RU2586411C1 - Automated meter of output characteristics of helical springs - Google Patents

Abstract

FIELD: measuring equipment.

SUBSTANCE: distinctive feature of disclosed automated meter output characteristics of helical springs is that it includes a step motor, output shaft of which is connected with input shaft of measurement unit, which is installed on support, step motor control module, second electromagnet with core arranged symmetrically and upside first on second end of balance arm, traction of second and first electromagnets are connected in series, in centre of symmetry of which a mirror optical system control process control module, input bus of which is connected to output bus recorder with its output connected to first input of control process control module, second input is connected to output of comparator, and first output is connected to control input of key, second output is connected to a setting input of integrator, third output is connected with setting input analogue-to-storage unit, fourth output is connected to launching input of analogue-to-digital converter.

EFFECT: high efficiency of operation.

8 cl, 2 dwg

Description

The invention relates to the field of measuring technology and can be used to automatically determine the magnitude of the moment created by a flat spiral spring or torsion bar with an unlimited twist angle, a flat spring working on bending or torsion, selective selection of springs close in characteristics with a given accuracy, quality control of technological steps the process of their manufacture.

A device for controlling the torque of coil springs according to A.S. USSR SU No. 1081446, G01L 3/10, publ. 03/23/1984, Bulletin No. 11, containing a base, a socket, a twisting spindle with a control lever rigidly fixed on it, a sensor and an electromechanical drive associated with a twisting spindle.

Device for measuring the moment of coil springs according to A.S. USSR No. 777504, G01L 3/10, publ. 11/07/1980, Bulletin No. 41 contains a movable part installed in the housing using stretch marks, an angular position sensor for the movable part, an amplifier, a torque sensor in the form of a permanent magnet fixed to the movable part, and fixed coils and a stiffener for stretch marks.

Semiautomatic device for checking the torque of coil springs according to A.S. USSR No. 4333367, G01L 3/10, publ. 06/25/1974, Bulletin No. 23 contains a sleeve freely mounted on a spinning spindle, carrying a leash with a dog that engages with the ratchet spindle wheel, and two stop cams, which determine the angular descent of the tested spring in turn, mechanically interacting with rigid tilting stops , two electromagnetic sensors, two cargo levers.

Test bench for output characteristics of coil springs according to A.S. USSR No. 1732196, G01L 3/10, publ. 05/07/1992, Bulletin No. 17 contains an angle sensor, a pulse counter, a control unit, a drive, a comparator, an integrator, an analog-to-memory unit, a current control unit, an analog-to-digital converter, a decoder, a multiplexer, a start unit, a delay unit, a drive , light source, photodetector, disk with a hole, angle sensor, support, electromagnetic frame, input shaft, output shaft, recorder.

The disadvantages of these devices include the presence of errors in the mechanisms for setting and counting the moments of twisting of the springs due to friction between moving structural members, the difficulty of measuring the parameters of springs and torsion bars with a small moment and a twist angle of more than one revolution, the lack of automated collection of information points on a given range of working angle springs, processing information about the quality of the springs and selecting springs with a registrar with similar characteristics, which is important for measuring instruments.

The closest in technical essence to the claimed technical solution, taken as a prototype, is an automated stand for monitoring the output characteristics of coil springs according to invention patent No. 2526553, publ. 08/27/2014, bull. No. 24, which contains the output shaft of the stand connected to the clamp of the inner end of the test spring, the clamp of the outer end of the test spring connected to the input shaft of the stand connected through a gearbox to an electric motor that is connected to the output of the drive control unit, a reversing unit, a decoding end decoder, analog-to-digital converter, recorder, analog-to-memory unit, current control unit, pulse counter, the input of which is connected to the output of the angle sensor, and the information output with the end decoder is measured a comparator, the input of which is connected to a photodetector connected to the light source through the mirror of the optical system, an integrator, the output of which is connected to the input of the analog-storage unit, the output of which is connected to the input of the current control unit, the information output of which is connected to the input of the analog-to-digital converter , the information output of which is connected to the input of the recorder, and the trigger output with the trigger input of the recorder, adjusting device, rocker arm, movable balancing weight, traction winding an electromagnet connected to the control outputs of the current control unit, an electromagnet core mounted on the first arm of the rocker arm, which is rigidly fixed to the output shaft of the stand, and on the second arm of the rocker arm there is an optical system mirror and a movable balancing weight mechanically connected to the adjustment device, key, output which is connected to the integrator input, a measurement start block, a clutch assembly that connects the input shaft of the angle sensor to the input shaft of the stand, and its control input is connected nen to the control input of the key, the first input of the first AND element, the output of which through the reversing unit is connected to the output of the drive and electric motor control unit, and the output of the clutch control unit, the first input of which is connected to the first output of the measurement start unit, and the second input is connected to the installation inputs pulse counter, analog-memory unit, integrator and the output of the first OR element, the first input of which is connected to the second output of the measurement start block, the third output of which is connected to the first input the drive control unit, and the second input of the first OR element is connected to the output of the second AND element, the first input of which is connected to the output of the NOT element, the second input is connected to the output of the recorder and the first input of the third AND element, the output of which is connected to the second input of the drive control unit, and the second input is connected to the output of the decoder of the end of the measurement, the input of the element NOT and the first input of the second OR element, the second input of which is connected to the clock output of the pulse counter, and the output is connected to the third input of the control unit the drive and the first input of the fourth AND element, the output of which is connected to the triggering input of the analog-to-digital converter, and the second input is connected to the output of the comparator, to the second input of the first AND element, the key input and the triggering input of the analog-memory unit, and the input shafts of the angle sensor and the clutch assembly, the input shaft of the stand and the output shaft of the stand are located on supports and coaxially.

The disadvantages of the prototype include insufficient measurement accuracy due to increased friction in the bearings of the output shaft, the low performance of the servo drive having the coupling, the insufficient measurement range and the complexity of the scheme for setting the incremental angle of rotation of the spring in the control process, insufficient dynamic characteristics of the control process.

The technical result to which the invention is directed is to increase the efficiency of the bench: increasing the accuracy of the measurement, reducing friction in the bearings, expanding the measuring range by introducing a second electromagnet with a core, increasing productivity by improving the dynamic characteristics of the control process by introducing a stepper motor and restrictive emphasis on the movement of the arms of the rocker arm when it is balanced.

The technical result is achieved by the fact that in an automated measuring instrument of the output characteristics of coil springs, containing an analog-to-digital converter, the information output of which is connected to the input of the recorder, and the triggering output with the triggering input of the recorder, a comparator, the input of which is connected to the photodetector, and the output is connected to the control input analog-memory unit and the input of the key, the output of which is connected to the input of the integrator, the output of which is connected to the input of the analog-memory unit, the output of which connected to the input of the current control unit, the information output of which is connected to the input of an analog-to-digital converter, and the current control outputs are connected to the inputs of the measuring unit, which includes a clamp of the inner end of the tested spring, a clamp of the outer end of the tested spring, input shaft, output shaft, connected to the beam, at the end of the shoulder of which is mounted the core of the electromagnet, the traction winding of the electromagnet, a moving balancing weight, a photodetector connected to the light source through the mirror op system, it is new that a stepper motor is introduced into it, the output shaft of which is connected to the input shaft of the measuring unit, which is mounted on a support, a stepper motor control module, a second electromagnet with a core located symmetrically and inverted to the first at the second end of the beam, traction windings of electromagnets are connected in series, in the center of symmetry of which a mirror of the optical system is installed, a control module for the control process, the input bus of which is connected to the output bus the recorder, the output of which is connected to the first input of the control module for controlling the control process, the second input is connected to the output of the comparator, and the first output is connected to the control input of the key, the second output is connected to the installation input of the integrator, the third output is connected to the installation input of the analog-memory unit, the fourth the output is connected to the triggering input of the analog-to-digital converter, and the output bus is connected to the input bus of the stepper motor control module, the output bus of which is connected to the input bus of the stepper motor th engine.

In an automated meter of the output characteristics of spiral springs in the measuring unit, the clamp of the outer end of the spring contains a support disk fixed along the axis of symmetry to the inner end of the input shaft of the measuring unit and connected to the support plate, and through the friction gasket is pulled by a friction clutch screw with a movable disk, which is equipped with a movable plate with a correction screw connected to the base plate, and on which two clamping elements of the outer end p are eccentrically perpendicular the rods along the radius and perpendicular to them, two racks of the axis of the cam of the clamping elements of the outer end of the spring are symmetrical with respect to the cam of the clamping elements of the outer end of the spring at a distance from the axis of rotation of the movable disk equal to the radius of the outer end of the spring through which the axis of the cam of the clamping elements of the outer end of the spring passes which the cam is located with the possibility of touching the clamping elements of the outer end of the spring for their symmetrical expansion - clamping by turning the handle of the cam axis pressure elements of the outer end of the spring, and the clamp of the inner end of the spring contains clamping elements of the inner end of the spring, fixed to the beam symmetrically and coaxially with the output shaft, on which the fixed sleeve is fixed, connected orthogonally to the axis of the balancing weight, on which the movable balancing weight is mounted, while the movable the table is mounted on columns and connected to the first ends of the return springs, and their second ends are connected together with the stops and columns of the movable table on a fixed support, and The large and large cams are fixed on the axis of the small and large cams and are oriented relative to each other with the possibility of touching for their symmetrical expansion - clamping the clamping elements of the inner end of the spring with a small cam and for raising - lowering the movable table from the stops with a large cam by turning the handle of the small axis and big fists.

An automated measuring instrument for the output characteristics of coil springs uses a point laser as a light source.

An automated measuring instrument for the output characteristics of coil springs uses a photoresistor as a photodetector.

In an automated meter of output characteristics of spiral springs, the clamping elements are made of elastic material.

In an automated meter of the output characteristics of spiral springs, the supports of the output shaft, depending on the accuracy of the measurement, are made on the basis of stone or knife supports.

In an automated meter of output characteristics of spiral springs, the movable table has an installation recess for installing the spring on the outside and centering on the inside diameters.

An automated measuring instrument for the output characteristics of coil springs contains support arms of the rocker arm, which has the ability to touch them.

The invention is illustrated in FIG. 1 and FIG. 2, where:

FIG. 1 is a structural-functional diagram of an automated meter of output characteristics of a spiral spring

figure 2 - design of the measuring unit

Here:

1 - measuring unit;

2 - clamping element of the inner end of the spring;

3 - clamping element of the outer end of the spring;

4 - input shaft of the measuring unit;

5 - core of the first electromagnet;

6 - rocker;

7 - balancing load;

8 - analog-to-digital Converter;

9 - the registrar;

10 - analog storage unit;

11 - current control unit;

12 - a comparator;

13 - photodetector;

14 - light source;

15 - a mirror;

16 - key;

17 - integrator;

18 - control process control module;

19 - module control the stepper motor;

20 - stepper motor;

21 - output shaft of a stepper motor;

22 - a support plate;

23 - movable table;

24 - column;

25 - return spring;

26 - emphasis;

27 - motionless support;

28 - a small cam;

29 - a large cam;

30 - output shaft;

31 - the second traction winding of the electromagnet;

32 - the core of the second electromagnet;

33 - fixed sleeve;

34 - axis of the balancing weight;

35 - test spring;

36 - the first traction winding of an electromagnet;

37 - reference disk;

38 - a friction lining;

39 - movable disk;

40 - cam clamping elements of the outer end of the spring;

41 - axis of the cam clamping elements of the outer end of the spring;

42 - handle axis of the cam clamping elements of the outer end of the spring;

43 - correction screw;

44 - movable plate adjusting screw;

45 - clutch clamping screw;

46 - a rack of an axis of a cam of clamping elements of the external end of a spring;

47 - axis of the small and large cams;

48 - handle axis of the small and large cams;

49 - support;

50 - restrictive emphasis on the movement of the arm of the rocker arm.

An automated meter of the output characteristics of coil springs contains an analog-to-digital converter 8, the information output of which is connected to the input of the recorder 9, and a trigger output with a trigger input of the recorder 9, a comparator 12, the input of which is connected to the photodetector 13, and the output is connected to the control input of the analog-memory block 10 and the input of the key 16, the output of which is connected to the input of the integrator 17, the output of which is connected to the input of the analog-memory block 10, the output of which is connected to the input of the block 11 is controlled I have a current, the information output of which is connected to the input of the analog-to-digital converter 8, and the current control outputs are connected to the inputs of the measuring unit 1, which includes a clamp on the inner end of the test spring, a clamp on the outer end of the test spring, input shaft 4, output shaft 30, connected to the beam 6, at the end of the shoulder of which is mounted the core of the electromagnet 5, the traction winding of the electromagnet 36, a moving balancing weight 7, a photodetector connected to the light source 14 through the mirror 15 of the optical system, a new motor 20, the output shaft 21 of which is connected to the input shaft 4 of the measuring unit, which is mounted on the support 49, a stepper motor control module 19, a second electromagnet 31 with a core 32 located symmetrically and inverted to the first at the second end of the rocker arm 6, the traction windings of the second 31 and the first 36 electromagnets are connected in series, in the center of symmetry of which a mirror 15 of the optical system is installed, a control module for the control process 18, the input bus of which is connected to the output bus of the recorder 9, in the output of which is connected to the first input of the control process control module 18, the second input is connected to the output of the comparator 12, and the first output is connected to the control input of the key 16, the second output is connected to the installation input of the integrator 17, the third output is connected to the installation input of the analog-memory unit 10 , the fourth output is connected to the triggering input of the analog-to-digital converter 8, and the output bus is connected to the input bus of the control module of the stepper motor 19, the output bus of which is connected to the input bus of the stepper motor Yelaya 20, in the measuring unit 1, the clamp of the outer end of the test spring contains a support disk 37 fixed along the axis of symmetry to the inner end of the input shaft 4 of the measuring unit 1 and connected to the support plate 22, and, through the friction pad 38, is tightened by the friction clutch clamp screw 45 with the movable disk 39 which is equipped with a movable plate of the adjustment screw 44 with a correction screw 43 connected to the support plate 22, and on which two clamping elements 3 of the outer end of the spring are mounted eccentrically perpendicularly along a mustache and two posts 46 of the cam axis of the clamping elements of the outer end of the spring symmetrically to the cam 40 of the clamping elements of the outer end of the spring at a distance from the axis of rotation of the movable disk 39, equal to the radius of the outer end of the test spring 35 through which the axis 41 of the cam of the clamping elements of the outer the end of the spring, on which the cam 40 of the clamping elements of the outer end of the spring is located with the possibility of touching the clamping elements 3 of the outer end of the spring for their symmetrical expansion ma - clamping by turning the handle 42 of the axis of the cam of the clamping elements of the outer end of the spring, and the clamp of the inner end of the test spring contains clamping elements 2 of the inner end of the spring, fixed to the beam 6 symmetrically and coaxially with the output shaft 30, on which is fixed a fixed sleeve 33 connected orthogonally with the axis 34 of the balancing weight, on which the movable balancing weight 7 is mounted, while the movable table 23 is mounted on the columns 24 and connected to the first ends of the return springs 25, and their second ends are connected The cams are fixed together with the stops 26 and the columns 24 of the movable table 23 on the fixed support 27, and the small 28 and large 29 cams are fixed on the axis 47 of the small and large cams and are oriented relative to each other with the possibility of touching for their symmetrical expansion - clamping of the clamping elements 2 of the inner end springs with a small cam 28 and for lifting - lowering the movable table 23 from the stops 26 by the large cam 29 by turning the handle 48 of the axis of the small and large cams.

In an automated meter of output characteristics of coil springs, a point laser is used as the light source 14.

In an automated meter of output characteristics of coil springs, a photoresistor is used as a photodetector 13.

In the automated meter of the output characteristics of spiral springs, the clamping elements of the inner 2 and outer 3 ends of the spring are made of elastic material.

In an automated meter of the output characteristics of spiral springs, the supports of the output shaft 30, depending on the accuracy of the measurement, are made on the basis of stone or knife supports.

In an automated meter of output characteristics of spiral springs, the movable table 23 has an installation recess for installing the test spring 35 on the outside and centering on the inside diameters.

An automated meter for the output characteristics of coil springs contains supports 50 of the arms of the rocker arm, which has the ability to touch them.

Automated meter output characteristics of coil springs is as follows. First, we adjust the friction clutch clamp screw 45 to transmit the required torque of the test spring 35 through the adjustable friction clutch (37, 38, 39) from the output shaft 21 of the stepper motor 20 and the input shaft 4 to the movable disk 39. Before balancing the measurement process, two rocker balancers are made 6, one rough, by turning the axis 34 of the balancing weight around the output shaft 30, the second exact, by moving the balancing weight 7 along the axis 34 of the balancing weight, focusing on the operation of the comparator 12 p about its indication and balancing the rocker arm 6 when the optical receiver 13 is illuminated. Next, install the test spring 35 with the inner end, inserting the inner bent end between the unclamped clamping elements 2 of the inner end of the spring and the raised movable table 23 into the mounting recess of the movable table 23. Then we turn the axis handle 48 small and large cams, removing the touch of small cam 28 with the clamping elements 2 of the inner end of the spring, and as a result, the inner end of the test spring is clamped 35. Further angular movement of the handle 48 of the axis of the small and large cams eliminates the contact of the movable table 23 with the large cam 29 and the movable table 23 is lowered to the stops 26 due to the return springs 25. This ensures the perpendicularity and alignment of the position of the test spring 35 relative to the axis of the output shaft 30, as well as its rigid, free and symmetrical fixing relative to the rocker arm 6.

Next, let loose the clamping elements 3 of the outer end of the spring cam 40 clamping elements of the outer end of the spring. We turn the handle 42 of the cam axis of the clamping elements of the outer end of the spring, eliminating the cam 40 touching the clamping elements of the outer end of the spring of the clamping elements 3 of the outer end of the spring and clamping the outer end of the test spring 35. In this case, the mechanical balance of the rocker arm 6 may be violated due to geometric manufacturing inaccuracy of the tested spring 35, errors in the installation and fixing of the inner and outer ends of the tested spring 35, which are eliminated by turning the adjustment screw m 43, the movable disk 39.

After that, we enter the number, the measuring range, the number of controlled points of the characteristics of the tested spring 35 into the registrar 9. Next, we turn on the control process at the command of the operator and at the output of the registrar 9, through the first input of the control process control module 18, a signal appears that generates signals sequentially in time : through the second and third outputs, the output of the integrator 17 and the analog-memory unit 10 is reset to zero, and through the first output, the control process control module 18 opens the key 16 for the signal passes from the comparator 12 to the integrator 17, then turns the stepper motor 20 to the first point of control of the characteristic by a series of pulses corresponding to rotation by a given angle and sets the corresponding measured moment, which is transmitted through the test spring 35 to the rocker 6, which deviates from equilibrium and abuts against the limit stop 50 of the rocker movement, and through the key 16, the integrator 17 and the analog storage unit 10 creates a smoothly increasing current in the first 36 and second 31 traction windings of the electromagnets for Compensation for the created moment. At the moment of balancing the rocker 6, the comparator 12 is activated, fixing the mechanical balance of the rocker 6 as a result of exposure to the light source 14 through the mirror 15 of the photodetector 13, turns on the analog-memory unit 10 and starts the analog-to-digital converter 8 from the fourth output of the control process 18 for fixing digital information about the value of the created moment by the compensation current in the first 36 and second 31 traction windings of electromagnets, which through the information output of an analog-to-digital conversion The pulser 8 is entered into the recorder 9 by the pulse of the end of the measurement, in which, after storing through the first input of the control module 18, the control process starts the control process of the next measuring point of the characteristics of the test spring 35 in the recorder 9. This periodic process continues until the end of the specified measuring range, those. number of measurement points. In the control process, for example, it is possible to indicate programmed parameters for monitoring the output characteristics of the test spring 35 in the form of a graph, etc., on the screen of the recorder 9 programmatically

Then, according to the program of the recorder 9, the key 16 is sequentially closed by the control process control unit 18, the information of the integrator 17 and the analog-memory unit 10 are reset, the stepper motor 20 is continuously reversed to the zero starting point of the start of the control process, which is fixed by the operation of the comparator 12 when the source 14 illuminates light through the mirror 15 of the photodetector 13.

After that, we raise the movable table 23 and expand the inner end of the test spring 35 by turning the handle 48 of the axis of the small and large cams until the clamping elements 2 of the inner end of the spring and the movable table 23 touch, and then expand the outer end of the test spring 35 by turning the handle 42 of the clamp cam axis elements 3 of the outer end of the spring, and then remove the test spring 35 from the measuring unit 1.

According to the results of the collection in the registrar 9 of information about the required sample of the tested springs 35, the registrar program for processing and selecting paired tested springs 35 with a given selection accuracy is turned on.

All blocks and modules in the meter are implemented on well-known analog and digital integrated circuits and electromechanical elements.

Thus, the inventive automated meter of the output characteristics of coil springs allows to increase the efficiency of the bench by increasing the measurement accuracy due to a decrease in the sensitivity threshold by reducing friction in the bearings of the output shaft by introducing a second electromagnet with a core, which together with the first provides a differential effect on the arms of the rocker arm when balancing and extends the measuring range of the maximum torque, the test spring is twisted, increase accuracy Measurements due to the uniqueness of fixing the inner end of the spring relative to the test to ensure perpendicularity to the output shaft and the movable section with a recess to improve performance due to an increase of dynamic performance monitoring process by entering a stepper motor and stops limiting the movement of the rocker arms.

Claims (8)

1. An automated meter of the output characteristics of coil springs, containing an analog-to-digital converter, the information output of which is connected to the input of the recorder, and the triggering output with the triggering input of the registrar, a comparator whose input is connected to the photodetector, and the output is connected to the control input of the analog-memory unit and the key input, the output of which is connected to the input of the integrator, the output of which is connected to the input of the analog-storage unit, the output of which is connected to the input of the current control unit, inf the radiation output of which is connected to the input of an analog-to-digital converter, and the current control outputs are connected to the inputs of the measuring unit, which includes a clamp of the inner end of the test spring, a clamp of the outer end of the test spring, the input shaft, the output shaft connected to the beam at the end of the arm which is installed the core of the electromagnet, the traction winding of the electromagnet, a moving balancing load, a photodetector connected to a light source through a mirror of the optical system, characterized in that a stepper motor is introduced, the output shaft of which is connected to the input shaft of the measuring unit, which is mounted on a support, a stepper motor control module, a second electromagnet with a core located symmetrically and inverted to the first at the second end of the beam, the traction windings of the second and first electromagnets connected in series, the center of symmetry of which is installed a mirror of the optical system, a control module for the control process, the input bus of which is connected to the output bus of the recorder, the output of the cat It is connected to the first input of the control process control module, the second input is connected to the output of the comparator, and the first output is connected to the control input of the key, the second output is connected to the installation input of the integrator, the third output is connected to the installation input of the analog-memory unit, the fourth output is connected to the trigger the input of the analog-to-digital converter, and the output bus is connected to the input bus of the stepper motor control module, the output bus of which is connected to the input bus of the stepper motor. 2. The automated measuring instrument of the output characteristics of coil springs according to claim 1, characterized in that in the measuring unit, the clamp of the outer end of the test spring contains a support disk fixed along the axis of symmetry to the inner end of the input shaft of the measuring unit and connected to the support plate, and through a friction pad pulled together by a friction clutch screw with a movable disk, which is equipped with a movable plate of a correction screw with a correction screw connected to the base plate, and on which an eccentric two clamping elements of the outer end of the spring along the radius perpendicular to them and two pillars of the axis of the cam of the clamping elements of the outer end of the spring symmetrically with respect to the cam of the clamping elements of the outer end of the spring at a distance from the axis of rotation of the movable disk equal to the radius of the outer end of the spring through which the axis passes orthogonally cam of the clamping elements of the outer end of the spring, on which the cam of the clamping elements of the outer end of the spring with the possibility of touching the compression elements of the outer end of the spring for their symmetrical expansion - clamping by turning the cam axis handle of the clamping elements of the outer end of the spring, and the clamp of the inner end of the tested spring contains clamping elements of the inner end of the spring, symmetrically and coaxial to the output shaft, to which the fixed sleeve is fixed, to the beam connected orthogonally with the axis of the balancing weight on which the movable balancing weight is mounted, while the movable table is mounted on columns and connected to the first the ends of the return springs, and their second ends are connected together with the stops and columns of the movable table on a fixed support, and the small and large cams are fixed on the axis of the small and large cams and are oriented relative to each other with the possibility of touching for their symmetrical expansion - clamping clamping elements of the inner the end of the spring with a small cam and for lifting - lowering the movable table from the side of the stops with a large cam due to the rotation of the handle of the axis of the small and large cams. 3. An automated meter for the output characteristics of coil springs according to claim 1, characterized in that a point laser is used as a light source. 4. An automated meter for the output characteristics of coil springs according to claim 1, characterized in that a photoresistor is used as a photodetector. 5. An automated meter for the output characteristics of coil springs according to claim 2, characterized in that the clamping elements of the inner and outer ends of the spring are made of elastic material. 6. An automated measuring instrument for the output characteristics of coil springs according to claim 2, characterized in that the bearings of the output shaft, depending on the measurement accuracy, are made on the basis of stone or knife supports. 7. An automated measuring instrument for the output characteristics of coil springs according to claim 2, characterized in that the movable table has an installation recess for installing the test spring on the outside and centering on the inner diameters. 8. An automated measuring instrument for the output characteristics of coil springs according to claim 2, characterized in that it contains bearings of the arms of the rocker arm, which has the ability to touch them.

Images