Standard Debug Specification For Servo Press Machine Pressure & Stroke Of Thin Sheet, Compatible With Full S/SO/FHS/CLS Press-fit Parts

Standard Debug Specification For Servo Press Machine Pressure & Stroke Of Thin Sheet, Compatible With Full S/SO/FHS/CLS Press-fit Parts

CNC servo press machine is core equipment for mass production of embedded fasteners for precision thin sheets. Parameters including pressure, stroke and holding time directly determine pull-out and anti-torsion mechanical performance after pressing. Most sheet metal factories rely on experience for parameter adjustment without standardized procedures when switching sheet thickness or part models, resulting in mass defects such as sheet bulging, thread cracking and loose riveting. All debugging parameters and judgment standards in this article are based on industrial standards for sheet metal servo equipment, with fixed parameter ranges divided by press-fit model, sheet material and thickness, providing standardized calibration steps for model switching.

1. Standard Assembly Parameter Comparison Table For Mainstream Press-fit Models

2. Four-step Standard Calibration Process For Model Switching

1. Mold Alignment Calibration: Replace matched upper punch and lower die, calibrate coaxiality with deviation no more than 0.02mm to prevent partial sheet bulging caused by unbalanced force. 2. Basic Parameter Input: Input standard pressure and stroke from table according to sheet thickness and part model, take middle value of range for initial setting, do not reuse parameters of other models directly. 3. First Article Trial Press Verification: Test one piece with same batch standard sheet, check fully flush surface without back bulging, measure press-in depth within tolerance range. 4. Mechanical Sampling Recheck: Complete pull-out and anti-torsion test for first article, mass production allowed only if indexes reach standard; slightly raise pressure if pull-out force is insufficient, reduce rated pressure by 10% and retest if sheet bulging occurs.

3. Four Common Debug Fault Causes & Rectification Plans

1. Severe back bulging of sheet: Excessive rated pressure & long holding time; Rectify: Reduce pressure by 0.5~1kN, shorten holding time by 0.1~0.2s, adopt larger flange press-fit model for ultra-thin sheets. 2. Pull-out failure & insufficient pull-out force: Insufficient pressure & shallow press-in depth; Rectify: Increase rated pressure, extend stroke, check wear and collapse of lower die support pad. 3. Cracked thread entry & thread stripping: Coaxial offset of punch, stroke overrun hitting thread end face; Rectify: Recalibrate mold coaxiality, lower stroke upper limit, add buffer deceleration zone. 4. Fluctuating mechanical performance within batch: Unstable equipment pressure output & air source pressure fluctuation; Rectify: Install stabilized air storage tank, calibrate servo pressure sensor every 8 hours, perform zero calibration daily.

4. Daily Equipment Inspection Requirements For Mass Production

Re-measure press-in depth for 5 pieces every 2 hours; Re-do mechanical verification for first article after sheet or model switching; Clean mold debris after daily production to avoid parameter drift caused by raised sheet height. For stainless press-fit parts matched with outdoor energy storage cabinets, add short-term salt spray screening at shift end to eliminate hidden rust risks from surface scratches.