JPH06105200B2 - Interlocking accuracy / vertical travel accuracy measuring device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for measuring interlocking accuracy and vertical travel accuracy between a gun and a periscopic sighting telescope in a combat vehicle or the like.

[Description of the Related Art] In combat vehicles and the like, a periscopic sighting telescope, a so-called periscope, is widely used as a sighting device for adjusting the standard of a gun. The gun and periscope are attached to the turret so that the elevation mirror of the periscope works in conjunction with the elevation of the gun, so that when the target is centered on the reticle of the periscope, the gun's aim is at that target. However, due to the accuracy of attachment to the turret, there may be an error in the linkage between the gun and the elevation mirror of the periscope, or / and the optical axis of the periscope and the central axis of the gun may not be parallel and Vertical travel error may occur with the periscope. When such an error occurs, even if the target comes to the center of the reticle of the periscope, the aim of the gun does not match the target, and the accuracy of shooting deteriorates. Therefore, the measurement of the interlocking accuracy between the gun and the periscope and the accuracy of the vertical movement are extremely important from the viewpoint of improving the accuracy of shooting.

Conventional measuring methods include a method using a scale board (hereinafter referred to as scale board method) and a method using a collimator (hereinafter referred to as collimator method).

In the scale board method, a scale board having a scale corresponding to the elevation angle of the gun and a scale corresponding to the depression angle of the periscope is installed in front of the gun and the periscope to be measured, and the central axis and light of the gun are set. By attaching a small telescope that matches the axis to the tip of the gun and reading the scale on the scale board facing the gun and the periscope with the periscope and the small telescope, the interlocking accuracy and vertical movement between the gun and the periscope The accuracy is measured.

In the collimator method, instead of a scale board, a plurality of gun collimators are installed in a fan shape at a predetermined angular interval in the elevation direction of the gun around the rotation axis of the gun in front of the periscope of the method. With the same number of periscope collimators as the center of the rotation axis of the elevation mirror of the periscope in the depression and elevation direction of the elevation mirror at the same angular interval as the angular interval of the gun collimator, arranged in a fan shape, to the elevation of the gun and the periscope, The parallel light from the corresponding gun collimator and the periscope collimator is received by the small telescope and the periscope at the tip of the gun, respectively, to measure the interlocking accuracy and vertical travel accuracy between the gun and the periscope.

[Problems to be Solved by the Invention] In the scale board method, the periscope is designed to be used at M ² × 10 m or more (M is the magnification of the periscope) or more. If the distance is shorter than this, the parallax caused by the difference in the position between the periscope and the gun becomes large, and accurate measurement cannot be performed. Therefore, it is desirable to install the scale board at a distance of M ² × 10 m or more, but recent guns and periscopes have an elevation angle of 45 degrees or more, so for example, the magnification M of the periscope is set to 8 times,
With an elevation angle of 45 degrees, you would have to build a huge scale board with a height of 640m. Even if the distance between the scale board and the periscope is 10 to 20 m, ignoring the decrease in measurement accuracy due to parallax to some extent, a scale board with a height of 10 to 20 m is required to measure up to an elevation angle of 45 degrees. ,
Increasing the size of the measuring device is unavoidable, and there is a problem in that the measurement accuracy decreases.

In the collimator method, since the gun collimator and the periscope collimator are lined up at a predetermined angular interval, it is not possible to measure the angle of depression and elevation where the collimator is not provided, and to make it possible to measure up to 45 degrees of elevation. The number of collimators increases, and the measuring device becomes larger. Further, since it is necessary to accurately set each collimator at a predetermined angular interval with respect to the rotation center of the gun and the rotation center of the elevation mirror, there is a problem that it is difficult to set the collimator.

The present invention has been made based on the above viewpoint, and an object thereof is to enable accurate and continuous measurement of the entire depression / elevation range regardless of the size of the depression / elevation angle, and the ease of setting for measurement. Another object of the present invention is to provide an interlocking accuracy / vertical travel accuracy measuring device capable of downsizing the device.

[Means for Solving the Problems] In the present invention, for measuring the interlocking accuracy or / and the vertical travel accuracy between a gun that is elevated and a periscopic sighting telescope that is interlocked with the elevation of the gun. A device, which is detachably attached to the eyepiece of the sighting telescope, and is detachably attached to the gun so as to optically oppose the autocollimator and the sighting telescope. A reflection means, the autocollimator includes a projection reticle and a fixed reticle, provides a projection reticle image provided by the projection reticle to the reflection means through the aiming telescope, and is reflected by the reflection means. By the interlocking accuracy / vertical travel accuracy measuring device configured to project the projected reticle image returning through the sighting telescope onto the fixed reticle. , To achieve the above purpose.

[Operation] The autocollimator and the reflecting means are arranged so that the projection reticle image reflected and returned by the reflecting means matches the fixed reticle while the gun and the sighting telescope are stopped at arbitrary positions. Adjusted in advance. The gun and the sighting telescope are raised in this adjusted state. If there is no interlocking error and / or vertical range error between the gun and the aiming telescope, the returning projection reticle image goes back to the autocollimator through the same optical path as when it exited, and then returns to the projection reticle. The image matches the fixed reticle. On the other hand, if there is an interlocking error and / or a vertical movement error, the optical path of the returning projected reticle image deviates from the optical path at the time of emission according to the error, and the projected reticle image deviates from the fixed reticle. Then, the interlocking accuracy and / or the vertical travel accuracy can be measured.

[Embodiment of the Invention] FIG. 1 is a block diagram showing an embodiment of the present invention.

In the figure, 1 is a gun, 2 is a periscopic sighting telescope or periscope, 3 is an autocollimator, and 4 is a reflecting mirror.

The gun 1 has a barrel 5 and a swing 6, and is attached to a turret (not shown) so as to rise and fall around a rotation shaft 7 of the swing 6. The periscope 2 includes an elevation mirror 8, a coupling 9, an objective lens 10, a pentaprism 11, a reticle 12, and an eyepiece lens 1.
3, the elevation mirror 8 is outside the turret, and the eyepiece 13
Is attached to the turret so that it is inside the turret. The elevation mirror 8 is moved up and down around the rotary shaft 14 by interlocking the swing 6 and the coupling 9, so that the periscope 2 is interlocked with the elevation of the gun 1. The reticle 12 is, for example, a flat glass having a cross line as shown in FIG.
The sighting of the gun 1 is achieved by looking through the periscope 2 from the eyepiece 13 side and aiming at the center of the reticle 12, that is, the intersection of the cross lines. Therefore, if there is an interlocking error between the gun 1 and the periscope 2, the elevation mirror 8 of the periscope 2 does not rise and fall at the same angle as the gun 1 when the gun 1 is elevated by a predetermined angle. This means that the gun 1 will not be aimed exactly at the target. Also, gun 1
If the rotation axis 7 of the and the rotation axis 14 of the elevation mirror 8 of the periscope 2 are not parallel to each other, a vertical movement error occurs, and similarly, even if the target is centered on the reticle 12, the gun 1 is accurately aimed at the target. There is no.

The autocollimator 3 includes a concave mirror 15, a light source 16, a condenser lens 17, a projection reticle 18, a half prism 19, and an objective lens 2.
It has 0, a fixed reticle 21, and an eyepiece lens 22. Concave mirror 1
5, the light source 16 and the condenser lens 17 give projection light to the projection reticle 18, whereby the projection reticle 18 projects a projection reticle image. The projection reticle image passes through the half prism 19 and is collimated by the objective lens 20 and emitted. The projection reticle 18 is a flat glass having a cross-shaped transparent slit 18a as shown in FIG.
The portions other than 8a are shielded from light and are configured to project a cross-shaped reticle image. Fixed reticle 21 is second
It is a flat glass having a crosshair similar to the reticle 12 of the periscope 2 described in the figure, and the projection reticle image reflected by the reflection mirror 4 and returned to the fixed reticle 21 returns to the objective lens 20 and the half prism. It is designed to be projected through 19 and fixed reticle through eyepiece lens 22.
21 and the projected reticle image that came back are visible. Such an autocollimator 3 is detachably attached to the eyepiece portion of the periscope 2 through a bracket (not shown) such that the objective lens 20 faces the eyepiece lens 13 of the periscope. It is not necessary to align the optical axis of the autocollimator 3 with the optical axis of the periscope 2 during this attachment.

The reflecting mirror 4 is detachably attached to the swing 6 of the gun 1 via the bracket 23 so that its reflecting surface faces the periscope 2 and optically opposes the autocollimator 3 with the periscope 2 in between. There is. Incidentally, at the time of this attachment, it is not necessary to place the reflection mirror 4 at right angles to the barrel 5 or in parallel with the rotation axis 7.

With the above-described structure, first, the gun 1 and the periscope 2 are stopped at arbitrary positions, for example, in a substantially horizontal state, are given from the autocollimator 3 to the reflecting mirror 4 through the periscope 2, are reflected there, and are again reflected. So that the projected reticle image that comes back through matches the fixed reticle 21, that is, the projected reticle image is on the crosshairs of the fixed reticle 21,
The mounting position of the reflection mirror 4 and / or the autocollimator 3 is adjusted. After adjusting in this way, the gun 1 and the periscope 2 are raised, and if there is no interlocking error and / or vertical movement error between the gun 1 and the periscope 2, a projection reticle reflected by the reflection mirror 4 and returned. The image enters the autocollimator 3 through the optical path exactly the same as the optical path at the time of emission to the reflection mirror 4, enters the autocollimator 3, is projected on the crosshairs of the fixed reticle 21, and overlaps the fixed reticle 21. On the contrary,
If there is an interlocking error or / and a vertical movement error between the gun 1 and the periscope 2, the optical path of the returning projected reticle image deviates from the optical path at the time of emission depending on the error, and the autocollimator 3
Then, the projection reticle image is projected on the crosshairs of the fixed reticle 21 with an error.

FIG. 4 is an explanatory view of the relationship between the fixed reticle and the projected reticle image when there is an error between the gun and the periscope. A is the crosshair of the fixed reticle 21, B is the projected reticle image, E ₁ is the interlocking error,
E ₂ indicates the vertical travel error. If there is an interlocking error, the projected reticle image shifts vertically with respect to the fixed reticle 21 by the amount of the interlocking error, and if there is a vertical movement error, the projection reticle image has a vertical movement error relative to the fixed reticle 21. Only laterally displaced. The amount of deviation of the projected reticle image with respect to the fixed reticle 21 represents the magnitude of the error between the gun 1 and the periscope 2, so that the adjustment amount for eliminating the error can be visually observed.

In the above-described embodiments, the projection reticle and the fixed reticle have a cross shape. However, the projection reticle and the fixed reticle are not limited to this. Further, although the reflecting mirror is attached to the rack in the above-mentioned embodiment, it goes without saying that it may be attached to the barrel.

Although the pentaprism 11 is used in the periscope 2 in the above embodiment, it is needless to say that it can be a reflecting mirror.

[Effects of the Invention] As described above, according to the present invention, an autocollimator is attached to the eyepiece of a periscopic sighting telescope, that is, a periscope, and a reflecting means is attached to the gun to project a projected reticle image from the autocollimator. Give it to the reflective means through a periscope
By projecting the projected reticle image reflected and returned on the fixed reticle to measure the interlocking error and / or vertical travel accuracy, the entire elevation range is continuously measured regardless of the elevation angle. Can be measured. Moreover, since the autocollimator is multiplied by the magnification of the periscope, the magnification is increased as a whole without increasing the magnification of the autocollimator, and highly accurate measurement can be performed. Further, unlike the conventional collimator method, there is no need to consider the method and the center of rotation of the periscope, the angular interval, etc., so that the setting can be facilitated, and it is configured by a single autocollimator and reflecting means. Therefore, there is an effect that the measuring device can be downsized.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of a reticle of a periscope, FIG. 3 is a diagram showing an example of a projection reticle, and FIG. 4 is between a gun and a periscope. FIG. 9 is an explanatory diagram of a relationship between a fixed reticle and a projected reticle image when there is an error in the image. 1 ... gun, 2 ... periscope sighting telescope (periscope), 3
...... Auto collimator, 4 ...... Reflecting mirror, 5 …… Barrel, 6 …… Rotating, 8 …… Declining mirror, 18 …… Projection reticle, 21 …… Fixed reticle

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideyuki Konishi Inventor Hideyuki Konishi 3-20-1 Nakase, Kawasaki-ku, Kanagawa Prefecture Komatsu Plant Kawasaki Plant (72) Inventor Kenjiro Okamura 1324, Uetakecho, Omiya City, Saitama Prefecture Address inside Fuji Photo Optical Co., Ltd.

Claims (1)

[Claims] Claim: What is claimed is: 1. A device for measuring the interlocking accuracy between a tilting gun and a periscopic aiming telescope that is interlocked with the tilting of the gun, and / or the vertical travel accuracy, the aiming telescope. An autocollimator removably attached to the eyepiece part of the, and a reflecting means removably attached to the gun so as to optically oppose the autocollimator and the sighting telescope. A collimator includes a projection reticle and a fixed reticle, provides a projection reticle image provided by the projection reticle to the reflecting means through the aiming telescope, and is reflected by the reflecting means and returns through the aiming telescope. An interlocking accuracy / vertical travel accuracy measuring device configured to project a projected reticle image onto the fixed reticle.