Temps de lecture estimé : 10 minute

1. Précautions de la lame de cisaillement

Les modèles de lame de la cisaille hydraulique peuvent être divisés en lame de cisaillement à poutre oscillante hydraulique et lame de cisaillement à guillotine hydraulique. En tant qu'élément très important des machines de cisaillement et de forgeage, la lame de cisaillement est largement utilisée dans divers domaines. La surface de coupe peut obtenir une bonne rectitude et un bon parallélisme pour assurer la haute qualité de la pièce.

First of all, when using the hydraulic shear blade, it can not cut the laminated steel plate material. There is no need to trim the edge of the raw steel plate material. And there is no need to cut the narrow plate material that is not tight.

Not only that, the cutting edge of the shear blade should keep sharp. And if it becomes dull or cracked, we must replace or sharpen it in time. The gap between the cutters of the shearing machine is also very important.

And it is best to adjust it according to the thickness of the sheet to keep it within the allowable range. When the hydraulic shearing machine is working, the pressing device should firmly press the sheet. And it can not cut under the state of not being tight, so as to avoid accidents.

Due to the use of time and blunt mouth, the blade of the shearing machine becomes ground. And we should take out the shear blade before the blade is ground. Slitting machine blades are mainly used for sheet metal and strip slitting production lines. Using stable high-speed cutting tool steel SKD, SKH, tungsten steel, and other materials.

After a complete set of vacuum heat treatment processes, uniform hardness, precision processing. The slitting machine blade is the most important part of the slitting tool holder. And its processing precision is even more demanding. The round blade forms a round shape. Generally, the round blade is used in mechanical equipment, mainly for cutting, trimming, and other processing functions.

Round blades usually have a middle hole, the purpose is to make it fixed on the mechanical equipment. So as to achieve the cutting function. The improper selection of the slitting machine blade will easily shorten the service life of the slitting blade and fail to meet the requirements of the slitting index. The slitting material will produce burrs and produce a large amount of slitting powder.

2. Disassembly Steps of Hydraulic Shear Blade

• Démarrez la cisaille hydraulique, ajustez l'angle de coupe à 1, 0°. Et ajustez l'écartement des lames à la valeur maximale de 0, 48 mm.

• Ensuite, le poste d'outil de la cisaille hydraulique monte et descend pendant plusieurs tours. Éteignez la machine-outil et débranchez l'alimentation électrique principale de la cisaille hydraulique.

• Remove the protective fence of the hydraulic shearing machine, the pressing cylinder. (Note that there is hydraulic oil overflow) and the knife seat cover. Hydraulic Shear Blade

• First remove the lower hydraulic shear blade : loosen all the mounting screws of the lower blade. And use a long wooden square to firmly press the lower blade against the back of the machine tool to prevent the lower blade from falling backwards or slipping off. Remove the screws on the lower blade. And then pull out the lower blade from the side of the hydraulic shearing machine. Hydraulic Shear Blade

• Démonter la lame supérieure du sécateur hydraulique : desserrer toutes les vis de fixation de la lame supérieure. Et insérez deux équerres en bois appropriées entre l'établi et la lame supérieure. Appuyez fermement sur la lame supérieure et retirez les vis de la lame supérieure. Ensuite, desserrez lentement le tampon dans le carré de bois et retirez en même temps la lame supérieure du côté de la cisaille hydraulique.

3. Installation Steps of Hydraulic Shear Blade

The order of installing the hydraulic shear blades is exactly the opposite of the order of removing the blades. When installing the blade, the sharpened blade will be sharper. So the operator needs to be very careful, and it is best to wear gloves to operate. Hydraulic Shear Blade

First, remove the front worktable, front support arm, front shield, and lower backing plate of the shearing machine. We should noted here that since the shear blades are heavier and sharper, you should wear gloves when operating.

First, turn off the oil pump motor, loosen and remove the shear blade installation screw M12*45. Leaving one screw at each end, and then screw on the blade with two M12*45 screws from the back of the shear, using your hand grasp the two M12 screws, remove the one reserved at both ends, and gently remove the blade.

The difference with the CNC shear blade is that before removing the shear blade, first drop the slider to the bottom dead center. At the top dead center, use a wooden board to pad between the workbench and the upper blade, turn off the oil pump motor, loosen and remove all the mounting screws of the upper blade, and gently remove the blade.

• Installation de la lame de cisaillement supérieure: installez d'abord la lame, utilisez des vis M12 * 40 pour visser la lame supérieure, les vis aux deux extrémités ne sont temporairement pas installées, utilisez un bâton en bois pour maintenir la lame supérieure, de sorte que la lame supérieure de la lame supérieure est avec le curseur Une fois la surface de contact de la lame supérieure entièrement fixée, serrez les vis M12 * 40 installées à tour de rôle, déposez le curseur au point mort bas, éteignez le moteur de la pompe à huile, puis installez le M12 * 40 vis sur les extrémités gauche et droite de la lame supérieure et serrez les vis de la lame au couple de serrage de 35 N/M.

• Installation de la lame de cisaillement inférieure : démarrez d'abord la pompe à huile, soulevez le curseur jusqu'au point mort haut, éteignez la pompe à huile, installez la lame inférieure, vissez la vis à six pans creux M12*45 (pour l'instant, ne la serrez pas trop serré). Appuyez sur la lame inférieure avec une tige en bois, faites adhérer complètement la surface de joint de la lame inférieure et de la lame inférieure sur la table de travail, et serrez les vis M12 * 45 à tour de rôle si nécessaire. De cette façon, tout le processus d'installation de la lame de cisaillement est terminé.

• After installation, the upper and lower blades of the hydraulic shearing machine need to adjust the gap to ensure that the blade gap is accurate and consistent. Hydraulic Shear Blade

• Finally, install the cover plate of the cutter holder of the hydraulic shearing machine, the pressing cylinder and the guard rail in sequence. Hydraulic Shear Blade

4. Grinding Method of Hydraulic Shear Blade

Pour cisaille hydraulique, la lame doit être taillée après une période d'utilisation, afin d'améliorer l'efficacité du travail. Il existe certaines exigences pour la méthode de meulage des lames. Voici une analyse en plusieurs points :

• Start grinding from the plane of the blade to ensure that there is no dullness, and then grinding the side surface, paying attention to the parallelism. Hydraulic Shear Blade

• Si vous constatez que la lame en cours de meulage est inclinée, vous pouvez régler la pression de meulage et appliquer une force sur le côté le plus épais.

• Faites attention à vérifier fréquemment la précision de la plaque de broyage et à calibrer la plaque.

• Pendant le processus de meulage, si la température de la pièce dépasse 40-50°C, faites une pause pendant un certain temps et attendez qu'elle refroidisse avant de continuer, car la chaleur affectera la précision de la lame. La lame des cisailles hydrauliques peut conserver son bon après le meulage. Performances de base, coupant la pièce avec plus de force, pour assurer un processus de coupe en douceur.

• After the final grinding, we should coat the blades of the hydraulic shearing machine with a layer of anti-rust fluid to avoid rust. Hydraulic Shear Blade

5. Adjustment of Hydraulic Shear Blade Gap

Le réglage de l'écartement des lames est un facteur important qui affecte la qualité de coupe des lames de cisaille et prolonge la durée de vie des lames.

Lors de l'opération de réglage de l'écartement du tranchant de la lame de la cisaille, la fonction du clapet à bille de la cisaille est de mesurer l'uniformité de l'écartement du tranchant entre les lames supérieure et inférieure de la lame de la cisaille.

The specific method is as follows. With a single stroke, when the upper tool post of the shearing machine descends to the bottom dead center. Quickly turn the ball valve to close the oil circuit and make the upper tool post stop at the bottom dead center.

When adjusting the gap, temporarily loosen the locking screw, then turn the handle to the required scale value. And then tighten the screw. Then continue to open and close the ball valve slightly to make the upper tool post rise step by step over the full stroke. At this time, the uniformity of the blade gap should measure step by step.

The adjustment of the shearing gap of the shear blade should be determined according to the thickness of the sheet, generally about 1/20 of the thickness of the sheet. After the adjustment of the cutting edge gap of the shear blade completed, try cutting one from the thin plate to avoid damage to the blade.

A hydraulic shear blade, also known as a hydraulic shear cutter or hydraulic shear knife, is a cutting tool used in hydraulic shearing machines. These machines are used in metal fabrication and manufacturing processes to cut various types of sheet metal, plates, and other materials. The hydraulic shear blade plays a crucial role in this cutting process.

Here are some key points about hydraulic shear blades:

Cutting Mechanism: Hydraulic shearing machines use hydraulic force to drive the shearing blade or knife through the material being cut. The hydraulic system provides the power needed to make clean and precise cuts in the metal.

Blade Design: Hydraulic shear blades come in various shapes and sizes, depending on the specific cutting requirements. The blades are typically made of high-quality tool steel or other durable materials to withstand the cutting forces and maintain sharpness.

Blade Edge: The blade edge of a hydraulic shear blade is carefully designed to ensure a clean and straight cut. It should be sharp and properly maintained to prevent material deformation, burrs, or rough edges on the cut pieces.

Blade Maintenance: Regular maintenance and sharpening of the hydraulic shear blade are essential to ensure optimal cutting performance and the longevity of the blade. Dull or damaged blades can lead to poor-quality cuts and increased wear on the machine.

Blade Replacement: Over time, hydraulic shear blades can wear out due to the abrasive nature of cutting materials like metal. When a blade becomes excessively worn or damaged, it needs to be replaced to maintain the efficiency and precision of the shearing machine.

Cutting Capacity: The size and thickness of the material that a hydraulic shear blade can cut depend on the capacity of the shearing machine. Hydraulic shears come in various sizes and configurations to handle a wide range of materials, from thin sheets to thick plates.

Safety: Operating hydraulic shearing machines requires careful attention to safety procedures, including the use of protective equipment and adherence to machine-specific safety guidelines. Hydraulic shears are powerful machines, and improper use can lead to accidents.

In summary, a hydraulic shear blade is a crucial component of hydraulic shearing machines used for cutting sheet metal and other materials. These blades are designed for precision cutting, and their maintenance and proper operation are essential for achieving high-quality and accurate cuts in various industrial applications.