DE19856588B4 - Clamping device for machines for the reproduction of keys - Google Patents

Abstract

jig for machines for the reproduction of keys, where both the original key as well as the edited Key blank between fixed and movable press edges is clamped, characterized in that the tensioning device a movable part (1), which between a first (2) and a second (3) fixed part is arranged, that the movable part (1) perpendicular to its direction of movement opposite first (4) and second (5) pressed edges has, in the direction of movement respectively respective third (6) and fourth (7) press edges a respective fixed part (2, 3) oppose that the first (4) and second (5) press edges are provided with respective clamping profiles that are different from each other are, and the operationally reciprocal are formed to other clamping profiles in the respective opposite third (6) and fourth (7) press edges are formed, and that the movable part is screwed onto a threaded spindle (8), the extending between the first and second fixed parts (2, 3).

Description

The The invention relates to a clamping device in the preamble of the patent claim 1 mentioned type.

These Clamping device is especially for reproduction or duplication of keys suitable as a flat key are known, and have a shallow shaft, the lock secret fundamental in the flat surfaces of the key is formed, in contrast to known keys, which has an edge toothing Although also having a flat shaft, wherein however the basic castle secrecy is formed in the edge of the shaft. In the same way the novel clamping device advantageously applicable to keys with shanks, have the cross sections, which are not flat and a more complicated Editing for the castle secret require (for example, with a circular hollow cross-section, with a double-T shaped Cross section, a polygonal cross section, etc.).

Usually are machines for the reproduction of keys with a set of two clamping devices equipped, one of which is for clamping the original key, which copies or reproduces should be, and the other for clamping a key blank serves, in which the castle secrecy of the original key should be incorporated. Accordingly, the aim of the invention both on one and the other of these fixtures of the machines applicable.

The already mentioned key with serrations show a high degree of standardization and do not cause any problems with the existing constructions of machines for the reproduction of keys.

If however, the mentioned keys with flat shaft, in which the lock secret formed in the flat surfaces is (flat key) or key with hollow circular Shank, with double T-shaped Cross section, etc. to be reproduced, so this requires a size Versatility of existing configurations (rarely standardized are), so that the existing reproduction machines through a set of different fixtures feature have to, of which the corresponding ones respectively according to the configuration of the key to be reproduced must be installed. In this case, each clamping device consists of two individual parts, one of which is flexible and the other solid, between them the corresponding key (Original key or Blank) two transverse clamping edges of the parts must be clamped, pressed against each other and for this purpose with different profiles according to the shank of the to be reproduced key are provided.

Out On the one hand, this implies the necessity of having one Set of clamping devices for the different types of keys to be reproduced. On the other hand, a substitute for a kind of tensioning device is through another is required each time when the one to be reproduced key not compatible with the jig at this time is installed in the machine.

From the DE-85 06 063 U1 a clamping device of key cutting machines for key blanks is known which has two clamping jaws which are mounted pivotably about mutually parallel pivot axes on a base body and by means of a clamping screw against an abutment disposed between the clamping jaws tensioned. The clamping jaws are designed for clampingly gripping and clamping a blank against correspondingly shaped abutment regions of the abutment, so that an edge arranged on the narrow side of the key blank can be machined. A processing of the broad side of the key blank is not provided hiebei.

Of the Invention is based on the object, a novel design to create the clamping device, both a simple construction as well as having an advantageous application.

These The object is achieved by the features specified in claim 1 solved.

advantageous Embodiment and developments of the invention will become apparent the dependent claims.

The Inventive clamping device is formed by a moving part fixed between two Share, namely a first and a second part is arranged, wherein this movable part perpendicular to its direction of movement two opposite pressing edges, namely a first and a second pressing edge having, in this direction of movement respectively respective third and fourth press edges opposed, wherein the first and second press edges are provided with respective press-profile shapes which are different from each other and which are operationally reciprocal to other Preßprofilformen that are in the corresponding opposite third and fourth pressing edges are formed, wherein the movable member to a threaded spindle is screwed, which is fixed between the first and second Parts stretches.

By This novel design of the clamping device combines these two clamping devices, because the movable part with the one or the other of the fixed parts can interact, the are provided in each of the novel tensioning devices.

According to the invention the movable part points on its two transverse sides respective pressed edges each having a different shape corresponding to the pressing edge of opposite have fixed part, which leads to the significant advantage that a machine for the reproduction of keys, which is provided with the new jigs, automatically one by half reduced number of clamping devices or interchangeable jaws needed compared to known machines.

From this there is a significant saving in material costs for the components, which have a high price. Furthermore, the work processes to Replacement of the clamping devices saved, which in addition to the time savings results in a much more comfortable handling and better services for allows the customer.

One Another advantage of the invention is that a very simple construction that results with usual Machines for the reproduction of keys is compatible, so that in these conventional machines the existing jigs by the jigs replaced according to the invention can be.

The Invention will be described below with reference to the drawing embodiments even closer explained.

In show the drawing:

1 a key reproduction machine provided with tensioning devices according to the invention as viewed from the front side,

2 an enlarged view of the circle II in 1 surrounded detail, next to a partial magnification is shown, which corresponds to one of the tensioning devices,

3 and 5 a top view of one of the clamping devices according to the invention with two different flat keys, a first ( 11 ) and a second ( 12 ) between the moving part 1 and the first fixed part ( 2 ) are arranged

4 and 6 corresponding front views of the clamping devices according to the 3 and 5 in which the section of the plane shank of the respective first ( 11 ) and second ( 12 ) Flat key is shown

7 and 9 the 3 and 5 corresponding views in which a hollow key ( 13 ) and a double T-shaped key ( 14 ) in each case between the movable part ( 1 ) and the second fixed part ( 3 ) are trapped,

8th and 10 the 4 and 6 corresponding front views, but on the 7 respectively. 9 Respectively,

11 a side view showing the double T-shaped key ( 14 ) to 9 equivalent.

In the drawings, an embodiment of the novel clamping device for machines for reproducing or duplicating keys in 1 shown specifically for flat keys 11 . 12 ( 3 to 6 ) and is intended for keys with special shanks, such as hollow wrench 13 ( 7 and 8th ), Key with double T-shaped cross section 14 ( 9 to 11 ) and other.

According to the invention, the novel concept of the clamping device is that at each working position of the machine (one for the original key and the other for the raw key), a type of double-clamping device is provided by a movable part 1 is formed between two fixed parts, namely a first part 2 and a second part 3 is arranged. The moving part 1 has perpendicular to its direction of rotation oppositely directed pressing edges, namely a first pressing edge 4 and a second pressing edge 5 in each case in this movement direction respective third ( 6 ) or fourth ( 7 ) Press edges of the fixed parts 2 . 3 can be contrasted with the first and second pressing edges 4 . 5 are provided with respective Preßprofilformen, which are different from each other, and which are operationally reciprocal to the other Preßprofilformen that in the corresponding opposite of the third ( 6 ) and fourth pressing edges are arranged, wherein the movable part 1 on a threaded spindle 8th screwed on, extending between the first and second fixed parts 2 . 3 extends.

According to the invention, it is further provided that in one of the two third ( 6 ) and fourth ( 7 ) Press edges of the first ( 2 ) or second ( 3 ) fixed part an angular notch ( 9 ) formed with the corresponding opposite first ( 4 ) or second ( 5 ) Pressing edge of the movable part ( 1 ), which is in an intermediate position of its operating trajectory. Here, the edge surfaces of the notch ( 9 ) and the corresponding pressing edge ( 4 ) respectively. ( 5 ) Three tangential planes forming a circle with a diameter equal to the circumference of a hollow key 13 rewrite. The angular notch 9 may be in its tip by a bisecting groove 10 be continued, which is in the direction of movement of the moving part 1 extends and which is dimensioned in terms of their depth and width corresponding to a radial wing, the hollow key 13 for guided insertion into the lock.

Furthermore, for example, the pressing edges ( 5 ) and ( 7 ) have a profile such that they clamp the shank of a key ( 14 ) with double T-shaped shaft, as in the 9 and 10 is shown.

Appropriate Preßkantenprofile can additionally do that Clamping other special forms of shanks of keys allow, with appropriate Combinations of recesses and / or projections in each case with each other cooperating press edges the movable part and one of the fixed parts are provided. each pressing edge can in this case several, adapted to different Liche key types, Preßflächenteile exhibit.

This novel concept of the jig results in a great versatility of application, for the examples in the 3 to 10 are indicated, which can be seen as the moving part 1 with the first fixed part 2 cooperates ( 3 to 6 ) with first ( 11 ) and second ( 12 ) To cooperate with types of flat keys or cooperate with the second fixed part to 7 to 10 ) with a hollow key 13 or with a double T-shaped key ( 14 ) according to 11 co. This results in the already described advantages of at least halving the stock of different jigs for each machine and replacing the jigs, thereby making work more convenient and better serving the customer.

In The following reference numerals are used in these figures:

1

Portable part

2

first solid part

3

second solid part

4

first pressing edge

5

second pressing edge

6

third pressing edge

7

fourth pressing edge

8th

screw

9

angled score

10

bisecting groove

11

first flat key

12

second flat key

13

hollow key

14

Double T-shaped key

Claims (5)

Clamping device for machines for the reproduction of keys, in which both the original key and the key blank to be machined are clamped between fixed and movable press edges, characterized in that the clamping device has a movable part ( 1 ) between a first ( 2 ) and a second ( 3 ) fixed part is arranged, that the movable part ( 1 ) perpendicular to its direction of movement opposite first ( 4 ) and second ( 5 ) Has pressing edges, which in the direction of movement respectively respective third ( 6 ) and fourth ( 7 ) Pressing edges of a respective fixed part ( 2 . 3 ) that the first ( 4 ) and second ( 5 ) Are provided with respective clamping profiles, which are different from each other, and which are operatively reciprocally formed to other clamping profiles, which in the respective opposite third ( 6 ) or fourth ( 7 ) Preßkanten are formed, and that the movable part on a threaded spindle ( 8th ) screwed between the first and second fixed parts ( 2 . 3 ). Clamping device according to claim 1, characterized in that in one of the third and fourth pressing edges of the first and second fixed parts ( 2 . 3 ) an angular notch ( 9 ) is formed, which with a corresponding opposite first and second Preßkante ( 4 . 5 ) of the movable part ( 1 ) cooperates in an intermediate position of the working stroke of the movable part and forms with this three tangential planes forming a circle with a diameter equal to the circumference of a hollow key ( 13 ). Clamping device according to claim 2, characterized in that the angular notch ( 9 ) at its apex by a middle bisecting groove ( 10 ) extending in the direction of movement of the movable part ( 1 ) and whose depth and width are adapted to a radial wing which is fixed to the hollow key ( 13 ) is designed to guide the insertion of the hollow key in the lock. Clamping device according to claim 1, characterized in that the key ( 11 . 12 ) is a flat key with a flat shaft, the lock secret is cut substantially in the flat side surfaces of the shaft. Clamping device according to claim 1, characterized in that the key ( 14 ) is a key with a double T-shaped shank.