Nowadays, the production configuration without industrial robots is unimaginable, and the range of applications of robots continues to increase. But because the automation plant expects a permanently stable multi-axis motion, the cable that drives the robot will be under extreme pressure. This is a particular challenge for cable and connector manufacturers.
FAT1315-1
The igus chainflex high-flexible robot cable CFROBOT8.052 is the first CAT7 bus cable tested for torsional motion.
According to industrial market forecasts, the number of industrial robots sold this year will exceed 250,000 units. This is a huge global market for robot manufacturers. In order to ensure that there is no interruption in the data and kinetic energy supply of the robot, it is necessary to monitor the cable in which continuous 3D motion is required. Cables used in robots are subject to torsional stress, so their construction and production process are completely different from those used for linear reciprocating motion. The latter requires as compact a design as possible, a tightly woven braid, and a high-pressure extrusion of the outer sheath. This "sturdy" construction ensures stable operation of the cable within the chain. On the contrary, robotic cables require “stress-compensating†components, loose braided structures, different slidable modules and special shielding designs to ensure that the cable can be functionally stable in millions of torsion-containing operations. This is because cables for robotics must undergo a full and repeated angular transformation during their operation. For example, the pitch of the stranded structure needs to change as the angle of twist changes. Cable specialists igus designed cables for special applications that continuously convert torsional stresses, using special structures such as adding sliding elements between the stranded strands and materials that absorb torsional stress to counteract the core strands during torsion. Force. At the same time, such torsion applications have extremely high requirements for the shielding of the cable. In order to ensure that the force acting on the shielding layer is not too great, we have added twistable components inside and outside the shielding layer, which ensure that the shielding layer can move freely between the core stranded structure and the outer sheath. . Of course, the shielding layer itself is also designed with a special weaving angle, especially that some types of shielding layers are formed by twisting along the twisting direction. These "soft" constructions provide the necessary freedom of movement of the entire cable, reducing stresses during tension and compression, and preventing equipment downtime due to unintended breakage of the conductor. The Chainflex high-flex cable family "CFROBOT" was born. This series of cables can be used for torsion applications with a twist angle of ±180°/1m, and igus can provide up to 36 months or 10 million double cycles. Commitment, whichever comes first.
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In the 2,750 square meter igus test lab, the cable is subjected to more than 200 million cycles per year. Based on these extensive tests, igus offers a 36-month warranty on all chainflex high-flex cables for high reliability.
The most suitable robot cable and three-dimensional drag chain
Based on 50 years of extensive experience in this field, our cable outer jacket material is highly matched to the triflex R robotic towline, thus minimizing wear and tear. The TRCF series in the Triflex R is a fully enclosed 3D robotic towline with three chambers: all three chambers can be opened and closed independently. The power supply hose can be filled in any one of the chambers to ensure that the hose is not damaged to the maximum extent, and the entire power supply can be stable regardless of the position of the robot shaft. The main condition for safe and stable operation of robot cables and hoses in three-dimensional chains is the minimum bend radius required. If the bend radius does not reach the desired value, there is a risk of cost-intensive failures and downtime. The technical design concept of igus triflex R is to ensure that the bending radius of the triflex R three-dimensional towline is kept at the specified minimum value regardless of the position of the robot. The wrapped wraparound structure can be used when the running bending radius is less than the minimum value. Stop more twisting movements. Moreover, the modular design of the igus triflex R towline limits the torsion angle of each chain link to within ±10°. These advantages allow the torsion forces of the cables inside the towline to be evenly distributed throughout the cable during the torsion process, unlike other pipeline package systems, acting only on a small piece of stress relief component. The minimum bend radius defined by the triflex R robotic energy supply system guarantees the stability of the robot's operation, especially in applications with hoses and flow drills. This is because once any kinking of the hose occurs, the power supply to the screws on the tool is interrupted, causing the entire device to stop operating.
Continuous testing brings predictable stability while reducing costs
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Based on more than 50 years of practical experience in various fields, the wear between the outer sheath material of the cable and the triflex R three-dimensional towline has been minimized.
Igus has been researching in the field of highly flexible motion cables for more than 25 years. The “chainflex†series of high-flexible cables has repeatedly established new benchmarks in the fields of automation and robotics. It is now a well-known supplier of high-flexible cables for various types of products. Sports occasions, including continuous running towline systems and torsional stress applications. Igus has a 2,750 m2 large test laboratory in Cologne, Germany, designed for towline testing. In the lab, we have tested the CFROBOT series cables millions of times, continuously monitoring the core resistance values ​​on different test equipments, and monitoring the cable conditions. The biggest challenge in testing is undoubtedly the simulation of every application that may involve torsion to determine the performance of the cable under various sports conditions. The service life of the cable in a linear motion chain is relatively predictable, as most of the operating conditions and parameters are known to be fixed, but the robot application is much more complicated, especially if the actual operation of the robot is usually not complete. Matches the initial plan design. Therefore, it is extremely important for cable suppliers to continuously test, test, and retest. All test results are stored in the igus database. This information, combined with our decades of engineering plastics experience, allows us to provide a 36-month warranty on chainflex high-flexibility cables, which will make mechanical engineering designs accurate. If the CFROBOT robot cable runs under the conditions of the sample book, but a fault occurs, we will immediately replace the cable with a new one. In addition, users can order cables of different lengths as needed, starting from one meter and shipping within 24 hours. The biggest advantage of the CFROBOT series cable is that it is developed for robotic torsion applications, including more than 100 models of standing stock, users no longer need to be constrained by expensive and long-term special cables, but can be used in existing chainflex Choose a product that suits your device in a highly flexible cable. (This article is from igus)
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