Motion control Servo-electric drives for precise mould movements

Related Vendors

Meusburger Georg GmbH & Co. KG

HASCO Hasenclever GmbH + Co KG

BORIDE Engineered Abrasives

Servo-electric drives enable precise, repeatable movements in mould and die making. Meusburger explains how the technology can improve process reliability, reduce cycle times and offer an alternative to pneumatic and hydraulic systems.

Precise motion sequences in mould and die making are a key requirement for stable production processes and consistently high part quality. With the increasing use of electric injection moulding machines, servo-electric drive solutions are becoming increasingly important in mould and die making. They make defined movements with high repeatability possible and therefore offer a high-performance alternative to pneumatic or hydraulic drive concepts. They are particularly suited for applications in which exact positioning, dynamics and process reliability are required.

Functional principle of servo-electric drives

A servo linear actuator is largely made up of a servo motor, a drive regulator and a mechanical force transmission. The servo motor converts electrical energy into a controlled rotational movement, which is then converted into a precise linear movement, for example via a spindle. An encoder continually monitors the position of the motor shaft and delivers the data to the drive regulator. The continuous comparison of the set point and actual values creates a closed-loop control system, which enables precise positioning and high repeatability.

This continuous feedback ensures high positioning accuracy and repeatability. Especially for complex movements and repetitive production cycles, these are crucial prerequisites for reliable process control.

Advantages for mould and die making

According to Meusburger, servo-electric drives offer numerous advantages over pneumatic or hydraulic solutions, particularly when it comes to demanding motion control tasks:

• High precision: Position, speed and motion sequences can be accurately defined and controlled. This allows, for example, slides or cores to be positioned precisely.

• Reproducible processes: Defined motion profiles ensure consistent processes across many production cycles. This supports stable process control.

• Clean drive technology: Servo-electric systems operate without hydraulic oil and therefore avoid potential leaks. This creates clean production conditions and offers advantages for applications with high requirements for cleanliness or cleanroom conditions.

• Dynamic movements: Servo motors enable fast acceleration and braking processes. This enables short movement times to be achieved and provides targeted support for cycle times.

• Efficient energy use: The electrical energy is directly used to generate movement. Depending on the application, this can help to reduce the need for additional energy-intensive auxiliary systems.

• Easy integration: Servo-electric drives can be integrated into existing machine and control systems via suitable interfaces. This allows movements within the mould or die to be precisely synchronised with the machine cycle.

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