PRACTICE OF IMPROVING A SPRING TESTING MACHINE

Abstract

The article deals with the practical issues of modernizing the machine for testing springs MIP 100-2 in order to be able to perform laboratory research. Using the methods of the theory of mechanisms and machines, in particular the contour method, the design of equipment for testing three- and four-point bending is substantiated, thereby eliminating extraneous loading of the samples through redundant connections. For the loader carriage drive motor, it is planned to use power from a single-phase network via a frequency converter, enabling smooth adjustment of the carriage speed over a range of up to 9. To eliminate the influence of the weight of the device on the value of the measured force, a plate-type strain gauge is installed on the moving carriage of the machine. The output of the strain gauge signal to its load indicators is carried out by using an amplification unit, indication and transmission of indicators, which can be displayed on its display and via a converter to a PC. The described measures have been tested in practice and have shown a positive result. An electrical circuit has been developed that can also provide the movement of the carriage in manual and automatic modes using limit switches, which allows you to reduce the time spent on performing multi-series tests and creates reserves for the development of automation of the testing process through the use of special loading and feeding devices. The proposed technical solutions are quite simple and accessible for practical implementation by means of repair shops. Provided that simple retrofitting is performed on the machine, it is possible to perform compression, shear, and other tests. UMM-5 and similar tensile machines can be improved using a similar strategy