The article discusses the design of the stand for the diagnosis and determination of the optimal modes of thermo-force processing (TFP) of light-hard long shaft-type parts. The stand is equipped with an automatic control system (ACS) for heating, cooling and axial plastic deformation. ACS includes three control loops. The functional scheme of the stand and its operation algorithm are described.
The article presents the design features of subcompact small-capacity racing car of kart class. The issues of the strength of the supporting structure are considered. The main strength characteristics of the material AISI-1020 are presented, which was used in the design of the frame chassis. A conceptual block diagram of a methodology for designing a supporting structure model using engineering analysis methods (finite element modeling) is presented. The analysis of structural strength using ANSYS software is carried out. The rode type finite element model of the frame is presented. The directions of application and values of the resulting loads are determined taking into account the overloads experienced by the pilot in collisions. The boundary conditions and the deformation pattern of the frame structure when applying the deforming forces to the front beam along the longitudinal axis of the car, outside the longitudinal axis of the car and on the lateral truss of the car frame are given. The engineering analysis data show a good coincidence of the modeling results with the experimental data.
The development relates to machine tool construction, in particular, to the technological processes of chip removal with automatic control of technical process parameters. The installation allows you to automatically manage the process of turning. New in the process of turning is that the position of the cutter in the ZOY plane is changed directly in the cutting process, which reduces cutting forces. Registration of which is carried out by an indirect method based on the analysis of vibroacoustic emission, and is corrected by information about the torque on the main drive of the machine. The installation is a tool rotation mechanism, in which the worm-worm sector, is equipped with a controlled drive and a feedback control circuit on the position of the worm.
The article discusses the technology of thermal power treatment of long, non-rigid parts of the “shaft” type. The design of the device for thermal-power deformation of the shaft and the principle of its operation are given. The device is equipped with a three-circuit automatic control system. The control system allows you to control the forces for axial deformation and the temperature of heating and cooling. The developed technology allows us to solve the problem of maintaining the straightness of the shaft during operation.
This article reviews the design of thermal power units for performing thermal operations of hardening and tempering of non-rigid parts of the “shaft” type. The authors describe the thermal power treatmenttechnology, the residual deformation analysis and the optimal conditionsdefinition. The units operation principles and algorithms are given.
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