FAQ of OG SERIES Press Brake

1. What is a down-acting CNC press brake?
   A down-acting CNC press brake is a metalworking machine that uses a hydraulic system to drive the lower table upward for bending, controlled by a CNC system to manage ram stroke, angle, and position. It is suitable for industries such as automotive, shipbuilding, and aerospace.

2. What are the main differences between down-acting and up-acting CNC press brakes?

   • Table movement direction: Down-acting: Lower table moves upward; Up-acting: Ram moves downward.

   • Control method: Down-acting: Servo motor + grating ruler for precise positioning; Up-acting: Motor-controlled screw tension.

   • Tool change speed: Down-acting: No return-to-origin required, higher efficiency.

   • Operator habits: Up-acting: Shorter table, suitable for small workpieces.

3. What is the working principle of a down-acting CNC press brake?
   High-pressure oil from a hydraulic pump drives the cylinder, pushing the lower table upward to bend the sheet metal. A grating ruler provides real-time feedback, and the CNC system adjusts parameters for high precision.

4. What are the core components of a down-acting CNC press brake?
   Includes a robust frame, high-precision hydraulic system, flexible tool change system, advanced CNC (e.g., NC9/NC10), inclined wedge deflection compensation, and rolling guide synchronization.

5. What materials are suitable for a down-acting CNC press brake?
   Mild steel, stainless steel, aluminum alloy, copper alloy, etc., typically 0.5–6mm thick (refer to equipment specs).

6. What is the processing accuracy of a down-acting CNC press brake?
   Positioning accuracy: ±0.02mm; Repeatability: ±0.02mm; Workpiece straightness: 0.3/m; Bending angle error: <±30′ (model-dependent).

7. Typical applications of down-acting CNC press brakes?
   Automotive (body parts), shipbuilding (hull structures), aerospace (aircraft components), power equipment (enclosures), appliances (housing forming), etc.

8. Operating procedure for a down-acting CNC press brake?

   1.   Check equipment status.

   2.   Input program commands.

   3. I Install tools.

   4.   Place sheet metal.

   5.   Start bending.

   6.   Remove workpiece.

   7.   Shut down equipment.

9. How to select the right model?
   Evaluate material, thickness, length, bend radius, accuracy, and efficiency. Examples:

   • 16-gauge, 10-foot mild steel: 50-ton free-bending model.

   • 1/4-inch, 10-foot sheet: ≥165-ton model.

10. Safety operating procedures?
    Wear PPE (gloves, safety shoes, goggles); avoid overload; prohibit tool adjustment during operation; check hydraulic oil, pressure gauge, and safety devices regularly.

11. Maintenance schedule?
    Hydraulic oil: Every 3 months; Filter: Every 6 months; Tools: Clean and inspect after each use; Electrical system: Annual inspection.

12. Common faults and solutions?

    • Ram won’t descend: Check slides, backstop shaft, pedal switch, proportional servo valve.

    • Inaccurate angle: Adjust Y-axis parameters, check hydraulic pressure.

    • Motor stops: Clean proportional valve, replace filter/oil.

13. Hydraulic system pressure range?
    Typically 20–33.8MPa (refer to model specs, e.g., XD-3512: 33.8MPa max).

14. How is backgauge functionality achieved?
    Servo motor drives backgauge mechanism, with grating ruler feedback for ±0.02mm repeatability.

15. Programming methods?
    Manual, graphical, CAD/CAM import; supports NC9, NC10, TP10S, etc.

16. Energy consumption?
    Motor power: 2.2–7.5kW (depends on model, process, and load).

17. Tool change steps?

    1.   Turn off pump.

    2.   Release clamps.

    3.   Remove old tool.

    4.   Install new tool and tighten.

    5.   Check alignment.

18. Environmental requirements?
    Temperature: 5–40°C; Humidity: ≤80%; Power: 380V±10%, 50Hz; Floor load: ≥1000kg/m².

19. Noise level?
    No-load: ≤75dB; Full-load: ≤85dB (complies with national standards).

20. Training content?
    Equipment structure, operation, safety, programming, tool maintenance, troubleshooting.

21. Warranty period?
    Typically 12 months; extended warranties (e.g., 24 months) available.

22. Suppliers?
    Domestic brands include Ningbo, Dongduan, AMADA (XD-3512), etc.

23. Price range?
    Small/medium: ¥100,000–¥500,000; Large: ¥500,000–¥2,000,000 (model/config-dependent).

24. Delivery lead time?
    Standard models: 30–60 days; Custom: Negotiable.

25. Transport methods?
    Truck or container shipping; ensure secure fastening and compliance with safety norms.

26. Installation and commissioning?

    1.   Foundation inspection.

    2.   Equipment positioning.

    3.   Hydraulic system (debugging).

    4.   Electrical wiring.

    5.   CNC parameter setup.

    6.   No-load test.

    7.   Load test.

27. Technical parameter lookup?
    Specs via manual, supplier website, or technical handbook (key: nominal force, table length, throat depth, tank capacity).

28. Spare parts supply?
    Suppliers stock common parts; emergency parts arrive in 48–72 hours via global logistics.

29. Upgrade services?
    CNC/hydraulic upgrades, tool library expansion, automation integration.

30. Certifications?
    ISO9001, CE, GB/T 14349 (Chinese mechanical safety standard).

FAQ Supplementary Section
31. Hydraulic oil standards?
      Anti-wear hydraulic oil (ISO VG46/68), viscosity index ≥95, meets ISO 6743-4.

32. Synchronization accuracy?
    Servo motor + grating ruler ensures ≤±0.01mm deviation.

33. Environmental adaptability?
    Some models support -10°C to 50°C; requires heaters/coolers for extreme temperatures.

34. Noise control?
    Silent pump, shock absorbers, sound enclosure, low-noise motor (no-load ≤70dB, full-load ≤80dB).

35. Electrical protection?
    IP54 rating; dust/waterproof components; leakage/overload protection.

36. Tool life factors?
    Material hardness, heat treatment, lubrication, bending cycles, and thickness. High-quality tools last >100,000 bends.

37. CNC programming languages?
    G-code, M-code, ASIST-G (Amada), 3D graphical programming.

38. Efficiency evaluation?
    UPH (units per hour) or bending length/hour (high-precision: 15–30 pieces/hour).

39. Energy efficiency rating?
    GB 30254-2013: Class 1: No-load ≤1.5kW, full-load ≤5kW.

40. Backgauge stroke range?
    300–3000mm; some models support infinite expansion (requires servo drive module).

41. Tool installation methods?
    Quick-clamp (QDC), hydraulic locking, manual bolting (QDC: ≤2 minutes).

42. Pressure fluctuation solution?
    Check proportional valve, accumulator, and oil cleanliness; use online filtration (≤10μm).

43. Safety devices?
    Light curtain, dual-hand buttons, E-stop, guardrails, hydraulic locking (EN 12622).

44. Software upgrade method?
    USB/Ethernet; supports OTA and local firmware updates.

45. Data storage capacity?
    ≥1GB internal; supports USB/SD card (1000+ programs, production data).

46. Remote monitoring?
    IIoT platform for status monitoring, fault alerts, and remote diagnostics.

47. Tool compensation technologies?
    Mechanical (wedge), hydraulic, CNC (±0.01mm accuracy).

48. Electrical cabinet cooling?
    Forced air/water cooling; ≤40°C, ≤60% humidity; replaceable filters.

49. Hydraulic leak detection?
    Pressure sensor monitors drop rate; fluorescent dye locates leaks.

50. Workpiece positioning accuracy?
    Laser alignment, vision positioning, servo closed-loop control (±0.005mm).

51. Backgauge repeatability?
    High-precision ball screw and encoder (≤±0.01mm).

52. Tool cooling methods?
    Air, water, or oil cooling; water systems include antifreeze and thermostat.

53. Electrical component brands?
    Siemens (PLC/servo), Schneider (breaker), Omron (sensor), Mitsubishi (inverter).

54. Hydraulic rust prevention?
    Internal tank coating, rust inhibitors in oil; drain oil during long shutdowns.

55. CNC interfaces?
    Ethernet, RS232/485, USB, CAN bus; supports MES/ERP integration.

56. Hydraulic oil temperature range?
    30–50°C; maintain stability with coolers/heaters.

57. Safety door design?
    Transparent acrylic, electric/pneumatic operation, anti-pinch function.

58. Tool wear detection?
    Thickness gauge, roughness meter, vision system.

59. Electrical lightning protection?
    Three-level surge protector (power/signal/ground); ground resistance ≤4Ω.

60. Hydraulic air bleeding?
    Open exhaust valve during pump startup until no bubbles; repeat 3–5 times.

FAQ Advanced Section
61. CNC multi-axis linkage?
       High-precision servo drive + motion control card; supports X/Y/Z/R (≤±0.02mm trajectory error).

62. Overheating prevention?
    Air/water-cooled heat exchanger; activates at 55°C (≥50L/min flow).

63. Tool material options?
    Cr12MoV, SKD11, H13; HRC58-62; Ti/nitride coatings.

64. Electrical cabinet upgrade?
    Optional IP65 rating for dust/water resistance.

65. Pressure adjustment range?
    10–25MPa; some models offer 12/16/20MPa tiers.

66. Backgauge calibration?
    Laser interferometer or micrometer; adjust screw preload and encoder zero.

67. Industrial protocols?
    EtherCAT, Profinet, Modbus TCP, OPC UA; supports Industry 4.0.

68. Oil change interval?
    Every 2000–3000 hours (based on acidity, viscosity, metal particles).

69. Tool eccentricity detection?
    Pressure sensors monitor cylinder differential; alerts at >5% deviation.

70. EMI protection?
    Shielded twisted-pair cables; EMI filters; ground resistance ≤1Ω.

71. Cavitation prevention?
    Tank above pump; suction line filter; oil viscosity ≥22cSt.

72. Backgauge accuracy?
    0.001mm grating ruler + closed-loop servo (≤±0.008mm repeatability).

73. Tool surface treatment?
    Hard chrome, PVD, or DLC coatings for wear/corrosion resistance.

74. Cabinet cooling?
    Axial fan (≥200CFM) + heat exchanger; ≤45°C.

75. Oil contamination prevention?
    Air filter on tank; ≤5μm filtration; replace filter regularly.

76. Tool library management?
    RFID/QR codes match tools to bending parameters.

77. Pressure stabilization?
    Proportional relief valve + accumulator (≤±0.5MPa fluctuation).

78. Backgauge speed control?
    Servo motor + lead screw (max 100mm/s).

79. Lightning surge protection?
    Three-level SPD (≥40kA discharge current).

80. Hydraulic shock prevention?
    Cushioning at valves/cylinders; extend switching time to 0.2–0.5s.

81. Tool installation accuracy?
    Dowel pins + quick-clamp (≤±0.02mm).

82. Dust prevention?
    Positive pressure filtration; ≥50Pa cabinet pressure; filter replacement ≤3 months.

83. Oil emulsification prevention?
    Condensation-free tank design; ≤200ppm water content.

84. Remote maintenance?
    VPN/4G/5G for parameter adjustment and diagnostics.

85. Pressure sensor accuracy?
    0.1%FS; response time ≤10ms.

86. Backgauge error compensation?
    CNC algorithm corrects screw pitch and thermal deformation.

87. ESD protection?
    Anti-static packaging; operators wear wrist straps.

88. Oil oxidation prevention?
    Antioxidants in oil; stainless steel/galvanized tank.

89. Multilingual support?
    Software interface for 10+ languages (CN/EN/DE/JP).

90. Oil leakage prevention?
    O-ring seals; polyurethane/FKM cylinder seals.

91. Repeatability testing?
    Laser tracker or grating ruler; 10 measurements averaged.

92. Overheat protection?
    IGBT heat sink + fan; reduces frequency above 80°C.

93. Oil foaming prevention?
    Vortex-free tank design; defoamed oil; air release ≤5min.

This article covers all 93 FAQs, maintaining technical accuracy and terminology consistency.