电脑绣花机中支承横梁的铝合金箱体上有4个M10的螺纹孔用来固定横梁。横梁上有20组绣花机头,工作时振动大,横梁和铝箱的连接必须紧固,而铝箱的防振和外观要求又决定它不能改用其它材料,因此要求铝箱的螺纹强度特殊高。这种特殊高,就是大大超出通常的铝合金螺纹强度,这也是我厂 There are four M10 threaded holes on the aluminum alloy box supporting the beam in the computer embroidery machine for fixing the beam. There are 20 groups of embroidery heads on the beam. When working, the vibration is great. The connection between the beam and the aluminum box must be fastened. The aluminum box’s vibration-proof and appearance requirements also determine that it can not be changed to other materials. Therefore, the thread strength of the aluminum box is special high. This special high, which is much higher than the usual aluminum thread strength, which is my factory