Zhenghao Youbang Heavy Industry: Analysis of Structure and Process Technology for Closed Double-Point Pneumatic Presses
Zhenghao Youbang Heavy Industry: Analysis of Structure and Process Technology for Closed Double-Point Pneumatic Presses
InPrecision stamping equipment, metal forming machinery, pneumatic pressesIn the process of industry iteration,Closed two-point pneumatic pressFeaturing a closed full-frame rigid structure, dual-crankshaft balanced transmission, and pneumatic clutch-brake system, it has becomeAutomotive parts, home appliance sheet metal, precision hardware, and new energy accessoriesThe core equipment for large-scale stamping production. Shanghai Zhenghaoyoubang Heavy Industry Machinery Co., Ltd. is based in the Yangtze River Delta equipment manufacturing industry chain, with deep expertise.Hydraulic Press Brake, Closed-Type Pneumatic Press, Plate Rolling Machine, CNC Bending MachineYears of R&D and manufacturing expertise, leveraging a multidisciplinary team in mechanical, hydraulic, and electronic control systems. We have optimized the overall structure and internal control system of our closed double-action pneumatic presses, delivering key process improvements focused on stamping precision, operational stability, and automation compatibility—tailored to meet the real-world demands of precision stamping across diverse domestic industries.
Closed Two-Point Pneumatic Press Machine
Closed Two-Point Press Frame
1. Chassis Architecture: Closed-frame design for enhanced rigidity
Closed Double-Point Pneumatic PressUnlike open C-frame presses, the entire machine features a fully enclosed welded box-type frame, which is the core structural advantage of this model. The closed two-point pneumatic press frames in Zhenghao Youbang's self-developed series are selected using...Q355B thickened steel plate, integrated welded and formedAfter welding, the unit undergoes dual stress-relief treatment via overall tempering and vibration aging to eliminate residual welding stresses, preventing body deformation and accuracy drift during long-term heavy-load stamping operations.
The device adoptsDual-point symmetric drive layoutTwo eccentric cranks are arranged in parallel on the left and right sides. Connecting rods evenly distribute the stamping load on the slide, effectively canceling out lateral torsion caused by unilateral stamping. This enhances the equipment's resistance to uneven loads, making it ideal for multi-station progressive die continuous stamping operations. The machine frame is validated through finite element mechanical simulation, achieving a rigidity coefficient that meets top industry standards. Under prolonged high-volume production conditions, frame deformation error remains below 0.015mm, ensuring dimensional consistency of stamped parts from the hardware foundation.Precision Closed-Frame PressThe critical prerequisite for achieving long-term, high-precision operation.
II. Drive and Pneumatic Systems: Integrated Clutch-Brake for Optimized Stamping Power Logic
1. Double-crank gear transmission system
The Zhenghao Aibang closed single-action pneumatic press features a reverse eccentric gear drive. High-speed gears use herringbone precision machining, while low-speed gears undergo grinding and quenching treatment for minimal backlash, reduced vibration, and higher transmission efficiency. Dual crankshafts rotate synchronously in opposite directions, canceling out inertial forces during operation. Compared to single-point presses, overall machine vibration is reduced by 40%, lowering workshop noise and extending the service life of wear-prone components like gears and bearings. Transmission parts are made from 42CrMo alloy steel, forged and heat-treated with quenching; gear surface hardness reaches HRC52 or higher, designed for high-frequency continuous stamping operations.
2. Dry Pneumatic Clutch and Brake Assembly
AsPneumatic PressSignature core component: an integrated dry pneumatic clutch-brake module with high torque, standard on all units. Featuring a dual-valve interlock pneumatic control system, it delivers rapid clutch engagement and braking to eliminate double-stroke and mis-stroke faults. Pneumatic actuation ensures fast and precise clutch coupling and disengagement. Compared to traditional mechanical rigid clutches, it offers more flexible start-stop control and supports three operational modes—jog, single stroke, and continuous—adapting seamlessly to mold trials, small-batch prototyping, and high-volume mass production. The complete pneumatic circuit includes oil-water filtration and pressure regulation components that remove impurities from compressed air, preventing valve corrosion and sticking while reducing maintenance frequency. This design aligns with the industry trend toward energy-efficient stamping equipment.
3. Slider Guidance and Safety Protection Technology: Precision Control Across the Full Stroke, Overload Prevention Throughout the Entire Link
1. Octagonal ultra-long rail slider structure
The slider usesFour-sided, eight-directional guide railDesigned with an extended guide stroke, the slider maintains full contact with the guide rails throughout its travel. This ensures zero shake or misalignment during both the downstroke and return stroke, keeping parallelism within ±0.02mm. It meets processing requirements for thin-sheet stretching, thick-sheet punching, and precision blanking. The slider features a built-in electric die height adjustment mechanism paired with a digital display for precise closure height tuning, enabling quick adaptation to different die thicknesses and reducing changeover time. An optional balancing cylinder can be added to counteract the slider's weight, further enhancing press stability. Ideal for high-endCNC Closed-Frame PressPopular configuration options.
2. Multi-layer Security Configuration
Standard equipment for each closed single-action pneumatic pressBuilt-in hydraulic overload protection deviceWhen stamping load exceeds rated tonnage, the hydraulic valve instantly releases pressure and the equipment triggers an emergency stop to protect the frame, crankshaft, and dies from damage. An infrared safety light curtain is installed on the front of the frame; if material enters the stamping area by mistake, it automatically cuts off the clutch air supply and locks the slide descent. The control system uses a dual-loop PLC safety design with dual-s行程 anti-misstroke solenoid valves and emergency stop interlock circuits, establishing a three-layer protection system (mechanical, hydraulic, electrical) that complies with domestic stamping equipment safety standards.
4. Lubrication and Electrical Control Systems: Intelligent Maintenance, Compatible with Automated Production Lines
1. Forced forced oil circulation lubrication system
Key transmission points, guide rails, and bearing locations are integrated into a centralized forced lubrication system with precise oil delivery. Equipped with an oil pressure monitoring and alarm module, the system automatically displays pop-up alerts for blockages or low oil levels to prevent dry friction and component wear. This enables automated lubrication management and reduces manual oiling workload.
2. Standardized Electronic Control Expansion Interface
The Zhenghao Youbang closed-frame double-action pneumatic press features an integrated PLC + HMI control system. The touchscreen provides real-time visibility of key operating data, including press stroke count, fault codes, and air pressure. With预留 automation expansion interfaces, the press seamlessly integrates with NC servo feeders, decoilers/levelers, robotic manipulators, and quick die-change systems to rapidly establish fully automated stamping lines, adaptable toAutomotive stampings, home appliance enclosures, and new energy sheet metal partsAssembly line production requirements; also the top choice for current automated stamping workshops.Closed-type Pressimportant reason.
5. Multi-Industry Deployment Scenarios
Leveraging its structural rigidity and precision, Zhenghao Yibang's closed two-point pneumatic press serves China's mainstream stamping sectors. Key applications include:
Automotive Parts ManufacturingBody structural components, chassis brackets, wheel hub shims, and interior metal clips: blanking and forming for multi-station progressive die production; standard heavy-duty stamping equipment in automotive stamping shops.
Home Appliance ManufacturingRefrigerator side panels, air conditioner brackets, washing machine bases, and kitchen/bath hardware shell punching and stretching; stable and controllable for mass production.
Precision Electronics & New EnergyLithium battery tabs, communication device shielding cans, and PV bracket accessories precision stamping to meet tight tolerances for small components.
General Hardware and Construction MachineryBlank fasteners, small sheet metal parts for construction machinery, and architectural hardware components; handles both thick-plate stamping and thin-precision blanking.
6. Technology Iteration and Product Development Direction
Accompanying domesticIntelligent Manufacturing: Localization of Sheet Metal EquipmentMarket trendsEnergy-saving closed-die pneumatic press, automated stamping equipmentDemand continues to surge. Zhenghao Youbang Heavy Industry remains focused on advancing closed two-point pneumatic press technology. Future R&D efforts will center on three key areas: servo-pneumatic hybrid drive, energy efficiency optimization, and digital connectivity. Building on the proven closed-frame body and two-point transmission architecture, we are optimizing pneumatic energy ratios and equipping machines with remote data acquisition modules to enable cloud-based stamping data analytics and remote troubleshooting.
Leveraging Shanghai's strategic location, the company has strengthened its capability for non-standard equipment customization. We offer closed two-point pneumatic presses with tailored worktable dimensions and nominal force specifications, aligned with your sheet metal material, press tonnage requirements, and workshop automation plans. Our end-to-end support includes pre-sales process calculations and equipment selection guidance, mid-sales implementation tracking, and post-sales installation, commissioning, and operator training—helping downstream manufacturers optimize stamping processes, reduce costs, and boost efficiency.