{"id":4216,"date":"2025-12-17T11:29:25","date_gmt":"2025-12-17T11:29:25","guid":{"rendered":"https:\/\/camtinc.com\/?p=4216"},"modified":"2025-12-17T11:31:04","modified_gmt":"2025-12-17T11:31:04","slug":"e21-press-brake-system-operation-manual","status":"publish","type":"post","link":"https:\/\/camtinc.com\/es\/e21-press-brake-system-operation-manual\/","title":{"rendered":"E21 Press Brake System Operation Manual"},"content":{"rendered":"
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E21 Press Brake System Operation Manual<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
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Harmon Tech E21 press brake controller is a reliable and cost-effective NC system commonly used in torsion bar hydraulic press brakes. It provides precise control over the Y-axis (ram depth for bending angle) and X-axis (back gauge positioning), making it ideal for sheet metal bending operations. This guide offers a professional, step-by-step explanation of the E21 system operation, helping operators achieve accurate bends while addressing common issues.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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I. Operation Procedure of E21 Press Brake<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Power-On Preparation<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Before starting the E21 press brake, perform these essential checks to ensure safe and efficient operation:<\/p>

  • Verify the power supply: 380V three-phase electricity, stable and properly grounded.<\/li>
  • Check the air source pressure: Maintain 0.6-0.8 MPa with no leaks.<\/li>
  • Inspect hydraulic oil level: It should be above the marked line; use anti-wear hydraulic oil (e.g., ISO VG 46). Monitor oil temperature (optimal 40-60\u00b0C).<\/li>
  • Look for leaks: No oil or air leakage in the hydraulic system or connections.<\/li>
  • Start the E21 controller: Power on the system. It performs a self-check (1-2 minutes). The LCD screen should display normally without error codes (common alarms include issues with axes or sensors).<\/li>
  • Manual jog mode: Run the ram (slide block) unloaded 2-3 times in jog mode. Observe for smooth movement, no sticking, unusual noise, or vibration.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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    Program Input and Debugging<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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    The E21 system supports single-step and multi-step programming (up to 40 programs, 25 steps each). Import programs via USB (.NC format) or manually input parameters.<\/p>


    Key parameters include:<\/p>

    • Y-axis: Ram depth (controls bending angle).<\/li>
    • X-axis: Back gauge position.<\/li>
    • Pressure: Tonnage based on material thickness (e.g., 200 tons for 10mm mild steel).<\/li>
    • Dwell time: 3-5 seconds for torsion bar machines to allow full bending.<\/li>
    • Retract: Back gauge retraction distance and delay.<\/li><\/ul>

      \u00a0<\/p>

      Example for 10mm mild steel to 90\u00b0:<\/p>

      • Pressure: ~200 tons (calculate using bending force charts).<\/li>
      • Ram stroke: ~250mm.<\/li>
      • Angle tolerance: \u00b10.5\u00b0.<\/li><\/ul>


        Perform a trial bend:<\/p>

        • Use scrap material.<\/li>
        • Measure the angle with a digital protractor.<\/li>
        • If error > \u00b11\u00b0, adjust Y-axis depth (deeper for smaller angle) or pressure.<\/li><\/ul>


          Processing Execution<\/p>

          • Place the sheet on the lower die and align with back gauge (tolerance \u22640.5mm).<\/li>
          • Step on the foot pedal to initiate bending.<\/li>
          • During operation: Never reach into the die area while the ram is descending. Maintain \u2265500mm safety distance.<\/li>
          • For batch production: Inspect one piece every 10 bends for dimensional accuracy, as tool wear can cause deviations.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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