How to distinguish the quality of the blade of the plate shears? Maintenance of plate shears.
Classification and structural characteristics of plate shears
1、 Classification
1. Flat blade plate shears
The shear quality is good and the distortion is small, but the shear force is large and the energy consumption is large. There are many mechanical transmission. The upper and lower blades of the plate shears are parallel to each other, and are commonly used in hot cutting blooming billets and slabs in rolling mills; According to its cutting method, it can be divided into up cutting type and down cutting type.
2. Inclined blade plate shears
The upper and lower blades of the plate shears form an angle. Generally, the upper blade is inclined, and its inclination angle is generally 1 ° ~ 6 °. The shearing force of the oblique blade plate shears is smaller than that of the flat blade plate shears, so the motor power and the weight of the whole machine are greatly reduced, and they are most commonly used in practice. Plate shears manufacturers mostly produce this kind of plate shears. This kind of plate shears divides the brake type plate shears and pendulum type plate shears according to the movement form of the knife rest; According to the main transmission system, it is divided into hydraulic transmission and mechanical transmission.
3. Multi purpose plate shears
(1) Sheet metal bending and shearing machine: that is, two processes of shearing and bending can be completed on the same machine.
(2) Combined punching and shearing machine: it can complete the shearing of plates and profiles. It is mostly used in the blanking process.
4. Special plate shears
(1) Plate opening and leveling line plate shears: high speed plate shears designed to meet the requirements of fast cutting of the production line are used on the plate uncoiling and leveling line. Most of the thick plate lines are hydraulic high-speed plate shears, and most of the thin plate lines are equipped with pneumatic plate shears; The high-speed line is equipped with flying shears for continuous production and high efficiency.
(2) Steel structure production line plate shears: mainly used for angle steel, H-beam automatic production line to complete the cutting process.
(3) Cold forming line shears: for example, special shears configured on production lines such as automobile longitudinal beam cold forming line, car side baffle production line, color steel plate forming line, etc.
Structural features
1. The machine is equipped with three processing units of punching, shearing and folding. The punching, shearing and folding of busbar can be carried out separately or simultaneously through manual or foot switch. This machine has high production efficiency and convenient use.
2. The working stroke of each processing unit can be easily adjusted to reduce processing time and improve production efficiency. A variety of processing functions can also be realized by changing the mold, such as punching long round holes, bending vertically, bending horizontally, embossing and flattening.
3. The bending unit is of closed structure and adopts horizontal processing method to ensure the structural strength of the bending unit. By changing the bending die, the flat bending, vertical bending, embossing and flattening of the workpiece can be completed; For busbar bending with different thickness, the corresponding bending angle can be completed by adjusting the induction switch of the working oil cylinder to control the travel distance, and the displacement travel counter corresponds to different numbers.
4. The punching and shearing processing unit adopts the vertical processing mode, and the machine is equipped with two operation modes: manual button and foot switch. The operation is simple, flexible and convenient, and the general skilled workers can operate it easily.