1. Environment and Timing Selection
Calibration must be performed after the equipment has fully warmed up: Run the machine idle for 15-20 minutes to allow mechanical parts to reach operating temperature before starting, avoiding deviations caused by thermal expansion and contraction.
Do not calibrate on uneven ground: If the factory floor is sloping, accuracy deviations may still occur after calibration. The machine frame must be leveled before calibration.
2. Key Points During Operation
The calibration sequence must be correct: First calibrate the frame level and table parallelism, then calibrate positioning accuracy and color registration. Incorrect sequence will lead to subsequent deviations, requiring rework and recalibration.
Avoid excessive adjustments in a single step: Tighten the fine-tuning positioning pins by only 1/8 turn each time. Verify the adjustment immediately afterward. Do not tighten too much at once, as this can easily cause excessive offset.
Do not use brute force to pry parts: If the position is stuck during alignment adjustment, loosen the fixing screws before moving. Forceful prying can deform the guide rails and positioning pins, actually increasing the error.
3. Post-calibration Verification Requirements
Continuous batch verification is mandatory: After calibration, print at least 30-50 samples consecutively. Randomly test the deviation of the last 10 samples. Only after confirming long-term operational stability is the operation considered合格 (qualified). Testing only 1-2 samples is insufficient to verify stability.
Record Calibration Parameters: Record the adjusted parameters in the system after each calibration. If deviations recur, the parameters can be directly compared to quickly identify the problem.
4. Safety and Maintenance Reminders
The main power supply to the equipment must be disconnected before calibration. Never turn on the machine while adjusting the mechanical structure to avoid accidents.
For equipment that has not been used for a long time, before restarting calibration, first lubricate the transmission parts and clean any residual slurry and debris from the track. This prevents debris from affecting accuracy.
If the wear of the transmission components exceeds 0.2mm, calibration alone cannot restore accuracy. The worn track and guide wheels must be replaced before calibration; otherwise, the equipment will quickly deviate from its intended position after calibration.
