Abstract
For the technical problems of slender rod straightening quality control in the mechanical industry, a straightening quality control method for slender rod based on digital twin is proposed. According to the characteristics of the slender rod straightening process system, straightness detection device for slender rod suitable for production site is developed. Combined with the straightening process of the slender rod, straightening stroke model is given. Straightening quality control system for slender rod is established based on digital twin technology. Taking the piston rod of a large hydraulic cylinder as an example, straightening quality is controlled. The result shows that the theoretical calculation error rate of the straightening stroke is less than 0.5%. Straightness data of piston rod with quality control system is compared with straightness data of piston rod without quality control system. The result shows that the straightness consistency of the piston rod by quality control is good, and it is controlled within the range of 0-0.5mm. Straightening pass rate increased from 30% to 100%. This proves straightening quality control system for slender rod based on digital twin is effective. It can meet the needs of actual production. This study provides technical support for the optimization of slender rod straightening process parameters and high-precision machining.
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