RU2311610C1 - Electro-optic device for controlling parameters of thread - Google Patents

Abstract

FIELD: inspection technology.

SUBSTANCE: device can be used for contact-free inspection of items having internal or external thread. Device has base 1 for placing items to be inspected, inspected item's fixing unit 3 provided with internal thread placed onto base 2, first coordinate table provided with longitudinal shift drive and longitudinal shift detector, first electro-optic head 17 placed onto first coordinate table and made of narrow light beam source (for example, laser with optical system), multiple element photoreceiver (for example, linear photoreceiver) and objective. Objective is mounted for provision of triangular optical connection of multiple element photoreceiver with narrow optical light source through corresponding surface of item 3. Device also has personal computer. Inputs of PC are connected with outputs of multiple element photoreceiver and of longitudinal shift detector. Output of PC is connected with longitudinal shift drive. Fixing unit 11 of item to be controlled, provided with external thread, is made in form of two-coned rest-centralizer disposed onto first coordinate table; one of cones is made for removal. Second U-shaped coordinate table is disposed onto base 1; table is provided with drive and lateral shift detector. Second electro-optic head is mounted onto second coordinate table at both sides from item 11. Unit 3 for fixing item is made in form of removable ring-shaped clamp (sleeve) provided with drive of rotation about longitudinal axis and with angular shift detector. First coordinate table is disposed onto base 1.

EFFECT: higher universality of device; ability of inspection as internal and external thread; simplified design.

2 cl, 5 dwg

Description

The invention relates to measuring technique and can be used for non-contact control of products with external or internal thread, for example, for controlling the threads of tubing and couplings (NKTM), as well as drill and casing pipes and couplings of various sizes when repairing oil equipment and wells.

Establishment of prior art.

Massive use of threaded products in the oil industry puts forward the task of creating universal and high-performance means of thread control. The means of manufacturing external and internal threads have now reached a sufficiently high degree of perfection, which cannot be said about the quality of their control. The use of advanced technology makes it possible to produce threads many times faster than controlling them [1].

The nomenclature of the used types of threads is very extensive, however, for any threads, the functional parameters are the geometric elements that determine their profile. So, for example, for threaded connections NKTM used in the oil industry, the main geometric parameters are:

- step and height of turns,

- taper profile

- the angles of inclination of the coil profile,

- the radii of the tops and bottoms of the turns,

- chamfer parameters, etc.

Known contact and non-contact means of monitoring the parameters of internal and external threads [1, 2]. However, they are characterized by low versatility and design complexity.

It is known, for example, a non-contact optoelectronic device for controlling the parameters of the thread of tubular products, containing a source and receiver of the light flux with information processing means and a scanning unit connected to the coordinate table and configured to reciprocate and rotate, and the source and receiver of the light flux with means information processing are combined into a single unit made in the form of a conoscope, and the scanning unit is made of at least two optically coupled to onoskopom channels and mirror system providing passage of the light flux from the conoscope through the channels to the outer or inner surface of the product [3].

However, such a device is characterized by design complexity.

Known optoelectronic devices for controlling the parameters of the external thread, based on the shadow method of measurement [4-6].

Such devices are characterized by low versatility and design complexity.

Known optoelectronic devices for controlling the parameters of the internal thread, based on the triangulation method of measurements [7, 8]. Such devices are also characterized by low versatility and design complexity.

The closest invention to the proposed technical essence and circuit design is an optoelectronic device for controlling thread parameters described in [8].

This device, selected as a prototype, contains a base for basing the controlled part, an attachment unit for the controlled part with internal thread, located on the base for basing the controlled part, a coordinate table equipped with a longitudinal displacement drive and a longitudinal displacement sensor, an optoelectronic head placed on the coordinate table, equipped with a rotation drive around the longitudinal axis and an angular displacement sensor and consisting of a source of a narrow light beam, for example, a laser a system with an optical system, a multi-element photodetector, for example a photo line, and a lens, the lens being mounted with the possibility of providing a triangulation optical connection of the multi-element photodetector with a narrow light beam through the corresponding surface of the controlled part with internal thread, and a personal electronic computer (PC), the inputs of which connected to the outputs of a multi-element photodetector and a longitudinal displacement sensor, and the output is connected to a longitudinal displacement drive.

The disadvantages of this device:

a) such devices are often used in the field, which requires them to be highly versatile, the ability to control the thread parameters of both pipes and couplings, which are the main objects of control. However, the device [8] does not meet this requirement;

b) to perform measurements at different angular positions of the controlled NKTM relative to the meter, it is necessary to rotate the triangulation optoelectronic head around its longitudinal axis. As a rule, the optoelectronic head is “connected” to the PC and power supplies by a number of wires (cables). To carry out the rotation of the head in the presence of wires, it is necessary to complicate the design of the device.

SUMMARY OF THE INVENTION

The invention is aimed at providing such technical results as:

- achieving the versatility of the optoelectronic device by providing the ability to control the thread parameters of parts with both internal and external threads;

- simplification of the design of the control device.

Ensuring the indicated technical results is achieved by the fact that an optoelectronic device for monitoring the parameters of the thread, containing a base for basing the controlled parts, a fastener for the controlled part with an internal thread, located on the base for basing the controlled parts, the first coordinate table equipped with a longitudinal displacement drive and a longitudinal displacement sensor, the first optoelectronic head located on the first coordinate table and consisting of a source of a narrow light beam, for example, a laser with an optical system, a multi-element photodetector, for example a photo line, and a lens, the lens being mounted with the possibility of triangulating optical communication of the multi-element photodetector with a source of a narrow light beam through the corresponding surface of a controlled part with internal thread, and a personal electronic computer (PC), the inputs of which are connected to the outputs of the multi-element photodetector and longitudinal displacement sensor, and the output is connected to the drive of the longitudinal The room also contains a fastener for the controlled part with an external thread, made, for example, in the form of a two-cone stop-centralizer placed on the first coordinate table, one of its cones being removable, and the second coordinate table having a U-shape placed on the base for basing the controlled parts and equipped with a lateral movement drive and a lateral movement sensor, a second optoelectronic head formed from optically coupled light source and receiver equipped with appropriate lenses and mounted on the second coordinate table on opposite sides of the controlled part with external thread, while the mounting unit of the controlled part with internal thread is made, for example, in the form of a removable ring clamp (sleeve) equipped with a rotation drive around the longitudinal axis and with an angular displacement sensor, the first coordinate table is placed on the base for monitoring the controlled parts, the PC inputs are connected to the outputs of the light radiation receiver, the second optoelectron a head, an angular displacement sensor and a transverse displacement sensor, and PC outputs - with a rotation drive around a longitudinal axis and a transverse displacement drive.

In addition, the rotation drive around the longitudinal axis is made, for example, in the form of a stepper motor and is equipped with support rollers interacting with a removable ring clamp (sleeve).

Verification of compliance of the claimed device with the patentability condition "novelty."

The analysis of the prior art by the authors, including a search by patent and other scientific and technical sources of information and identification of sources containing information about analogues of the device, made it possible to establish that there are no analogues characterized by features that are identical to all the essential features of the device, and the selection from the list of analogues of the prototype [8] provided for the identification of a set of essential distinguishing features of the claimed device with respect to the technical results.

The main features that distinguish the claimed device from the prototype are:

- the presence of the mounting unit of the controlled part with an external thread, made, for example, in the form of a two-cone stop-centralizer,

- placement of the stop-centralizer on the first coordinate table,

- the implementation of one of the cones of the stop-centralizer removable,

- the presence of a second coordinate table having a U-shape,

- placement of the second coordinate table on the basis for basing the controlled parts,

- the presence of the second coordinate table of the drive transverse displacement and transverse displacement sensor,

- the presence of a second optoelectronic head formed from optically conjugated light source and receiver, equipped with appropriate lenses,

- installation of the source and receiver of light radiation on the second coordinate table on different sides of the controlled part with external thread,

- the implementation of the mounting unit of the controlled part with internal thread, for example, in the form of a removable ring clamp (sleeve),

- the presence of a removable ring clamp (sleeve) of a rotation drive around a longitudinal axis and an angular displacement sensor,

- placement of the first coordinate table on the basis for basing the controlled parts,

- connection of the inputs of the PC with the outputs of the light emission receiver of the second optoelectronic head, the angular displacement sensor and the transverse displacement sensor, and the PC outputs - with a rotation drive around the longitudinal axis and a transverse displacement drive.

Besides:

- execution of a rotation drive around a longitudinal axis, for example, in the form of a stepper motor,

- the presence of the drive rotation around the longitudinal axis of the support rollers interacting with a removable ring clamp (sleeve).

The presence of these distinctive features ensures compliance of the claimed device with the patentability condition of "novelty" under the current law.

Verification of compliance of the claimed device with the condition of patentability "inventive step".

To verify compliance with the requirements of the inventive step, the authors conducted an additional search and analysis of solutions in order to identify signs that match signs that are different from the selected prototype, the results of which showed that the claimed object does not explicitly follow from the prior art established by the authors.

In other words, a comparison of the claimed device not only with the prototype, but also with other technical solutions in this and related fields of optoelectronic control and measuring equipment showed that the latter do not contain features similar to those distinguishing the claimed technical solution from the prototype.

The above allows us to conclude that the claimed device conforms to the patentability condition "inventive step" under applicable law.

A new set of essential features of the device allows to increase the versatility of the described device by providing the ability to control the thread parameters of parts with both internal and external threads, as well as to simplify the design of this device by eliminating the need for rotation of the first optoelectronic head. The above is confirmed by the information below.

Description of the device in statics.

The invention is illustrated by drawings. Figure 1-3 shows a structural diagram of the device, figure 4 shows the main electrical connections between the blocks of the device, and figure 5 explains the operation of the device when monitoring the parameters of the thread of a part with an external thread.

The optoelectronic device for monitoring the parameters of the thread contains a massive stationary horizontal base 1 for basing the controlled parts, a mounting unit 2 for mounting the controlled part 3 with an internal thread, mounted on the base 1 for basing the controlled parts and made, for example, in the form of a removable ring clamp (sleeve) 4 provided a drive 5 of rotation around a longitudinal axis and a sensor 6 of angular displacement, the first coordinate table 7, also located on the base 1 for basing the controlled parts and equipped with a drive 8 for longitudinal displacement and a sensor 9 for longitudinal displacement, the attachment unit 10 of the controlled part 11 with external thread, made in the form of a two-cone stop-centralizer with cones 12 and 13, one of the cones 13 of which is removable, the second coordinate table 14, having U-shaped placed on the base 1 for basing the controlled parts and equipped with a lateral movement drive 15 and a lateral movement sensor 16, the first optoelectronic head 17 located on the first coordinate table 7 and consisting of a source 18 of a narrow light beam, for example, a laser with an optical system 19, a multi-element photodetector 20, for example, a photo line, and a lens 21, the lens 21 being installed with the possibility of triangulating optical communication of the multi-element photodetector 20 with a source 18 of a narrow light beam through the corresponding surface of the controlled part 3 with internal thread, the second optoelectronic head 22 (figure 2), formed from optically coupled source 23 and receiver 24 of light radiation, equipped with corresponding lenses 25 and 26 and mounted on the second coordinate table 14 on opposite sides of the controlled part 11 with an external thread, and a PC 27 (Fig. 4), the inputs of which are connected to the outputs of the multi-element photodetector 20, light emission receiver 24, longitudinal 9 and transverse 16 displacement sensors and an angular displacement sensor 6 (Figs. 1 and 4), and the outputs are with drives of longitudinal 8 and transverse 15 displacements and a rotation drive 5 around the longitudinal axis.

The PC 27 may be equipped with a monitor and printer (not shown in the drawing).

The optoelectronic head 17 is a cylindrical body with a slot in the side for output and reception of laser radiation.

The drive 5 of rotation around the longitudinal axis of the interchangeable ring clamp (sleeve) 4 can be made, for example, in the form of a stepper motor and is equipped with support rollers 28 that interact with the interchangeable ring clamp (sleeve) 4.

In the future, for convenience, a removable ring clamp 4 will be called a sleeve 4, the controlled part 3 with an internal thread - a sleeve 3, and the controlled part 11 with an external thread - a pipe 11.

The purpose and functions of the elements and blocks of the device.

The source 18 together with the lens 19 are designed to form a narrow light beam in the direction of the threaded surface of the sleeve 3, and the photodetector 20 together with the lens 21 is used to generate a signal about the position of the scattered and reflected light spot on the surface of the photodetector 20.

The optoelectronic head 17 is designed to determine the distance to the threaded surface of the part 3 by implementing the triangulation measurement method. This head 17 measures the cross section of the thread of the coupling 3 (in its lower part) in one plane in one stroke of the translational movement of the table 7.

The optoelectronic head 22 is designed to determine the coordinates of the points of the threaded surface of the part 11 by implementing the shadow measurement method. In other words, the source of light 23 and the receiver 24 with the corresponding lenses 25 and 26 are designed to implement the shadow optical measurement method and fix the coordinates of the points of the threaded surface of the pipe 11.

Automatically scanning (moving) relative to the monitoring objects, the optoelectronic heads 17 and 22 make it possible to obtain profilograms of sections of these objects in the PC memory 27.

Sensors 9 and 16 are designed to generate signals about the position coordinates of tables 7 and 14, respectively, and sensor 6 is designed to generate signals about the angular position of the sleeve 4. Sensors 9 and 6 allow you to track the current "linear" and "angular" position of the coupling 3 relative to the optoelectronic head 17, and the sensors 16 and 9 are “linear” positions of the pipe 11 relative to the optoelectronic head 22.

The drive 5 based on a stepper motor is designed to transmit rotary motion to the sleeve 4 through the support rollers 28 and rotate it together with the coupling 3 by a predetermined angle (for example, by 180 °).

The coordinate table 7 together with the drive 8 provide the movement of the controlled part - the pipe 11 and the optoelectronic head 17 along the coordinate X of the coordinate system of the device when controlling the thread parameters of the pipe 11 and the coupling 3 (figure 1).

The coordinate table 14 together with the drive 15 provide the movement of the optoelectronic head 22 along the coordinate Y of the coordinate system of the device when monitoring the parameters of the thread of the pipe 11 (FIGS. 2 and 3).

The stroke of the table 7 is sufficient for scanning along the coordinate X of the coordinate system of the device of the pipe 11 and the coupling 3, respectively, by the optoelectronic heads 22 and 17 along the entire length of their threaded section.

The stroke of the table 14 is sufficient to move the optoelectronic head 22 along the Y coordinate of the coordinate system of the device for controlling threads on opposite sections of the pipe 11.

The sleeve 4 is designed for operational axial fixation of the coupling 3 before the procedure for monitoring the parameters of its thread.

The cones 12 and 13 of the mount 10 are designed to center and fix the pipe 11 on the coordinate table 7 before the procedure for monitoring the parameters of its thread. In Fig.2 and 3, the mount 10 is not conventionally shown.

A personal computer 27 is designed to implement a program for monitoring the parameters of the threads of the coupling 3 and pipe 11 and to coordinate the operation of the units and components of the device during such monitoring. In this case, the PC 27 provides the appropriate processing of the signals from the photodetectors 20 and 24 and the sensors 6, 9 and 16 and generates the corresponding profilograms of the cross-sections of the threaded sections of the coupling 3 and the pipe 11. Next, based on the profilograms of the PC 27 calculates the thread parameters and compares them with the parameters threads specified by the drawing and other design documentation. The results of the comparison are issued in the form of printed control protocols.

Description of the device in dynamics.

The device can operate in two modes:

- the mode of control of parts with internal thread, based on the triangulation optical measurement method (coupling control mode);

- the control mode of parts with external thread, based on the shadow optical measurement method (pipe control mode).

Before starting the operation of the device in any of these modes, a control program and the necessary initial data are entered into the PC 27 memory, including tolerances on the thread parameters of the sleeve 3 or pipe 11.

The control program is based on a comparison of the set values of the thread parameters with the measured values of the thread parameters of the data of the test objects.

Coupling control mode.

When the device is in this mode, the coupling 3 of a given size is installed and fixed in the sleeve 4.

On command from the PC 27, the drive 8 is turned on, which begins to move the coordinate table 7, and with it the optoelectronic head 17 along the X coordinate of the device coordinate system. In this case, a narrow beam from the laser source 18 is directed to the controlled inner surface of the coupling 3 through a slot in the side of the head 17. An image of a light spot formed by the diffuse (scattered) component of the reflected laser beam is projected through the optical system 21 onto the corresponding photosensitive elements of the photodetector 20 in the form of light marks. The scanning circuit of the photodetector 20 (not shown in the drawing for simplicity) generates clock pulses that provide optoelectronic conversion of light mark images on its elements.

This transformation is carried out in such a way that changes in the coordinates of the specified light mark on the elements of the photodetector 20 are proportional to changes in the thread profile of the coupling 3. The image of the light mark causes a change in voltage levels in individual elements of the photodetector 20, as a result of which the distribution of the output signals of the elements over time is proportional to the spatial distribution of light intensity along the cross section of the light mark on the elements of the photodetector 20. Information signals from the output of the photodetector 20 enter the input of the PC 27 for subsequent processing according to the program stored in it and obtain the value of the range to the corresponding point on the threaded surface of the coupling 3.

Thanks to the sensor 9, the measurement of the distance to the corresponding point of the thread is accompanied by fixing its coordinate x, the code of which is also recorded in the memory of the personal computer 27. As a result, in one pass of the optoelectronic head 17, a profile profilogram is formed in the memory of the personal computer 27 in the lower region of the inner surface of the coupling 3 with one of its angular position i.e. a change in the thread profile is detected in this area of the coupling 3 in the XOZ plane.

To scan the cross section of the coupling 3 at its other angular position (for example, through 180 °), the drive 5 is turned on by a signal from the PC 27, the support rollers 28 of which rotate the sleeve 4, and with it the sleeve 3 by a predetermined angle.

The measurement of the thread profile of the coupling 3 at a given angular position is similar to that described above.

Obtaining profilograms from two "opposite" sections of the coupling 3 can be used to determine the actual parameters of the thread, including diametrical.

After completing the measurements, the sleeve 3 is unloaded (pulled out) from the sleeve 4 and, then, the next sleeve is loaded.

The tests carried out by the authors of the inventive device showed that the optoelectronic head 17, which is based on the method of optical triangulation, can be used not only to control the thread profile of the sleeve 3 along its entire length, but also its skirt and part of the chamfer at the end.

Pipe control mode.

When the device is operating in this mode, a piece of pipe 11 of a given size with a threaded section, the thread parameters of which is supposed to be subjected to a control procedure, is placed (fixed) between the cones 12 and 13 of the stop-centralizer.

The PC 27 is turned on, which begins to work according to the so-called search algorithm for the "boundary" points of the threaded surface of the pipe 11. In this case, the light beam of the source 23 falls on the receiver 24, from the output of which a constant signal is taken.

The drive 15 is moved, moving the coordinate table 14, and with it the source 23 and the receiver 24 of the light radiation, along the coordinate Y of the coordinate system of the device (in figure 5, in the direction "A"). This movement continues until the threaded section of the pipe 11 begins to block the beam coming from the source 23 to the receiver 24 (figure 2). When this occurs, the change in the magnitude of the signal recorded from the receiver 24.

At the time of changing the specified signal from the outputs of the sensors 9 and 16, the coordinate codes X and Y of the “boundary” point “B” are entered into the PC memory 27 (FIG. 5).

At the next time, the drive 8 is also turned on, which leads to the simultaneous movement of both tables 7 and 14. In the PC 27, the program for controlling their movement is designed in such a way that the projection of the beam of the source 23 on the (imaginary) XOY plane moves along the circle (along the path "B "Figure 5) of a predetermined radius r. Moreover, the center of such a circle is the point “B” mentioned above.

This movement of the projection of the beam of the source 23 continues until, again, there is a change in the signal at the output of the receiver 24, i.e. until a given ray reaches the border “light-shadow” or “shadow-light”.

By changing the signal at the output of the receiver 24, codes from the outputs of the sensors 9 and 16 are again recorded and again the coordinates of the X and Y coordinates of the next “boundary” point, taken in the next search cycle as the center of the circular path of the beam of the source 23, are entered into the PC memory 27 .

Similarly, the coordinate codes X and Y of the remaining “boundary” points of the threaded section of the pipe 11 are distinguished. It should be noted that the program for their search is designed in such a way that the beam moves around the circle always starts, for example, from its “lowest” point (Fig. .5) and this movement is always carried out in one direction, for example, clockwise.

Therefore, in one pass of the pipe 11 past the optoelectronic head 22, a section profilogram is formed in the memory of the PC 27 in the “right” region (see FIG. 2) of the outer surface of the pipe 11 (with one of its angular position), i.e. the change (distribution) of the thread profile of the pipe 11 in the XOY plane is detected.

To scan the cross section of the pipe 11 at its other angular position (through 180 °) by a signal from the personal computer 27, a displacement drive 15 is turned on, moving the coordinate table 14, and with it the source 23 and the light emission receiver 24, along the coordinate Y of the device coordinate system. This movement continues until the threaded portion of the pipe 11 ceases to block the beam coming from the source 23 to the receiver 24. In this case, there is a change in the magnitude of the signal recorded from the receiver 24 (Fig.3).

Further operation of the device to search for "boundary" points of the threaded section on another (opposite) section of the pipe 11 is similar to that described above.

Obtaining profilograms from two “opposite” pipe sections 11 can be used to determine actual thread parameters, including diametric ones.

After completing the measurements, the pipe 11 is unloaded (pulled out) from the stop-centralizer and, then, the next controlled pipe is loaded.

Automatic measurements of the geometry of the threads of the coupling 3 and pipe 11 are carried out by a PC 27 under the control of specialized software (STR). The software also calculates the parameters of the thread, registers and displays the values of the actual thread profile for each size of the product. In this case, measurements of the thread cross section are carried out non-contact and with a sufficiently high productivity (one “passage” of the beam along the controlled object 3 or 11 is carried out in about 10-30 seconds).

The measurement results are displayed in visual form, recorded and stored in the memory of the PC 27 and on computer storage media for unlimited time. They can also be issued in the form of printed protocols on paper.

The control program compares the reference values of the thread parameters with the measured values of the thread parameters. Based on the results of the control, a decision is made on the suitability of parts 3 and 11 for their further operation.

The operation of the second optoelectronic head 22 is based on the shadow optoelectronic method of measurement. Comparing its work with the work of the first optoelectronic head 17, one can point to the following advantages of the shadow method of controlling thread parameters:

- the influence of the quality of the execution of the threaded surface of the pipe 11 is minimal on the reliability of the control results, the angle of inclination of its thread and, accordingly, the minimum measurement error,

- the minimum width of the measurement zone, not exceeding 20-30 microns,

- minimal impact on the results of monitoring possible displacements of the axis of the pipe 11 in the transverse directions,

- it is easier to process signals from the optoelectronic head 22 than with the triangulation method, which does not require large computational resources to control the optoelectronic head 22 in real time.

However, the shadow method cannot be used to control the parameters of the internal thread.

Replaceable sleeves 4 can be made by the user of this device with different internal diameters, which will allow the rejection of couplings 3 on the outer diameter simultaneously with the control of the thread. If the coupling 3 has ovality, surface damage or an outer diameter greater than the inner diameter of the replaceable sleeve 4, then it will not fit into this sleeve.

Thus, the new set of essential features of the device proposed by the authors allows to increase the universality of the described device by providing the ability to control the thread parameters of parts with both internal and external threads, as well as to simplify the design of this device by eliminating the need to rotate the first optoelectronic head, which is connected by wires ( cables) with a PC and power supplies. These conclusions are confirmed by the above information.

Verification of patentability conditions “industrial applicability”.

The proposed optoelectronic device for monitoring the parameters of the thread does not cause difficulties in its manufacture. For example, one of the options for its implementation was introduced by the applicant at an oil producing enterprise of the Republic of Tatarstan to control NKTM with diameters of 60, 73 and 89 mm.

The above information indicates for the claimed device, as it is described in the claims, about the possibility of implementing it using known and proposed means. Therefore, the claimed invention meets the condition of patentability "industrial applicability" under applicable law.

LITERATURE

1. Devices and systems for automatic control of the dimensions of machine parts. Rabinovich A.N. - Kiev: Technics, 1970, p. 220-231.

2. Miracles V.A. et al. Dimensional control in mechanical engineering / V.A. Chudov, F.V. Tsidulko, N.I. Fredheim - M .: Mechanical Engineering, 1982, p.

3. RF patent No. 2267086 for the invention "Device for monitoring the parameters of threaded tubular products." IPC G01B 11/24, G01B 11/30. Publ. 12/27/2005

4. RF patent No. 2151999 for the invention "Method for controlling the parameters of the external thread and device for its implementation." IPC G01B 11/30, G01B 3/40. Publ. 06/27/2000

5. The certificate of the Russian Federation No. 11333 for the utility model “Device for monitoring the parameters of the external thread”. IPC G01D 3/00. Publ. September 16, 1999

6. RF certificate No. 19915 for utility model "Device for monitoring the parameters of a threaded section with an external thread." IPC G01D 3/10. Publ. 10/10/2001 g.

7. Certificate of the Russian Federation No. 11332 for the utility model “Device for monitoring the parameters of the internal thread”. IPC G01D 3/00. Publ. September 16, 1999

8. RF patent №2152000 for the invention "Method for controlling the parameters of the internal thread and device for its implementation." IPC G01B 11/30, G01B 3/48. Publ. 06/27/2000 (prototype).

Claims (2)

1. An optoelectronic device for monitoring the parameters of the thread, containing a base for basing the controlled parts, an attachment unit for the controlled part with an internal thread, located on the base for basing the controlled parts, a first coordinate table equipped with a longitudinal displacement actuator and a longitudinal displacement sensor, a first optoelectronic head located on the first coordinate table and consisting of a source of a narrow light beam, for example a laser with an optical system, a multi-element photodetector a nickel, for example a photo line, and a lens, the lens being mounted with the possibility of providing a triangulation optical connection of the multi-element photodetector with a narrow light beam source through the corresponding surface of the controlled part with internal thread, and a personal electronic computer (PC), the inputs of which are connected to the outputs of the multi-element photodetector and a longitudinal displacement sensor, and the output with a longitudinal displacement drive, characterized in that it contains a mounting unit th part with an external thread, made, for example, in the form of a two-cone stop-centralizer placed on the first coordinate table, one of its cones being removable, the second coordinate table having a U-shaped shape, placed on the base for basing the controlled parts and provided a transverse displacement drive and a transverse displacement sensor, a second optoelectronic head, formed from optically coupled light source and receiver, equipped with appropriate lenses and devices mounted on the second coordinate table on opposite sides of the controlled part with external thread, while the mounting unit of the controlled part with internal thread is made, for example, in the form of a removable ring clamp (sleeve) equipped with a rotation drive around the longitudinal axis and an angular displacement sensor, the first coordinate the table is placed on the basis for the basing of the controlled parts, the PC inputs are connected to the outputs of the light radiation receiver of the second optoelectronic head, the angular displacement sensor and the sensor transverse displacement, and PC outputs - with a rotation drive around a longitudinal axis and a transverse displacement drive. 2. The optoelectronic device according to claim 1, characterized in that the rotation drive around the longitudinal axis is made, for example, in the form of a stepper motor and is equipped with support rollers interacting with a removable ring clamp (sleeve).

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