Classification and structure of hydraulic plate metal hydraulic shearing machine
Hydraulic plate metal shearing machine can be divided into straight line type and swing type according to different motion modes of their tool holders. The linear structure is relatively simple (like a gate, so it is also called a gate type), which is easy to manufacture. The blade section is rectangular, and the four sides can be used as blades, so it is more durable. The tool rest swings around a fixed point during shearing, which has the advantages of less friction and wear between the upper and lower cutting edges, less blade deformation and high shearing accuracy. When oil enters the upper chamber of the oil cylinder at the left end of the machine, the piston drops, while the oil in the lower chamber enters the upper chamber of the oil cylinder at the right end to lower the piston, thus ensuring the parallel work of the tool rest. When the oil volume in the series oil circuit increases or decreases, the shear angle of the tool holder changes accordingly. When two copper plates are sheared, the four corners of the metal hydraulic shearing machine are reduced to ensure that the plates are not twisted; The stroke of the tool holder can be shortened, and the stroke times per minute can also be increased. This structure usually uses nitrogen accumulator to push one or two return cylinders to shorten the interval time, thus improving the productivity of the machine.
Typical structure of hydraulic plate metal hydraulic shearing machine – body:
- The machine body is generally composed of left and right columns, workbenches, beams, etc.
- The fuselage is divided into casting combined structure and integral welded structure.
- The body of the casting composite structure is mostly made of castings, and the components are connected into a whole through studs and pins.
- The fuselage of this structure is heavy, with poor rigidity, and the machining work of the joint surface is also large.
- Compared with the casting structure, the overall welding structure has the advantages of lighter body weight, better rigidity, easy processing, etc.
- At present, the number of airframes with integral steel plate welding structure is increasing.
After shearing, the plate metal hydraulic shearing machine shall be able to ensure the straightness and parallelism of the shearing surface of the plate to be sheared, and minimize the distortion of the plate to obtain high-quality workpieces. The upper blade of the shearing machine is fixed on the tool holder, and the lower blade is fixed on the workbench. The pallet ball is installed on the workbench to prevent the sheet from being scratched when sliding on it. The rear stopper is used for sheet positioning, and the position is adjusted by the motor. The pressing cylinder is used to press the sheet to prevent it from moving during shearing. Guardrails are safety devices to prevent industrial accidents. The return journey is generally made by nitrogen, with fast speed and small impact.
Hydraulic plate shearing machine is a technical machine that realizes the action control of one plate shearing machine or multiple plate shearing machines through digital instructions composed of numbers, characters and symbols. The generation depends on the emergence of data carriers and binary data operations. It has accurate forced positioning, worm gear and worm drive, concentric smooth screw and noiseless structure; Steel plate welding structure, hydraulic transmission, accumulator return, convenient operation, reliable performance, beautiful appearance. It belongs to one kind of forging machinery, and its main role is 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 required special machinery and complete sets of equipment.