Shenchong is a professional CNC sheet metal machine manufacturer for press brake and shear machine.

  Last Updated: 2020-10-21 16:00:00

Let’s quickly study the working principle of the hydraulic plate shear.

1. What is Hydraulic Plate Shear Machine?

Hydraulic plate shears are straight line shears, which are mainly used to cut the straight edges of metal plates of various sizes. The hydraulic plate shear is a hydraulically driven shear.

1.1 Movement of hydraulic plate shear machine

The hydraulic shearing machine uses a moving upper die and a fixed lower die, and uses a reasonable blade gap to apply shearing force to metal sheets of various thicknesses to make the sheets break and separate according to the required size.

Hydraulic plate shearing machine is a machine that uses one blade to reciprocate linear motion relative to the other blade to cut the steel plate. The die of the shearing machine is the blade. Divided into upper knife and lower knife, the upper and lower knives of the guillotine shears can be interchanged, and the 4-sided edges can be used.

Generally, cutting carbon steel plates uses 6CrW2Si blades, while cutting stainless steel uses C12MoV or H13 materials, because stainless steel is harder and requires a clean cutting surface, so hard blades are needed.

1.2 Application of hydraulic plate shear machine

In steel rolling, automobiles, airplanes, ships, tractors, bridges, electrical appliances, instruments, boilers, pressure container, there are general applications in various industrial sectors such as containers.
Different brands and models of hydraulic plate shear have different prices.

Types of hydraulic plate shear: hydraulic plate shears, guillotine shears, pendulum shears, CNC shears, mechanical shears, etc..

You may also be interested in this: Safe Operation of Sheet Metal Guillotine Shear

2. What is a CNC hydraulic plate shear machine?

hydraulic plate shear

CNC shearing machine refers to the technology that uses digital instructions composed of numbers, characters and symbols to realize the motion control of a shearing machine or multiple shearing machines.

CNC shears generally use general-purpose or special-purpose computers to achieve digital program control, which usually controls mechanical quantities such as position, angle, and speed, and switches related to the direction of mechanical energy flow.

The production of CNC shears relies on the appearance of data carriers and binary data operations. CNC shearing machine refers to the technology that uses digital instructions composed of numbers, characters and symbols to realize the motion control of a shearing machine or multiple shearing machines.

3. Differences between hydraulic plate shear and press

Different from the shearing machine, the working principle of the hydraulic press is to convert the circular motion into linear motion. The main motor outputs the force to drive the flywheel, and the clutch drives the gear, crankshaft (or eccentric gear), connecting rod, etc..

To operate to achieve the slider Linear motion, the motion from the main motor to the connecting rod is circular motion. Between the connecting rod and the slider, there needs to be a transition point between circular motion and linear motion.

3.1 Hydraulic press

There are roughly two mechanisms in its design, one is ball type and the other is cylindrical. This mechanism converts circular motion into slider Linear motion.

Working principle of hydraulic press

The hydraulic press machine presses the material to deform it plastically to obtain the required shape and accuracy. Therefore, it must be matched with a set of molds (upper and lower molds), the material is placed in between, and the machine applies pressure to deform it , The reaction force caused by the force applied to the material during processing is absorbed by the hydraulic press machine body.

Influences of hydraulic press die

The accuracy and rigidity of the hydraulic press shear machine ave an extremely important impact on the life of the die. The hydraulic press machine has high precision and good rigidity, and the die life is greatly improved.

3.2 Hydraulic plate shears

After cutting, the shearing machine should be able to ensure the straightness and parallelism requirements of the shear surface of the sheared sheet, and minimize the distortion of the sheet to obtain high-quality work pieces.

The upper blade of the shearing machine is fixed on the knife holder, and the lower blade is fixed on the workbench. A material holding ball is installed on the workbench to prevent the sheet from being scratched when sliding on it.

The back gauge is used for positioning the plate, and the position is adjusted by the motor. The pressing cylinder is used to compress the sheet to prevent the sheet from moving during shearing.

The guardrail is a safety device to prevent accidents at work. The return journey generally relies on nitrogen, which is fast and has little impact.

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