Torque overshoot—when the actual torque exceeds the preset or target value—can cause serious problems:

1. Bolt Damage: Exceeding the bolt’s torque limit causes plastic deformation or even fracture. This not only ruins the bolt but can trigger a chain reaction, degrading overall system performance.

2. Loosening of Joints: Excessive torque increases internal stress, leading to joint loosening. This may cause vibration, noise, and eventual equipment failure.

3. Seal Failure: Over-torquing deforms mating surfaces, breaking the seal and causing leaks that compromise both operation and safety.

4. Shortened Life: Premature fatigue of components reduces the service life of the entire machine.

To save cycle time, many operators drive screws in at high speed in one shot. The resulting impact often produces torque overshoot and severe torque decay.

Smart Screwdrivers Solve the Problem
Smart drivers deliver high precision and multi-step strategies. Taking Danikor’s intelligent driver as an example, the tightening process is split into stages:

• High speed during thread engagement to keep cycle time short

• Low speed for final tightening to prevent overshoot

More and more factories are adopting this approach.

Danikor’s multi-step program and its purposes:

1. Reverse Search for Bit Engagement (“Cap Detect”)
   Ensures the screw enters the hole straight, prevents cross-threading, and detects duplicate tightening or socket-fit failures.

2. Low-Speed Thread Engagement, then High-Speed Run-Down to Snug
   Fast spin-down saves takt time while identifying mis-feeds, duplicate hits, short/long screws, thread damage, or torque spikes.

3. Low-Speed Final Tightening
   Reduces speed to seat the torque inside the target window, preventing overshoot. Also detects thread defects, missing washers, or changes in surface finish.

Danikor’s intelligent electric screwdriver matches imported brands in performance, solving torque-overshoot issues without sacrificing cycle time. It is the preferred choice for companies automating their lines and boosting productivity.