The mechanical body of CNC plate shears

submitted 9 months ago by mieuxx to arts1

The mechanical body of CNC plate shears generally includes bed, worktable, spindle components, tool components, etc. CNC plate cutting machine is a typical representative of mechatronics products. On the one hand, its mechanical structure has many similarities with ordinary machine tools, on the other hand, compared with ordinary machine tools, it has the following characteristics in structure: (1) the main transmission device mostly adopts stepless speed change or stepwise stepless speed change, and the rotation direction of the spindle can be controlled by program Speed, the main drive has a wide speed range. The main drive system of high-speed CNC cutting machine has begun to use compact and excellent performance motorized spindle. (2) seamless ball screw drive and backlash free gear drive are widely used in the feed transmission device. The friction spiral tube forming machine manufacturer force of the motion pair is reduced and the transmission accuracy is improved by using plastic guide or hydrostatic guide. The feed part of high feed CNC cutting machine is directly driven by linear motor, which realizes high speed and high sensitivity servo drive. (3) the bed, column, beam and other main supporting parts adopt reasonable section shape, and take some measures to compensate deformation, so that it has high structural stiffness. (4) the machining center is equipped with tool magazine and automatic tool changing device, which can carry out multi process and multi surface processing, greatly improving the productivity. . Common scissorsThere are three types of plate machines: flat shear, rolling shear and vibrating shear. Flat sheet metal roll forming machines shears are widely used. Most of the shears with shear thickness less than 10 mm are mechanically driven, and those larger than 10 mm are hydraulically driven. Generally, single or continuous metal cutting is carried out by pedal or button control. With the help of moving upper blade and fixed lower blade, the hydraulic plate shearer applies shear force to metal plates of various thickness by means of reasonable blade clearance, so that the plate can be broken and separated according to the required size. a plate shearer is a machine that uses a blade to cut a plate in a reciprocating linear motion relative to another blade. By means of a moving upper blade and a fixed lower blade, a reasonable blade clearance is used to exert shear force on metal plates of various thicknesses, so that the cnc h-beam beveling machine plates are fractured and separated according to the required size. Shears belong to a kind of forging machinery, the main role is metal processing industry. Plate shearing machine is a kind of shearing equipment widely used in machining. It can shear steel plate materials of various thickness. The commonly used plate shears are divided into flat shear, rolling shear and vibrating shear. The products are widely used in aviation, light industry, metallurgy, chemical industry, construction, ship, automobile, electric power, electrical appliances, decoration and other industries to provide special machinery and complete sets of equipment. After shearing, the shearing machine should be able to meet the requirements of straightness and parallelism of the shearing surface of the plate to be cut, and the distortion of the plate should be reduced as far as possible, so as to obtain high-quality workpieces. The upper blade of the shearing machine is fixed on the knife rest, and the lower blade is fixed on the workbench. The worktable is equipped with a support ball to facilitate the plate material in theIt doesn't get scratched when sliding on it. The back stop is used for plate positioning, and the position is adjusted by the motor. The pressing cylinder is used to compress the sheet metal to prevent the plate from moving during shearing. Guardrails are safety devices to prevent injuries. Generally, the return journey depends on nitrogen, which has high speed and small impact. the gap between the upper and lower blades of the brake type plate shears is indicated by the indicator board, which is convenient and quick to adjust. The safety protection device is interlocked by protective fence and electrical box. The advanced integrated hydraulic system has good reliability. Supporting system (optional) electrical control main electrical components are produced by Schneider. The blade is made of "Shangdao brand" blade (6CrW2Si) produced by Shanghai blade factory. The hydraulic pump adopts aerospace standard low noise internal gear pump NT3 series. The oil cylinder seal is produced by Waka company in Japan. E21 digital display and daily encoder are adopted. QC12K hydraulic plate shears of 3 M2 are all steel welding mechanism, hydraulic transmission, vibration stress relief, high strength and good rigidity. The hydraulic swing plate shears use the main cylinder (fixed on the wall panel) to do the downward shearing movement and the nitrogen cylinder returns. Therefore, the hydraulic system is simplified and the operation is more stable. In the process of shearing, the upper tool holder of the pendulum shear swings in an arc around a fixed axis and acts by lever.