Increasing the resource of grain planters

Abstract

One of the main types of wear of working bodies of tillage and sowing machines is abrasive wear. Such wear leads to loss of efficiency of a blade of working bodies, in particular grain sowing machines.
During mechanized technological operations of sowing of grain crops disk openers of seeders reduce (lose) the working capacity in case when distance between their edges in a place where they converge, exceeds 5 mm. The latter is due to the reduction of the outer diameter of the disks and is the basis for the replacement of disks.
The restoration of worn-out disks is economically justified. Therefore, the article considers the existing methods of restoration of the working bodies of grain sowing machines. The method of restoration of the specified details with use of mechanical vibration oscillations of the processing tool is offered.
It has been experimentally confirmed that the method of restoring seed discs does not affect the value of their final resource. Vibration recovery is preferred.
Researches of process of vibration strengthening of material of details which promote quality of restoration of disks of openers of grain sowing machines that provides their increased wear resistance and, accordingly, increase of a resource are carried out.
The main parameters of processing at vibration hardening (amplitude, frequency of oscillations of the processing tool, processing time) are established.
The research established the nature of the wear intensity of the diameter of the opener discs and the thickness of their blades.
It is established that the wear resistance and, consequently, the service life of the opener discs depend on both their parameters and the method of restoration.
The obtained data of bench tests allow to implement in production technology of restoration of disks of openers by a method of vibration deformation.