KR100366254B1 - Shaft aligning device and method of engine and dinamometer - Google Patents

Abstract

The present invention relates to shaft alignment of an engine axis and a dynamometer for engine testing.

The present invention, such that the laser beam irradiated perpendicularly from the center of the engine axis and the center of the dynamometer axis to form an image on the screen by using a reflecting means consisting of a half mirror and a full reflection mirror, the axis alignment accuracy It provides a shaft alignment device for engines and dynamometers and a shaft alignment method for engine tests for increasing engine speed.

Description

Shaft aligning device and method of engine and dinamometer for engine test

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to the alignment of an engine axis and a dynamometer for engine testing, in particular a half mirror and a full mirror of laser light irradiated perpendicularly from the center of the engine axis and the center of the dynamometer. The present invention relates to a shaft alignment device for an engine and a dynamometer for an engine test for forming an image on a screen using reflection means composed of a reflection mirror, and to improve shaft alignment accuracy.

After the engine is manufactured, a dynamometer device is used for various tests such as driving force.

For the engine test, first, the operation of matching the axis of the engine and the axis of the dynamometer is performed. In the conventional case, as shown in FIG. 1, it was common to use the dial gauge device 1 for the axis alignment operation.

In order to align the engine (2) (3) of the dynamometer with the engine, the dial gauge (1) is attached (attached by the magnet (5)) to the flange coupling (4) of the dynamometer shaft (3). Touch the probe (6) of the gauge (1) to the surface of the flywheel (7) at the end of the engine shaft (2), and then turn the dynamometer shaft (3) by hand to read the scale change of the dial gauge (1). do.

At this time, when the flange surface 4 of the dynamometer and the wheel surface 5 of the engine are parallel to each other, the scale of the dial gauge 1 does not change. Thus, if the gauge scale does not change, both sides 4 and 7 It is determined that the surfaces facing each other are parallel to each other.

Next, the two shafts (2) and (3) coincide with each other, where the probe 6 of the dial gauge 1 touches the circumferential surface of the flywheel 7 (see dotted line) and the dynamometer shaft 3 When turning by hand, the scale of the dial gauge 1 changes when the engine shaft 2 is eccentric, and when there is a coincidence, there is no change. By aligning the shafts (2) and (3), the flange coupling 4 of the dynamometer shaft 3 and the flywheel face 7 of the engine are parallel and the shaft cores can be aligned.

However, the axis alignment operation by the dial gauge 1 has the following problems.

Measuring the displacement (degree of center of two axes) and the angle (degree of deviation of the flange coupling surface and flywheel surface from parallel alignment) when the shafts (2) (3) are aligned with the dial gauge (1) In order to make it difficult to turn the dynamometer shaft (3) with the dial gauge (1) by hand each time, the scale of the dial gauge (1) also rotates when turning the dynamometer shaft (3). It is difficult to read and depending on the type of universal joint connecting the two shafts (2) and (3), the engine shaft (2) must be eccentrically 10 to 15 mm higher than the dynamometer shaft (3). The dial gauge has a variety of problems in that it is difficult to accurately align the shafts 2 and 3 with the working method of the dial gauge.

Accordingly, the present applicant solved the above-mentioned conventional problems through "Domestic Patent Application No. 2000-46502".

That is, the prior art (Korean Patent Application No. 2000-46502) is a system for axial alignment of displacement and angle adjustment, which is shown in FIGS.

In order to mount the shaft alignment device 10, the first base member 11, which consists of a quadrilateral plate or a disc, is mounted to the engine flywheel 7 or the flange coupling 4 of the dynamometer by magnet or bolt fixing means. do.

The first base member 11 and the second base member 12 having the same shape are installed to face the first base member 11 at a distance t, and then diagonally opposed to each other at four corners. Near the two corners in the two directions, two angle adjusting screws 13 penetrate the second base member 12 (by screwing) to the body of the first base member 11, and the empty two on the other diagonal line. Compression springs 14 are interposed at the corners of the points to support the second base member 12 against the first base member 11 against the tightening force of the angle adjusting screw 13.

In addition, a ball 15 which serves as a hinge when the second base member 12 is inclined by the tightening and loosening degree of the angle adjusting screw 14 is adjacent to any one of the two compression springs 14 in the diagonal direction. ) Is installed on the second base member 12 such that the X-axis direction feeding device 16 and the Y-axis direction feeding device 17 are perpendicular to each other.

At this time, the X-axis direction conveying device 16 is a four-sided guide frame 18 long in the X-axis direction, the slide is accommodated in the four-sided guide frame 18 is movable in the longitudinal direction, that is, the X-axis direction X-axis direction adjustment in which the plate 19 and the one side wall of the square guide frame 18 are screwed through to move the slide plate 19 so that the end thereof contacts and supports one side of the slide plate 19. A screw 20 and a compression spring 21 for elastically supporting the slide plate 19 on the opposite side of the adjusting screw 20. The quadrilateral guide frame 18 is attached to the second base member 12. Fix by welding or bolt.

In addition, the Y-axis direction conveying device 17 is accommodated in the four-sided guide frame 22 long in the Y-axis direction, the four-sided guide frame 22 is movable in the longitudinal direction, that is, Y-axis direction Y-axis direction adjustment screw through which the slide plate 23 passes through one side wall of the square guide frame 22 so as to move the slide plate 23, and the end thereof is in contact with one side of the slide plate 23. (24) and a compression spring (25) installed on the opposite side of the adjusting screw (24) to support the slide plate (23), and the quadrilateral guide frame (22) arranged in the Y-axis direction is welded. Or it is fixed at right angles to the slide plate 19 which is slid in the X-axis direction by bolts.

Then, the diode light source unit 27 of the laser light irradiator 26 is fixedly mounted on the slide plate 23 in the Y axis direction, and is required for irradiation of the laser light from the diode light source unit 27 of the laser light irradiator 26. The driving circuit unit 28, the switch 29, and the power supply 30 such as a battery for obtaining a high output voltage are also arranged on the PCB board 31 and fixed on the slide plate 23 or separately installed on the base member. After that, the circuit is connected to the diode light source unit 27 by a long wire.

In addition, the front of the diode light source unit 27 is equipped with a stove unit 32 for irradiating the laser in parallel, the laser light emitted from the diode light source unit 27 passes through the stove unit 32 of the focal length and focus The size is determined.

However, the above prior art of axially aligning using the screen 34 of paper material has a fear of misjudging about axially aligning as shown in FIG.

That is, the prior art of aligning an axis onto an image formed on one screen by adjusting displacement and angle has a lot of factors that are incorrectly determined to be correct even when the axis is not properly aligned.

In other words, in the prior art, the distance between the light source and the screen 34 is limited between the engine shaft 2 and the dynamometer shaft 3, and the distance between the two shafts 2, 3 is limited. When the angle is present, the distance between the light source and the screen 34 is greater, and the distance between the two images 35 is increased.

However, the above-described prior art uses only one screen 34, so that the screen 34 is fixed at one position, the axis alignment operation is performed, and then the screen 34 is moved to another position to check whether the axis alignment is correct. Discomfort was to be followed.

In other words, it is necessary to repeat the axis alignment while moving the screen 34 has a disadvantage.

The present invention is to improve the applicant's prior art as described above, the object of the present invention, a half mirror and full reflection of the laser light irradiated perpendicularly from the center of the engine axis and the center of the dynamometer axis (full reflection) The purpose of this study is to provide a shaft alignment device for an engine and a dynamometer for the engine test that improves the shaft alignment accuracy by forming a phase on a screen using a reflector composed of a mirror.

1 illustrates a shaft alignment method of an engine and a dynamometer according to a first embodiment of the related art.

Diagram.

Figure 2 is an engine and dynamometer through the displacement and angle adjustment in a second conventional embodiment

Perspective view showing an axis alignment device of the device.

3 is a cross-sectional view of FIG.

4 is a view for explaining an axis alignment method according to the second conventional embodiment.

5 is a diagram illustrating an engine and a dynamometer for testing an engine according to one embodiment of the present invention.

A perspective view showing the structure of a reflecting means to be applied to an axis alignment device.

6 is a front view of FIG. 5;

7 is a bottom view of FIG. 5.

8 is a cross-sectional view of FIG.

9 is an engine for an engine test to which the reflecting means is applied as an embodiment of the present invention;

Coupling sectional view showing the structure of the shaft alignment device of a dynamometer.

10 is a characteristic diagram of a translucent mirror applied to the present invention.

Figure 11 is the amount of propagation light for each direction of the laser light irradiated when applying the reflecting means to the present invention

schematic.

12 is the amount of light propagated by direction of the laser light irradiated when the reflecting means is applied to the present invention

schematic.

Figure 13 is a laser irradiated from two laser when applying the reflecting means to the present invention

The progress of light and the state of the image on the screen.

※ Explanation of code for main part of drawing

2: engine shaft 3: dynamometer shaft

4 flange coupling 7 fly wheel

27: light source 34, 34 ': screen

100: mirror support 200: translucent mirror

300: total reflection mirror

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

5 is a perspective view showing the structure of the reflecting means to be applied to the axial alignment device of the engine and the dynamometer for the engine test as an embodiment of the present invention, Figure 6 is a front view of Figure 5, Figure 7 is a bottom surface of Figure 5 8 is a cross-sectional view of FIG. 5.

9 is a cross-sectional view showing the structure of the shaft alignment device of the engine and the dynamometer for the engine test to which the reflecting means is applied as an embodiment of the present invention, Figure 10 is a characteristic view of a semi-transparent mirror applied to the present invention, Figure 11 is a schematic diagram showing the amount of light emitted by the direction of the laser light irradiated when the reflecting means is applied to the present invention, Figure 12 is a schematic diagram showing the amount of light progressed by the direction of the laser light irradiated when the reflecting means is applied to the present invention, Figure 13 is a reflection The state diagram of the image (focus) on the screen and the progress of the laser light irradiated from the two lasers when applying the means.

5 to 13, the displacement and the angle adjusting means are mounted on the ends of the engine shaft 2 and the dynamometer shaft 3, respectively, and then the displacement and the angle are adjusted so that the laser beam 33 is the axis ( 2) A device for axially aligning the center of the shaft (3) perpendicular to the end surface of the shaft (2) (3),

On the flywheel 7 of the engine shaft 2 and the flange coupling 4 of the dynamometer shaft 3 to form a mirror support portion 100 having a predetermined inclined surface (for example 45 °),

To reflect the laser light irradiated perpendicularly from the center of the engine shaft (2) and the center of the dynamometer shaft (3) so that the images (focus) formed on the two screens 34, 34 'coincide,

On the inclined surface of the mirror support portion 100 is fixed to the translucent mirror 200 to maintain a predetermined angle (for example 45 °) with the surface of the flywheel 7 (or flange coupling 4),

The bottom surface of the mirror support portion 100 has a structure in which the total reflection mirror 300 is maintained to maintain the translucent mirror 200 and a predetermined angle (for example, 45 °).

In the axial alignment method of the present invention, the laser beam irradiator is irradiated to the front, the position of which can be adjusted in the X-axis and Y-axis directions, and the laser beam irradiator is adjustable to change the irradiation angle of the laser beam 33. Mounting (26) to the flywheel (7) face of the engine and the flange coupling (4) face of the dynamometer;

Providing a plurality of screens 34 and 34 'such that the focal point 35 is formed at a front position of the engine to which the laser light 33 is irradiated;

Adjust the XY coordinate position and tilt angle of the engine side laser light irradiator 26 such that the focal point 35 forms a point on the screens 34 and 34 'while rotating the flywheel 7 of the engine. Adjusting the displacement and the angle so that the image by the laser light 33 is formed at one point irrespective of the rotation of the shafts 2 and 3;

After the mirror support part 100 is installed on the flywheel 7 surface or the flange coupling 4 surface, the mirror support part 100 forms an angle (for example, 45 °) with the flywheel 7 surface on the mirror support part 100. Fixing the translucent mirror 200 and fixing the total reflection mirror 300 to form a predetermined angle (for example, 45 °) with the translucent mirror 200;

Two screens of a laser image irradiated from two laser light sources when the mirror support part 100 on which the translucent mirror 200 and the total reflection mirror 300 are fixed to the surface of the flywheel 7 or the flange coupling 4 are fixed. Moving the engine support to match all at (34) (34 ') to perform axial alignment; It is configured to include.

Referring to the shaft alignment operation method of the engine and the dynamometer according to the present invention as described above are as follows.

[One]. If the heights of the two axes (2) (3) are the same

The shaft alignment device 10 is first mounted on the flywheel 7 using magnets or bolt fixing means, and then the switch 29 is turned on to irradiate the laser light straight from the diode light source 27.

In this case, as shown in FIG. 4, the screen 34, for example, a paper or the like, is positioned on the path of the laser light 33 so that an image can be formed at the front position where the laser light 33 is irradiated, and the flywheel 7 is positioned. ) Is slowly rotated to adjust the displacement and angle so that the image (focus) 35 by the laser light forms on the screen 34 at one point 35a.

This is for determining whether the laser light 33 is exactly centered with the engine shaft 2 of the flywheel 7. The laser light 33 formed on the screen 34 by the rotation of the flywheel 7 is performed. Positioning operation is performed by moving the slide plates 19 and 23 in the XY axis direction so that the image 35 does not change and maintains a point 35a.

If the laser light 33 is not perpendicular to the surface of the flywheel 7, that is, at an angle to the axis of axial line 37, the laser light 33 is rotated according to the rotation of the flywheel 7. ) Image (focus) is not formed as a single point (35a), but a circle is drawn, and when the circle is drawn, the shaft centers do not coincide. In this case, the adjustment screw 13 and the X-axis Y-axis adjustment screw (20, 24) Adjust the inclination angle of the first base member 12 by using (Tightening one of the adjustment screw 13, the second base member 12 is inclined to the hinge point of the ball 15) and the slide plate While moving (19) and (23) along the XY axis direction, it adjusts until the focal point 35 reaches one point 35a.

At this time, as the distance between the diode light source 27 and the screen 34 increases, the circle drawn by the focal point 35 becomes larger, so that the axis of the laser light 33 and the axis 2 coincide with each other. The accuracy of the alignment can be improved, and for this purpose, by installing a mirror capable of reflecting light at the position of the screen 34, the focus 35 can appear on the wall or the ceiling of the laboratory, and thus the focal length can be increased very easily.

However, it is not immediately determined that the axes coincide with each other at the point 35a, that is, the laser light 33 and the axis of axial line 37 coincide, and the advantage is that the screen 34 is shown in Fig. 4. It is obvious from the point where the first point is drawn when retracting from the position shown.

Therefore, after the screen is moved from the previous position to the other position, the adjusting screw 13 and the XY axis direction adjusting screw 20 of the alignment device 10 are shown in the same manner as described above, so that the focus appears as a point instead of a circle. (24) to adjust the work.

In this case, when the mirror is used as the screen 34, the alignment of the mirror may be performed after changing the angle of the mirror without changing the position so that the focus is formed at another position on the wall or the ceiling.

The same applies to the dynamometer so that the laser light 33 is irradiated coinciding with the axis center of the dynamometer axis 3.

At this time, the shaft alignment device used for shaft alignment of the engine is not reused, and the flange coupling surface 4 of the dynamometer is mounted on another shaft alignment device.

When the above operation is completed, a translucent screen such as a paper is installed at one-third of the positions closest to the engine among the positions that divide the distance between the two axis alignment devices in three equal parts, and the focus (top) formed on both sides of the paper coincides. While checking visually, move the bed where the engine is installed (not shown) to adjust the laser beams irradiated to both sides.

Next, move the position of the screen to the third quarter, which is closer to the dynamometer side, and adjust the images (focus) on both sides to match. Since this is not correct, repeat the previous operation until the screen position coincides with both phases at two points where the distance between the two devices is equal to three. It is determined that the shafts are matched.

[2]. Shaft alignment method when the engine shaft is 10mm higher than the dynamometer shaft

The laser light coincides with the axis center of each axis, that is, the axis alignment device provided in each is mounted perpendicular to the axis line.

Turn the Y-axis direction adjusting screw of the axis alignment device installed on the dynamometer to move the slide plate in the Y-axis direction upward 10 mm.

Secure the dynamometer shaft so that it does not turn. Even if the position of the diode light source of the shaft alignment device installed on the engine side is moved 10mm in the downward direction (Y-axis direction), the same shaft alignment result can be obtained, but the engine side will move because the shaft alignment is performed by moving the engine in the above operation. Since the possibility is high, it is more preferable to move the diode light source part on the dynamometer side.

Meanwhile, the focal point 35 forms a point on the screens 34 and 34 'while rotating the flywheel 7 of the engine so as to more accurately achieve the axial alignment through the displacement and angle adjustment as described above. By adjusting the XY coordinate position and the inclination angle of the engine-side laser light irradiator 26 so that the displacement and the angle are made to be at one point different from the laser light 33 irrespective of the rotation of the axes 2 and 3. Adjust

Subsequently, after the mirror support part 100 is installed on the flywheel 7 surface or the flange coupling 4 surface, the mirror support part 100 has a predetermined angle with the flywheel 7 surface (eg, 45 °). It is fixed to the semi-transparent mirror 200 to form a), and the total reflection mirror 300 to form a predetermined angle (for example 45 °) with the semi-transparent mirror 200 again.

In addition, after fixing the mirror support part 100 on which the semi-transparent mirror 200 and the total reflection mirror 300 are fixed to the surface of the flywheel 7 or the flange coupling 4, the laser image irradiated from the two laser light sources is different. By moving the engine support points to coincide on both screens 34 and 34 ', axial alignment can be made more precise.

That is, the total reflection mirror 300 is a mirror in which most of the light, which is commonly called a mirror, is not transmitted, is reflected, and the semi-transparent mirror 200 transmits half of the light incident as an optical device as shown in FIG. It has a specific reflection.

Therefore, when the semi-transparent mirror 200 and the total reflection mirror 300 is fixed to the mirror support part 100 at an angle of 45 °, when the irradiated laser light is 1, the amount of laser light traveling in each direction is as shown in FIG. Will appear together.

In this case, as shown in FIG. 11, since the light amount of 1/2 traveling to the left is divided into the light transmitted and the reflected light from the opposite translucent mirror 200, the light amount irradiated by one laser is finally shown in FIG. 12. It goes along.

Accordingly, as shown in FIG. 13, when the images formed on the two screens 34 and 34 ′ coincide with each other, the misalignment of the axis alignment may be reduced since only the axis alignment is correct.

As described above, the present invention makes the laser beam irradiated perpendicularly from the center of the engine shaft and the center of the dynamometer to form an image on the screen by using reflecting means composed of a half mirror and a full reflection mirror. It provides the effect of increasing the axis alignment accuracy.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (2)

In the device for axial alignment by mounting the displacement and angle adjusting means at the ends of the engine shaft and dynamometer shaft, respectively, by adjusting the displacement and the angle so that the laser beam is perpendicular to the end surface of the shaft from the center of the shaft. On the flywheel of the engine shaft and the flange coupling surface of the dynamometer shaft to form a mirror support having a predetermined inclined surface, In order to match the image formed on the two screens by reflecting the laser light irradiated perpendicularly from the center of the engine shaft and the center of the dynamometer shaft, The translucent mirror is fixed to the inclined surface of the mirror support to maintain a predetermined angle with the surface of the fly wheel (or flange coupling), An axis alignment device of an engine and a dynamometer for an engine test, characterized in that the bottom surface of the mirror support is fixed to the semi-transparent mirror and the total reflection mirror maintaining a predetermined angle. In the axis alignment method for adjusting the displacement and angle so that the engine axis and the dynamometer axis coincide for the engine test, the laser light is emitted from the center of the axis perpendicular to the end surface of the axis, Installing a mirror support on a flywheel surface or a flange coupling surface, and then fixing the translucent mirror having a predetermined angle with the flywheel surface, and fixing the total reflection mirror having a predetermined angle with the translucent mirror; Axial alignment is performed by moving the engine support points so that the laser images irradiated from the two laser light sources coincide on both screens when fixing the mirror support having the semi-transparent mirror and the total reflection mirror fixed to the surface of the flywheel or the flange coupling. ; A shaft alignment method of the engine and dynamometer for the engine test, characterized in that proceeding.