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Multi-tool machines, composed of Design experience has shown that the most labor-intensive and metal-intensive beds can
normalized and partially special units are be unified. We have developed welded beds with subsequent artificial aging. The result is a fairly
called aggregative. These machines are used in wide range of welded products with a large volume of welding and heat treatment, which must
large-scale and mass production. On modular be mastered by the welding workshop. After the development, the workshop began to work at
machines, you can perform drilling, reaming, an intermediate warehouse, handing over finished products to the reserve. The next object of
countersinking, boring, milling, cutting internal unification was the hydraulics of modular machine tools. Initially, a range of hydraulic cylinders
and external threads, some types of turning. was developed with a completely new design, taking into account the level of production.
Aggregate machines are mainly used for
making body parts. The end result of machine
tool aggregation is machine systems in the form
of flexible production systems of technological
equipment. Modern machine tool equipment
is the basis for the development of flexible

Fig. 3. Modular milling head of the aggregate machine. automated production, which sharply increases
labor productivity in conditions of medium and
small batch production.
Microprocessor control devices transform the machine into a machine module that combines
flexibility and versatility with a high level of automation. The machine module is capable of
processing a wide range of work pieces in an off-line mode based on low-manned or even
deserted technology.

Advantages of modular machines:
• short design terms;
• ease of manufacture, due to the unification of units, mechanisms and parts;
• high productivity due to multi-tool processing of blanks from several sides at the same time;
• the ability to reuse part of the units when changing the production facility;
• the ability to service machines by a low-skilled operator.
In the 70s, design and manufacture of modular machine tools for equipping the
agricultural machine-building complex was established in Uzbekistan. Serial production of
agricultural machinery, which was gaining momentum, increasingly required the automation
of the metalworking process. Aggregate machines Fig. 5. Original unified blocks with electrohydraulic control devices.
first took over individual operations, and soon
became an integral part of aggregate modules and Based on the use of conventional automation devices, a typical hydraulic unit was developed.
automated lines. This required an intensification The hydroelectric power station was created without a hydraulic panel, but with original unified
of the design work and the work of the new blocks with electrohydraulic control devices based on plates for butt mounting of pressure
production. The question of the development of control valves of flow regulators and electromagnetic distributors, recruited depending on the
unified units and parts of modular machine tools hydraulic circuit. Subplates are a convenient way to assemble multiple hydraulic components
and the organization of their small-scale production in one place. They provide a compact design, fewer leaks, easy maintenance, a 30% to 50%
came to light. The already mastered units and parts reduction in assembly and installation costs, and the ability to install monitoring devices as
in other industries became the basis; they were to close to equipment as possible.
be introduced into the design of machine tools and Numerous hydraulic lines have disappeared, and the operation and changeover of
into production. Despite the apparent simplicity of the hydraulic system has become convenient. The most labor-consuming elements of the
the task, it turned out to be rather complicated. hydroelectric station appeared in the warehouse. As a result of the work carried out, a significant
Initially, the enterprise standards were developed base of high-quality unified work units and parts has appeared, with working design and
for the most commonly used units and parts. technological documentation developed on them and mastered production. This greatly reduced
After long-term development and coordination Fig. 4. Modular hydraulic station of the modular machine. the development time of new equipment, its manufacture, and made it possible to readjust the
with the design department, the standards were introduced through the development of working equipment during operation. All developments were raised to the rank of enterprise standards
design documentation. They have successfully passed the production approbation, and all the and standard working drawings were developed for them, which were used to complete projects
services gradually got used to them. All this time, the author of the development of standards of modular machine tools. The rest, power tables and rotary tables, were purchased from other
was constantly next to the designers and technologists, jointly solving numerous issues. enterprises.
Even such obstacles as the case of an oil flash during the heat treatment of the milling
spindle or thermal configuration changes during welding of body parts did not affect the result, (To be continued).
but only were a factor in more scrupulous development of the enterprise standards. However,
in spite of everything, the designers were the first to feel the power of the worked out unified
units, the convenience and the need for further work in this direction. Manufacturers got the Alexander Nusratovich Mamedov,
opportunity to work because of future orders; unified units appeared in the workshop warehouse head of non-standardized
for finished products. and special equipment of UZLITINEFTGAZ JSC

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