What is hydraulic shearing machine?

Shearing machine is a machine with a blade relative to another blade for reciprocating linear motion cutting plate.The motion of the upper blade and the fixed lower blade, using a reasonable blade clearance, the various thickness of the metal plate to impose shear force, so that the plate according to the size of the required fracture separation.Plate shearing machine belongs to one of the forging machinery, the main role is the metal processing industry.The products are widely used in aviation, light industry, metallurgy, chemical industry, construction, shipbuilding, automobile, electric power, electrical appliances, decoration and other industries to provide the required special machinery and complete sets of equipment.

Main classification of shearing machine

Shearing machine cooperate with other equipment to complete special purpose:

1, Cold bending forming line shearing machine: such as car rail cold bending line, carriage side baffle production line, color steel plate forming line and other production lines configured with special shearing machine;

2, Steel structure production line plate shearing machine: mainly used for Angle steel, H beam automatic production line to complete the cutting process;

3, steel Plate shearing machine: used for plate uncoiling leveling line, high-speed shearing machine designed to meet the requirements of fast cutting production line, thick plate line for hydraulic high-speed shearing machine, thin plate line with pneumatic shearing machine;High-speed line equipped with flying shear machine, continuous production, high efficiency.

The working principle of Shearing machine

Shearing machine after cutting should be able to ensure the straightness and parallelism of the shear surface of the sheet, and minimize the plate distortion, in order to obtain high quality workpiece.The upper blade of the plate cutter is fixed on the knife rest and the lower blade is fixed on the working table.The working table is provided with a feeding ball, so that the sheet material will not be scratched when sliding on it.The rear stopper is used for plate positioning, and the position is adjusted by the motor.The press cylinder is used to compress the sheet to prevent it from moving during shearing.The guardrail is a safety device to prevent accidents at work.The return journey usually depends on nitrogen, which is fast and has little impact.

The shearing machine is divided into a Bevel blade shearing machine and Flat blade shearing machine.

1.Bevel blade shearing machine

The upper and lower blades of the plate shearing machine into an Angle, the general upper blade is inclined, its inclination Angle is generally 1° to 6°.The shear force of the inclined blade shearing machine is smaller than that of the flat blade shearing machine, so the motor power and the weight of the whole machine are greatly reduced, and the practical application is the most.

2.Flat blade shearing machine

Good shear quality, small distortion, but large shear force, high energy consumption.More mechanical transmission.The upper and lower blades of the plate cutter are parallel to each other, and are often used for hot shearing of rolling billets and slabs in rolling mills.According to its cutting mode can be divided into upper cut type and lower cut type.

Multi-purpose plate shearing machine.

Operating procedures of shearing machine

Before work:

1.Before the empty running test run, manual steering should be used for a working stroke, and the equipment can be started only after the confirmation of normal operation.

2.For equipment with hydraulic device, check the oil volume of oil storage tank should be sufficient.After starting the oil pump, check whether the valve and pipeline leak, and the pressure should meet the requirements.Open the valve to let air out of the system.

At work:

1.do not shear laminated sheet, do not trim the edge of the burr edge sheet, do not shear pressure is not tight narrow sheet and short material.

2.the gap between the knife plate should be adjusted according to the thickness of the plate, but not more than 1/30 of the plate.The knife plate should be firmly fastened, the upper and lower knife plate surfaces should be kept parallel, and manual turning inspection should be applied after adjustment to avoid accidents.

3.The edge of the blade should be kept sharp. If the edge becomes blunt or cracked, it should be replaced in time.

4.when cutting, the material pressing device should be firmly pressed sheet material, not allowed to shear in the state of pressure is not tight.

5.For equipment with hydraulic device, except throttling and cutting, other hydraulic valves are not allowed to be adjusted without permission.

After work, the upper knife plate should fall on the bottom position

Precautions

1.Plate shears are suitable for cutting all kinds of steel plate, copper plate, aluminum plate and non-metallic material plate whose thickness is rated as the machine tool, and must be no hard mark, welding slag, slag, welding seam material, not allowed to exceed the thickness.

2.The use of plate shearing machine: according to the thickness of the material to be cut, adjust the gap of the blade;Adjust the die or fixture according to the width of the material to be cut;Before the operation of the shearing machine, make 1-3 empty stroke first, and then the shearing work can be implemented after normal operation.

3.If the machine is found to run abnormally, the power should be cut off immediately and stop for inspection.

4.When adjusting the machine, the power must be cut off. When moving the workpiece, pay attention to the safety of the hand.

5.Each part of the plate shearing machine should always be lubricated, and each shift should be filled with lubricating oil by the operator once, and the rolling bearing part should be filled with lubricating oil by the mechanic once every six months.

Use attention

6.Start the shearing machine for idling several cycles, to ensure that under normal conditions, try to shear different thickness of the sheet, from thin to thick.Ensure users are familiar with the shearing machine performance.

7.The test shear plate thickness must be adjusted to different blade clearance.If the blade clearance is not adjusted, the durability of the blade will be affected.

8. Open the pressure gauge switch and observe the oil pressure value during the shearing process. The pressure should be less than 20MPa when cutting 12mm plate.The pressure of the remote pressure regulating valve No9 is set at 20-22mpa when it leaves the factory. The user must abide by this regulation and shall not increase the pressure for cutting beyond the specified material surface, resulting in machine damage.

9. Sound balance during operation.Stop the shearing machine for inspection if there is any noise.

10.When the shears operate, the temperature of the oil tank is raised less than 60 degrees, and when it exceeds the temperature, shut down and rest.