Pistunov I. Models and methods of optimization of trybotechnical indexes of knots of friction of blacksmith-punching equipment

The work is devoted to antifriction materials establishment into mining machines friction knots which is based on the devices developed by the author for physical friction processes model-ing for forward, reversely-forward, facial, for oscillatory in spheres hinge and ball transmission mechanism schemes and mathematical models of losses on friction in spheres hinge with antifric-tion enclose (in integral equalizations system) and ball transmission mechanism (BTM). The original methods of experiments treatment were created. They consist of complicated qualitatively-quantitative experiments planning which could be stopped in any moment of time with not infringing of plan ortogonality, of experiments approximations (which have the qualitative changes in the ex-plored processes), optimum coefficients computation of scale transition from the model to the nature that provide such model tests, in which physical-mechanical materials properties can be the same that in the natural knot but the test regimes canbeaccessible for creation them on model plants. The comparative analysis of antifriction materials method is worked out. Computation methods of inertial errors, which are created by reason of acceleration of measuring system, attached to meas-uring of instantaneous force senses is developed. That allowed not only to increase friction forces measuring exactness on model plants, but to raise measuring exactness of the electric locomotive tug effort shaft. Computation methods of antifriction enclose optimum form in spheres hinge with full comprehension of the heel by spheres base and for the hinge with truncated pole and optimum form of conduit into BTM are created. The principled device scheme for determination of wear type, which will allow to include it into the system of responsible friction knots of mining machines monitor-ing is developed. All the developed methods were well-tried experimentally where the high exact-ness of the theoretical deductions was endorsed. From the wide gamma of polymeric antifriction materials were selected such materials that are more suitable for use in knots of friction of smith-stamp equipment: meta-loftoroplast, carboplas "ТГН-2М" type, ftoroplast type cloth "нафтлен-8" and "НПИ-МС" material. All the developments were combined into the general conception of the antifriction materials establishment into the friction knots of smith-stamp equipment. Now it allows to seek the optimum material for each concrete friction knot quickly and with minimum expenses, that will provide augmentation of term of its reliability and exploitation. The computations for spheres supports of careers scoop shovels and BTM application instead of power hydropapes and pneumopapes in smith-stamp equipment are brought. That is endorsed by application acts of created methods attached during repairs of smith-stamp and mine equipment on the "Zavod Dnepropress limited", mine-metallurgical combinat of Volnogirsk" "Medvezheyarska" mine and the "Costiantynovsky" and "Ordzhonikidzevsky" careers.