Research on Velocity-Displacement Curve for Mechanical Linkage Servo Press

Abstract

With main transmission system structural form of main servo motor-worm and worm gear commutation reducer-transmission screw-linkage force increasing mechanism, mathematical model of linkage force increasing mechanism is established to obtain the relationships of the velocity and displacement between nut and slide. Velocity and displacement of feature points of slide on the velocity-displacement curve inputted by user transform into which of nut by binary search algorithm and linear interpolation calculation. The feature points of nut transform into the velocity and displacement arrays of points based on S-curve, and then the arrays of points transfer through UDP protocol to lower computer. After the linear fine interpolation by Siemens Simotion D425 motion controller, slide moves according to the setting velocity-displacement curve. The experimental results show that slide moves smoothly, which meets specific technology requirements. The achievements have been successfully applied to a self-developed 2000KN mechanical linkage servo press in a production line of hot forming technology for more than one year, which extends the technology application scope of traditional mechanical press, and improves product quality.

Study on dynamic characteristic and forging capacity of the direct drive press with symmetrical toggle booster mechanism driven by TPMLM

“…Make: X = 2acosa À 2a À 2b; Y = 2a 2 + 2ab À 2a 2 cosa À 2absina Thus, equation ( 8) can be simplified as equation (9).…”

“…Xie et al 8 has carried on the optimization research on double toggle mechanical press. Yu et al 9 and Lu 10 analyzed the kinematics of the servo press of linkage servo press. Halicioglu et al 11 made a study on the process curve of servo press.…”

Prediction of Pressing Quality for Press-Fit Assembly Based on Press-Fit Curve and Maximum Press-Mounting Force

“…Although the reliability of FEA has been demonstrated, however, since the accuracy of the method is very low, it cannot satisfy the precision requirements of microparts assembly. Yu et al [4] investigated the velocity-displacement curve for mechanical linkage of servo presses; according to the relationship between velocity and displacement of mechanical linkage, it could be validated that the technology scope of mechanical linkage servo presses was larger than that of traditional mechanical presses. In addition, mechanical linkage servo presses were more productive than traditional mechanical press.…”