AiVibeTextile & Automotive Manufacturing
Torque and Angle Tightening
Torque and angle tightening are controlled strategies for fastening threaded joints in assembly. Tools stop at a target torque, or rotate a defined angle after a snug torque, to achieve the clamp load the joint needs.
The function of a bolted joint is its clamp load, or preload, but this is hard to measure directly, so tightening is controlled by torque and rotation angle. In torque control, the tool stops at a target torque. In torque-angle control, the fastener is brought to a snug torque and then turned through a specified angle, which reduces the influence of friction scatter and is common for critical joints. Yield-controlled tightening detects the onset of yield from the torque-angle gradient.
Vehicle final assembly and powertrain, chassis and battery lines use electric nutrunners and controlled tools that record torque and angle for every joint, so results can be linked to the vehicle or part for traceability. Safety-critical joints such as those in brakes, steering, seat belts and suspension receive the closest control.
Most applied torque is consumed by friction under the head and in the threads, so lubrication, coatings and surface condition change the resulting clamp load. Monitoring windows on torque and angle detect faults such as cross-threading or missing parts. Power tool performance testing is covered by ISO 5393 and hand torque tools by ISO 6789, and tightening specifications come from the joint designer or vehicle manufacturer.
Key points
- Torque control stops at a target torque
- Torque-angle control turns a set angle after a snug torque
- Controlled tools record results for traceability
- Friction absorbs most torque, so lubrication changes clamp load
Where AiVibe comes in
AiAmbA use cases include visual inspection on textile and automotive lines, predictive maintenance and digital twins. Existing lines are retrofitted with edge devices, and AI agents only propose changes for a trained operator to confirm.
Explore AiVibe’s work in Textile & Automotive Manufacturing →
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