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我厂生产的轻便两用摩托车樑架是用薄壁异型焊接管弯曲成形的(见图1),由于弯曲半径小,毛坯是薄壁异型管,所以弯曲成形较困难,弯管质量也较差。以前采用的是:灌砂——手工弯形——校正工艺。该工艺的工序多,劳动强度大,需六个人操作,操作工人易得矽肺病,还浪费木材和钢管切头,质量也不稳定。由于对摩托车樑架的外观质量要求较高,表面不得有凹凸不平,弯曲部分不得有皱纹。按上述工艺加工是达不到这一要求的,后经我们长时间试验,成功地用轧制出的异型空管直接冲弯成形。质量达到要求,而且非常稳定;生产率高,约比原工艺提高6倍以上;且只需一人即可操作,大大减轻了工人的劳动强度;成本也大幅度降低。
The light and dual-purpose motorcycle beam frame made by our factory is made of thin-walled shaped welded pipe (see Figure 1). Because of the small bending radius and the thin-wall special-shaped pipe, the bending is more difficult and the pipe quality is better difference. Used before is: filling sand - manual bending - correction process. The process of multi-process, labor-intensive, six people need to operate, easy access to workers silicosis, but also waste wood and steel cut, the quality is not stable. Due to the appearance of motorcycle beams higher quality requirements, the surface must not be uneven, curved parts must not have wrinkles. According to the above process is not up to this requirement, after a long trial, we successfully rolled out of the special-shaped hollow tube bending directly formed. Quality meets the requirements, and is very stable; high productivity, about six times more than the original process; and only one person can operate, greatly reducing the labor intensity of workers; the cost is also greatly reduced.