DE202008015601U1 - System for constructing a device for clamping workpieces - Google Patents

Abstract

Plates- or strut-shaped element for the construction of devices for clamping workpieces with at least one at least one surface preferably edge-parallel arranged T-slot (2) and in the T-slot (2) with their centers (9) regular in a grid (A) determining Arranged on the longitudinal axis of the T-slot (2) lying circular holes (3), characterized that at least one, preferably all of the bores (3) at their Edge (5) is provided with an internal thread or are.

Description

The The invention relates to a plate or strut-shaped element for the construction of devices for clamping workpieces according to the preamble of claim 1. The invention further relates to an attachment for connection to such a plate or strut-shaped element. Furthermore, subject The invention relates to a system for setting up devices for clamping of workpieces and a device for clamping of Workpieces themselves.

Especially, To complex shaped, three-dimensional workpieces positionally accurate aufzuspannen, it has long been known, this particular devices to provide for clamping these workpieces. These are often striven or plate-shaped Single components assembled and with attachments for attachment provided on such individual components. In that regard, form such strut- or plate-shaped elements together with add-on elements a system for building up devices for clamping workpieces.

A many years established on the market and well adopted such a system is the product sold by the Applicant system Alufix ^®, which is formed of cuboidal struts of an aluminum alloy together with attachments and plate-shaped elements, in particular base plates, said elements and parts combined in any manner with one another can be installed. Once built devices can be broken down into their individual components and these components can be used to build new, differently designed devices.

In the system Alufix ^® holes are introduced into the individual strut and plate elements in a grid spacing in which further attachments, eg. As struts or plates, but also clamps and the like. Can be specified. By this particular pitch devices can be reliably built with different, but defined screened dimensions.

A further development of the system Aluxfix ^® consists in such a system in which the basic elements (plates or struts) T-grooves, in which the groove opening widening holes are introduced in grid intervals. Examples of such systems and special attachments are found in the patent applications of the same inventor EP 1 621 283 A1 and EP 1 645 756 A1 shown and revealed. These systems combine the advantage of free displaceability of attachments in the longitudinal direction of the T-slot with the advantages of a given grid, in which the holes are arranged in the T-slots.

In these systems, however, comparatively complicated elements are required in order to fix attachments in the grid of the holes in the T-slots. For this are in the EP 1 621 283 proposed special sliding blocks, which have a bulbous portion which is circular and corresponds in diameter to the diameter of the holes. These sliding blocks must be set with special tools in the T-slots. Another proposal from the EP 1 645 756 A1 consists of specially shaped add-on elements, which have specially shaped Nutensteinabschnitte and are set with many screws in the T-slots of the individual elements.

Here seeks the invention for an improvement. With her an improved plate or strut-shaped element with T-slots and therein introduced holes, which is suitable for a simplified attachment of attachments is suitable. Furthermore, should for connecting to such a ver improved element specially designed attachments are specified and one of such Attachments and plate or striven elements existing system for setting up devices for clamping of workpieces. After all, it is also the goal of the invention, an improved device for clamping workpieces to specify, which is easier to build.

These Task is solved with their partial aspects first by a plate or strut-shaped element for construction of devices for clamping workpieces with the Features of claim 1. Furthermore, an attachment with a such a plate or strut-shaped element, as in Claim 4 is described in its features, a solution This object. With regard to the system for building devices for clamping workpieces is an inventive Solution given in claim 10, an inventive Device for clamping workpieces themselves is in Claim 11 described in their features.

advantageous Further developments of a plate or strut-shaped element The invention are referred to in the claims 2 and 3, advantageous Embodiments of inventive attachments can be Claims 5 to 9 refer to claim 12 is a preferred embodiment of the invention Specified device for clamping workpieces.

According to the invention is in a plate or strut-shaped element for the construction of devices that with at least one T-slot and in the T-groove arranged in a grid defining regular intervals, provided on the longitudinal axis of the T-slot circular holes is provided at least one, but preferably all of these holes at its inwardly facing edge with an internal thread. By this measure, it is possible to define corresponding complementary shaped attachments to the plate or strut-shaped element by simply screwing into the holes. For this purpose, it usually requires no special tool, and there is no sliding blocks complicated introduced and set in the bottom of the T-slot behind the supernatants. With such plate or striven-shaped elements of the invention, the construction of devices for clamping workpieces is considerably simplified, as it is a degradation when corresponding attachments are to be removed again from the holes in the T-slots.

On This way can thus on the plate or striven Element set in a simple manner in grid attachments become. Free of the grid and arbitrary along the T-slots can be moved to other attachments after before using sliding blocks or similar fasteners be arranged, so that also this degree of freedom in construction of devices for clamping workpieces with the help of the plate-like or striven-shaped according to the invention Elements are not lost.

Prefers the diameter of the holes is substantially equal to the maximum Groove width and exceeds this particular low Measure. This results in a sufficiently large Peripheral section in which the internal thread according to the invention can be introduced.

With Advantage are when along a surface of an inventive plate or strut-shaped element two or more parallel guided T-slots are provided, not only the Centers of the holes at a distance of the grid to each other but also the centerline of adjacent T-slots.

One Attachment for connecting to a plate plate as described above or strut-shaped element has according to and according to the invention a in its outer diameter the inner diameter of the holes in the T-slot of the plate or strut-shaped element corresponding threaded portion with an external thread on which external thread for screwing with the internal thread is designed at the edge of the bore. Depending on the application can the external thread on the attachment and the internal thread on the plate or strut-shaped element, more precisely its bore, left or right-hand thread.

at the attachment is preferred to be in one of the T-slots of the screw plate-shaped or striven-shaped element Area of the threaded section on the shape of the bottom of the T-slot has adapted profile. By this measure can In addition, the attachment is supported on the bottom of the T-slot and gains additional hold by a positive fit or an at least approximate to a positive connection.

invention Attachments can basically be of any nature be, z. As mandrels, clamping plates, toggle clamps or the like. A special variant results in the in the claims 6 and 7 or 8 and 9 marked in more detail attachments. Both are essentially with their essential components disc or lens-shaped and have their largest Diameter in the area of the thread. This fact ensures that the attachment can be screwed into the hole, that it is recessed with the threaded portion either in the bore is or at least runs flush with the surface.

The first of the particular in claims 6 and 7 or 8 and 9 more marked attachments has a substantially along the thread axis extending blind hole, the second is with a protruding over the threaded portion, substantially provided along the threaded axis extending pin. These special attachments can be used in particular to create two plate or connecting strut-shaped elements with each other. It is in one of the elements in a hole with a blind hole trained attachment screwed into a bore of the second Elementes is screwed a provided with the pin element. The pin and the blind hole are designed so that they fit into each other preferably their diameters are up to a required one Game essentially identical. These attachments can so in particular for bonding two inventive strassen- or plate-shaped elements are used by in the blind hole an adhesive, z. As an epoxy adhesive, filled and the pin of the further attachment then in this blind hole is introduced. So stuck the pin with his Outside surfaces inside the blind hole and leads to a firm connection. It is particularly beneficial if the blind hole or the pin, but especially both of these Elements as specified in claims 7 and 10, respectively or with increasing diameter, in each case conical Extensions are preferred in particular with those in the claims 7 or 10 indicated angle ranges of the cone angle of 3 ° to 10 °, in particular 6 °.

When gluing the said elements The expansion, in particular conicity, leads to an improved hold, since forces exerted in the direction of the thread axes and thus in the direction of the longitudinal extension of the pin or of the blind hole are better retained by the material projection in the blind hole surrounded and retained by the adhesive the pin.

Out The above comments are immediately the Advantages and features of the system according to the invention and one with the plate or strut-shaped elements formed device for Clamping of workpieces.

Further Features and advantages of the invention will become apparent from the following Description of embodiments with reference to the accompanying figures. Showing:

1 in a side view an embodiment of a strut element according to the invention with guided on all four longitudinal sides in the longitudinal direction T-slots and two holes introduced therein in a grid spacing therein;

2 a three-dimensional isometric view of the strut element 1 ;

3 a plan view of an end face of the strut element 1 ;

4 an embodiment of a plate member according to the invention with on the main surfaces parallel to each other out two T-slots at a distance of the grid and in the T-slots introduced, also spaced in the grid holes;

5 a view of the plate element 4 from the front side;

6a and b in a side view and a plan view of an inventive attachment with integrally formed connecting pin; and

7 in a sectional side view and a plan view of another inventive attachment with a blind hole for receiving a connecting pin of the in the 6a and b shown attachment.

In The figures are in schematic and not to scale Illustrations that merely serve to explain embodiment represented the invention. Same elements and structures are while provided with the same reference numerals.

In the 1 - 3 a strut element according to the invention is shown in a side view, a three-dimensional view and a view on an end face and generally with the reference numeral 1 characterized. This strut element is cuboidal and has on its elongated side surfaces each extending in the longitudinal direction, centered on the strut element 1 guided T-slot 2 on. In the T-slot 2 are in this embodiment, two circular holes 3 guided whose diameter substantially correspond to the maximum width of the T-slot. Here are the holes 3 especially in the protruding areas 4 introduced the T-slot 2 cover on its near-surface side and the access opening of the T-slot 2 rejuvenate there, and have removed there material. In which the hole 3 limiting section 5 of the projecting portion (not shown in detail in the figures) are threaded threads which are threaded with a perpendicular to the surface of the strut element 1 form directed thread axis.

By this configuration attachments can with the threads in the bore 3 limiting sections 5 Screwed corresponding threaded portions and are set in a simple manner in the grid spacing.

Another example of an inventive element for building up devices for clamping workpieces is in the 4 and 5 shown. Here is a plate element 6 shown on its opposite main surfaces 7 two each, arranged parallel to one another and in the longitudinal direction of the plate element 6 running T-slots 2 having. The two T-slots are with their centerlines 8th spaced apart by the pitch A, which also around the holes introduced in the T-grooves in the manner described above 3 with their centers 9 spaced apart. The holes 3 are also formed here in the same way and have the same diameter as in the example of the above with reference to the 1 - 3 described strut element 1 , Again, in essential to the invention, the sections 5 in which the hole through the protruding area 4 are guided, provided with an internal thread for fixing attachments. In 4 is indicated on the left in dashed line the maximum width of the T-slot.

As in 5 can be seen, are at the plate element 6 not only on the main surfaces 7 T-grooves 2 arranged but also on the side surfaces 10 , but there only one T-slot each 2 , Not visible in the figure are also in the T-slots 2 on the side surfaces 10 drilling 3 arranged in pitch A and provided in the manner according to the invention with thread pulls.

In the 6a , Federation 7a , B are two embodiments of attachments shown for screwing into the holes provided with the threads 3 are provided and suitable.

In the 6a and b is a pin member 11 , in the 7a and b a female member 12 shown. Both elements have a substantially identical threaded portion 13 which is essentially disc-shaped and lens-shaped and in the area with the largest diam with an external thread 14 is provided. Still belonging to the threaded section is an extension 15 that both the pin element 11 as well as the socket element 12 equally. This extension 15 is in its cross-sectional profile of the profile of the T-slot in the strut element 1 or the plate element 6 simulated.

On the extension 15 opposite side is at the pin member 11 to the threaded section 13 a cone 16 formed with its longitudinal direction in the direction of the threaded axis 17 of external thread 14 runs. This pin 16 extends conically with a starting from the threaded portion towards the free end of the pin 16 expanding diameter. At the extreme end of the pin 16 is a section in which a chamfer running counter to the conical enlargement 18 is arranged.

The pin element 11 can with the extension 15 ahead in a hole 3 in one of the T-slots 2 used and with the external thread 14 in that in the sections 5 drilling 3 introduced internal threads are screwed.

In the same way, the socket element 12 with the section 15 ahead into a hole in a T-slot 2 used and with the external thread 14 into the internal thread in the sections 5 be screwed. The socket element 12 points into the interior of the extension 15 in blind hole 19 on, which towards the bottom, so in the direction of the free end of the extension 15 conically flared runs. The conical extension of the blind hole 19 corresponds in its cone angle α, which is here 6 °, the cone angle of the pin 16 ,

For easy screwing in the pin element 11 or socket element 12 into the hole 3 or for releasing these elements they can in the usual way with a slot 20 be engaged in with a tool, such as a conventional screwdriver, intervene and this element can be twisted.

From the synopsis between the 6a and 7a is easily and easily recognized that the pin element 11 with his spigot 16 in the blind hole 19 of the socket element 12 can be introduced, with the chamfer 18 for easier insertion. This possibility of connection between the pin member 11 and the socket element 12 serves the simple connection of two provided with in accordance with the invention threaded holes 3 equipped T-slots 2 formed elements, of which in at least one pin member 11 and in the other at least one socket element 12 screwed in and fixed. The blind hole 19 can namely with an adhesive, z. B. an epoxy adhesive and then the pin 16 into the subject hole 19 be pressed. The adhesive is the bottom of the blind hole and from there to the pin 16 urged past. Due to the conical design of blind hole 19 and cones 16 it is ensured that in the adhesive connection no air remains and the adhesive reliable everywhere a firm connection between the surfaces of the blind hole 19 and the pin 16 forms. As a result, both in the pin element 11 as well as the socket element 12 the widest diameter in the area of the external thread 14 is designed and the height of the elements taken from the extreme end of the extension 15 up to this end opposite top edge of the external thread 14 in about the depth of the hole 3 or the T-slot 2 In this range, the elements can pin element 11 or socket element 12 be screwed into their respective holes so that they are flush with the surface of the respective element. Thus, a play-free connection between two elements by gluing by means of the elements socket element 12 and pin member 11 be created. For a secure connection can of course to the strut elements involved 1 or plate elements 6 in several holes in pairs pin elements 11 and socket element 12 be introduced and joined together during bonding.

From the above description, it should be readily apparent that the elements are pin members 11 and socket element 12 appropriate elements can be used as well, in which instead of to be bonded conical or cylindrical pin 16 and blind hole 19 a mating pin and a fitting bore can be arranged, which cause a positive connection. These can also be formed by appropriate design so that they specify an orientation of the connection with respect to the rotational position about the longitudinal axis of the pin or more distinct positions.

Of course, as attachments further elements are conceivable with other configurations than the pin member shown here 11 and bushel ment 12 , So can with a threaded section accordingly 13 , preferably with extension 15 , Attached attachments also terminals, support pins, toggle or the like wear.

From the above description of the figures it has once again become clear what clear advantage the invention entails, in particular with regard to a simple construction of devices for clamping workpieces that are bored through 3 internally threaded T-slots 2 combine the advantages of a grid with the advantages of a free displacement of attachments along the longitudinal direction of the T-grooves in it.

1

strut element

2

T-slot

3

drilling

4

protruding Area

5

section

6

panel member

7

main surface

8th

center line

9

Focus

10

side surface

11

pin element

12

female member

13

threaded portion

14

external thread

15

renewal

16

spigot

17

threaded shaft

18

chamfer

19

blind

20

slot

α

cone angle

A

Pitch

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 1621283 A1 [0005]
• - EP 1645756 A1 [0005, 0006]
• - EP 1621283 [0006]

Claims (12)

Plate or strippenförmiges element for the construction of devices for clamping workpieces with at least one on at least one surface preferably edge-parallel arranged T-groove ( 2 ) and in the T-slot ( 2 ) with their centers ( 9 ) arranged at a spacing (A) defining regular intervals, on the longitudinal axis of the T-slot ( 2 ) lying circular holes ( 3 ), characterized in that at least one, preferably all of the bores ( 3 ) at its edge ( 5 ) is provided with an internal thread or are. Plate or strut-shaped element according to claim 1, characterized in that the diameter of the holes ( 3 ) substantially the maximum width of the T-slot ( 2 ), this exceeds in particular by a small amount Plate or strut-shaped element according to one of the preceding claims, characterized in that along at least one of its surfaces at least two with bores ( 3 ) provided T-slots ( 2 ) are arranged parallel to each other, wherein the distance of the central axes ( 8th ) of the T-slots ( 2 ) equal to the pitch (A) of the distance of the centers ( 9 ) of the holes ( 3 ). Attachment for connection to a plate or strut-shaped element according to one of the preceding claims, characterized in that it has at least one outer diameter of the inner diameter of the holes ( 3 ) in the T-slot ( 2 ) of the plate or strut-shaped element ( 1 . 6 ) corresponding threaded portion ( 13 ) with an external thread ( 14 ), which for screwing with the internal thread at the edge ( 5 ) of the bore ( 3 ) is designed. An attachment according to claim 4, characterized in that it is in a T-slot ( 2 ) of the plate or strut-shaped element ( 1 . 6 ) area to be screwed ( 15 ) of the threaded portion ( 13 ) to the shape of the bottom of the T-slot ( 2 ) has adapted profile. Attachment according to one of claims 4 or 5, characterized in that it is substantially disc-shaped or lens-shaped and its largest diameter in the region of the external thread ( 14 ) and that there is a substantially along the threaded axis ( 17 ) extending blind hole ( 19 ) having. Attachment according to claim 6, characterized in that the blind hole ( 19 ) is widened toward the bottom, in particular flared, in particular with a cone angle (α) of preferably 3 ° to 10 °, preferably 6 °. Attachment according to one of claims 4 or 5, characterized in that it has a substantially disc-shaped or lenticular base whose largest diameter in the region of the external thread ( 14 ), with an integrally formed on the base, of this substantially along the threaded axis ( 17 ) projecting pin ( 16 ). Attachment according to claim 8, characterized in that the pin ( 16 ) has, starting from the base to its free end an increasing diameter, in particular conically extending with a cone angle of preferably 3 ° to 10 °, in particular 6 °. System for constructing devices for clamping workpieces with at least one plate or strut-shaped element ( 1 . 6 ) according to one of claims 1 to 3 and at least one attachment ( 11 . 12 ) according to one of claims 4 to 9. Device for clamping workpieces, characterized in that these consist of plate-shaped or strut-shaped elements ( 1 . 6 ) is formed according to one of claims 1 to 3. Device according to claim 11, characterized in that at least two plate-like or strut-shaped elements ( 1 . 6 ) at least one attachment ( 12 ) according to claims 6 or 7 and an attachment ( 11 ) according to claims 8 or 9 in corresponding holes ( 3 ) are screwed in and that the two plate-like or striven-shaped elements ( 1 . 6 ) by inserting the pin ( 16 ) of the one attachment ( 11 ) according to one of claims 8 or 9 in the blind hole ( 19 ) of the attachment ( 12 ) according to one of claims 6 or 7 and positive pressing and / or gluing the pin ( 16 ) in the blind hole ( 19 ) are interconnected.