Head page of DNTU Masters portal of DNTU

-RUSSIAN

-UKRANIAN

Autobiography Electronic library Reference to the theme Search report Individual task

KAZANOV ALISHER

Donetsk national technical university

Faculty: "Mechanical"

Speciality: "Mechanical engineering"

The abstract of the master's thesis on the theme: "Justification structures and system provision many operating machine-tools"

Scientific Leader: Ph.D. technical sciences, assistant professor Kiseleva Irina

URGENCY OF THE THEME

The increase of level of the computer-aided manufacturing produces new system requirements instrumental providing. It is related to that reliability of work of instrument is rendered by direct influence on constancy of work of equipment, and the technical level of the instrumental adjusting influences on the productivity and flexibility of the system.

FUNCTIONS AND TASKS OF DIS

Modern automated manufacture can be defined as computer-integrated, linking together all the processes needed to design and manufacture of a given nomenclature details.

Because the technology rational - it is, above all, the rational use of the instrument, the organization of any technological system of production and the main determinant is the tool for

Increased automation of the production makes new demands on the system of instrumental support. This is due to the fact that the reliability of the instrument has a direct impact on the continuity of the equipment and technical level of instrumental adjustment affects the productivity and flexibility of the system.

In the process of preparing a flexible automated production and operation have to be a lot of support structures, which should ensure its smooth operation. All these structures form a network security tool, which is different from the farm tool manual production of the availability of automated management system, storage, movement of tools, their installation on the machines, repair and recycling. Modern automated manufacturing can not operate without a common automation of manual activities associated with delivery, installation and adjustment tool (DIS).

ORGANIZATION CHANGE THE INSTRUMENT IN FPS

Effective work with CNC machines that are members of the FPS, is largely dependent upon the timely change of machine tool storages.
When the machining, the use of ultrasound is being a perspective and a progressive direction in the modern technology. The output would work well to raise by means the intensification of machining condition (by reduction of cutting time) and would work well to improve the quality, precision and machines reliability. It is determined too, that the temperature, which is arising in the cutting area with the ultrasound, is reduced about twice. It results in the improvement of surface smoothness, and the absence of burn and microcracks as compared with the common grinding.

         Automated transport and storage of tools designed to perform the following functions:
         - Automatic transporting, and distribution tools to complexes machines;
         - Automatic loading and unloading tools from the machine storage tools you move to other parts processing and storing them in central storage;
         - Conclusion from the automated machine-tool complexes of instruments on to put right and sharpening;
         - Input in the automatic machine-tool complexes of new kits of tools.

Characterized machine-tools CNC were special memories - Stores tools for placement of the cutting tool and engineering for the automatic transfer it to a given sequence of the machine spindle in the storage and back.

Characteristic feature machine-tools CNC were special stores - tools stores for placement of the cutting tool and engineering for the automatic overload him in given sequence from store in spindle and back.

Transport and storage system consists in FPS instruments in their buffer storage store tools drum or chain type, which is installed at each machine and a central storage for individual adjustings tools.There are three principal arrangements of filing an instrument from the central warehouse to the machines:
1. Filing with the central warehouse, which is part of a complete set of tools adjustings and instrument settings for size, be made directly to the machine (Fig. 1). Delivery of an instrument can take the trolley, truck, etc

Figure 1 - Organization of the change tool with a small range of parts
At presence of plenty of FPS, served central storage, frequency of transport streams is increased and central storage is considerably loaded work; it is recommended to apply this chart as temporal on the first stages of introduction of FPS, or at the small nomenclature of details, fastened after FPS (less than 20). Thus all instruments are in the instrumental shops of machine-tools of FPS.
2. Filing a tool from a central warehouse via the intermediate depot, the total for all machine types OC combined in a single SST, and load the robot with an intermediate rack warehouse stores in stationary machines (Fig. 2).

Figure 2 - Organization of the change of instrument, with an average range of parts
3. Filing instrument individually from a central warehouse to the individual instrumental parts MRG, which are equipped with removable Stores. Then on the machines MRG submitted complete replacement storages. When you use the shrine scheme machine storage should be located on a separate rack in a convenient place to change. Such a scheme has been quite extensive use of broad-bet (more than 150 pieces) nomenclature workpieces and frequent turnover of the production facility.

Delivery of the Instrument for OC directly from the central warehouse reduced autonomy FPS. The choice must be made practicable between the second and third circuits, each of which has its own advantages and disadvantages. The third calls for the creation of new OC with replaceable storages or require substantial upgrading of existing OC. The second scheme allows to automate the download tool robots in stores both new and existing OC.

Autobiography Electronic library Reference to the theme Search report Individual task