3500/62-03-00 The traditional resistance welding equipment sends the pressure value set by itself to the robot through the main line and finally the robot controls the welding pressure, or even simply sends the pressure setting and control to the robot, and this control is often in constant torque mode. The PRC7000 electric servo control system can not only realize direct control of spot welding pressure, but also realize variable pressure control of welding process.
When the PRC7000 controls the servo welding pliers, it can also meet the requirements of various complex welding processes with variable pressure and variable current, such as for 2 layers of ultra-high strength steel thermoformed steel plate + a layer of 0.8mm thin galvanized steel plate. Through this variable pressure and variable current combination parameter setting, perfect solder joint quality can be easily and stably obtained.
With the application of various complex materials in body in white, more and more spot-welded plates (such as thermoformed ultra-high strength steel plate, cast aluminum, aluminum alloy plate, etc.) have no obvious dynamic resistance characteristic curve, so the adaptive technology based on dynamic resistance curve is difficult to fit for the spot-welding quality control of such plates. The new generation of adaptive algorithm control based on the displacement change of the solder joint can measure the displacement change of the electrode in real time t3500/62-03-00 hrough the PRC7000, and more accurately control the quality of spot welding. Because it can achieve 100% adjustment and control of solder joint quality, it can greatly reduce the workload of manual inspection of solder joint quality in normal production. According to the data of a German auto factory with an annual output of 200,000 vehicles, due to the full use of the PRC7000 displacement adaptive solder joint quality control cabinet, 100% solder joint quality monitoring is achieved, reducing the workload of ultrasonic and destructive testing by more than 95%, and the annual cost can be saved about 1 million euros.
The PRC7000 dynamically adjusts the pre-compression time by measuring the change of pressure and displacement at the solder joint in real time, which can greatly increase the production beat to about 5%.
By analyzing the new mechanical dimension parameters (sheet thickness, indentation…) at the solder joints The large amount of available data can be used for statistical analysis of the quality of the solder joint plate, indicating how many solder joints have gap problems, how many flange width is too small, or at which points t3500/62-03-00 he welding pliers are mispositioned, so as to achieve additional functions to improve the process control of the welding process.
Through additional analysis of the force signal to improve the detection of solder joint splash, splash detection and identification must meet two conditions: The force and displacement must fall within a certain time range (redundant information), which can not only identify the splash more accurately, but also identify the size of each splash, that is, the size of each splash can be quantified, so that the automatic optimization and reduction of the splash can be achieved.
