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1, the main motor starting circuit failure, such as: not release the emergency stop button, loose cable wiring, 24V control power supply, etc.;
2, the main motor starting part of the relevant components failures, such as: thermal relays, circuit breakers, AC contactors, etc., overload protection or has been damaged;
3, power supply problems;
1, check whether the main motor starting circuit is an emergency stop is not released, the cable wiring is loose, the 24V control power supply;
2, check whether the main motor starting circuit part of the components of the overload protection, if there is a need to analyse the reasons, check whether there is damage to the components;
3, check whether the three-phase power supply is normal;
1, the slider guide is adjusted too tight;
2, the back stopper axis is not in place;
3, the slider is no longer on the dead position;
4, the foot switch and other signals are not entered into the module;
5, the proportional servo valve is faulty;
1, check the appropriate slider guide;
2, check the system on the actual position of the X whether there is a cursor, or in the manual interface to check the programmed value of the back stopper axis is the same as the actual value. 3, the Y axis status should be ‘1’, if it is ‘6’, check the actual Y axis coordinates, the value should be less than the difference between the Y axis and the back travelling;
3, the system on the Y-axis state should be ‘1’, if ‘6’, check the actual coordinates of the Y-axis, the value should be less than the difference between the Y-axis and the return;
4, according to the electrical schematic diagram, check the foot switch and other input signals are normal;
5, check the proportional servo valve Feedback is normal;
1, the slider is not to the speed changeover point;
2, the system Y-axis bending part of the parameter settings are not good;
3, the pressure is not enough, such as: programming reasons, machine parameter settings, hydraulic reasons, etc.;
1, check whether the Y-axis status from ‘2’ to ‘3’, the actual value of the Y-axis should be greater than the speed conversion point value, if not need to adjust the fast forward part of the parameters;
2, re-adjustment of the Y-axis bending part of the parameters;
3, to check whether the programming and operation reasons, or parameter setting reasons, or hydraulic reasons; with the help of a pressure gauge, multimeter, etc., first check the main pressure and the proportional pressure valve signals, and then Check whether the proportional pressure valve, the main pressure reducing valve is stuck, and then check the filter element and oil, and finally check the oil pump and its coupling;
1, no load can not return, may be a parameter problem or hydraulic failure;
2, processing can not return, the angle of the workpiece has not reached the set value;
3, processing can not return, the angle of the workpiece has exceeded the set value;
1, debugging the Y-axis bending part of the parameter, bending parameter should be based on the actual debugging, part of the gain is too small, the slider will be folded not moving or folded in place, too large the slider will be Jitter, the parameters should be adjusted to the action of the slider does not shake, gain as large as possible; or diagnostic procedures in the left and right valve bias settings are not good, too small Y-axis can not be in place, too large Y-axis can not be unloaded; if it is a hydraulic failure, you need to check the main pressure, check whether the PV valve S5 has always been in the position of the power supply;
2, may be part of the Y-axis bending parameter gain is set on the small side, it can be increased appropriately; or insufficient pressure The reason for the lack of pressure is to analyse the programming reasons or signal, hydraulic part of the reason; programming reasons are mainly the choice of mould, plate thickness, material, length of the workpiece, bending method, etc., hydraulic reasons are mainly whether the oil pump is leaking, proportional pressure valve is contaminated or damaged, whether the cartridge is blocked, whether the oil has been contaminated, etc.;
3. Mainly programming and operating reasons, check the programmed program and the processing of the workpiece;
The Slider Action is Not Good
1, the slider guide is not properly tightened;
2, the slider lock nut is loose;
3, the machine tool parameters need to be adjusted;
4, the proportional servo valve amplifier on the gain, the zero position needs to be adjusted;
5, the backpressure valve pressure is set incorrectly or imbalance between the two sides. Back pressure is set too small, the slider will slowly decline, the work will be shaking; back pressure on both sides of the imbalance, the slider will twist when running;
1, re-adjustment of guide clearance;
2, re-locking, if the lock nut and screw with too loose, need to be replaced;
3, if there is a reference curve, should be adjusted in accordance with the reference curve;
4, only the BOSCH, REXROTH valves can be adjusted, but need to be careful;
5, the use of the pressure gauge adjustment Back pressure valve pressure, and make both sides consistent;
1, proportional pressure valve, the main pressure reducing valve is stuck, the machine has been in the pressurised state;
2, cartridge clogging, the oil out of the oil is not smooth, the oil pump pressure has been high;
3, the oil has been used for too long, has been contaminated;
4, the quality of the oil is too poor;
5, the circuit breaker, the thermal relay out of the problem, up to the rated current on the action;
6, the system control pressure output part failure; , the system control pressure output part of the fault, send out the wrong signal, so that the proportional pressure valve has been working;
1, cleaning the proportional pressure valve, the main pressure reducing valve;
2, replace the filter element and check the degree of contamination of the oil;
3, immediately replace the oil filter element;
4, replaced with the recommended use of the oil;
5, the replacement of the circuit breaker, the thermal relay;
6, check the output of the system;
1, the fluid has been used for too long, has been contaminated;
2, the quality of the oil is too poor;
3, the oil tank inlet rubber skin there is no aging;
1, we recommend that the customer replace the oil on time;
2, the replacement of the recommended oil;
3, the replacement of the oil-resistant rubber plate;
1, the backpressure valve, the poppet valve is dirty or damaged;
2, the backpressure of the small;
3, the Glycine ring strains, wear and tear;
4, the oil cylinder Inner wall strain;
5, if the slider stops at any position slowly sliding, 5 minutes sliding less than 0.50mm, is normal, this phenomenon is mainly due to the characteristics of the hydraulic oil;
1, clean the back pressure valve, poppet valve, and if damaged, then replace it;
2, according to the standard re-adjustment of the back pressure valve pressure;
3, replacement of the Glycolite ring and check the reasons for Glycolite ring strains, abrasion;
4, generally due to oil contamination caused by, replace the Cylinder barrel, sealing ring;
5, no need to deal with;
1, back pressure on both sides is inconsistent, back pressure settings may be high;
1, the two sides of the back pressure to the prescribed value, to maintain consistency;
1, suction port in the tank leakage;
2, filling valve failure, such as the installation of incorrectly resulting in the valve spool jammed, or not enough spring pulling force;
3, Y-axis work into the parameter setting is not good;
1, check the sealing of the rubber plate, reinstall the cover plate here;
2, check the liquid filling valve installation, check the spool action, check the spring tension;
3, adjust the Y-axis work into the parameter;
1. Inappropriate setting of machine tool inertia parameters;
2. The material of the processed plate;
1. Re-adjust the machine inertia parameters;
2. Check the material of the plate;
1. The workpiece has more bends, resulting in a large cumulative error;
2. The bending sequence is unreasonable;
1. Fine-tune the precision of each bend, so the angle is as far as possible in the negative, the size of the most accurate as possible;
2. Where possible, adjust the bending sequence; 13. Adjust the bending sequence;
Reasons
1. Unreasonable selection of the lower mould during programming;
2. Incorrect impedance setting of the mould;
3. Incorrect selection of the bending method during programming;
4. Parameters of the machine constants have been modified, e.g., parameters of the material parameters, selection of the unit, etc.;
1. The selection of moulds should be guided by the relationship between the thickness of the plate and the opening of the lower mould;
2. Correctly set up the impedance of the mould;
3, Check the programmed program;
4. Check the machine constant parameters;
1. Programming the set X value exceeds the maximum value of the X-axis in the parameter;
1. Check the programmed program;
1. Hydraulic part of the failure, such as the filter element is blocked, the oil is contaminated, deterioration, etc.;
2. Long-time high-pressure work;
1. Check the filter element, the oil, replace it if necessary; 2. Replace if necessary;
2. Check the reason for long time high pressure work, whether it is actually necessary, or other reasons;
1. If the error is very large, it may be a programming error, loose slider connection, scale failure, etc.;
2. Normal a little error, can be corrected on the system, the correction can work stably, it is normal;
3. Angle is unstable, often change, may be connected with the slider loose, scale failure, material material, etc.;
1, check the running program, focus on checking the program of the mould, material, plate thickness, length of the workpiece, the bending mode and the actual operation of the same, the connection of the slider is not loose, the scale connection is solid;
2, normal a little error, there can be a variety of reasons for this, such as: programming the Material thickness and the actual use of the thickness of the error between; material uniformity, wear and tear of the mold, operation and other reasons;
3, check the Y-axis repeat positioning accuracy, check whether the slider connection, scale connection is normal, if normal, it is likely to be related to the material material material;
Processing the Size of the workpiece is Inaccurate
1, the size of the unstable, often change, may be related to the machine tool power supply, the servo drive, the servo motor encoder and the Related cables, systems, screw mechanical connection, synchronous belt (wheel) and other factors;
2, size deviation, but stable, mostly with the rear stopper beam parallelism, straightness, stopping finger parallelism, perpendicularity;
3, with the bending edge positioning, the bend angle of this channel is greater than 90 degrees, resulting in the size of the small;
1, check the rear stopper shaft axis repeat positioning accuracy, generally less than 0.02mm, such as a large difference, you need to check the possible factors one by one. Need to check the possible factors one by one, if it is caused by the servo drive, servo motor encoder, system, etc., it is best to be handled by the manufacturer;
2, first check the beam parallelism, straightness, and then check the blocking finger parallelism, perpendicularity;
3, if the bending edge positioning, try to make this bend is not greater than 90 degrees;
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