Jiangsu Tianqi Star robot share: What are the factors that affect the accuracy of the five-axis injection molding machine robot?

Now many machinery manufacturers choose to use injection molding machine manipulator as the main production mode, but the use of automatic manipulator in production can improve product production efficiency and product quality, and reduce the production cost of products. Whether the robot manipulator can work accurately is actually a three-dimensional positioning problem, which is the combination of several linear positioning and angular positioning. What are the factors that affect the accuracy of the five-axis injection molding machine manipulator?

In many simpler cases, a single quantity may dominate. The factors that affect single line or single Angle positioning error are as follows:

1, positioning methods - different positioning methods have different influencing factors. For example, when a mechanical stop is positioned, the positioning accuracy is related to the stiffness of the stop and the speed at which the stop is contacted.

2, positioning speed - positioning speed has a great impact on positioning accuracy. This is because when the positioning speed is different, the energy that the moving parts must dissipate is different. Generally, in order to reduce the positioning error, the positioning speed should be controlled reasonably, such as improving the buffer performance and buffer efficiency of the buffer device, and timely controlling the drive system to slow down the moving parts.

3, accuracy - the manufacturing accuracy and installation speed adjustment accuracy of the injection molding machine manipulator directly affect the positioning accuracy.

4, rigidity - when the structural rigidity and contact rigidity of the injection molding machine manipulator are low, the positioning accuracy is generally low due to easy vibration. Zhejiang Yuanbang intelligent Equipment is a professional manufacturer of industrial intelligent manipulator, welcome customers to consult.

5, the weight of moving parts - the weight of moving parts includes the weight of the injection molding machine manipulator and the weight of the object to be grabbed. The change of weight of moving parts has great influence on positioning accuracy. Usually, when the weight of moving parts increases, the positioning accuracy decreases. Therefore, in the design, it is not only necessary to reduce the weight of the moving parts themselves, but also to consider the impact of the change of grip weight when working.

6, the hydraulic pressure and pressure fluctuations of the driving source pressure, as well as fluctuations in voltage, oil temperature and air temperature will affect the repeated positioning accuracy of the manipulator. Therefore, measures were taken to stabilize the oil and adjust the oil temperature. For example, the accumulator is used to stabilize the oil pressure, the heater or cooler is used to control the oil temperature, and the temperature and pressure compensation flow control valve is used to control the low speed.

7, the control system - switch control, electro-hydraulic proportional control and servo control position control precision is different. This is not only because of the different precision and sensitivity of various control elements, but also related to the presence or absence of position feedback devices.