The structure of the sheet metal plate shearing machine mainly includes: transmission system, body, slider (tool holder), pressing mechanism, material blocking mechanism, balancer, electrical control system, lubrication system and other auxiliary devices (sealing ring, valve, N2 nitrogen gas) return trip, etc. This article will introduce these machine compositions.
Sheet Metal Plate Shearing Machine Compositions
The transmission form of the plate shearing machine has three forms: mechanical transmission, hydraulic transmission and hydraulic-mechanical combined transmission. Generally speaking, the old-style small shears were mainly driven by mechanical transmission, but with the development of technology and production, the proportion of hydraulic transmission shears is increasing.
The transmission system of the mechanical transmission shearing machine is similar to the transmission system of the punching machine, and it is also composed of a motor, a flywheel, a clutch, a crank connecting rod mechanism, a brake, a shearing slider – a pressing slider, etc. The clutch is also divided into a rigid clutch and a friction clutch, and the operating performance and danger are also similar to those of a punch.
The transmission mechanism of the hydraulic plate shearing machine is relatively simple, and the pressing block and the shearing block are directly driven by the oil cylinders. Easy to operate, can realize single stroke, continuous stroke, inching stroke and return stroke; safer work, can prevent equipment accidents caused by overload; stable work, low vibration, low noise, can prolong tool life. However, a complex and precise hydraulic control system is required, and the maintenance workload is large.
The appearance and structure of the shearing machine mainly depends on the transmission method used.
Sheet Metal Plate Shearing Machine Body:
The body of the sheet metal shearing machine is usually composed of left and right columns, a workbench and a connecting frame. The left and right columns and the connecting frame are generally welded with steel plates. Front.
Working table and Handwheel:
Ball type within 16mm, front roulette
Over 16mm is roller type, side roulette
Slider (Tool Holder):
This is an important part of the hydraulic shearing machine, its upper part is connected with the connecting rod of the shearing machine transmission system, and the lower part is equipped with scissors. The size of the shear angle is also adjusted by the slider.
During the shearing process, the sheet material should always be pressed on the table, otherwise the spot material will be displaced or warped during the shearing process, resulting in an increase in the size deviation of the sheared material. Therefore, the shearing machine needs a pressing mechanism.
There are two common types of pressing mechanism: mechanical pressing mechanism and hydraulic pressing mechanism.
The sheet metal shearing machine uses a back gauge to ensure the required cutting length. There are two types of back gauges, manual and motorized.
(Basically, used for mechanical type) the function of the balancer is to reduce the impact of the moving parts on the eccentric shaft (in order to facilitate the adjustment of the center distance between the shaft and the shaft) and prevent premature wear of the shaft sleeve. There are two common types of balancers: spring type and cylinder type.
There are three types of blade forms and sizes used by the shearing machine: Type I, which is a four-edged scissors blade, with a rectangular section; Type II, a two-edged scissors blade, with a parallelogram section; Type III, a single blade. The blade is inlaid with steel.