我厂批量生产的筒体,长3020mm,外径为φ93mm,内径φ72mm,热轧钢管调质后,车加工前需要校直,要求工件轴线在全长上的直线度误差小于1mm。开始生产时,采用自制平尺测量直线度,操作不便且不易保证质量,废品很多。为此我设计了如图所示的长杆类零件直线度测量装置。 I plant mass production of the cylinder, length 3020mm, diameter φ93mm, diameter φ72mm, after hot-rolled steel quenched and tempered, the need to straighten the car before processing, requiring the workpiece axis in the entire length of the straightness error of less than 1mm. Start production, the use of homemade flat ruler to measure straightness, inconvenient operation and not easy to ensure quality, waste a lot. To this end, I designed the device as shown in Figure rod straightness measurement device.