Problems encountered in production assembly
1. The concept of the bonding surface is extremely important in the tightening process, and it is generally believed that after the bolt reaches the bonding surface, the tightening really occurs. In general, many users will agree on a small torque value as a basis for reaching the fit surface.
2. In the case of inconsistent aperture, it may cause problems that are not fully fastened, such as floating nails. If it is not detected in time, it may cause subsequent costs such as recall, rework, and material scrap.
Possible cause
1. The aperture consistency is not high;
2. The method of determining the fitting surface is not reasonable.
Strategies adopted in the screwing stage:
1. At the appropriate starting point, the slope of the curve will be monitored;
2. Set a trigger value for the slope of the curve. If the slope of the curve continuously exceeds the trigger value during the screwing stage, the fit surface is considered to have been reached.
More information about Smart Batch (Smart screwdriver) tightening strategy:
1. Before the implementation of the strategy, it is necessary to collect several tightening curves, and determine the control parameters of the strategy through the nature and law of the curves;
2. In the case of tightening plastic parts, the probability of aperture inconsistency is relatively high, and the implementation of this strategy can be considered.
