WO2016119779A1

WO2016119779A1 - Optical mount with at least one clamping unit comprising a tension bolt

Info

Publication number: WO2016119779A1
Application number: PCT/DE2016/100033
Authority: WO
Inventors: Torsten Erbe
Original assignee: Jenoptik Optical Systems Gmbh
Priority date: 2015-01-30
Filing date: 2016-01-28
Publication date: 2016-08-04
Also published as: WO2016119779A4; DE102015101385B3

Abstract

The invention relates to an optical mount with an outer ring (1), an inner ring (2), at least two manipulator units by means of which the inner ring (2) can be adjusted with respect to the outer ring (1) in an adjustment plane that is vertical to a mount axis, and at least one clamping unit, which acts independently of the manipulator units and comprises a clamping base having two clamping jaws (6) connected to a bridge (15) and the outer ring (1) via connecting pieces (16.1, 16.2), a clamping piece (5) arranged between the clamping jaws (6), and a tension bolt (7) by means of which a set adjustment position can be fixed by clamping of the clamping piece (5).

Description

Optical socket with at least one clamping unit with a lag screw

The invention relates to an optical socket having an inner ring for receiving an optical element to be grasped and an inner ring coaxial outer ring, wherein the inner ring is adjustable in an adjustment plane perpendicular to the axis of the outer ring. In contrast to the known from the prior art versions of this type, the version according to the invention in addition to manipulator units, via which the adjustment is made thereof independently operable clamping units.

Frames of such a type are preferably made monolithically. That is, the subdivided into an inner ring and an outer ring socket was made by inserting slots in a body, wherein between the inner ring and the outer ring remain connections. A variety of such known from the prior art versions differ in particular in the execution of these remaining compounds, which is essentially determined by the position, the geometry and the dimensioning of the slots, and basically represent webs or web assemblies. At least two of these Connections grip in the outer ring mounted adjusting elements, eg. B. screwed screws on. With the introduction of a travel by means of one of the adjusting elements in one of the compounds of the inner ring and thus the axis of the inner ring (inner ring axis) relative to the outer ring and thus the outer ring axis is moved by a displacement. Since the optical element and thus the optical axis of a captured in the inner ring optical element has a fixed position to the inner ring axis, so the position of the optical axis can be adjusted.

Depending on the design of the connections and the direction of an introduced travel, the direction of the resulting displacement and the sensitivity of the implementation of the travel are determined in the displacement. The design and number of connections is also decisive for the stiffness or compliance of the connection between inner and outer ring perpendicular to the adjustment plane. The published patent application DE 199 01 295 A1 discloses an optical assembly with a monolithic type identical socket, consisting of an outer ring (there outer socket) and an inner ring and differently shaped connections between the inner ring and the outer ring. The differently designed connections represent solid-state articulated couplings or transmissions made of solid-state articulated couplings.

According to the aforementioned DE 199 01 295 A1, in each case a radially acting actuator (in this case adjusting screw) acts on the connections of one embodiment. Within the meaning of the invention, one of the connections, in cooperation with one actuator in each case, constitutes a manipulator unit. The adjustment paths introduced in each case by the two setscrews are sensitively reduced in mutually independent displacement paths. Here, the sensitivity is determined in each case by the translation of the screw, the translation of the lever mechanism and the implementation of the translational movement in a rotary motion about a Drehpol.

This version is for a very small adjustment range, probably from 10 to 20 pm, and a very sensitive adjustment, probably with a resolution higher than 2 μητι designed, which is characterized by the very low transmission ratio (also known as high reduction ratio) of the Adjustment lever initiated travel to the resulting displacement explains. The connections are stiff in the axial direction and soft in the radial direction in order to make the adjustment with only a small force.

A similar version with a comparatively larger adjustment range is known from DE 10 2013 109 605 B3. The manipulator units differ here from those of the aforementioned DE 199 01 295 A1 in that the connections forming them are formed by a geometrically different slot guide. Advantageously, further compounds are present at which attack no screws and therefore do not form manipulator units. They serve only for axial stiffening of the socket and can be arranged in any number and at random positions. The compounds belonging to the manipulator units are formed from webs which have a distributed over their length compliance. But the webs can also run thicker over their length and thus be relatively stiff if they have at the transitions to the inner ring or outer ring tapers, so that these transitions have a high compliance and form solid joints. Regardless of their design, the compounds thus formed are soft in the radial direction.

A version according to the aforementioned DE 10 2013 109 605 B3 is compared to the above-mentioned DE 199 01 295 A1 by a comparatively small reduction of the initiated travel paths in displacement paths less sensitive. The resolution is here at 1 - 2 pm. However, it is suitable for a larger adjustment range up to approximately 100 pm and can be designed so that it must be accessible for adjustment of only one side.

In WO 99/67683 A2 a version is described, which is used for the targeted deformation of recorded optical elements. The socket consists of an outer ring and an inner ring, which are connected via at least two articulated connections. The two hinged connections are arranged opposite each other and can also be monolithic. The deformation takes place via two setscrews which act radially or else axially on the inner ring and which are received diametrically opposite in the outer ring and can introduce the bending forces into the inner ring. The two articulated connections and screws are offset by 90 ° to each other arranged on the socket.

From US 7 916 408 B2 an example of a non-monolithic socket is known, also consisting of an outer ring and a coaxially arranged and radially adjustable inner ring. To adjust a right angle with each other enclosing screws are screwed in the outer ring in the radial direction, each indirectly via a ball acting on a pin which rests indirectly via a second ball on the inner ring. Such an arrangement, in the context of the invention, constitutes a manipulator unit. By screwing in the set screws, the inner ring is displaced in a radial plane. A counteracting the set screws Restoring force is caused by a spring-loaded element tangentially on the inner ring. As with the monolithic versions shown, the manipulator units are soft in the radial plane, ie elastic.

Both the monolithic versions shown and the non-monolithic version shown are shown only by way of example and could be supplemented by a large number of other versions of the same type. They all have in common that the socket in a plane perpendicular to the socket axis, which is formed by the axis of the outer ring is elastic. That is, forces acting in this plane can temporarily lead to a basically reversible deflection of the inner ring from its adjustment position. As a rule, the deviations in position of the optical element in the socket when it is returned to the adjustment position are so small relative to the adjustment position that they lie within an acceptable tolerance. However, with very high accuracy and stability requirements for an optical system, these positional deviations may be out of tolerance, which is why, with very high accuracy and stability requirements, it is of interest to secure the adjusted optical element in the alignment position. It is particularly important that the position assurance does not itself lead to a misalignment and that it is solvable.

It is the object of the invention to find a socket with an outer ring and a coaxially arranged thereto and radially adjustable by manipulator units inner ring for holding an optical element, wherein the inner ring relative to the outer ring of the manipulator units can be independently secured in position releasably. Advantageously, the transmission of torque to the inner ring should be avoided when securing the position.

This object is for an optical version with at least one clamping unit with a lag screw, comprising an outer ring with a socket axis, a coaxial inner ring and at least two outer ring and the inner ring connecting manipulator units, by means of which the inner ring relative to the outer ring in a direction perpendicular to the socket axis Adjustment level is adjustable, solved. In this case, at least one arranged within the outer ring clamping unit is provided which is mirror-symmetrical to an axis of symmetry. She points a clamping body on, with two clamping jaws, each having an inner connecting web, an inner web axis having, with one end of a rigid bridge and an outer connecting web, an outer web axis having, with the outer ring in conjunction. Between the jaws a fixedly connected to the inner ring Klemmklötzchen is arranged. The lag screw is screwed along the axis of symmetry through the outer ring into the bridge, so that with a further screwing the lag screw the bridge is pulled away from the socket axis with simultaneous deformation of the respective inner and outer connecting webs, whereby the jaws are moved towards each other and the Klemmklötzchen is clamped. The inner bridge axes each include a second angle with the symmetry axis that is greater than or equal to 0 ° and less than 90 °. Likewise, the outer bridge axes each include a third angle with the axis of symmetry which is greater than or equal to 0 ° and less than 90 °. In this case, the second angle is less than or equal to the third angle, and the axis of symmetry includes a first angle with a radial direction to the socket axis, which is also greater than / equal to 0 ° and less than 90 °.

Advantageously, the axis of symmetry in the radial direction to the socket axis, the web axes are arranged parallel to the axis of symmetry and the clamping pad is formed by a cuboid, as usual, the socket has a constant thickness. Geometric deviations from a cuboid due to a non-constant thickness, that is, the expansion in the direction of the socket axis changes depending on the radius, are neglected here.

Alternatively, it is advantageous if the second angle is greater than 0 ° and the clamping pad is formed by a four-sided straight prism whose cross section is an isosceles trapezoid with a trapezoidal angle of 90 ° minus the second angle.

It is advantageous if the third angle is equal to the second angle, so that in each case the outer and inner bridge axes, which are in each case connected to a clamping jaw, run parallel to each other.

Alternatively, the third angle may be greater than the second angle. Advantageously, the inner ring monolithically connected to the clamping pad and / or the jaws monolithically connected to the outer ring.

Alternatively, the clamping pad may be formed on a first plate mounted on one of two end faces of the inner ring.

The invention will be explained in more detail with reference to exemplary embodiments with the aid of drawings. Show:

1 is a mechanical equivalent circuit diagram for a clamping unit,

2a shows a first embodiment of a clamping unit, in which the

Klemmklötzchen and the jaws are made monolithic and the axis of symmetry extends radially to the socket axis,

2b shows a second embodiment of a clamping unit, in which the

Clamping blocks and the jaws are made monolithic and the symmetry axis includes a first angle with a radial direction to the socket axis,

Fig. 2c shows a third embodiment of a clamping unit, in which the

Klemmklötzchen and the jaws are made monolithic and the inner web axis or the outer web axis with the symmetry axis include a second or third angle, wherein the second and the third angle are the same size,

Fig. 2d shows a fourth embodiment of a clamping unit, in which the

Klemmklötzchen and the jaws are made monolithic and the inner web axis or the outer web axis with the symmetry axis include a second or third angle, the second and the third angle are unequal size,

Fig. 3 shows a fifth embodiment of a clamping unit, in which the

Jaws are made monolithic and the Klemmklötzchen is formed on a discretely produced plate, 4 shows a sixth exemplary embodiment of a clamping unit, in which the clamping jaws are formed on a discreetly produced clamping body and the clamping pad is formed on a discretely produced plate,

Fig. 5a is a schematic diagram of a version in which the axes of symmetry of the three

Fig. 5b is a schematic diagram of a socket, in which the axes of symmetry of the three

Clamping units each include a first angle with a radial direction,

Fig. 5c is a schematic diagram of a version in which the symmetry axes of the three

Clamping units each extend along a radial direction and include a second angle with the web axes of each of the clamping units, and Fig. 5d is a schematic diagram of a socket in which the axes of symmetry of the three

Clamping units each include a first angle with a radial direction and include a second angle with the web axes.

All versions of a version according to the invention, see Fig. 5a to 5d, have an outer ring 1 with an axis, hereinafter called socket axis 1.1, a coaxially arranged inner ring 2 and at least two outer ring 1 and the inner ring 2 connecting manipulator units 3, by means of which Inner ring 2 relative to the outer ring 1 is adjustable in a direction perpendicular to the socket axis 1.1 adjustment plane. The execution of the manipulator units 3 is arbitrary, as long as the inner ring 2 is adjustable within the outer ring 1 over it. Examples of possible embodiments of the manipulator units 3 are disclosed in the publications acknowledged in the description of the prior art.

About these features mentioned, which has a version according to the invention with type-like versions of the prior art in addition, a version according to the invention additionally includes at least one, advantageously three spatially arranged within the outer ring 1 clamping units 0, which act independently of the manipulator units 3. The at least one clamping unit is 0 arranged between adjacent manipulator units 3. With it, after the inner ring 2 has been brought into an adjustment position relative to the outer ring 1 via the manipulator units 3, the inner ring 2 can be reversibly fixed in this adjustment position.

Regardless of whether the inner ring 2 and the outer ring 1 are monolithically connected via the manipulator units 3 or monolithically connected, the components of the clamping unit 0, except for a lag screw 7, on the inner ring 2 and outer ring 1 may be monolithic or on discretely manufactured components be arranged, which are fixedly connected to the inner ring 2 and outer ring 1. When subsequently written by a monolithic connection, it is to be understood as a monolithic connection within the clamping unit 0.

In all embodiments of the clamping units 0, these are mirror-symmetrical to an axis of symmetry 4. The symmetry axis 4 lies in a plane perpendicular to the socket axis 1.1. It encloses with a radial direction 1.2 to the socket axis 1.1 a first angle α, wherein the radial direction 1.2 and the symmetry axis 4 preferably intersect on an inner circumferential line 2.2, wherein 0 ° <α <45 °. Preferably, the first angle α is equal to 0 °, so that the symmetry axis 4 coincides with the radial direction 1.2.

In all embodiments, a clamping unit 0 has a mirror-symmetrical to the symmetry axis 4, in the radial direction 1.2 rigid clamping pad 5, which is fixedly connected to the inner ring 2 and projects with a free end 5.1 in the outer ring 1. In the event that the clamping pad 5 is not monolithically connected to the inner ring 2, the clamping unit 0 may advantageously have a further Klemmklötzchen 11, which will be explained later with reference to a specific embodiment.

With parallel end faces of the socket, the clamping pad 5 a cuboid or a four-sided straight prism with two end faces 5.3, which form an isosceles trapezoid represent. Two side edges 5.2 of the clamping block 5 extend parallel to the symmetry axis 4 in the case of a cuboid and in the case of a prism with the axis of symmetry 4, include a second angle β, 0 ° <β <90 °, preferably <45 °. The clamping pad 5 must be radially stiff. In this vertical direction, it may be completely or partially bendable. It can be made significantly thinner than shown in the figures.

Furthermore, a clamping unit 0 basically has a symmetrically symmetrical clamping body 14, which has two clamping jaws 6, a bending-resistant bridge 15 and, per clamping jaw 6, two connecting bars 16.1, 16.2. Each one of the two connecting webs per jaw 6 connects as an inner connecting web 16.2 one of the two jaws 6 with the bridge 15 and each of the other of the two connecting webs per jaw 6 connects as outer connecting web 16.1 the other of the two jaws 6 with the outer ring 1. Der inner connecting web 16.2 has an inner web axis 16.2.1 and the outer connecting web 16.1 has an outer web axis 16.1.1. These may run parallel to each other and to the axis of symmetry 4, but may also include a second angle β or a third angle γ with it, wherein the second angle β and the third angle γ may be the same size or different sizes.

In addition, each of the clamping units 0 belongs along the axis of symmetry 4 through a hole 8 provided in the outer ring 1 guided and engaging in a threaded hole 12 in the bridge 15 lag screw 7. Preferably, the hole 8 in two stages and the screw head of the lag screw 7 in an upper Level of the wellbore 8 lowered. With an increasing screwing or tightening the lag screw 7, the bridge 15, and thus the associated with her jaws 6, pulled outwards and the jaws 6 are moved towards each other, bringing the Klemmklötzchen 5 between them and thus indirectly against the outer ring is clamped.

In all embodiments of a clamping unit 0, the outer connecting webs 16.1 and the inner connecting webs 16.2 can be deflected over their entire length over their entire length and / or formed locally by geometric tapers joints at the connection points against a stress-free undeflected position and thus deformed. A same second angle ß, like him include the inner bridge axes 16.2.1 with the symmetry axis 4, also include the side edges 5.2 of the Klemmklötzchens 5 with the symmetry axis 4 a. The side edges 5.2 of the Klemmklötzchens 5 thus each extend on one side of the axis of symmetry 4 parallel to the inner edge surface 13 of the clamping jaw 6 arranged there. The version of various embodiments will be explained below. The example-related descriptions in each case include the preceding general description and are limited to showing the differences to the embodiments of the clamping units 0.

The clamping units 0 of the selected embodiments can be substantially reduced to the mechanical equivalent circuit diagram shown in FIG.

A first embodiment is shown in Fig. 2a. The Klemmklötzchen 5 is connected to the inner ring 2 and the two jaws 6 are monolithically connected to the outer ring 1 and the bridge 15 via the connecting webs 16.1, 16.2. The socket, with the exception of the draw bolt 7, is preferably produced in one piece by an electroerosion method. The resulting slots preferably have a constant same width. The connecting webs 16.1, 16.2 and thus their web axes 16.1.1 and 16.2.1 run parallel to each other and to the axis of symmetry 4. The symmetry axis 4 extends along a radial direction 1.2.

A second exemplary embodiment illustrated in FIG. 2b differs from the first in that the symmetry axis 4 extends at a first angle α of approximately 45 ° to the radial direction 1.2. Such a design may be advantageous if there is no sufficient space or accessibility from the outside for a radial attachment of a tool for operating the lag screw 7.

A third exemplary embodiment, shown in FIG. 2c, differs from the two aforementioned exemplary embodiments in that the inner connecting web 16.2 and the outer connecting web 16.1 and thus the inner web axis 16.2.1 and the outer web axis 16.1.1 do not run parallel to the axis of symmetry 4 but a same large second angle ß or third angle γ with this include. In the illustrated embodiment, these are at about 30 °. In this case, the clamping pad 5 represents a prism having a trapezoid angle δ, where 90 ° -β = γ. A Such a design is advantageous for the flow of forces between the inner ring 2 and the outer ring 1, in particular when the intersection of the inner bridge axis 16.2.1 of the inner connecting web 16.2 and the symmetry axis 4 is located at the intersection of an imaginary tangent to the outer diameter of the inner ring 2.

Even more favorable for the flow of forces is a fourth embodiment, shown in Fig. 2d, in which the second angle ß and the third angle γ were chosen so that the inner bridge axis 16.2.1 and the outer bridge axis 16.1.1 respectively on the axis of symmetry 4 cut. Advantageously, this point of intersection, forming a pivot point P, at the transition of the clamping pad 5 to the inner ring 2, which is preferably designed to be tapered.

In contrast to the first four embodiments, in a fifth embodiment, shown in Fig. 3, the clamping pad 5 is not monolithic, but formed on a first plate 9, which is mounted on an end face 2.1 of the inner ring 2. Advantageously, an identically formed second plate 10, on which a further clamping pad 11 is formed, mounted on a second end face 2.1 of the inner ring 2 of the first plate 9 opposite one another.

FIG. 4 shows a sixth exemplary embodiment in which the clamping body 14 has been produced as a discrete component and has been inserted into a recess in the outer ring 1. The clamping pad 5 is also formed on a discretely produced first plate 9. This embodiment may be advantageous for the production of large numbers, since a plurality of clamping bodies 14 can be cut as a block and then separated by separation of the block.

Shown in FIGS. 5a-5d are schematic diagrams of the socket according to the invention, in which it is once again shown how the symmetry axes 4 of the individual clamping units 0 in a plane perpendicular to the socket axis 1.1 and the web axes 16.1.1 and 16.1.2 to the respective axis of symmetry 4 can be arranged. Advantageously, the version has three manipulator units 3, which were shown here only as a black box, and three clamping units 0. Basically, it must have at least two manipulator units and two clamping units, and it can also be more than three in each case. The clamping units 0 are also arranged integrated between the manipulator units 3 in the outer ring 1. These should then advantageously be arranged at equal angular distances from each other. It is advantageous if the number of manipulator units 3 and the number of clamping units 0 is the same and the clamping units 0 have equal angular spacings to adjacent manipulator units 3.

LIST OF REFERENCE NUMBERS

0 clamping unit

1 outer ring

1.1 socket axis

1.2 radial direction

2 inner ring

2.1 end face (of the inner ring 2)

2.2 inner circumference line

3 manipulator unit

4 symmetry axis (the clamping unit 0)

5 clamp blocks

5.1 free end (clamp 5)

5.2 side edge (of the clamping block 5)

5.3 end face (of Klemmklötzchens 5)

6 jaw

7 lag screw

8 borehole

9 first plate

10 second plate

11 more clamps

12 threaded hole

13 inner edge surface (the jaw 6)

14 clamping body

15 bridge

16.1 outer connecting bridge

16.1.1 outer web axis (of the outer connecting web 16.1)

16.2 inner connecting bridge

16.2.1 inner bridge axis (of the inner connecting bridge 16.2) first angle

ß second angle

γ third angle

δ Trapeze angle

P pivot

Claims

claims

1. Optical socket with at least one clamping unit (0) with a lag screw (7), comprising an outer ring (1) with a socket axis (1.1), a coaxially arranged inner ring (2) and at least two outer ring (1) and the inner ring (2) connecting manipulator units (3), by means of which the inner ring (2) relative to the outer ring (1) in an adjustment plane perpendicular to the socket axis (1.1) is adjustable, characterized in that at least one within the outer ring (1) arranged clamping unit (0 ) is present, which is mirror-symmetrical to an axis of symmetry (4) and

a clamping body (14), comprising two clamping jaws (6) each having an inner connecting web (16.2), an inner web axis (16.2.1), having one end of a rigid bridge (15) and an outer connecting web (16.1) having an outer web axis (16.1.1), with the outer ring (1) in communication, a between the jaws (6) arranged, with the inner ring (2) fixedly connected Klemmklötzchen (5) and the tension screw (7), which is screwed along the axis of symmetry (4) through the outer ring (1) into the bridge (15), so that with a further screwing the lag screw (7), the bridge (15) of the socket axis (1.1) with simultaneous deformation of the respective inner (16.2) and outer (16.1) connecting webs is pulled away, whereby the jaws (6) are moved towards each other and the clamping pad (5) is clamped, wherein

the inner bridge axes (16.2.1) with the symmetry axis (4) each include a second angle (β), where 0 ° <β <90 °, and the outer bridge axes (16.1.1) with the symmetry axis (4) one each third angle (γ), where 0 ° <γ <90 ° and β <γ, and

the symmetry axis (4) having a radial direction (1.2) to the socket axis (1.1) a first angle (a), wherein 0 ° <a <90 °, includes.

2. Optical mount according to claim 1, characterized in that the axis of symmetry (4) in the radial direction (1.2) to the socket axis (1.1), the outer bridge axes (16.1.1) and the inner bridge axes (16.2.1) are arranged parallel to the axis of symmetry (4) and the clamping block (5) is formed by a parallelepiped.

3. Optical socket according to claim 1, characterized in that the second angle (ß) is greater than 0 ° and the Klemmklötzchen (5) is formed by a four-sided straight prism whose cross section is an isosceles trapezoid with a Trapezwinkel (δ), where γ = 90 ° - ß, is.

4. Optical socket according to claim 3, characterized in that the third angle (γ) is equal to the second angle (ß).

5. Optical socket according to claim 3, characterized in that the third angle (γ) is greater than the second angle (ß).

6. Optical socket according to one of the preceding claims, characterized in that the inner ring (2) is connected monolithically with the Klemmklötzchen (5).

7. Optical socket according to one of the preceding claims, characterized in that the clamping jaws (6) are monolithically connected to the outer ring (1).

8. Optical mount according to one of claims 1 to 5, characterized in that the clamping pad (5) on a first plate (9) is formed, which is fixed on one of two end faces (2.1) of the inner ring (2).

9. An optical socket according to claim 8, characterized in that a second plate (10) on which a further clamping pad (11) is formed, on the other of the two end faces (2.1) relative to the first plate (9) is fixed, so the clamping blocks (5) and the other clamping blocks (11) are opposite.