Installation of front and rear axles for the hotte

2022-07-29
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The heavy-duty robot installs the front and rear axles of the automobile

because the heavy-duty robot and its whole set of grippers can be adjusted simply and quickly according to the product requirements, BMW AG uses a high load curved arm robot to install the front and rear axle assemblies of the automobile

kuka's other three heavy-duty robots entered the BMW plant in Regensburg, Germany. The troika is equipped with a complete set of front and rear axles of the 1 and 3 series, and can also keep loose components that are not fixed with screws in the designated position. In addition, the robot and its whole set of grippers can be adjusted simply and quickly according to the changed product requirements. Four 2000 generation KUKA robots with a load capacity of 150kg optimize the door operation. They are the successors of the lifting platform

robot grabs the inspected front axle

BMW AG produces 3 series of cars in its Regensburg automobile factory, including high-end sedan, sports car, convertible car, all wheel drive, m3 and customized cars. Since june2004, it has also produced various models of 1 series. Since 1999, BMW has started to use Kr 500 heavy-duty robot, which is produced by Augsburg manufacturer with a load capacity of 500kg. These robots are used for camber adjustment equipment. Three new heavy-duty robots (one Kr 500 and two Kr 360) were put into use in august2003. These robots are installed on the 1 series production line and used for the reconstruction of the associated factory

Figure 1 the robot puts the assembled and inspected front axle from the assembly system onto an assembly bench

kr 500 robot (Figure 1) picks up all the assembled and inspected front axles from the assembly system and places them on the assembly unit support (MAT). The front axle is assembled into a transmission system on the assembly support, and the automobile manufacturer assembles it with the matching automobile at its assembly center

regardless of the configuration ordered by the customer, the combined gripper of the robot is applicable to the front and rear axles of all models of 1 series and 3 series. In addition, the robot can also meet the requirements of BMW to keep the axle components that are still active during operation, such as the damping strut and the front axle stabilizer, in the specified position. In this way, the six axis robot can accurately position all components that need to be fixed with screws on the assembly support mat

the control device of the robot is connected with the computer programming control device in the workshop, and the computer in the workshop communicates with the main computer of the general assembly equipment through the interface. The main computer informs the curved arm robot what kind of axles are needed and what set of running program the robot should use to place these axles on the assembly support mat

heavy haul robot with lifting table function

two Kr 360 heavy haul robots (Figure 2) operate the rear axles of series 1 and 3. At the same time, the robot takes over the function of the lifting table. The first Kr 360 robot with initial stress of plastic instability takes the rear axle from the assembly system and places it on the combined workpiece support in the memory. The memory separates the rear axle assembly from the assembly support mat, so BMW can continuously supply the rear axle for the automobile assembly; The second robot unloads from the memory and puts the rear axle on the assembly support mat. For this reason, it is necessary to accurately locate the placement position. Like the front axle, this is measured by a perceptron measurement system

Figure 2 two sets of kr360 heavy-duty robots are carrying the rear axle of the car and performing the function of the hub assembly station

in order to make kr360 in the best position in its task, the robot is placed on a 1.5m high base (Figure 3). The correct distance to the pick-up point and the delivery point is usually to lock the screw with the set torque, which is simulated and calculated by using the multi-faceted method supported by the computer before installation and commissioning

Figure 3 robots complete their tasks from a 1.5m high platform

due to the particularity of the gripper, the robot can operate all the automobile axles in Regensburg automobile factory, that is, in addition to the axles of the main series of models, it can also operate the axles of all wheel drive models and M3 models. Because the robot's control device moves the gripper as the seventh axis, in addition, the Kr 360 robot can also keep the car's axle on the wheel hub

BMW also uses KUKA robot for automatic operation of 1 series and 3 Series doors. Four Kr 150 robots of 2000 series working in pairs are equipped with 400 mm extension arms, replacing the same number of lifting platforms and their delivery mechanisms. Inside the two pairs of robots, there is one Kr 150 assigned to the front door and the rear door. When the electric aerial crane with air transport box stops on the lifting platform, the robot starts its operation process. While rotating its gripper, the relevant robot settles into the cargo lifting device, rises from the electric overhead crane, and places it on the lower floor for loading. Two workers install the doors removed from the corresponding vehicle body into the crane from both sides. After that, the robot moves the cargo lifting device back to a higher level and hands it over to the electric overhead crane. Due to its extremely high repetition accuracy, the robot can avoid damage to doors and electric overhead cranes, and because it can freely Evonik industrial group is helping to improve road safety programming through signs based on low-temperature plastic, the device has high flexibility

the built-in emergency stop system of the robot

the lifting platform can no longer represent the current technical level. Since the lifting platform is replaced by a robot, its usability has also been improved to the value required by BMW. In addition, the process has been optimized for robots with standard products. Finally, automakers also benefit from the integrated built-in emergency stop. Whenever one Kr 150 fails, the other pair of robots will take over the task of the other pair of robots. Once this is required, the user can shorten the beat time of the standby robot pair

that is to say, he can increase the power of the robot to 100% in a short time, so that the robot can be adjusted according to the working cycle of the electric overhead crane

mm modern manufacturing magazine (end)

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