As a core device in the field of metal sheet processing, the pendulum shearing machine is widely used in industries such as machinery manufacturing, the automotive industry, and shipbuilding, thanks to its high - efficiency shearing force and precise processing performance. This article will systematically analyze the technical characteristics of the pendulum shearing machine from the perspectives of equipment structure, working principle, performance advantages, and key points of use.

 

I. Analysis of Equipment Structure and Function

1. High - strength Frame: The whole frame adopts the full - steel welding process and combines high - temperature annealing to eliminate internal stress, ensuring the rigidity and stability of the machine body. Some high - end models are processed and formed at one time by a floor boring and milling machine, further improving the structural accuracy.

2. Hydraulic Drive System: The integrated hydraulic logic circuit controls the movement of the tool holder, and is equipped with a sequence valve to achieve low - noise and smooth shearing. The core hydraulic components use high - precision imported valve groups to ensure the long - term reliable operation of the system.

3. Tool Holder and Shearing Mechanism: The upper tool holder adopts an arc design and completes the shearing action through the arc swing around a fixed axis. It is matched with the four - edge replaceable design of the rectangular lower blade to extend the service life of the blade. The blade clearance supports stepless adjustment to meet the needs of sheets of different thicknesses and materials.

4. CNC Material Pressing Device: The independent parallel pressing cylinders can automatically adjust the pressing force according to the flatness of the sheet to avoid damage to the sheet surface. At the same time, it is equipped with a feeding ball device to reduce friction and improve the feeding efficiency.

 

II. Process Flow and Core Technology

1. Intelligent Operation Process:

   - The sheet is accurately placed through the rear stop positioning device, and the CNC system displays the shearing parameters in real - time;

   - The hydraulic material pressing mechanism adapts to the sheet surface and dynamically adjusts the pressing force;

   - The nitrogen cylinder drives the tool holder to return quickly, shortening the single shearing cycle by 30% and supporting the segmented shearing mode.

2. Precision Control Technology:

   - It uses precision ball screws and linear guides, and cooperates with the digital display system to achieve a repeated positioning accuracy of ±0.1mm;

   - The light projection alignment device assists the operator to calibrate the shearing line and reduce human errors.

 

III. Industrial Applications and Performance Advantages

1. Multi - field Applicability:

   - Automotive Manufacturing: Efficiently cut high - strength steel plates and aluminum alloy components;

   - Shipbuilding Industry: Process large - scale metal sheets with a thickness of more than 8mm;

   - Construction Engineering: Accurately shear steel structure accessories with smooth edges that do not require secondary processing.

2. Core Performance Advantages:

   - Improved Shearing Force: The bidirectional hydraulic drive design increases the shearing force by 20% compared with traditional models, and can process sheets with a maximum width of 2500mm;

   - Intelligent Maintenance Function: It is equipped with a built - in shearing counting module and a fault diagnosis system to reduce the cost of manual maintenance;

   - Upgraded Safety Protection: The electrical interlocking protective grille and the photoelectric induction device form a double safety barrier, meeting the safety standards of Industry 4.0.

 

IV. Usage Specifications and Maintenance Suggestions

1. Operation Specifications:

   - Before starting, check the hydraulic oil level and blade clearance. Over - load shearing of cemented carbide materials is strictly prohibited;

   - Modification of the CNC system parameters should be carried out by professional technicians to avoid equipment failures caused by misoperation.

2. Regular Maintenance:

   - Replace the hydraulic oil filter element every 500 hours and detect the wear of the guide rails quarterly;

   - The blade edge needs to be ground and repaired regularly, and the clearance adjustment follows the conversion formula of material thickness.

 

Through scientific selection and standardized operation, the pendulum shearing machine can significantly improve the efficiency of metal sheet processing and reduce the reject rate. When purchasing, enterprises need to combine production requirements and material characteristics, and give priority to the numerical control degree and safety protection level of the equipment to achieve long - term and stable production benefits.