UA101907C2 - Spindle bearing on permanent magnets - Google Patents

Abstract

A device relates to machine-tool construction and in particular to the systems of automated control and stabilization of position of form-forming elements of high-precision machines for processing precise elements of optics and mechanics and can be used for construction of precision bearings on permanent magnets. This is achieved by the fact that in spindle bearing on permanent magnets that includes sensors of position of the shaft of the bearing, the power magnetic pushers, device of automated control of position of the bearing shaft, the shaft is arranged as component and includes output shaft, bearing shaft and tail element, at the ends of the bearing shaft, in screens, shaft magnets are installed as hollow cylinders with poles at the inner and outer side surfaces, in bushings installed in the body of the spindle bearing on permanent magnets, over the magnets of the shaft of the spindle bearing, by axles of rectangular coordinate system, four power magnet pushers are installed, each power magnetic pusher includes a permanent magnet installed to the screen made of magnetic soft material, piezoelectric motor installed to ceramic insulator and control screw, at that the permanent magnets of the power magnetic pushers are directed with poles to same poles of magnets of the shaft, the power magnetic pushers and the magnet of the shaft that are installed in one cross section of the bearing form a power magnetic suspension of the shaft of spindle bearing on permanent magnets, in the body of the spindle bearing on permanent magnets in ceramic bushing by half-axes of the rectangular coordinate systems, where the axes are parallel to the axes of coordinate systems by which the power magnetic pushers are installed, and sensors of position of the shaft of spindle bearing on permanent magnets are installed. Device for automated control of position of the shaft of spindle bearing on permanent magnets includes drive, first differential amplifier of mismatch signal, second differential amplifier of mismatch signal., first gap value measuring device, second gap value measuring device, amplifiers, switch “on-off”, piezoelectric motors of power magnetic pushers, at that the sensors of position of the shaft of spindle bearing on permanent magnets are electrically connected to piezoelectric motors of power magnetic pushers, at that the output of the drive is connected to the first inputs of the first differential amplifier of mismatch signal, second differential amplifier of mismatch signal, the sensors of position of the shaft of spindle bearing on permanent magnets are connected to gap value measuring devices, and the outputs of those are connected to the second inputs of the first and the second differential amplifiers of mismatch signal. The first and the second outputs of the first and second differential amplifiers of mismatch signals are connected to the inputs of amplifiers, the outputs of amplifiers through the switches “on-off” are connected to the piezoelectric motors of power magnetic pushers. Improved spindle bearing is energy saving due to absence of gas consumption for bearing blow.

Description

encoder, the first differential amplifier of the misalignment signal, the second differential amplifier of the misalignment signal, the first backlash gauge, the second backlash gauge, amplifiers, on-off switch, piezoelectric motors of power magnetic repulsors, and spindle support shaft position sensors on permanent magnets are electrically connected to the piezoelectric motors of the power magnetic repellers, and the output of the encoder is connected to the first inputs of the first differential amplifier of the misalignment signal, the second differential amplifier of the misalignment signal, the position sensors of the spindle support shaft on the permanent magnets are connected to the quantity meters gap, and their outputs are connected to the second inputs of the first and second differential amplifiers of the mismatch signal, the first and second outputs of the first and second differential amplifiers of the mismatch signal are connected to the inputs of the amplifiers, the outputs of the amplifiers are through switches "on-off." connected to piezoelectric motors of power magnetic repulsors.

The improved spindle support is energy-saving due to the absence of gas consumption for inflating the support.

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The invention belongs to machine tool construction and, in particular, to systems of automatic control and stabilization of the position of forming elements of high-precision machines for processing precise elements of optics and mechanics and can be used for the construction of precision supports on permanent magnets.

According to the assistant USSR Mo 1 500 805 dated 1.10.1987 known aerostatic spindle support. This aerostatic spindle support is selected as a prototype. The prototype aerostatic spindle support includes an aerostatic spindle support with two blow lines. On the outer sides of the radial spindle support, there are two independent support shaft misalignment compensators, which are equipped with adjustable kerosene flow limiters. Each adjustable kerosene flow limiter includes a piezoelectric motor with a pressure regulator in the kerosene layer.

At the same time, adjustable kerosene flow limiters, which are located symmetrically with respect to the shaft position sensors, can be combined into groups in which piezoelectric motors are connected in parallel to the automatic control system.

The following should be noted. Aerostatic spindle support is difficult to manufacture.

The estimated value of the gap between the sleeve and the support shaft is in the range from 10 μm to 30 μm. The operation of the aerostatic spindle support requires the presence of an energy-intensive compressor unit. The kerosene limiters of the aerostatic supports become dusty, and the moisture that falls from the kerosene that has entered the blow-up causes corrosion.

Spindle support on permanent magnets is free of these disadvantages. Permanent magnet supports are durable. Demagnetization of magnets made of non-critical materials does not exceed 0.2-0.5 95 per year. If the magnet was subjected to magnetic stabilization, it is possible to reduce the irreversible reduction of the magnetic induction to hundredths of a percent. Magnetic induction can be completely renewed by further magnetization.

In terms of lifting capacity, spindle supports on permanent magnets made of supercritical materials with a coercive force of 300-500 kA/m and an inductance of 1.5 T can significantly exceed aerostatic spindle supports.

Spindle support on permanent magnets does not consume gas to inflate the support, and therefore, this support is energy-saving.

The problem to be solved is such an improvement of the spindle support of the prototype, which

Zo provides for the replacement of the kerosene lubricating layer of the aerostatic spindle support by the magnetic field of power magnetic suspensions with the possibility of controlling the radial position of the spindle support shaft using permanent magnets.

This is achieved by the fact that in the spindle support on permanent magnets, which includes sensors for the position of the support shaft, power magnetic repulsors, a device for automatic control of the position of the support shaft, according to the invention, the shaft of the spindle support is made of a component and includes an output shaft, a bearing shaft and a shank, according to at the edges of the supporting shaft, shaft magnets are installed in the form of hollow cylinders with poles on the inner and outer side surfaces in the screens, in the bushings installed in the spindle support housing on permanent magnets, above the shaft magnets in the B-B and B-B sections of the spindle support along the axes HROBUB coordinate systems and

Four power magnetic repulsors are installed in the HVOVUV, each power magnetic repeller includes a permanent magnet installed in a screen made of magnetic material, a piezoelectric motor installed in a ceramic insulator and an adjusting screw, and the permanent magnets of the power magnetic repellers are directed to the poles of the same magnets shaft, power magnetic repulsors and shaft magnets, which are installed in one section of the support, form a power magnetic suspension of the spindle support shaft on permanent magnets, in the housing of the spindle support on permanent magnets in the cross-section along A-A above the output shaft in a ceramic sleeve along the semi-axes XA and -UA coordinate systems XO, the axes of which are parallel to the axes of the coordinate systems ХРОБУБ and ХВОВУВ, sensors of the position of the spindle support shaft on permanent magnets are installed, the device for automatic control of the position of the spindle support shaft on permanent magnets includes a encoder, the first differential amplifier of the misalignment signal, the second differential misalignment signal amplifier, first backlash gauge, second backlash gauge, amplifiers, on-off switch, piezoelectric motors of power magnetic repulsors, and spindle support shaft position sensors on permanent magnets are electrically connected to piezo isoelectric motors of power magnetic repulsors, and the output of the encoder is connected to the first inputs of the first differential amplifier of the misalignment signal, the second differential amplifier of the misalignment signal, the sensor of the position of the shaft of the spindle support on permanent magnets, installed along the XA half-axis of the HOMA coordinate system, connected to the first meter of the gap, and its output is connected to the second input of the first differential amplifier of the mismatch signal, the first and second outputs of the first differential amplifier of the mismatch signal are connected to the inputs of the amplifiers, the outputs of the amplifiers through the "on-off" switches. connected to piezoelectric motors of power magnetic repulsors installed along the ХР and ХВ axes of the ХРОБУБ and ХВОВУВ coordinate systems, a sensor of the position of the spindle support shaft on permanent magnets, installed along the U semi-axis of the ХОМ coordinate system, connected to the second gauge of the amount of the gap, and its output is connected to the second input of the second differential amplifier of the mismatch signal, the first and second outputs of the second differential amplifier of the mismatch signal are connected to the inputs of the amplifiers, the outputs of the amplifiers through the "on-off" switches. connected to piezoelectric motors of force magnetic repulsive in coordinate systems established along the Ub and B axes

Khbobub and Khvovuv,

This is also achieved by the fact that in sections along B-B and G-G along the axes of the HROBUB coordinate system and

Groups of parallel-connected power magnetic repulsors are installed in the HVOVUs.

The causal relationship between the claimed technical solution and the achievable technical result is as follows.

In Fig. 1 shows a spindle support on permanent magnets, the shaft 2, 3, 4 of which consists of a bearing shaft 2 and an output shaft and shank 4 coaxially connected to it. All shafts 2, 3, 4 have the same diameter. On the edges of the supporting shaft 2, the magnets of the shaft 8 are installed in the screens. Power magnetic repulsors 11 are installed in the body 1 of the support in sections along B-B and B-B above the magnets 8 of the shaft. Their permanent magnets 9 are moved by piezoelectric motors 13. The poles of the magnets 13 are directed to the poles of the same names of the magnets 8 of the shaft. B - B. Magnets 13 of power magnetic repellers 11 are installed with a gap Iz relative to the magnets 8 of the shaft.

As you know, the poles of magnets of the same name repel each other. Consider the force of repulsion between the power magnetic pusher 11 and the shaft magnet. Magnets 9 of power magnetic repellers 11 are located in screens 12, which are made of magnetic material. These screens 12 are a magnetic conductor, the magnetic flux outside of which can be neglected. Therefore, the magnetic fluxes are concentrated in the gaps between the open poles of the magnets U of the power magnetic repellers 11 and the magnets 8 of the support shaft.

The force of repulsion between the power magnetic pusher 11 and the magnet 8 of the shaft is calculated by the formula (Y.M. Pyatyn, Permanent magnet! - M.: Znergia, 1980)

E - VmvidVmvala?a from 2 vot z/ om Ya

Koo); where: Ohm - magnetic stiffness of magnets 9 of the power magnetic repeller and magnets 8 of the shaft;

Ii-- the size of the gap between the repeller magnet and the guide magnet; But - magnetic constant;

Vuvid and Vuvala - induction of the magnets of the power magnetic repeller and the magnet of the shaft;

To them - Iimnid Z Imvala y? - the average length of the magnets of the power magnetic repeller and the shaft magnet; Zp. the area of the magnet poles. The area of the magnet 8 of the support shaft is equal to the area of the magnet 9 of the stapler. -uv

At the time when the difference in the force of repulsion E from the force magnetic repeller installed along the -UE half-axis of the KhROBU coordinate system" in the cross-section along B-B of the support and the shaft magnet, and the force of repulsion E from the force magnetic repeller installed along the half-axis -- y5 of the HROBUB coordinate system in the B-B section of the support and the magnet shaft will be equal to the radial load in the B-B section of the spindle support on permanent magnets, the support shaft will occupy a new position. At the same time, the force of repulsion between these magnets with their magnetization M-1.5927105, magnetic induction 2 T, and I3--50 μm is equal to 1313 N. With the same parameters of the magnets and Iz-40 μm, it is equal to 2052 N. This means that the stiffness of one power magnetic suspension is 73.9 N/μm.

To prevent radial displacement of the spindle support shaft on permanent magnets, it is equipped with a device for controlling the position of the support shaft. This device, by changing the gaps between the magnet 8 of the shaft and the magnets 9 of the power magnetic repulsors by the piezoelectric motors 13 of the repulsors, constantly compensates for the radial load on the support shaft and prevents its displacement.

The force of repulsion between the magnet 8 of the shaft and the magnetic force repellers is determined by their magnetic inductions, the plane of the poles, the average length and the gap between them.

The invention is explained with drawings.

Fig. 1 Spindle support on permanent magnets (axial section).

Fig. 2. Power magnetic suspensions in cross-sections along B-B and B-B supports.

Fig. 3. Sensors of clearances in cross-sections A-A of the support.

Fig. 4. Functional diagram of the device for automatic control of the position of the spindle support shaft on permanent magnets.

Fig. 5. Power magnetic suspensions are formed by groups of power magnetic repulsors in the B-B and B-B sections of the support.

Spindle support on permanent magnets (Fig. 1) includes a body 1 and component shaft 2, 3, 4 of a spindle support on permanent magnets, which consists of a bearing shaft 2 and coaxially connected to it and the same diameter output shaft C and shank 4.

In the housing 1 of the spindle support in the ceramic bushings 5 in the cross-section along A - A of the support along the semi-axes

ХХА In its pit of the HOMA coordinate system (Fig. 3), sensors for the position of the spindle support shaft are installed.

Ceramic bushings 5 are insulators of sensors b, and also weaken the effect of an external magnetic field on these sensors. Sensors b of the position of the shaft of the spindle support are used to measure the gaps between the bases of the sensors 6 and the output shaft Z to ensure the stabilization of the radial position of the shaft 2, 3, 4 of the spindle support on permanent magnets.

On the edges of the supporting shaft 2, in the insulators 7, the magnets 8 of the shaft are installed, which are made in the form of hollow cylinders with poles on the inner and outer side surfaces. Screen 7 is made of a magnetic material (permunder) (Y.M. Pyatyn. Permanent magnet!:

Directory. - M.: Znergiya, 1980) with high magnetic permeability (260,000), high saturation induction (V; i 10 T) and ensure the concentration of the magnetic field between the magnets 8 of the shaft and the magnets 9 of the force magnetic repellers 11, and also prevent the penetration of magnetic scattering fluxes in the output shaft C and further under the sensors of 6 gap sizes.

In the B-B and B-B cross-sections of the spindle support in the bushings 10, power magnetic

From repulsors 11 with a controlled force of repulsion between these repulsors 11 and magnets 8 of the shaft. Each power magnetic repeller 11 includes a magnet 9 made of a closed magnetic material, for example, ferrite or a rare-earth magnetic material with a coherency force of up to 400 KA/m and an energy of up to 25,000 J/m3. Such magnets do not undergo demagnetization in strong magnetic fields (Y.M. Pyatyn. Permanent magnet!: Reference book. -

M.: Znergia, 1980).

The magnets 9 of the power magnetic repellers are installed in the screens 12, which are made of a magnetic material, which also ensures the concentration of their magnetic flux in the gaps between the magnet 8 of the shaft and these magnets 9.

The magnets U are moved by piezoelectric motors 13. Piezoelectric motors 13 are installed in insulators 14.

The adjusting screw 15 serves to set the initial value of the gap between the magnet 9 of the power magnetic repeller and the magnet 8 of the shaft, and therefore to set the initial force of repulsion between them. Magnets 9 and magnets 8 of the shaft are directed to each other by poles of the same name.

In the cross-sections of the support along B-B and B-V along the axes of the HROBUB and ХВОВУВ coordinate systems (Fig. 2), four power magnetic repulsors are installed, which in these sections of the shaft with 8 magnets of the shaft form power magnetic suspensions 16. At the same time, the axes of the coordinate systems ХРОБУБ and ХВОВУВ are parallel to the axes of the XO coordinate system". Power magnetic suspensions 16: - keep the shaft 2, 3, 4 of the support in a balanced state; - prevent the displacement of the shaft 2, 3, 4 of the support from the given position under the influence of radial load.

The device 17 for automatic control of the position of the shaft of the spindle support on permanent magnets (Fig. 4) includes a setter 18, which serves to set the specified value of the gaps under the sensors 6 of the values of the gaps established along the semi-axes XX" and Х-UA of the HOMA coordinate system in the section along A- And supports (Fig. 3).

From the output of the encoder 18, the signal enters the first inputs of the first differential amplifier 19 of the mismatch signal, the second differential amplifier 20 of the mismatch signal.

Differential amplifiers 19 and 20 produce mismatch signals that are proportional to the 60 values of the gaps under the corresponding sensor b of the shaft position from the values of these gaps specified by the encoder 18. Signals from sensors b of the position of the support shaft are received at the inputs of the first gauge 21 of the amount of the gap and the second gauge of the amount of the gap 22. The signals of the meters 21 and 22 are supplied to the second inputs of the differential amplifiers 19 and 20 of the mismatch signals, respectively. Microdisplacement gauges are used as gauges of gap sizes, the measurement error of which does not exceed 10-3-10-- the size of the gap being measured (Grynevych B.F. Izmeritelnye kompensatsionno - bridge devices with capacitive sensors. - Kyiv.: Naukova Dumka, 1987).

From the outputs of the first differential amplifier 19 of the mismatch signal, the signal enters the inputs of the amplifiers 23 and 24, and from their outputs through the switch 25 - to the piezoelectric motors 13 of the power magnetic repulsors installed along the semi-axes of the "Xe and -XB, "XV and -XV systems coordinates

ХБОБУБ и ХВОВУВ, Piezoelectric motors 13 of power magnetic repellers 11, which are installed along one axis of coordinate systems, are powered in antiphase. Depending on the direction of the change in the clearance, the magnet 9 of one of the power magnetic repellers approaches the magnet 8 of the shaft and increases the repulsion force, and the second one moves away from the magnet 8 of the shaft and reduces the repulsion force. As a result, shaft 2, 3, 4 will take a given position along this coordinate axis under the action of repulsive forces.

From the outputs of the second differential amplifier 20 of the mismatch signal, the signal enters the inputs of the amplifiers 26 and 27, and from their outputs through the switch 25 - to the piezoelectric motors 13 of the power magnetic repulsors 11, installed along the semi-axes 5 and -UB, -уВ8 and -УВ systems coordinates ХРОБУБ and ХВОВУВ, 28 - the faceplate, which is installed on the output shaft 4.

At the same time, the output of the encoder 18 is connected to the first inputs of the first differential amplifier 19 of the misalignment signal and the second differential amplifier 20 of the misalignment signal, the sensor b of the position of the spindle support shaft on permanent magnets, installed along the -XA half-axis of the HOMA coordinate system, is connected to the first meter 21 of the gap value, and its output is connected to the second input of the first differential amplifier 19 of the mismatch signal, the first and second outputs of the first differential amplifier 19 of the mismatch signal are connected to the inputs of amplifiers 23 and 24, the outputs of amplifiers 23 and 24 through switches 25 "on .-off." connected to piezoelectric motors 13 power magnetic

From the pushers 11, installed along the X5 and XV axes of the CHORU and ХВОВУВ coordinate systems, the sensor 6 of the position of the spindle support shaft on permanent magnets, installed along the semi-axis В of the ХОХУ coordinate system, is connected to the second gauge 22 of the amount of the gap, and its output is connected to the second input of the second differential amplifier 20 of the mismatch signal, the first and second outputs of the second differential amplifier 20 of the mismatch signal are connected to the inputs of amplifiers 26 and 27, the outputs of amplifiers 26 and 27 through switches 25 "on-off." connected to piezoelectric motors 13 of force magnetic repulsors 11, installed along the axes Y and B of the X»OBUB and ХВОВУВ coordinate systems,

The permanent magnet spindle support works as follows. Switches 25 "on - off" are set to the "on" position. and connect the gauges 23, 24, 26, 27 to the piezoelectric motors 13 of the power magnetic repulsors 11. A pair of piezoelectric motors 13 of the power magnetic repulsors, installed along one coordinate axis, is oppositely connected to the corresponding piezoelectric motors.

At the output of the encoder 18, a voltage is set, which is equal to the output voltages of the gauges 211122 at the calculated value of the gap under the position sensors 6 of the shaft 2, 3, 4 of the spindle support.

According to the readings of the gauges 21 and 22 of the gap values, the adjusting screws 15 move the magnets 8 of the power magnetic repulsors 11, and therefore the shafts 2, 3, 4 of the support, under the sensors 6 of the position of the support shaft, installed in the cross-section along A-A of the support, the calculated values are set gaps

Let the gap under the radial load sensor b of the position of the support shaft, installed along the -X" half-axis of the X'OLU coordinate system? in the cross-section along A-A of the spindle support on the permanent magnets of the support, become larger. Consequently, the voltage at the second input of the differential amplifier will increase 19 As a result, a potential difference occurs at the output of the differential amplifier 19. The voltage from the outputs of the differential amplifier 19 through the amplifiers 23 and 24 is supplied to the piezoelectric motors 13 of the force magnetic repulsors 11, installed along the X5 and XV axes of the KhROBUB and KhVOVUV coordinate systems in sections along B -B and B-B supports.

As a result, the piezoelectric motors 13 of the power magnetic repulsors 11 installed along the semi-axes -X5 and -XV are lengthened. The gaps between the magnet 8 of the shaft and the magnets 9 of the power magnetic 60 repulsors are reduced, and therefore the repulsive force between them increases.

Piezoelectric motors 13 of power magnetic repulsors 11, installed along the semi-axes -ХБ and -ХВ are shortened. The gaps between the magnets 8 of the shaft and the magnets 9 of the power magnetic repellers increase, and the force of repulsion between them decreases.

Under the action of repulsive forces, the shaft 2, 3, 4 of the support will shift in the direction of the semi-axes "Xe" and "XV" and will occupy the initial position.

To increase the lifting force and rigidity of the spindle support on permanent magnets, four groups of four groups 29, 30, 31, 32 can be installed on permanent magnets in the cross-sections of the support along B-B and B-V along the axes of the HROBUB and HVOVUV coordinate systems (Fig. 5). , 33, 34, 35, 36 parallel-connected power magnetic repellers, which form power magnetic suspensions with 3 magnets of 8 shafts.

Each group of force magnetic repulsors is installed symmetrically relative to the axes of the mentioned coordinate systems ХОБУБ and ХВОВУВ,

Claims (1)

FORMULA OF THE INVENTION 15 1. Spindle support on permanent magnets, which includes sensors for the position of the support shaft, powerful magnetic repulsors, a device for automatic control of the position of the support shaft, which is distinguished by the fact that the shaft of the spindle support is made of a component and includes an output shaft, a supporting shaft and a shank, along the edges of the supporting shaft shaft magnets in the form of 20 hollow cylinders with poles on the inner and outer side surfaces are installed in the screens, in the bushings installed in the spindle support housing on permanent magnets, four power magnetic repellers are installed above the spindle support shaft magnets along the axes of the rectangular coordinate system, each power magnetic repeller includes a permanent magnet installed in a screen made of magnetic material, a piezoelectric motor installed in 25 ceramic insulator, and an adjusting screw, and the permanent magnets of the power magnetic repellers are directed by their poles to the poles of the same names of the shaft magnets, the power magnetic repellers and the magnet in ala, which are installed in one section of the support, form a force magnetic suspension of the shaft of the spindle support on permanent magnets, in the housing of the spindle support on permanent magnets in a ceramic sleeve along the semi-axes of the rectangular coordinate systems, the axes of which are parallel to the axes of the coordinate systems along which the power magnetic repellers are installed and installed sensors of the position of the spindle support shaft on permanent magnets, the device for automatic control of the position of the spindle support shaft on permanent magnets includes a positioner, the first differential amplifier of the misalignment signal, the second differential amplifier of the misalignment signal, the first gauge of the amount of the gap, the second gauge of the amount of the gap 35, amplifiers, a switch "on-off", piezoelectric motors of power magnetic repellers, and sensors of the position of the spindle support shaft on permanent magnets are electrically connected to piezoelectric motors of power magnetic repellers, and the output of the encoder is connected to the first inputs of the first differential amplifier of the mismatch signal, the second differential amplifier of the mismatch signal, sensors 40 of the position of the spindle support shaft on permanent magnets are connected to the gauges of the gap, and their outputs are connected to the second inputs of the first and second differential amplifiers of the mismatch signal, the first and second outputs the first and second differential amplifiers of the mismatch signal are connected to the inputs of the amplifiers, the outputs of the amplifiers are connected to the "on-off" switches. connected to piezoelectric motors of power magnetic repulsors. 45 2. Spindle support on permanent magnets according to claim 1, which is distinguished by the fact that groups of parallel-connected power magnetic repulsors are installed along the axes of rectangular coordinate systems above the shaft magnets. B VA And I, etc 25.5 Z 15 Teh pany child BA schi. On ХХ ней ли вх рез В ВЙ Ha . ; i KIM pl DTEK MA 7 --- - i Aa KAK IYA and sphere TI OLEIYA /e rlt g she Ne nka ZO TA u ek -e KE k GO E ikh i ki n- Fig. 1 a - with ТЯ 5-5 ts v-v i-y jan w--h NK r 0 ! o u de Be sho h-shUk (3) t Maky Mo A we ZY ; Vr ak aa ik shchi sho M 0 s and chidnnyakh. and Y tok iy I 5) - I MV IB BM Sh aa SOKY zv shki Fig. 2 (c) with g Aga t as nyu, . kan o v SYA 2 ana on ona SHIA -V nn u kn man au ya r kt ia V E me zh Y Dr, m ra A y i me Y y U, menya YAN OK se su z yuyu " - y pov -4 Fig. With the ownership of Renault au a vach yaya NYA -e5 rya - sil sov vo Sri pa o I i M Mad nn tu 2-80 fe tt 20 ot di y o. ' shi z ! ES skrya YUK 070overNt and Beh lice! nn pomannnmn live NIK! and g and - no ŽY. i in ko shk BZ DZ. KK, A - 3 N Z vh i5 and shi fen she: TSI nya vini shi sho 22 Sho shoi Fig. 4 B-B o y7- she ШЯ shah ke oh - | | 3 in CC, Ex A DU --- n and shchi MYTO" VAV Yesttva What rozy Z kashe ch- sho ud v; 4 with A - ku p z HO Ah M IZ tk, Ko s: dyny OVU, in I She nnya Mov shin fig. 5 00 Komputernaverstka!, Skvortsova.dG (00000000 State Intellectual Property Service of Ukraine, 45 Urytskogo St., Kyiv, MSP, 03680, Ukraine SE "Ukrainian Institute of Industrial Property", Glazunova St., 1, Kyiv - 42 , 01601