Daily maintenance guide for visual labeling machine screw servo module: dual guarantee of accuracy and service life

1、 The core function and maintenance necessity of screw servo module

The screw servo module is the "precision motion core" of Longhai Huanyu Vision Labeling Machine. It achieves a positioning accuracy of ± 0.01mm and high-speed labeling of 200-1200 times/minute through the coordinated control of ball screws and servo motors. According to statistics,70% of label position deviationand50% of mechanical failuresDue to improper maintenance of the screw servo system. Scientific daily maintenance can extend module life by more than 30% and reduce maintenance costs by 40%.

2、 Comparison of Types and Advantages/Disadvantages of Daily Maintenance Plans

1. Preventive maintenance (time driven)

• Cycle setting：

  • Daily basic check

  • Weekly lubrication supplement

  • Monthly accuracy calibration

• advantageLow cost (average annual ¥ 2000/unit), easy to operate

• shortcomingPossible over maintenance (increased spare parts loss by 10-15%)

• Applicable scenariosStandardized production line and workshop with stable environment

2. Predictive maintenance (data-driven)

• technical support：

  • Vibration sensor monitors abnormal screw (frequency range 10-500Hz)

  • Current fluctuation analysis of servo motor load (threshold ± 15%)

  • Temperature sensor warning for overheating (>60 ℃ alarm)

• advantageFault prediction accuracy ≥ 85%, spare parts utilization rate increased by 30%

• shortcomingInvestment required for monitoring system (approximately ¥ 15000 per unit)

• Applicable scenariosHigh precision electronic labeling, 24-hour continuous production

3. Emergency maintenance (faulty drive)

• trigger condition: Occurrence of position deviation (＞± 0.1mm), abnormal noise or jamming

• cost riskA single repair cost of ¥ 50-20000, and production downtime losses can reach ¥ 100000 per day

• Applicable scenariosSmall and medium-sized enterprises with outdated equipment or limited budgets

3、 Core steps for maintenance of screw servo module

1. Maintenance of ball screw

lubrication management

• Oil selection：

  operating condition	Recommended types of oils and fats	Replenishment cycle
  Room temperature clean environment	ISO VG32 lithium grease	Every 200 hours
  High temperature/high load	Polyurea based high-temperature grease	Every 100 hours
  Food and pharmaceutical industry	NSF H1 certified food grade grease	Every 150 hours

• Oil injection method：

  1. Remove old grease (non-woven fabric specific cleaning agent)

  2. Fill quantitatively with an oil gun (oil content accounts for 30-40% of the track space)

Wear detection

• radial clearance: Micrometer measurement (allowable value<0.02mm)

• surface scratchWhite light interferometer detection (safe for depths<3 μ m)

2. Maintenance of servo motors

• Daily inspection items：

  • Loose encoder connection wire (torque 0.6-0.8N · m)

  • Cooling fan speed (2000-4000rpm)

  • Motor temperature rise (normal within an ambient temperature of 40 ℃)

• Deep maintenance：

  • Disassemble and clean electric brush dust annually (explosion-proof vacuum cleaner)

  • Insulation resistance test (≥ 100M Ω @ 500V DC)

3. Couplings and guide rails

• Coaxiality calibrationLaser alignment instrument adjustment (deviation<0.05mm/m)

• Guide rail cleaning：

  • Scrap board cleaning (once a day)

  • Sealing inspection of dust cover (airtightness test pressure 50kPa)

4、 Selection of maintenance plan and industry adaptation

1. Industry customized solutions

2. Equipment type matching

• High speed models (>800 times/minute)：

  • Adopting an oil air lubrication system (fuel consumption of 0.05mL/hour)

  • Check the temperature rise of the screw every month (adjust the pre tightening force if it exceeds 5 ℃)

• High precision model (± 0.01mm)：

  • Constant temperature workshop (20 ± 1 ℃)

  • Weekly laser interferometer calibration (compensating for thermal expansion errors)

5、 Analysis of Maintenance Costs and Benefits

6、 Common Misconceptions and Risk Warning

1. Incorrect use of lubricantOrdinary butter causes carbonization of oil (increased wear by 300%)

2. Excessive preload adjustmentPre tightening force of lead screw nut greater than 10% of rated load will shorten the service life by 50%

3. Neglecting environmental controlCorrosion caused by humidity exceeding 80% (accuracy loss ± 0.05mm/month)

7、 Summary

A scientific maintenance plan for the screw servo module can reduce the risk of unplanned downtime by 60%. ForHigh precision industries such as electronics and automobilesIt is recommended to use predictive maintenance combined with constant temperature control;Damp environments such as food and beveragesNeed to strengthen anti-corrosion and waterproof design; Enterprises with limited budgets should at least implement basic preventive maintenance. By accurately matching maintenance strategies, enterprises can increase the overall equipment efficiency (OEE) to over 90%, achieving the goal of cost reduction and efficiency improvement