Overhaul and modernization

Ensuring quality and high technical level of modernized machines

One of the main directions of production activity of MZOR OJSC is repair and modernization of technological equipment. The enterprise performs a complex of works – development of design and documentation, technological preparation of production, research and development activities, organization of machining and assembly production, continuous improvement of production cycle, metrological support, etc., aimed at restoring the performance of machine tools, ensuring high quality and improving the technical level of modernized equipment, bringing it to the level of modern samples of technology.

The certification bodies officially confirmed that the integrated management system “Design, production, repair. Modernization of machine tools and provision of services for metal products manufacturing” meets the requirements of STB ISO 9001-2015, STB 18001-2009, STB ISO 14001-2017.

Modernization of technological equipment performed by MZOR OJSC includes a set of measures:

1. Increasing machine productivity
   • replacement of electric drives, equipping the machine with higher power and high-speed drives;
   • replacement of the spindle unit, use of a high-speed shaft;
   • increasing the speed of linear movements, replacing guides, traction devices, drives;
   • equipping the machine with a CNC system of the required level, digital electric drives;
   • automation of auxiliary operations, equipping the machine with automatic tool and workpiece changing devices;
   • Equipping the machine with state-of-the-art coolant systems;
   • equipping the machine with modern high-performance tooling systems.

2. Increasing machine reliability
   • equipping the machine with mechanical, electrical, hydraulic and pneumatic components of high technical level from the world’s leading manufacturers;
   • use of modern lubrication systems;
   • application of machine condition monitoring and diagnostics systems;
   • application of thermal stabilization systems for functional systems and assemblies, machine support system;
   • use of systems of automatic control of cutting tool wear and life with correction of its position by means of CNC system.

3. Increasing machine accuracy
   • ensuring rigidity of the machine’s bearing systems and drives, use of zero-lift precision drives for linear and circular movements;
   • use of quality materials, cast iron castings;
   • precise machining of parts of the support system and drives;
   • equipping the machine with a high-precision spindle unit;
   • the use of high-precision guideways;
   • use of precision linear and circular motion measuring systems;
   • equipping the machine with a system for monitoring the dimensions and accuracy of the workpiece;
   • equipping the machine with deformation compensation systems, incl. by CNC.

4. Increasing the level of automation and versatility of the machine
   • equipping the machine with universal heads, rotary units, modular functional systems;
   • equipping the machine with a modern numerical control system;
   • use of automatic head, tool and part change systems;
   • application of modular machine tool systems, reconfigurable assemblies and systems that ensure expansion of its functionality and performance of heterogeneous technological operations.

5. Ensuring machine safety and ergonomics
   • equipping the machine with cabinet-type protection, etc. devices ensuring safe operation and ecological cleanliness of the machine, environmental protection;
   • development of a machine design that meets modern requirements in terms of appearance and ergonomics;
   • painting of the machine in accordance with the design project.

6. Computer modeling of a machine tool using the finite element method
   • application of three-dimensional computer graphics in machine tool designs;
   • computer emulation of machine operation;
   • Predicting the static stiffness of a machine tool;
   • Prediction of machine tool vibration resistance;
   • Modeling of thermal stability and thermal deformations in a machine tool.