The flexible motion profile allows cycles to be programmed individually and exactly. The result: a significant improvement in productivity. In order to shorten the cycle times, however, the ram must be accelerated rapidly to beyond the upper dead point during the no-press interval and then braked down again or operated with a pendulum stroke.

Optimized motion control

The functions in the SIMOTION SimoPress Servo application use the parameters of the press, the forming process and the drive train (SINAMICS and SIMOTICS torque motor) to calculate ram kinematics which are optimized to save energy, in other words, an optimized traversing profile with smooth, flowing transitions which protect tools and materials and prevent excessive power and torque peaks.

The end user benefits considerably from the result: A new pressing tool can be set up quickly and easily with just a few parameters. SimoPress Servo also includes an input screen with which the motion control of the servo press can be visualized in WinCC flexible.

Input screen of SIMOTION SimoPress Servo and the optimized energy-saving motion profile calculated on the basis of the input parameters

Efficient energy management

As on servo presses the energy for the motion and the forming process is provided exclusively by servo drives, there is an oscillation of energy resulting from sudden acceleration and subsequent sudden braking. This effect is cleverly used with intelligent energy storage methods so that the sudden acceleration and braking energy peaks are held in the machine and no longer have to be supplied by the factory power system. The connected power for a servo press is therefore at the same level as a comparable conventional press. The following can be used as energy storage linked directly to the SINAMICS S120 DC link:

• Capacitor modules, several modules can be linked to increase the storage capacity
• Kinetic energy storage

Solutions for servo presses with SINAMICS Energy Management