METHOD TO CONTROL STRAIGHTENING PROCESS Russian patent published in 1996 - IPC

FIELD: metals machining, blanks and pieces straitening during production of hydraulic cylinders, bodies and plungers of deep well sucker-rod pumps and other highly accurate lengthened pieces of petroleum, chemical and electrical power mechanical engineering. SUBSTANCE: before loading, in 5 - 12 controlled sections of straightened part of blank deviation of existing form from given one is measured. According to measured values of required blank form correction is defined. In process of straightening movements of the sections of blank are continuously measured. According to values of movements real deviation of blank form from initial one is determined. Results of deviation are compared with forms, that are peculiar for elastic and plastic deformations. Using calculations residual deformation is determined. The value is compared with value of blank form required correction. Value of required correction and parameters of elastic and plastic deformations are calculated using factors of action by given formulae. During straightening axially symmetric blanks, mounted for straightening blank before loading is rotated around its axis. Movements in controlled sections are measured and average value of each section is taken as characterizing rectilinear form of blank and beginning of movements counting. EFFECT: improved process. 3 cl, 1 dwg, 3 tbl