Now a lot of machinery manufacturers, are choosing to use manipulators as the main mode of production, the use of automated manipulators to improve product production efficiency and product quality, reduce the production cost of products, but the machine manipulator can work accurately, in fact, is a three-dimensional space positioning problem, is a combination of several lines and angular positioning, Today, let's talk about a few factors that affect the production accuracy of manipulators?
Positioning mode and speed, different positioning methods affect different factors, such as mechanical block positioning, positioning accuracy and the stiffness of the block and the speed of the touch block when related factors. Positioning speed has a great influence on positioning accuracy. This is because the positioning speed is different and the energy of the moving parts that must be dissipated varies. In general, the positioning speed should be reasonably controlled in order to reduce the positioning error, such as improving the cushioning performance and cushioning efficiency of the buffer device, and the control drive system slows down the moving parts in a timely manner.
Accuracy and stiffness, the manufacturing precision of the manipulator and the precision of the installation speed regulation have a direct influence on the positioning accuracy, and when the structural stiffness and contact stiffness of the manipulator itself are low, the positioning accuracy is generally low due to the easy generation of vibration. The weight of moving parts includes the weight of the manipulator itself and the weight of the gripper, the change of the weight of the moving parts has a great influence on the positioning accuracy, and when the weight of the moving parts increases, the positioning accuracy decreases, so the design should not only reduce the weight of the moving parts themselves, but also consider the influence of the change of the grip during the
The driving source and control system, the pressure fluctuation of hydraulic and air pressure and the fluctuation of voltage, oil temperature and temperature will affect the repetitive positioning accuracy of manipulator. Therefore, the use of the necessary voltage stabilization and regulation of oil temperature measures, such as the use of accumulator to stabilize the oil pressure, with a heater or cooler to control the temperature, low speed, with temperature, pressure compensation flow control valve control.