JPH0868931A - Facial angle adjustment device - Google Patents

Abstract

PURPOSE: To take a large adjustment tolerance of a facial angle, to hold the adjusted facial angle without providing a fixing means, to facilitate the processing of the divided surface of a movable part and a fixed part and to secure the angle adjusting accuracy of a surface to be adjusted. CONSTITUTION: The spherical surface of a movable body 1 provided with the surface to be adjusted and the spherical surface is made to abut on the aperture end part 2b of a circular hole 2a formed on the fixed part 2. Besides, a screw 3a and a spring 4a are provided between a cover 5 fitted to the fixed part 2 and the movable body 1. By freely slidably pressing the movable body 1 to the fixed part 2 side and moving the screw 3a forwards and backwards, the angle of the surface to be adjusted is adjusted and the movable body 1 is supported on the fixed part 2 side at the same time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface angle adjusting device for adjusting an optical axis using a mirror or the like in an optical measuring instrument using light.

[0002]

2. Description of the Related Art Conventionally, as this type of device, a device disclosed in, for example, Japanese Utility Model Laid-Open No. 4-107215 is known. As shown in FIG. 9, the apparatus described in the publication has a movable part 12 on which an alignment mirror 13 is mounted, and a movable part 12
An alignment mirror while sliding the movable portion 12 on the split surface 15 by slidably contacting the fixed portion 11 for fixing the slide surface with the split surface 15 forming a spherical surface and advancing and retracting the plurality of adjusting screws 14. The movable portion 12 is fixed to the fixed portion 11 at the same time when the surface angle of 13 is adjusted.

[0003]

However, when the surface angle adjusting device having the conventional structure is used, the dividing surface 15
The spherical surface must be machined on both sides, and the spherical surface must be machined with high precision in order to ensure the accuracy of the surface angle adjustment, or the adjusting screw 14 is the movable part 12
Since it is provided through the hole 16 formed in the hole, there is a problem that the adjustment allowance can be obtained only for the gap between the outer diameter of the screw 14 and the hole 16.

Therefore, the present invention has been made in view of the above problems, and facilitates the machining of the split surface between the movable portion and the fixed portion to ensure the surface angle adjustment accuracy of the adjusted surface, and the fixing means. An object of the present invention is to provide a surface angle adjusting device that can maintain the adjusted surface angle without providing it and can take a large allowance for adjusting the surface angle.

[0005]

In order to achieve the above object, a surface angle adjusting device of the present invention comprises a movable body having a surface to be adjusted, a fixed portion slidably supporting the movable body, and the fixed portion. A support provided with a pressing member that is attached to the fixed part and that adjusts the angle of the surface to be adjusted while advancing and retracting the movable part while slidably supporting the movable part against the fixed part side. The contact surface between the movable body and the fixed portion has a spherical surface formed on one side of the movable body and the fixed portion, and the movable body and the fixed portion on the other side are circular line contacts. Is formed, or a shape which is always in contact with at least three points in the same plane is formed.

[0006]

According to the device of the present invention, the contact state between the movable body and the fixed portion does not change even if the relative angle between the movable body and the fixed portion is arbitrarily changed while the movable body and the fixed portion are in contact with each other. The angle with the section can be set arbitrarily. Further, by providing the supporting member including the pressing member so as to support the movable body from the direction in which the movable body is pressed against the fixed portion, the surface angle adjustment and the support of the movable body can be realized at the same time.

[0007]

Embodiments of the present invention will be specifically described below with reference to the drawings. In each of the embodiments, common points will be denoted by common reference numerals and corresponding description will be omitted.

[0008]

First Embodiment FIGS. 1 and 2 show a first embodiment of the present invention, FIG. 1 is a sectional view of a main part of a surface angle adjusting device, and FIG. 2 is a plan view of FIG. In this embodiment, the hole 2a having a circular cross section
The convex spherical surface 1c of the movable body 1 having the adjusted surface 1a and the substantially hemispherical body 1b having the convex spherical surface 1c is slidable with respect to the upper opening end 2b of the hole 2a of the fixed portion 2 in which the Abutting against.

On the upper surface of the fixed portion 2, a cover 5 having a gate-shaped cross section and two springs 4 for supporting the movable body 1.
A support member 7 including a and 4b and two adjusting screws 3a and 3b is provided. The cover 5 is fixed to the upper surface of the fixing portion 2 by the four fixing screws 6, and the two springs 4
The positions of a and 4b and the two adjusting screws 3a and 3b are arranged in four equal parts in the vicinity of the outer periphery of the substantially hemispherical body 1b plane portion 1d, and both are arranged next to each other by type.

An appropriate space is provided between the flat surface portion 1d and the inner surface of the cover 5, and the spring 4 is provided between them.
a and 4b are elastically attached, and the two adjusting screws 3a and 3b press the flat surface portion 1d of the movable body 1 through the cover 5 toward the fixed portion 2 side.

As a function of the apparatus having this structure, the fixing portion 2 and the substantially hemispherical body 1b are provided with holes 2 of circular cross section provided in the fixing portion 2.
a Circular line contact is always maintained in the contact state between the upper open end 2b and the convex spherical surface 1c of the substantially hemispherical body 1b.

The surface angle of the surface to be adjusted 1a is adjusted by using a substantially hemispherical body 1.
This is performed by alternately moving the adjusting screws 3a and 3b back and forth against the elastic force of the springs 4a and 4b pressing one side of b. Further, since an appropriate space is provided between the flat surface portion 1d of the movable body 1 and the inner surface of the cover 5, the adjustment screws 3a, 3 are used to adjust the adjusted surface 1a to a desired surface angle.
b can be sufficiently moved back and forth.

Further, adjustment screws 3a, 3 are provided via the cover 5.
Since the movable body 1 is pressed to the fixed portion 2 side by b and the springs 4a and 4b, a sufficient frictional force is generated between the movable body 1 and the fixed portion 2 to support the movable body. Thereby, even if the movable body 1 is adjusted to change the surface angle, the movable body 1 and the fixed portion 2
Since the contact state with the movable body 1 does not change, the movable body 1 can be supported at the same time when the surface angle is adjusted.

According to this embodiment, it is easy to adjust the surface angle of the surface to be adjusted 1a by the adjusting screw while keeping a large margin for adjusting the surface angle. It is possible to support the movable body 1 at the same time while maintaining it. Further, since the convex spherical surface 1b is formed on the movable body 1 side, by setting the radius of curvature of the spherical surface 1b to an appropriate value, the rotation axis at the time of surface angle adjustment can be set on the adjusted surface 1a. it can.

[0015]

Second Embodiment FIGS. 3 and 4 show a second embodiment of the present invention, FIG. 3 is a sectional view of a main part of a surface angle adjusting device, and FIG. 4 is a plan view of FIG. In this embodiment, a taper hole 2c having a circular cross section is formed in the fixed portion 2, and a convex spherical surface 1e formed on the outer peripheral portion of the disk-shaped movable body 1 is slidable with respect to the taper surface of the taper hole 2c. Abutting against.

The radius of the large diameter portion of the tapered hole 2c is larger than the radius of curvature of the convex spherical surface 1e, and the radius of the small diameter portion thereof is the convex spherical surface 1e.
Is smaller than the radius of curvature of the convex surface 1e so that the convex spherical surface 1e is brought into contact with the tapered surface at a position substantially in the middle thereof. Further, the adjusted surface 1a of the movable body 1 is arranged on the smaller diameter side of the tapered hole 2c, and the flat surface portion 1f on the opposite side of the adjusted surface 1a is configured to be sunk into the thickness of the fixed portion 2.

A cover 5 having a flat plate cross section, which is a supporting member, is fixed to the surface of the fixed portion 2 on the side where the movable body 1 is submerged by four fixing screws 6, and the inner surface of the cover 5 and the movable body 1 are fixed. Two springs 4a are provided between the flat portion 1f and the flat portion 1f, as in the first embodiment.
4b and two adjusting screws 3a and 3b are provided so that each of them is brought into contact with the flat surface portion 1f of the movable body 1 and
Is pressed to the fixed portion 2 side.

As a function of the apparatus having this structure, the contact state between the surface of the tapered hole 2c formed on the fixed portion 2 side and the convex spherical surface 1e formed on the outer periphery of the movable body 1 is always kept in a circular line contact. . In this configuration, since the flat surface portion 1f of the movable body 1 that is pressed when the surface angles are adjusted by the springs 4a and 4b and the screws 3a and 3b is depressed from the surface of the fixed portion 2, the cover 5 is flat. In addition to being able to be formed into a shape, it is possible to obtain a sufficient surface angle adjustment allowance in the space due to the depression of the flat surface portion 1f. Further, the adjustment of the angle of the adjusted surface 1a is the same as that of the first embodiment, and therefore its explanation is omitted.

According to this embodiment, it is easy to adjust the angle of the surface to be adjusted 1a while keeping a large amount of adjustment of the surface angle by the adjusting screw, and at the same time, the movable body 1 is supported by the fixed portion 2. be able to. Further, since the flat surface portion 1f of the movable body 1 is sunk into the thickness of the fixed portion 2, the device can be downsized as compared with the case of the first embodiment.

[0020]

Third Embodiment FIGS. 5 and 6 show a third embodiment of the present invention, FIG. 5 is a sectional view of a main part of a surface angle adjusting device, and FIG. 6 is a plan view of FIG. In the present embodiment, contrary to the case of the first embodiment, the concave spherical surface 2d is formed on the fixed portion 2 side, and the movable body 1
A cylindrical shape (or a cylindrical shape) is formed on the side, and the cylindrical end portion 1g is slidably brought into contact with the concave spherical surface 2d.

A cover 5, which is a support member having a gate-shaped cross section, is fixed to the surface of the fixed portion 2 by four fixing screws 6, and the adjusted surface 1a of the movable body 1 and the inner surface of the cover 5 are fixed to each other. In the same manner as in the first embodiment, two springs 4a and 4b and two screws 3a and 3b are provided between them to bring them into contact with the adjusted surface 1a of the movable body 1 and to fix the movable body 1 to the fixed portion 2 It is pushing to the side.

As a function of the device having this structure, the contact state between the concave spherical surface 2d formed on the fixed portion 2 and the cylindrical end portion 1g is always kept in a circular line contact. The other configuration is similar to that of the first embodiment, and therefore its description is omitted.

According to this embodiment, it is easy to adjust the angle of the surface to be adjusted 1a while keeping a large amount of adjustment of the surface angle by the adjusting screw, and at the same time support the movable body 1 to the fixed portion 2. It can be carried out. In addition, the movable body 1
When the attachment structure has to be changed in accordance with the change of the object to be attached to the movable body 1, since the structure of the movable body 1 is a column or a cylinder, it is easy to process the new movable body 1.

[0024]

Fourth Embodiment FIGS. 7 and 8 show a fourth embodiment of the present invention, FIG. 7 is a sectional view of an essential part of a surface angle adjusting device, and FIG. 8 is a plan view of FIG. The present embodiment is different from the second embodiment in that the fixing portion 2 is formed with a taper hole 2e having a circular cross section instead of forming the taper hole 2c having a circular cross section, and other configurations are implemented. Similar to Example 2.

As a function of the apparatus having this structure, the convex spherical surface 1e formed on the disk-shaped outer periphery of the movable body 1 is point-contacted with each taper plane by forming the tapered hole 2e having a square cross section in the fixed portion 2. Becomes Then, in the tapered hole 2e, four point contacts are always kept in the same plane. The other structure is similar to that of the second embodiment, and therefore its explanation is omitted.

According to this embodiment, it is easy to adjust the angle of the surface to be adjusted 1a while keeping a large amount of adjustment of the surface angle by the adjusting screw, and at the same time, the movable body 1 is supported by the fixed portion 2. be able to. Further, since the fixed portion 2 contacts the movable body 1 at four points, a small amount of force is required when adjusting the angle of the adjusted surface 1a. Also, the screws 3a,
Regardless of the accuracy of the mounting position of 3b, it is possible to rotate about two axes passing through two contact points facing each other.

The square taper hole 2e formed in the fixed portion 2 in the fourth embodiment is not limited to a square cross section but a triangular hole having a triangular cross section, and the movable body 1 is contacted at three points in the taper hole. Good. Further, the surface angle adjusting screws 3a and 3b used in Examples 1 to 4 are not limited to general screws, but may be contact length measuring devices such as micrometer heads or actuators such as laminated piezoelectric actuators. You may use.

[0028]

According to the present invention, the angle of the surface to be adjusted is adjusted while keeping a large margin for adjusting the surface angle by the adjusting screw, so that the adjustment is easy and the movable body having the surface to be adjusted is always fixed. Since it is pressed toward the fixed portion side, the movable body can be supported on the fixed portion side while maintaining the adjusted surface angle without separately providing the fixing means. Further, the divided surface between the movable portion and the fixed portion can be easily processed, and highly accurate surface angle adjustment can be ensured.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a surface angle adjusting device showing a first embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a sectional view of a main part of a surface angle adjusting device showing a second embodiment of the present invention.

FIG. 4 is a plan view of FIG.

FIG. 5 is a sectional view of a main part of a surface angle adjusting device showing a third embodiment of the present invention.

FIG. 6 is a plan view of FIG.

FIG. 7 is a sectional view of a main part of a surface angle adjusting device showing a fourth embodiment of the present invention.

FIG. 8 is a plan view of FIG.

FIG. 9 is an explanatory view of a conventional surface angle adjusting device.

[Explanation of symbols]

 1 Movable body 1a Adjusted surface 1b Approximately hemispherical body 1c, 1e Convex spherical surface 1d, 1f Flat surface part 1g Cylindrical end part 2 Fixed part 2a Circular hole 2b Open end part 2c Tapered hole 2d, 2e Concave spherical surface 3 Adjustment screw 4 Spring 5 Cover 6 Fixing screw 7 Support member

Claims (3)

[Claims] 1. A movable body having a surface to be adjusted, a fixed portion slidably supporting the movable body, and a fixed portion attached to the fixed portion and slidably supporting the movable body with respect to the fixed portion. A surface angle adjusting device comprising: a support member having a pressing member that adjusts an angle of a surface to be adjusted while advancing and retracting in a state and simultaneously presses a movable body toward a fixed portion. 2. The contact surface between the movable body and the fixed portion forms a spherical surface on one of the movable body and the fixed portion, and on the other side, the movable body and the fixed portion make circular line contact. The surface angle adjusting device according to claim 1, wherein the surface angle adjusting device is formed by forming a power shape. 3. The contact surface between the movable body and the fixed portion has a spherical surface formed on one of the movable body and the fixed portion, and on the other side, the movable body and the fixed portion are always at least in the same plane. 2. The surface angle adjusting device according to claim 1, wherein the surface angle adjusting device is formed in a shape that should make point contact with three or more points.