Time：2025-09-02
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In 3C and many other industries, fastening small screws is a routine process. Yet, because the threads are weak and the tapped holes are made of soft material, these screws usually tolerate only 0.1–0.5 Nm of torque and are therefore easily stripped by over-tightening. Stripped threads not only scrap the product but also raise cost and lengthen cycle time. Preventing this problem has become a major concern for manufacturers.
Stripping occurs when the torque applied to the screw exceeds what the thread and hole material can bear. In 3C products, lightweight, high-strength materials such as aluminum alloys are common; while they save weight and boost performance, their threads are relatively weak. Production issues—insufficient screw perpendicularity, excessive tightening speed, etc.—also contribute to stripping.
Danikor tools offer an effective solution through high-precision torque control and intelligent tightening strategies.
Advanced torque sensors and servo motors deliver ±5 % accuracy at 6 σ. The screw therefore receives neither excessive torque (which causes stripping) nor insufficient torque (which causes loosening).
Torque, angle, and slope are monitored throughout the cycle. If torque suddenly drops or angle behaves abnormally, the tool stops immediately and raises an alert.
• Pre-tightening: the screw is driven to 30 %–50 % of the target torque, ensuring perpendicular entry and component contact.
• Final low-speed tightening: torque is gradually increased to the target value, eliminating stripping due to impact.
This staged approach lowers the stripping rate and improves product reliability and consistency.
The operator interface is simple; after minimal training, operators can work independently. Every tightening record—including torque value and timestamp—is saved automatically for easy export and analysis, supporting quality control and full traceability.
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