Dimensional Joint Running-in of Cylindrical Parts of Mining Machinery
| Autor: | Valeriy Yu. Blumenstein, Oleg Ostanin, Maksim Mahalov, Andrey Krechetov |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
lcsh:GE1-350
Computer science Hydraulics Mechanical engineering 02 engineering and technology Surface finish 021001 nanoscience & nanotechnology law.invention Grinding 020303 mechanical engineering & transports Economic situation 0203 mechanical engineering Machining law Hardening (metallurgy) One pass 0210 nano-technology lcsh:Environmental sciences Combined method |
| Zdroj: | E3S Web of Conferences, Vol 174, p 03001 (2020) |
| ISSN: | 2267-1242 |
| DOI: | 10.1051/e3sconf/202017403001 |
| Popis: | The current task of engineering is to ensure the quality and reliability of critical parts of an extended cylindrical shape. This task is especially relevant in the production of power hydraulics parts for mining equipment (ME). One of the ways to ensure the required quality of the surface layer (SL) of mining equipment parts is the use of combined and joint methods of parts hardening by surface plastic deformation (SPD). Combined methods present sequential machining in which the methods used are separated into different technological steps, while the joint machining is carried out by concentrating the methods into one technological step (setup). The analysis shows that this approach, although it has a number of indisputable advantages, allowing an increase in the accuracy, machining efficiency and SL quality, is not without drawbacks that hinder the use of combined and joint machining methods in the manufacture of parts with IT 8-9 accuracy. The dimensional joint running- in method (DJR) is based on the original scheme of interaction between the cutting and deforming tools allowing a cylindrical surface with an accuracy of IT 8-9 and a roughness of no more than Ra 0.4 μm, hardened to a depth of 10 mm in one pass. The study shows the possibilities of a much greater SL deformation without its destruction than with the traditional SPD. The analysis of the structure and basic technologies has shown the feasibility of replacing a number of turning and grinding operations with one dimensional joint running-in operation. The design of the device for DJR based on a lathe is given. The completed economic calculations have established that it is possible to implement this method in the existing economic situation. |
| Databáze: | OpenAIRE |
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