The hydraulic shearing machine is mainly used for cutting and blanking of metal plates, and adopts numerical control feeding. Only need to input the required cutting width through the touch screen, the required size specification can be automatically cut out, and the cutting precision and cutting efficiency can be improved. The whole machine adopts an all-steel welded structure, and the welded parts such as wall panels, worktables, and tool rests vibrate to eliminate stress, and have good rigidity and stability. This machine tool is suitable for shearing all kinds of steel plates, copper plates, aluminum plates and non-metallic material plates whose thickness is the rated value of the machine tool, and it needs to be materials without hard marks, welding slag, slag inclusion and welding seam, and no excessive thickness is allowed.
After shearing, the straightness and parallelism of the shearing surface of the sheared sheet should be guaranteed, and the distortion of the sheet should be minimized to obtain high-quality workpieces. The upper blade of the shearing board is fixed on the Taoist, and the lower blade is fixed on the workbench. A material support ball is installed on the worktable, so that the sheet will not be scratched when sliding on it. The back gauge is used to fix the sheet, and the position is adjusted by a motor. The pressing cylinder is used to press the sheet to prevent the sheet from moving during shearing. Guardrails are safety devices to prevent industrial accidents. The return journey generally relies on nitrogen, which is fast and has low impact.
The correct shearing method of the hydraulic shearing machine should be to press the sheet material during shearing. It is equipped with a pressing device controlled by a cam lever mechanism to ensure that the pressing force remains unchanged during the shearing process. The server has a spring for cushioning. The unloading length is controlled by the back gauge device at two points. Adjusted by the handwheel, the handle is fixed. Each point is equipped with emblem to control the slope of the blanking. When the blanking length exceeds the control range of the back gauge, the back gauge can be removed to allow the unrestricted passage of the sheet. For sheets of different thicknesses, the edge clearance is different. When adjusting the cutting edge clearance, rotate the flywheel by hand to make the upper tool rest reach the bottom dead center, loosen the screws that fix the blade on the worktable, determine the clearance value according to the thickness of the shearing plate, and measure the entire length of the cutting edge with a feeler gauge. At this time, the vibrating flywheel makes the upper tool holder move up and down several times, gradually tighten the bolts and nuts, and adjust the cutting edge clearance until the required value is reached.
Correct installation method of CNC shearing machine
The frame of the CNC shearing machine adopts a steel plate welded structure, which is welded into a frame-shaped structure from the left and right wall panels, the workbench, the pressing beam and the beam, which has good rigidity. The left and right oil cylinders are respectively installed on the left and right wall panels and the upper support of the pressing beam, and the lower blade is fixed on the worktable. The left side of the worktable is equipped with a lateral stopper mechanism (with a front stopper mechanism), the stopper is positioned and counted with a ruler. The verticality between the lateral block and the lower knife edge can be adjusted by the set screw under the material support arm.
The main body of the tool holder is a welded assembly with sufficient rigidity. Three fulcrum roller guide rails are used to support the tool rest, the tool rest is connected to the piston rod of the oil cylinder, and reciprocates linearly between the guide rails. The rear two fulcrums are fixed on the wall plate, and the front fulcrum is the disc spring roller support, which is fixed on the pressing beam, so that the tool rest always fits on the rear two fulcrums. The cutting edge clearance adjustment mechanism is a worm gear reducer, which drives the upper fulcrum to rotate eccentrically, so that the tool holder rotates slightly on the lower fulcrum, thereby changing the cutting edge clearance value.
The back gauge is installed on the bottom plate of the tool holder and moves up and down with the tool holder. The back gauge is driven by a servo motor, and is driven by a synchronous belt and a ball screw pair to drive the gauge frame to move back and forth on the linear guide. The whole stopper is counted by the numerical control system, the positioning is accurate and reliable, and the operation is convenient. The adjustment range of the back gauge is 10~1000mm.
Note: When pushing the sheet material to the baffle plate during positioning, lean against the baffle plate to ensure the positioning accuracy, otherwise it will affect the positioning accuracy.
The correct installation method of CNC shearing machine:
The installation accuracy of the machine tool will directly affect the performance of the machine tool, so the installation of this machine tool must be carried out by professionals (or the manufacturer sends someone to the scene). The machine tool must be installed on a stable and hard foundation, and the ground of the working area must be covered with a thick concrete layer and leveled (flatness 2mm/m) according to the requirements of the foundation drawing. Fifteen days before installation, the user can dig the foundation according to the foundation diagram in the manual, water the machine base, reserve four installation holes for anchor bolts, and pay attention to placing the four pads in the specified positions, and install the machine after the machine is seated. Anchor screws for secondary grouting. After the cement is completely solidified, adjust the level of the machine through the support screws and pads, and then adjust the level of the work surface.
When adjusting the level of the working surface, remove the platen with a steel ball in the middle of the working closure, place the level on the raised processing surface of the workbench, and use the left and right support screws on the front side of the machine tool to adjust the horizontal direction of the machine tool. Level; then place the level vertically, and use the left and right support screws on the back of the machine tool to adjust the longitudinal level of the machine tool. Its horizontal and vertical levels should be controlled within 1000:0.2mm.