DE102008063996A1 - Table for object to be positioned under optics of microscope, has coupling element arranged on cross of intersection point of bars, such that one bar is carried away during displacement of element, where tabletop is arranged on element - Google Patents

Abstract

The table has a rotatable working tabletop (9) for accommodation of objects. The tabletop is adjustable in position on a rectangular table body (1) containing guiding rods. Each rod is assigned to a bar, which is displaceable with an end along the rod by a displacing element and projects with another end with respect to the rod. A plate-shaped coupling element is arranged in a displaceable manner on a cross of intersection point of the bars, such that one of the bars is carried away during displacement of the coupling element along another bar. The tabletop is arranged on the coupling element.

Description

The The invention relates to a table for Objects according to the preamble of claim 1.

Of the table according to the invention serves for objects with regard to its intended use, in particular, a the object of the desk table object quickly and precisely under one Optics of a microscope or under a tool to position. When used with a microscope is on the work table the object to be examined with the object to be examined.

at Microscopes are known, object tables with a setting device equip. However, these are not optimally designed, and although regarding the setting of the desired position. Also is it is not possible that the XY coordinates measured and over an external device can be displayed for example, to perform surveys of the object can.

From that Therefore, the invention is based on the object, a Table for Objects with an improved position adjustable work table for To create a shot of the object.

The technical solution is characterized by the features in the characterizing part of claim 1.

Of the table according to the invention serves for objects In addition, an object located on the work table can be quickly and precisely submerged the optics of a microscope or under a tool to position. there The work table can be technically simple either manually or else by motor to the desired position become. By using four guides and two on it by means of moving elements movable connecting webs is a in the two directions perpendicular to each other defined adjustable crossing point formed by the two connecting webs. According to the invention this Crossing point connected to a coupling element. Everybody leads Point in the plane covered by the crossing point the travel path of the two connecting webs. It does not matter if the two Connecting webs are moved simultaneously or in succession. On the coupling element is the work table (in the case of a microscope the measuring table) rigidly attached. The particular advantage of the table according to the invention for objects consists in the very flat design. Besides, a complete cover the precise one Mechanics inside the table ensured. If necessary can the table completely sealed against external influences become.

The Training according to claim 2 with the rectangular, in particular square shape of the table body as well as with the longitudinal of the four insides of the rectangle extending guides has the advantage of being inside the table is the travel surface of the work table. By the two guides are maximally spaced, thereby a very high positional accuracy achieved.

The Training according to claim 3 has the advantage that through the plate-shaped Training the coupling element of the table overall very flat builds. However, they are alike also other physical Formations of the coupling element conceivable, such as cubic Coupling elements.

A The first alternative with regard to the movement of the coupling element beats according to claim 4 before that Coupling element is manually displaceable. This means that through a simple manual movement either in the X direction or in the Y direction or combined in both directions the coupling element and thus the work table in the desired Position is transferable.

Preferably can according to the training provided in claim 5 means for additional fine adjustment be. This has the advantage that the Worktable with the object located on it quickly and extremely precisely positioned can be. It can with respect to each connecting bar on one side a (simple) guide bearing and on the other side with a guide bearing Be integrated fine adjustment. Thus, a manual quick adjustment of the work table over the total possible displacement surface and possible from any position taken. After manual adjustment a fine adjustment of the position taken by the integrated fine adjustment device. As a result, this means that the work table first is roughly adjusted by hand, so that subsequently made the fine adjustment can be.

A concrete technical realization of fine tuning sees the training according to claim 6 before. This allows the fine adjustment of two on the side surfaces of the table body led out and equipped with a rotary knob equipped axles in the desired position. In this case, the axis on which the fine adjustment device is arranged is, in the table body executed rotatable about its central axis and in the longitudinal direction fixed.

Alternatively, according to the embodiment in claim 7, the guide may be formed as a rotatable fine-threaded spindle. On this, the traversing element of the connecting web is arranged with a corresponding internal thread. This is created the possibility to replace the previously described rotatable axes of the first variant by a fine thread spindle with motorized and if necessary computer-controlled, programmable drive. A manual shift is then no longer possible and is unnecessary, moreover.

The Variant in claim 9 finally proposes a further motor drive before. The basic principle is that in the coupling element, a drive device is arranged, which in Active connection with the connecting webs is. This can be extremely precise as well rigid guide elements which are the resolution and repeatability increase the XY position many times over. This alternative allows integration each of a computer controlled, programmable drive element for example in the form of a piezoelectric element in the X-slider or in the Y-slider of the coupling element. This allows the position to be approached quickly and with high precision and Repeat accuracy can be achieved.

A Another preferred embodiment proposes according to claim 9, that the coupling element equipped with its work table with a position measuring device. The position of the object can be continuously to an external Display transmitted become. This is done by a measuring system that is in the table when needed can be integrated.

A first alternative sees according to the training in claim 10, that the Connecting webs are each assigned a Wegmeßelement and that the coupling element with an X-way measuring electronics and with a Y-way measuring electronics stocked is. about flexible cables can the electronic data of the X position and Y position of a crossing point the two connecting bars for display on an external display or be led out for further processing by means of a computer.

One alternative measuring system beats the development according to claim 11 before. This variant allows an integration of a highest precise XY-path measuring system. In this case, the path-measuring plate are rigidly connected to the coupling element, while in the center axis of the Base plate of the table body the path measuring electronics is fixed. The path measuring electronics transmitted the electronic data of the X and Y position of a crossing point for display on an external display or for further processing on a computer.

Two embodiments a table according to the invention for objects will be described below with reference to the drawings. In these shows:

1 a perspective view of the table of the first embodiment;

2 a bottom view of the table in 1 ;

3 the presentation of the table correspond to the one in 2 but with the bottom removed;

4 a perspective view in the region of the traversing element on the axis of the guide;

5 a perspective view of the table of the second embodiment, in which, however, the top of the table body (below the work table) is omitted;

6 a bottom view of the table;

7 a representation according to the in 5 but with the work table removed;

8th a representation according to the in 6 , but with removed base plate of the table body.

The 1 to 4 show a first embodiment and the 5 to 8th a second embodiment of a table for objects, as it can be used for microscopes or for editing tools.

The first embodiment in 1 to 4 shows the table with a table body 1 , which is designed as a flat cuboid with a square outline.

Inside the table body 1 extend along the four inner side guides 2 in the form of axes with round cross section. This form parallel opposing guides 2 one guide pair each. The one axis of leadership 2 is rotatable while the other axis is not rotatable. Both axes are fixed in the longitudinal direction. The axis which is rotatable has in the outer region of the table body 1 a knob 3 on.

On the rotatable axis of the guide 2 is a traversing element 4 arranged by hand longitudinally displaceable. In this traversing element 4 is a sleeve 5 screwed in with appropriate threads. This sleeve 5 is like the traversing element 4 along the axis of the guide 2 freely movable. But becomes the axis of leadership 2 by means of the rotary knob 3 put into a rotary motion, so coupled by means of balls 6 ( 4 ) the sleeve 5 in a non-rotatable assembly. Thus, these two balls form 6 a lock camp, which locks both directions of rotation.

The opposing traversing elements 4 are by flat connecting webs 7 connected with each other. In the area where the two mutually perpendicular connecting webs 7 meet each other in a cross, is a plate-shaped coupling element 8th arranged. This encompasses the two connecting bridges, so to speak 7 and is guided on this displaceable. In the interior thus form the coupling element 8th a sort of guide tunnel for the two connecting bridges 7 , With this coupling element 8th is a work table 9 firmly connected.

Between the coupling element 8th and the connecting webs 7 is additionally arranged a position measuring device. This can be based on a capacitive measuring principle by the flat connecting webs 7 are provided with a measuring film. In the coupling element 8th then there is the corresponding measuring head. The measured values are transmitted via flexible cables 10 led to the outside.

The operation is as follows:
First, the work table 9 roughly shifted by hand to the desired position. The shift of the work table 9 causes a corresponding displacement of the coupling element 8th on the connecting bridges 7 , For example, in the drawing in 3 the coupling element 8th Moves up or down, becomes the horizontal connecting bar 7 taken. The same applies accordingly for a horizontal movement of the coupling element 8th in the drawing. Of course, also an oblique displacement of the coupling element 8th be performed. In any case, by the movement of the connecting webs 7 by means of the coupling element 8th the traversing elements 4 on the axes of leadership 2 postponed.

After this coarse adjustment, the fine adjustment takes place. To do this, turn on the knobs 3 rotated accordingly, so that the axes of the guide 2 be put in a rotary motion. Through the above-described balls 6 There is a blocking effect in both directions of rotation, so that by the rotational movement of the axis of the guide 2 the sleeve 5 is taken. Through the thread between the traversing element 4 and the sleeve 5 thus becomes the traversing element 4 along the axis of the guide 2 postponed.

The embodiment of the 5 to 8th also has a table body 1 , lateral guides 2 (but no knob 3 , because no rotatable axes are provided), traversing elements 4 , Connecting bridges 7 and a coupling element 8th which is fixed to the work table 9 connected is. In this respect, there is agreement with the first embodiment. The difference lies in two constructive modifications:
On the one hand, the adjusting movement of the coupling element takes place here 8th (and thus the work table 9 ) motor. For this purpose is in the coupling element 8th a drive element, for example in the form of a piezoelectric element in interaction with the connecting webs 7 integrated. The drive can be computer-controlled.

On the other hand, an alternative position measuring system is provided here. The underside of the coupling element 8th is with a measuring plate 11 provided, which has optical structures. In the bottom of the table body 1 there is a measuring head 12 , This is rigidly arranged.

The operation is as follows:
By means of the drive in the coupling element 8th is this and thus the work table 9 move to the desired position. The traversing elements become 4 the guides 2 moved accordingly.

By the movement of the coupling element 8th re to the table body 1 the measuring plate moves 11 accordingly with and is at the measuring head 12 past. The measured values are in turn led to the outside and either displayed or processed in a computer.

1

table body

2

guide

3

knob

4

movement element

5

shell

6

Bullet

7

connecting web

8th

coupling element

9

worktable

10

management

11

measuring plate

12

measuring head

Claims (11)

Table for objects with a table body ( 1 ) as well as with one on the table body ( 1 ) position adjustable work table ( 9 ) for receiving the object, characterized in that the table body ( 1 ) four, a rectangle forming guides ( 2 ), that each guide pair of the two of two opposing guides ( 2 ) formed guide pairs a perpendicular thereto connecting web ( 7 ), which along the guides ( 2 ) by means of a traversing element ( 4 ) is movable, that on the intersection point of the two connecting webs ( 7 ) a coupling element ( 8th ) ver is arranged slidably, that when moving the coupling element ( 8th ) along the one connecting web ( 7 ) the other connecting bridge ( 7 ) and that the worktable ( 9 ) fixed to the coupling element ( 8th ) connected is. Table according to the preceding claim, characterized in that the table body ( 1 ) is rectangular and that the guides ( 2 ) extend along the four insides of the rectangle. Table according to one of the preceding claims, characterized in that the coupling element ( 8th ) is plate-shaped. Table according to one of claims 1 to 3, characterized in that the coupling element ( 8th ) is manually displaceable. Table according to claim 4, characterized in that a device for additional Fine adjustment is provided. Table according to claim 5, characterized in that the guide ( 2 ) an axis is that at least one axis of each pair of axles is rotatable with respect to its longitudinal axis that the Verfahrelement ( 4 ) of the connecting bridge ( 7 ) is longitudinally displaceably guided on the axis that a sleeve ( 5 ) is longitudinally displaceably arranged and guided with an external thread on the rotatable axis and in an internal thread of the associated Verfahrelements ( 4 ) is screwed in and that when turning the axis of the sleeve ( 5 ) is rotatably coupled to the axis. Table according to one of claims 1 to 3, characterized in that the guide ( 2 ) is designed as a rotatable fine-threaded spindle, on which the traversing element ( 4 ) of the connecting bridge ( 7 ) is arranged with a corresponding internal thread. Table according to one of claims 1 to 3, characterized in that the coupling element ( 8th ) a drive device in operative connection with the connecting web ( 7 ) has a motor drive. Table according to one of the preceding claims, characterized characterized in that Coupling element is equipped with a position measuring device. Table according to claim 9, characterized in that the position-measuring device between the coupling element ( 8th ) and the connecting webs ( 7 ) is trained. Table according to claim 9, characterized in that the position-measuring device by a measuring head ( 12 ) and lying in the displacement plane measuring plate ( 11 ) is formed, which on the one hand on the table body ( 1 ) and on the coupling element ( 8th ) are arranged.