Customized hydraulic Shearing Machine Automatic Sheet supporting Feeding worktable

Machine use

Front-feeding pendulum shears are widely used in machinery manufacturing, automobiles, shipbuilding, container manufacturing, metal structures, boiler containers, household appliances, light industry and other manufacturing industries. The introduction of advanced European technology is suitable for cutting steel plates of specified thickness and width. When the strength of the material to be sheared is high, the thickness of the material to be sheared should be reduced, and a blade of better material should be used.

Machine characteristics

1. Adopt European-style model,
2. Adopt ESTUN special CNC system for shearing machine, easy to operate and easy to learn. The CNC system can automatically control the backgauge, cutting angle, blade gap, cutting stroke and processing quantity. Increase productivity.

 3. The CNC front feeding is connected with the shearing machine to realize fully automated production and improve the precision of shearing. The hidden safety hazards of manual feeding are reduced and the labor intensity of manual handling is high. It will not scratch the surface of the product, improve the quality of the product, and is also suitable for mass production.

4. The backgauge is driven by precision linear guide and ball screw, which has higher speed and larger working stroke, which broadens the processing range of the machine and improves production efficiency.

5. Using BOSCH-REXROTH integrated hydraulic valve stack, reliable performance. The tandem cylinder synchronization system makes the force of the machine tool uniform.

6. A three-point supporting roller guide is adopted to make the tool post move without gap between the rollers, the blade gap is stable and reliable, and the processing quality of the workpiece is improved.

7. The fixedly installed lower blade and adjustable upper blade facilitate the adjustment of the blade gap uniformity and save the time for tool change and maintenance.

8. With the standard configuration of auxiliary positioning rear material, it can prevent the plate from sagging and improve the processing accuracy of thin plates and large-size plates.

The main structure

This shearing machine is mainly composed of frame, tool rest, back gauge, back support, hydraulic system, pressing device and electrical system.

1. The frame adopts a steel plate welded structure, which is welded into a frame-shaped structure from the left and right wall panels, worktables, press beams and cross beams, which has good rigidity. The left and right oil cylinders are respectively installed on the supports on the left and right wall panels and the upper part of the pressing beam, and the lower blade is fixed on the workbench. The left side of the worktable is equipped with a lateral stopper mechanism (with front stopper mechanism), and the stopper is positioned and counted by a ruler. The verticality of the lateral stopper and the lower knife edge can be adjusted by the set screw under the support arm.

2. The main body of the tool holder is a welded assembly with sufficient rigidity. A three-point roller guide rail is used to support the tool holder. The tool holder is connected to the piston rod of the oil cylinder and makes a reciprocating linear motion between the guide rails. The rear two fulcrums are fixed on the wall plate, and the front fulcrum is the disc spring roller bearing, which is fixed on the pressing beam, so that the tool holder is always attached to the rear two fulcrums. The blade gap adjustment mechanism is a worm gear reducer, which drives the upper fulcrum to rotate eccentrically, so that the tool holder makes a slight rotation on the lower fulcrum, thereby changing the value of the blade gap.

3. The back gauge is installed on the bottom plate of the knife holder and moves up and down with the knife 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 entire stopper device is counted by the numerical control system, positioning is accurate and reliable, and easy to operate. The adjustment range of the back gauge is 10~1000mm. Note: When pushing the sheet to the baffle during positioning, lean against the baffle lightly to ensure the positioning accuracy, otherwise it will affect its positioning accuracy.

4. The rear supporting material is installed on the back side of the workbench of the frame, which mainly serves as an auxiliary positioning function to prevent the plate from sagging and cause the plate size error. The rear supporting material is mainly composed of an air cylinder, a synchronous shaft and a supporting arm. The support arm rises before cutting, and after the positioning is completed, the support arm flips and falls, and the sheared material slides down the surface of the shield. Rear support range: the width of the cut sheet is 500~3050mm, and the length is 350~1050mm.

• The hydraulic system is installed on the support at the back of the frame, and is mainly composed of the main motor, oil pump, valve stack and oil tank. The BOSCH-REXROTH integrated hydraulic valve stack is used to enhance the stability and reliability of the hydraulic system. The use of American EMB high-pressure hose assembly and card sleeve type joints improves the cleanliness of the hydraulic oil. 6. The material pressing device is mainly composed of a group of material pressing cylinders installed on the material pressing beam of the frame. After the pressure cylinder is filled with oil, it acts on the plunger rod to move downward against the spring force to compress the sheet. After the shearing is completed, the plunger rod is reset by means of spring force. The size of the pressing force increases with the increase of the thickness of the cut sheet. The pressing force of the machine tool is set to 0, I, and II from small to large. The user can according to the actual material and thickness of the cut sheet. The situation adjusts itself. When cutting a long and narrow sheet with the largest thickness, the pressing force must be adjusted to the maximum. At least 2-3 pressing oil cylinders can press the sheet before cutting. There is a fixed protective fence in front of the pressing cylinder to ensure that the operator’s fingers will not stick into the knife edge when operating the machine. 7. The electrical system adopts the special numerical control system of ESTUN company’s shearing machine. The numerical control system and all operating buttons are installed on the electrical cabinet on the left wall panel, and a foot switch is provided.