Preliminary design of flexible roll forming machine and process planning for advanced high strength steel
碩士 === 國立高雄應用科技大學 === 模具工程系 === 105 === Technologies of the flexible roll forming process simulation and the forming machine design were developed and verified using an example of the U-section 1180Y high strength steel product with variable width profile. The flexible roll forming process was devel...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2017
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| Online Access: | http://ndltd.ncl.edu.tw/handle/wm6t64 |
| Summary: | 碩士 === 國立高雄應用科技大學 === 模具工程系 === 105 === Technologies of the flexible roll forming process simulation and the forming machine design were developed and verified using an example of the U-section 1180Y high strength steel product with variable width profile. The flexible roll forming process was developed according to the cross section geometry and the longitudinal profile of the product. The structure and the motion mechanism of the forming machine was designed with three degree of freedom for each roll and controlled using the Ethernet based control system.
The flexible roll forming machine was composed of the modules of guiding, forming roll rotation, forming stand rotation and linear motion, and the Ethernet based control system. The roll forming path was designed to cope with the longitudinal profile of the product and checked with the motion simulation of CAD software. The CAE simulation results predicted the maximum dimension deviation 0.93mm occurs at the web of the arc profile segment. The averaged springback angle was 2.74 degrees at the arc profile segment connected to the previous inclined line segment. Side movement of blank was occurred during the forming experiment and resulted in the product profile shift. The maximum deviation of the sideward shift of the blank is 4.04 because of the guiding rolls after the forming stand was not installed in this one-stand forming machine. The blank was not well-controlled at the exit of the forming stand.
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