Threads are generally produced by machining. The accuracy of the thread is mainly determined by the tooth type error, the tooth pitch error and the medium diameter tolerance. The medium diameter tolerance is usually measured by the three-needle and single-needle measurement methods. If you are a little careless, it is easy to be out of tolerance. In the teaching, according to the thread shape, the triangles and trapezoids are regular. By solving these triangles and trapezoids, the triangular tangential relationship is used to calculate the width and the width of the thread spiral groove of various tooth angles. The proportional relationship of the change in the diameter. In this way, in the thread turning, it is possible to perform only one measurement, and accurately calculate the axial feed amount based on the difference between the measured actual size and the dimension given by the drawing.
The blind plate is mainly used to completely isolate the production medium and prevent the production from being affected or even causing accidents due to the loose closing of the shut-off valve
Blind Flange Flat Face,Blind Flange Raised Face,Jis B2220 Flange,Gost Flange
Jinan Xintai Forging Co., Ltd , https://www.xtdzflange.com