Vol 36, No 11 (2016)

The principles of information support in the development, design, production, operation, and disposal of manufacturing components are considered.

A method is proposed for calculating the fatigue strength in tooth flexure and the resistance to jamming of the contacting tooth surfaces for a hypoid gear.

In the proposed device, some of the energy from the shock absorber is used to charge the vehicle’s battery. This device is based on the creation of emf in an induction coil wound on a frame whose axis is aligned with the shock-absorber piston.

A machine-tool system for active monitoring by vibrocontact measurement is proposed. This equipment increases the machining precision and productivity and also the technological margin of precision.

A model is proposed for the automatic control of manufacturing processes and the necessary preparations. The model is based on step-by-step implementation of a systematic approach and a feedback mechanism. In automated control, the preparations, involving CAD/CAPP/CAM/PDM systems, are integrated with control of the manufacturing process. The model permits the use of paperless technology based on a 3D model of the part and three important stages in the derivation and analysis of information regarding the operation of the working centers. Subsystems permit monitoring of the equipment and the cutting tool and analysis of product quality so as to formulate corrective measures on the basis of feedback mechanisms.

The design of tools for machining the commutators of electric motors is considered. To improve machining quality and the productivity of commutator repair, the finishing operations—grinding and polishing—may be replaced by final turning with a cutter sharpened by superblade technology.

The use of synergetic concepts in studying the steady shaping trajectories of the tool relative to the workpiece in end milling is discussed, with allowance for elastic displacements and their stability. A two-level hierarchy of dynamic equations is employed. At the first level, steady trajectories are considered. At the second, their stability is analyzed on the basis of variational equations for these trajectories. The case in which the pulsed reaction of the system is an order of magnitude less than one period of the displacement cycle is considered.

A method is proposed for the design of optimal internal grinding cycles in multidimensional control- parameter space, under numerous technological constraints. This method is based on stepwise modeling of metal removal in terms of specified machining properties, with allowance for elastic deformation and the cutting kinematics. Optimization is based on dynamic programming, which permits any number of technological constraints to be taken into account and is not sensitive to the type of mathematical models employed or the constraints on the target function.

The polishing of a lithium-niobate single crystal is considered. Specifically, the influence of the applied pressure and relative speed on the productivity and the quality of the machined surface is studied. A formula is given for the total depth of the surface layer removed in finishing and the polishing time required for its removal.