Industrial robot arm is a mechanical hoist of the injection molding machine which is used to catch things (objects) or pick them up. According to the control system, industrial robot arm can be divided into two main types, pneumatic device controlled and high-performance servo controlled. Pneumatic device controlled type of industrial robot arm is simply used for low speed point-to-point positioning. Servo controlled type of industrial robot arm is used for high-speed and high-performance positioning.

In terms of Delta servo system, it has been applied on high-performance industrial robot arm successfully. Not only the performance is greater than many foreign brands, the price of Delta servo system is more competitive also. Using Delta servo system makes the cost lower and improves your competition performance better than ever!

For example, in the figures above, the servo system used on the robot arm is Delta servo system which is constructed of ASD-A0421LA servo drive and ECMA-C3060402ES servo motor. The task of the servo system is to drive the main hoist of the machine to work smoothly and stably. As the operation speed of the servo system determines if the working efficiency of the industrial robot arm could satisfy the application requirements of the customers, the servo motor with high-speed and sophisticated positioning function should not have overshoot, vibration and long settling time, etc. problems. The demanding requirements to the servo system described above are achieved when the ratio of load inertia to servo motor inertia is close to 70.

The test result shows that when the Delta servo system operates under the condition of near its limit, the performance of Delta servo system totally exceeds the Japanese brands of servo system. The maximum speed could reach 2800rpm and the settling time of positioning is within the time of 80ms. During the travel of 1800mm, acceleration from startup to finish (positioning completed), the main hoist of the machine keeps high-speed and operates smoothly, and the operation of the servo motor is very stable as well.