Solution center

Tetran inverter punching machine conversion

一．Industry Profile

 Stamping production is mainly for plates.Through the tooling, it can make blank, punching, forming, drawing, trimming, fine blanking, shaping, riveting and extrusion parts, etc., which are widely used in various fields.

At present, the research and development of domestic high-speed punching machines basically keeps pace with the development of the domestic stamping market. Another area in which domestic punching machine manufacturers want to compete with international top brands is technological innovation, such as control systems, material technology, mold technology, etc.Frequency converters, as drive components of punch control, have also been derived from generalization to specialized frequency converters.The performance of the inverter plays a decisive role in the output stability, accuracy, reliability and load carrying capacity of high speed punch.

二． Technology description and control requirements

1.Technology description

The design principle of punching machine is to convert the circular motion into linear motion. The main motor exerts force to drive the flywheel, crankshaft (or eccentric gear), connecting rod, etc. to reach the linear motion of the slide, and the motion from the main motor to the connecting rod is circular motion.

2. Equipment requirements

At present, the high-speed punch on the market has the following characteristics:

(1) The machine body adopts high strength cast iron, after annealing, vibration stress relief and other processes, so as to ensure long-term accuracy.

(2) Adopting dynamic balancing system to reduce the vibration of the punching machine to the extreme, thus ensuring the accuracy of the stamped products.

(3) It adopts frequency converter speed control system, with adjustable stroke speed, high stamping frequency, low noise, and stable speed, zero error, suitable for a variety of stamping  craft, etc.Equipped with microcomputer control unit, all information is displayed on the desktop, which is centralized and convenient to operate and easy to maintain.

三． Solutions

Performance characteristics of Tetran T510 vector converter

Tetran T510 series vector frequency converters have been applied in batches in a machinery equipment company in Dongguan, fully meet the harsh requirements of punch equipment.T510 series vector frequency converters have the following unique advantages in punching equipment:

(1) The vector control response is fast, the low frequency torque is large, the output is smooth in each frequency band, the torque dynamic response is fast, and the speed stability accuracy is high.The overload capacity can reach 180% and the starting torque can output 150% at 0.5HZ, which can ensure the reliable and stable operation of the punching machine.The output frequency is stable without fluctuation at the moment of clutch closure of the punch.

(2)The scientific and reasonable speed tracking algorithm makes the inverter automatically track the frequency of its current operation without stopping the motor, capable of emergency stop and start, and can start smoothly without failure when the motor is running inertially, which greatly improves the safety performance of the punching machine.

(3)A variety of flexible control methods to meet the requirements of different complex working conditions.

(4)The structure adopts independent air duct design, the fan can be removed freely, and the heat dissipation is good.

四．Electrical control diagram and parameter setting

六．Field Application Scenarios