

3 water pump water input The air part is not discharged

4 The water pump filter is blocked

5 Deduce liquid too little

6 times or block the oil hose

Line 7 is bad or burned (relay, contactor, pump cap), whether the tension is normal