Dalian 20 axis camshaft cover tightening machine: core techniques for torque control and precision calibration

Dalian 20 axis camshaft cover tightening machine: core techniques for torque control and precision calibration

The torque control and precision calibration of the 20 axis camshaft cover tightening machine are key to ensuring the assembly quality of automotive engines, directly determining the sealing performance of the camshaft cover and the stability of equipment operation. The particularity of multi axis synchronous operation requires controlling core skills, avoiding torque deviation, accuracy degradation and other problems, and adapting to the needs of large-scale high-precision production.

The core of torque control is dual closed-loop regulation and zone adaptation. The equipment needs to rely on the PLC main control system to link the servo mechanism, coupled with high-precision torque sensors, to achieve dual closed-loop feedback of torque and angle, adjust the output force of each axis in real time, ensure that the 20 axes are evenly stressed, and control the torque deviation within ± 3%. For different models, it is necessary to preset segmented tightening procedures, first pre tighten the positioning and then gradually apply pressure to avoid bolt slippage or camshaft cover deformation caused by excessive instantaneous force. At the same time, torque parameters should be flexibly matched according to bolt specifications and materials, taking into account both tightening force and assembly safety.

Precision calibration should follow the principles of regular calibration and full process verification. Before starting up each day, a standard torque meter is required to perform single point calibration on each axis to verify the accuracy of torque output; Conduct full range calibration every month to investigate issues such as axis orientation deviation and sensor sensitivity attenuation. During the calibration process, it is necessary to synchronously check the alignment accuracy between the tightening shaft and the workstation, and fine tune it with the visual positioning module to avoid positioning deviation affecting the tightening accuracy.

In addition, the Dalian 20 axis camshaft cover tightening machine needs to undergo daily maintenance to maintain accuracy: regularly clean the torque sensor and encoder of dust and oil stains to avoid signal interference; Check the wear of the shaft body and replace aging components in a timely manner; Retain calibration data for easy traceability, and promptly investigate and regulate accuracy deviation anomalies. Mastering the above techniques can effectively maintain the stability and performance of equipment, and provide a solid guarantee for efficient and compliant assembly of engines.