KR200262722Y1 - Optical apparatus for adjusting shaft center between two shafts - Google Patents

Abstract

The present invention relates to a shaft centering device, and more particularly to a device that can accurately and easily match the shaft center between two different axes.

In order to achieve the above object, the present invention is located in the center of the cross-section of the reference axis and the light emitting unit for irradiating light; A light splitter attached to the reference axis and refracting some of the incident light and passing the rest as it is; A photosensitive plate attached to the reference axis and positioned vertically opposite to the light splitter to sense light beams refracted from the light splitter; A collimation lens attached to the reference axis and making incident light into parallel rays or collecting incident parallel rays at arbitrary focal points; Provided is an optical sensing type biaxial axial coincidence device including an insertion mirror attached to a subordinate axis and reflecting some of the incident light rays and passing some of them.

Description

Optical sensing for adjusting shaft center between two shafts}

The present invention relates to a shaft centering device, and more particularly to a device that can accurately and easily match the shaft center between two different axes.

In the mechanical field industry, it is common to connect the rotary shafts of two different devices for power connection between machines or to test the performance of the machine.In this case, if the parallelism and concentricity between the axes connected to each other do not coincide, Loss, breakage of machinery, and increased error in experimental results.

For example, in the case of an engine performance and endurance test, a dynamometer is used for the engine performance and endurance test, in which case the power transmission shaft is connected between the engine and the dynamometer firmly fixed to the floor. You will be tested. At this time, the agreement between the shaft center between the dynamometer and the engine, i.e., the concentricity and parallelism between the two shafts, determines the safety and reliability of the test. If the test is run out of the prescribed shaft center, it may cause the damage of the power transmission shaft and the damage of the dynamometer.

However, in the conventional case, the concentricity and parallelism are adjusted by using a dial gauge while moving the engine-side fixed support leg in the power system room. In this case, the difficulty is that the concentricity and the factor of parallelism adjustment are related to each other. This will continue.

This takes a considerable amount of time to achieve a defined degree of agreement (about 15 hours for a 15-year career and about a day for a year-long experience), resulting in the building, equipment, and storage of a very expensive power system. There is a problem that causes waste such as input work. In other words, the engine room should always be tested, but it takes a lot of time to set up. In addition, since the setting work based on the skill of the operator only, there is a problem in terms of management. In other words, it is difficult to set a standard time and require its compliance.

Referring to the problems of the prior art based on the accompanying drawings as follows.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the conventional shaft shaft matching device between both axes.

Conventional parallel matching device between both shafts is provided with a parallel gauge check dial gauge 13 on the reference shaft 100 so that the end of the parallel gauge check gauge gauge 13 is in contact with the end surface of the subordinate shaft 200. When the reference shaft 100 is rotated, the parallel gauge check gauge 13 also rotates at the same time, and thus the end of the parallel gauge check gauge 13 is the end of the subordinate shaft 200. A circular trajectory is drawn on the subsection.

When the parallel gauge check dial gauge 13 is installed on the reference shaft 100 and the measuring device is installed in the cross-sectional direction of the slave shaft 200, the reference axis 100 is rotated, and the parallelism error component between both axes is observed. It can be seen. If there is no parallelism error between the reference axis 100 and the slave axis 200, the trajectory drawn by the end of the parallel gauge check gauge 13 will be in the shape of a garden. However, if there is a parallelism error between the reference axis 100 and the subordinate axis 200, the trajectory drawn by the end of the parallel gauge check gauge 13 cannot be the shape of the garden and the egg shape eccentric in one direction Will be.

However, the conventional parallelism matching device between two axes should know the error value of the four directions of up, down, left, and right, but when looking down, it is inconvenient, such as having to lean over and turn your head upside down.

In the conventional biaxial concentricity matching device, the concentricity check dial gauge 14 is installed on the reference shaft 100 and the end of the concentricity check dial gauge 14 is in contact with the peripheral surface of the subordinate shaft 200. When the reference shaft 100 rotates, the concentric check dial gauge 14 also rotates at the same time, so that the end of the concentric check dial gauge 14 is the peripheral surface of the subordinate shaft 200. A circular rotation trajectory is drawn in.

When the dial gauge 14 for the concentricity check 14 is installed on the reference axis 100 and the measuring device is installed in the circumferential direction of the subordinate axis 200, the concentricity error component between the two axes is rotated when the reference axis 100 is rotated. It can be seen. If there is no concentricity error between the reference axis 100 and the subordinate axis 200, the trajectory of the end of the dial gauge 14 for the concentricity check will be the shape of the garden. However, if there is a concentricity error between the reference axis 100 and the subordinate axis 200, the trajectory drawn by the end of the dial gauge 14 for the concentricity check cannot be the shape of the garden and the elliptical eccentric in one direction Will be.

However, the conventional biaxial concentricity matching device also needs to know the error value of the four directions, usually up, down, left and right, but still has the inconvenience of having to lean back and upside down.

In addition, when using the conventional two-axis axial coincidence device, both concentricity and parallelism are not sensed in real time, it is inconvenient to record the distorted amount by four directions by hand, and the concentricity and parallelism can be simultaneously matched. Since there is no relationship between the concentricity and parallelism alternately to work to be repeated, there is a disadvantage that takes a lot of work time.

In order to solve the above-mentioned problems, the present invention can make the operation quick and easy when matching the concentricity and parallelism between both axes, and high precision light sensing type which can reduce the axial error of both axes to a very small amount. An object of the present invention is to provide a shaft centering device between two shafts.

BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows the conventional shaft shaft matching device between both axes.

Figure 2 is a view showing a shaft matching device between the two optical sensing type axis according to the present invention.

Figure 3 is a view showing a photosensitive plate of the optical sensing type biaxial shaft matching device according to the present invention.

Figure 4 is a view showing a circular slot installed on the end surface of the slave shaft attachment device of the optical sensing type biaxial shaft matching device according to the present invention.

* Brief description of symbols for the main parts of the drawings *

13: Dial gauge for parallelism check 14: Dial gauge for concentricity check

21 light emitter 22 light splitter

23 collimation lens 25 photosensitive plate

27: insertion mirror 28: circular slot

100: reference axis 200: subordinate axis

In order to achieve the above object, the present invention is a light emitter; A light splitter; A collimation lens; A photosensitive plate; Provided is an optical sensing type biaxial shaft matching device composed of an insertion mirror.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the optical sensing type biaxial shaft matching device according to the present invention.

2 is a view showing an optical sensing type biaxial shaft matching device according to the present invention.

In this embodiment, by specifying the right side of FIG. 2 as the right side and the left side of FIG. 2, the positional relationship between components of the optical sensing type biaxial axial coincidence device according to the present invention will be clearly described.

The light-sensing biaxial shaft matching device according to the present invention, is installed on the end end surface of the reference axis 100 and the light emitter 21; The optical splitter (22); The collimation lens 23; It is composed of a reference shaft attachment device including the photosensitive plate 25 and the subordinate attachment device including the insertion mirror 27 and installed on the end surface of the subordinate shaft 200.

The light emitter (21) on the reference axis attachment device; The optical splitter (22); The collimation lens 23 is arranged in the above-described order, the center of the collimation lens 23 is preferably placed in a straight line, the photosensitive plate 25 is preferably located in the vertical lower portion of the light splitter 22. At this time, the straight line preferably corresponds to the center line of the reference axis attachment device.

On the other hand, the above-described light splitter 22 and the collimation lens 23 may be shifted from each other.

Preferably, the insertion mirror 27 on the slave shaft attachment device penetrates the center line of the slave shaft attachment device to the center thereof.

The reference axis attachment device and the subordinate axis attachment device are installed at positions opposite to each other, where the center axis of the reference axis attachment device and the central axis of the subordinate axis attachment device are ultimately placed in the same straight line with each other. to be. This is because the axis of the reference axis and the slave axis coincide with each other.

The light emitter 21 is a device for irradiating light rays, the laser is mainly used as a light source, but the present invention does not necessarily limit its type. The light emitter 21 is preferably located at the center of the end surface of the end of the reference axis 100. The light beam irradiated from the light emitter 21 forms a form in which the light emitting port of the light emitter 21 is gradually diffused.

The light splitter 22 is a device that passes 50% of the light emitted from the light emitter 21 and reflects the remaining 50%, and is located between the light emitter 21 and the collimation lens 23. . Some of the light rays passing through the inclined mirror surface of the light splitter 22 pass as they are and the others are reflected at a predetermined angle. The optical sensing type biaxial shaft matching device according to the present invention does not specifically limit the installation angle of the light splitter 22 and the amount and reflection angle of the reflected light to be varied accordingly, but the amount of the reflected light is for the convenience of the light emitter. It is preferable that 50% and the reflection angle of the light beam (100%) irradiated from (21) be 90 degrees.

The light splitter 22 reflects or passes the light beam irradiated from the light emitter 21, but also reflects or passes the light beam reflected from the insertion mirror 27 and returned. At this time, a part of the light beam reflected from the insertion mirror 27 is reflected by the light splitter 22 to be directed to the photosensitive plate 25.

The photosensitive plate 25 is a device for detecting light reflected from the light splitter 22. The photosensitive plate 25 is located on one side of the reference axis attachment device, and the photosensitive plate 25 is preferably installed to be parallel to the central axis of the reference axis attachment device. The photosensitive surface of the photosensitive plate 25 is divided into four cells so that it is possible to identify whether the light beam reflected from the light splitter 22 is incident to the correct position, or if it is otherwise deflected with a certain degree of error. It is. On the other hand, it is very desirable to attach a photosensitive sensor to the photosensitive plate 25 so that the position of the detected light beam can be accurately grasped with a certain degree of error. This is because there is a limit in the accuracy of measuring the deflection error of the focus with the naked eye. In the present exemplary embodiment, when the amount of light sensed by the photosensitive plate 25 is converted into a voltage value and the voltage value is transmitted to an operation unit (not shown), the operation unit internally calculates the voltage value and then the photosensitive plate 25. Use a photosensitive sensor in the form of a coordinate value on the screen. However, the present invention does not necessarily force the use of only the above-described type of photosensitive sensor, so it may be used by applying various types of photosensitive sensors different from the above.

In addition, it is preferable to further attach a photosensitive sensor to the photosensitive plate 25 so that it is possible to precisely grasp how much light is incident. In the present embodiment, when the light amount detected by the photosensitive plate 25 is converted into a voltage value and the voltage value is transmitted to an operation unit (not shown), the operation unit internally calculates this voltage value and then expresses it as a numerical value. Use a photodetector sensor that outputs However, the present invention does not necessarily force the use of only the above-described type of photosensitive sensor, so it may be used by applying various types of photosensitive sensors different from the above.

The collimation lens 23 makes a light ray component (50%) passing through the light splitter 22 as it is in parallel light and passes through it as it is. The collimation lens 23 is generally composed of a composite lens in which two concave lenses and two convex lenses are combined, but may be composed of only an aspherical single lens.

The collimation lens 23 makes the light beams passing through the light splitter 22 into parallel light beams, but on the contrary, the collimation lens 23 makes the parallel light beams reflected from the insertion mirror 27 into an integrated light beam that converges again toward a constant focal point. do.

The insertion mirror 27 is installed at the left end of the slave shaft attachment device, the mirror surface of the insertion mirror 27 and the vertical cross section of the slave shaft 200 is very preferably installed to be parallel to each other. The insertion mirror 27 reflects half (25%) of the rays (50%) emitted through the collimation lens 23 back to the collimation lens 23, and the other half (25%) Pass it as it is.

In order for the parallel light beam from the collimation lens 23 to enter the insertion mirror 27, it must pass through a circular slot 28 extending from the end surface of the slave shaft attachment device. At this time, the center of the circular slot 28 is located at the center of the end surface of the slave shaft attachment device, the outer diameter of the circular slot 28 is equal to the vertical cross-sectional outer diameter of the light beam incident on the insertion mirror (27) Is very desirable.

If the concentricity between the reference axis and the subordinate axis coincides, all of the parallel rays from the collimation lens 23 (50%) pass through the circular slot 28. On the contrary, if the concentricity between the reference axis and the subordinate axis does not coincide, only a part of the parallel rays from the collimation lens 23 pass through the circular slot 28.

Hereinafter, the principle of measuring the concentricity and parallelism between the reference axis and the slave axis as a light-sensitive biaxial shaft matching device according to the present invention in detail.

The light beam (100%) irradiated from the light emitter 21 positioned at the center of the reference axis attachment device passes through the light splitter 22 in half (50%) and is parallel by the collimation lens 23. After the light beam is directed to the insertion mirror 27 in the slave shaft attachment apparatus, the parallel ray is reflected by the insertion mirror 27 again (half (25%)) to the light splitter in the reference shaft attachment apparatus. Returning to (22), the rest (25%) passes through as it is. At this time, the reflected light ray (25%) returned to the light splitter 22 in the reference shaft attachment device is reflected by the light splitter 22 to its half (12.5%) at 90 ° to the photosensitive plate 25. And the rest (12.5%) passes through. Therefore, the amount of light incident on the photosensitive plate 25 is 12.5% in total. In this case, the amount of reflected or passed light is preferably set to the above numerical value for convenience of implementation, but it is not necessary to keep the numerical value as described above, various changes and applications are possible according to the embodiment.

The principle of measuring the parallelism between the two axes in the above state is as follows.

If the parallelity between the reference axis 100 and the subordinate axis 200 coincides with each other, light (12.5%) reflected from the light splitter 22 enters the center of the photosensitive surface of the photosensitive plate 25. . On the contrary, if the parallelity between the reference axis 100 and the subordinate axis 200 does not coincide, the light rays (12.5%) reflected from the light splitter 22 do not enter the center of the photosensitive surface of the photosensitive plate 25. They will deflect in either direction.

3 is a view showing a photosensitive plate of the optical sensing type biaxial shaft matching device according to the present invention.

When the middle black part is called light incident on the photosensitive plate 25, the deflection error of light rays detected at regular intervals from the center of the photosensitive surface can be obtained by a simple arithmetic formula.

That is, if the incident light is deflected to the right, the deflection error Δx = (B + D)-(A + C), and if the incident light is deflected to the left, the deflection error Δx = (A + C)-(B + D If the incident light is deflected upwards, the deflection error Δy = (A + B)-(C + D), and if the incident light is deflected downward, the deflection error Δy = (C + D)-(A + B). If the incident light is deflected in an arbitrary direction, the deflection error can be obtained by combining the Δx component and the Δy component.

Next, the principle of measuring concentricity between both axes will be described.

4 is a view showing a view in the direction A-A in Figure 2, it is a view showing a circular slot provided on the end surface of the slave shaft attachment device of the optical sensing type biaxial shaft matching device according to the present invention.

At this time, it is preferable that the center line of the subordinate axis passes through the center of the circular slot 28.

If the concentricity between the reference axis and the subordinate axis coincides, all of the parallel rays from the collimation lens 23 (50%) pass through the circular slot 28, and the circular slot 28 Half of the light rays (25%) of the light beams passing through the insertion mirror 27 are reflected from the insertion mirror 27 and reincident to the light splitter 22 again, and to the light splitter 22. Half of the re-incident light rays (12.5%) are reflected from the light splitter 22 and enter the photosensitive plate 25.

On the contrary, if the concentricity between the reference axis and the subordinate axis does not coincide, the amount of light finally incident on the photosensitive plate 25 may be 12.5% or less.

This is because the parallel beams emitted from the collimation lens 23 do not pass through the circular slot 28 in the total amount (50%), and some of them collide with the outer surface of the circular slot 28 (hatched portions). It is lost, because some of the light beams that pass through the circular slot 28 and enter the insertion mirror 27 and are reflected back again are also lost by colliding with the outer surface of the circular slot 28 (hatched). to be.

As the optical sensing type biaxial shaft matching device according to the present invention, only the photosensitive plate 25 needs to be observed to check whether the shaft matching is performed between the two shafts.

Although the embodiment of the present invention has been described above, this is only an example and the spirit of the present invention is not limited thereto, and various changes and modifications may be possible. However, it will be understood from the appended claims that such changes and modifications fall within the scope of the present invention.

By implementing the present invention, error components of concentricity and parallelism between both axes can be simultaneously observed in real time, and high precision shaft matching can be performed, and this can be performed very quickly.

In addition, since the optical sensing type biaxial shaft matching device according to the present invention can be manufactured in a portable type, it can be always carried and has various application ranges.

Claims (8)

A light emitter positioned at the center of the cross section of the reference axis and irradiating light rays; A light splitter attached to the reference axis to reflect some of the incident light rays and pass the rest as it is; A photosensitive plate attached to the reference axis and positioned vertically opposite to the light splitter and sensing light rays reflected from the light splitter; A collimation lens attached to the reference axis and making incident light into parallel rays or collecting incident parallel rays at arbitrary focal points; A photosensitive biaxial shaft matching device including an insertion mirror attached to the subordinate axis and reflecting some of the incident light rays and passing some of them as it is. The method of claim 1, The optical sensing type biaxial shaft matching device, A reference axis attachment device installed at one end of the reference axis and including the light emitter, the light splitter, the collimation lens, and the photosensitive plate; Is installed on one end end surface of the subordinate shaft and is separated by the subordinate shaft attachment device including the insertion mirror axis sensing device between the two shafts The method of claim 2, On the end surface of the slave shaft attaching device, a circular slot having an outer diameter having the same size as that of the vertical cross section of the incident light beam is installed. The method of claim 2, The light-sensing device on the reference axis attachment device, the light splitter, and the collimation lens are arranged in a straight line in the order described above, and a straight line connecting the centers thereof coincides with the center line of the reference axis. Axis matching device between both shafts The method of claim 2, A linear sensing device between both axes of the optical sensing type, wherein a straight line passing through the center of the insertion mirror on the slave shaft attachment device coincides with the center line of the slave shaft. The method of claim 4, wherein And the light splitter and the collimation lens are arranged in a reverse order. The method of claim 1, The light splitter is configured to deflect some of the light beams irradiated by the light emitter and pass the rest as it is, while at the same time refracting some of the light beams reflected from the insertion mirror and passing the rest as it is. Axis matching device between both shafts The method of claim 1, The photosensitive plate is equipped with a photosensitive sensor for detecting the position of the detected light beam with a certain degree of deflection, and at the same time to accurately detect how much light is detected. Axis matching device between both shafts