DEVICE FOR SECURING A DATA CARRIER TO A TOOL HOLDER, TOOL HOLDER AND TOOL SYSTEM

Abstract

A device for securing a data carrier to a tool holder is disclosed. In order to allow the data carrier to be easily secured to the tool holder in a reliable and permanent manner, the device includes a sleeve-shaped main body which has, at a first end, at least one projection projecting radially inwards and has, in the region of a second end opposite the first end, at least one projection projecting radially outwards.

Claims

1. A device for securing a data carrier to a tool holder, wherein the device includes a sleeve-shaped main body, which has at least one radially inwardly projecting projection on a first end and at least one radially outwardly projecting projection in the area of a second end opposite the first end.

2. The device of claim 1, wherein the at least one radially inwardly projecting projection is formed by a radially inwardly projecting peripheral annular ridge.

3. The device of claim 1, wherein the at least one radially outwardly projecting projection is designed to be elastically movable in the a radial direction.

4. The device of claim 1, wherein the at least one radially outwardly projecting projection comprises a plurality of radially outwardly projecting projections spaced apart from each other in the peripheral direction provided in the region of the second end of the sleeve-shaped main body.

5. The device of claim 4, wherein each radially outwardly projecting projection is formed by a radially outwardly projecting ridge running in the peripheral direction.

6. The device of claim 1, wherein slits are provided in the sleeve-shaped main body in the peripheral direction between the radially outwardly projecting projections.

7. The device of claim 6, wherein the slits extend in the direction of the first end of the sleeve-shaped main body starting from the second end of the sleeve-shaped main body.

8. A tool holder with a receptacle for a data carrier, in which the receptacle is formed by an outwardly open recess in the tool holder, wherein the recess has a notch extending laterally in the tool holder, which is preferably positioned close to, and with particular preference adjacent to, a second end facing away from the open first end.

9. The tool holder of claim 8, wherein the recess is formed as a hole.

10. The tool holder of claim 8, wherein the notch extending laterally in the tool holder is designed as an annular groove.

11. A tool system comprising a tool holder (2), a data carrier (3) and a device (4) for securing a data carrier (3) to the tool holder (2), wherein the tool holder includes a receptacle for the data carrier, in which the receptacle is formed by an outwardly open recess in the tool holder, the recess having a notch extending laterally in the tool holder, which is preferably positioned close to, and with particular preference adjacent to, a second end facing away from the open first end; and the device includes a sleeve-shaped main body, which has at least one radially inwardly projecting projection on a first end and at least one radially outwardly projecting projection in the area of a second end opposite the first end.

12. The tool system of claim 11, wherein a spacer element is provided, which is arranged between the second end of recess in the tool holder and the data carrier.

13. The tool system of claim 12, wherein the spacer element includes an elastic plastic element.

14. The tool system of claim 12, wherein the spacer element is designed as an O-ring.

Description

[0019] Additional details and advantages of the invention are apparent from the following description of preferred embodiment example with reference to the drawings. In the drawings:

[0020] FIG. 1 shows a perspective view of a tool system comprising a tool holder, a data carrier as well as a device for securing a data carrier on the tool holder;

[0021] FIG. 2 shows a longitudinal section through the tool system of FIG. 1;

[0022] FIG. 3 shows a detail view of area X of FIG. 2;

[0023] FIG. 4 shows a perspective view of the device for securing a data carrier;

[0024] FIG. 5 shows another perspective view of the device for securing a data carrier and

[0025] FIG. 6 shows a perspective view of the assembly sequence of the tool system of FIG. 1.

[0026] A perspective view of a tool system 1 comprising a partially depicted tool holder 2, data carrier 3 and a device 4 for securing the data carrier 3 to the tool holder 2 is shown in FIG. 1. The tool holder 2 is designed, for example, as a hollow shank taper and has a receptacle for the data carrier 3, which is formed by an outward open recess 5 and is configured as a hole. The data carrier 3 is held in recess 5 by means of device 4 in positive-locking fashion, as further explained with reference to the following figures. It should be noted that the tool holder 2 is only depicted schematically, the fastening section for a tool not being specifically shown.

[0027] A longitudinal section through the tool system 1 of FIG. 1 is shown in FIG. 2. As can be deduced from FIG. 2, the recess 5 in the tool holder 2 is arranged between a taper shank 7 and a gripper groove 8 for the automatic tool change, especially between a flat surface 9 and the gripper groove 8. This ensures that the data carrier 3 can be read out in the recess 5 at any time, especially when a tool holder 2 is also mounted in a machine spindle (not shown).

[0028] The tool holder 2 can also have a shrink-fit chuck or a collet chuck on the right side (not further detailed) with which a tool can be engaged. The described features of the tool holder 2 are universally employable to this extent for all known tool holders.

[0029] FIG. 3 shows a detail view of area X of tool holder 2 of FIG. 2. The area of recess 5 in the tool holder 2 is shown in the detail view, in which the data carrier as well as the device 4 for securing the data carrier 3 are arranged. The recess 5 has an outwardly open end 10 and a second end 11 facing away from the open end 10, which forms the bottom of recess 5. In the area of the second end 11, the recess 5 has a notch 12 extending laterally in the tool holder 2, which is designed as an annular groove. In the area of the first end 10, the recess 5 also has an entry chamfer 13 in order to facilitate installation of the device 4, described in detail below.

[0030] The device 4 for securing the data carrier 3 on the tool holder 2 has a sleeve-shaped main body 14, which has a radially inwardly projecting projection 16 designed as a peripheral annular ridge on a first end 15. The sleeve-shaped main body 14 has an inside diameter corresponding to the outside diameter of the data carrier 3, so that the data carrier 3 can be guided in positive-locking fashion into the sleeve-shaped main body 14. The radially inwardly projecting projection 16 on the first end 15 of the sleeve-shaped main body 14 forms a stop for the data carrier 3.

[0031] On a second end 17 opposite the first end 15, the sleeve-shaped main body 14 has several radially outwardly projecting projections 18 that engage as hook-like elements in the notch 12 in recess 5 of the tool holder 2.

[0032] A spacer element 19 is also provided between the data carrier 3 and the second end 11 of recess 5, i.e., the bottom of recess 5, which is designed preferably as an elastic plastic element and acts on the data carrier 3 in the direction of the radially inwardly projecting projection 16. The data carrier is thereby reliably held in a position close to the first end of recess 10, i.e., the outside of the tool holder 2. The spacer element 19, however, can also be designed as an O-ring, for example, from an elastic material, like rubber.

[0033] The device 4 in FIG. 4 for securing a data carrier is shown in a first perspective view on the second end 17. As can be deduced from FIG. 4, several radially outwardly projecting projections 18 distributed uniformly in the peripheral direction are provided in the area of the second end 17 of the sleeve-shaped main body 14, each of which are formed by a radially outwardly projecting ridge running in the peripheral direction.

[0034] Slits 20 are provided in the sleeve-shaped main body 14 in the peripheral direction between the radially outwardly projecting projections 18. The slits 20 then extend in the direction of the first end 15 of the sleeve-shaped main body 14 starting from the second end 17 of the sleeve-shaped main body 14. The slits 20 then each form a pocket opened toward the second end 17 of the sleeve-shaped main body 14. The elastic radial mobility of the radially outwardly projecting projections 18 on the second end 17 of the sleeve-shaped main body 14 are influenced by the slits 20. Depending on the choice of material for device 4 and the geometry of device 4, especially the wall thickness of the sleeve-shaped main body 14, the radial elasticity of the radially outwardly projecting projections 18 can be adjusted by means of the length and also width of the slits 20.

[0035] The device 4 for securing a data carrier 3 is shown in FIG. 5 in a second perspective view on the first end 15. As can be deduced from FIG. 5, the radially inwardly projecting projection 16 is designed as a peripheral annular ridge on the first end of the sleeve-shaped main body 14. Otherwise, the sleeve-shaped main body 14 has a cylindrical external contour, beyond which only the projections 18 project radially outwards on the second end of the sleeve-shaped main body 14.

[0036] A perspective view of the assembly sequence of the tool system 1 of FIG. 1 is shown in FIG. 6. Rapid assembly is achieved in that the data carrier 3 is first inserted into device 4. The spacer element 19 can already be pre-mounted on the data carrier 3 or mounted in a subsequent step. Since the connection between the data carrier 3 and the spacer element 19 is only relevant for assembly, simple gluing methods are suitable for this purpose. In the subsequent assembly step, the device with the data carrier and the spacer element, which can be prefabricated particularly well in this assembly are inserted into the recess 5 in the tool holder 2.

[0037] The inside diameter of the recess 5 essentially corresponds to the outside diameter of the sleeve-shaped main body 14 of device 4 plus the usual assembly play. During insertion of device 4 into recess 5, the radially outwardly projecting projections 18 on the sleeve-shaped main body 14 are elastically deformed radially inwards due to the larger outside diameter relative to the inside diameter of recess 5, supported by the entry chamfer 13. If the device 4 is fully inserted into recess 5, the projections 18 spring radially outwardly into the notch 12 and recess 5 and engage behind it. The holding force of the device 4 can be simply influenced due to the formation of slit 20, the wall thickness of the sleeve-shaped main body 14, the material choice, and the choice of outside diameter with radially outwardly projecting projections 18.

LIST OF REFERENCE NUMBERS

[0038] 1 Tool system

[0039] 2 Tool holder

[0040] 3 Data carrier

[0041] 4 Device for securing of the data carrier

[0042] 5 Receptacle/recess in the tool holder

[0043] 6 Locking device

[0044] 7 Taper shank

[0045] 8 Gripper groove

[0046] 9 Flat surface

[0047] 10 First end of the recess

[0048] 11 Second end of the recess

[0049] 12 Notch in the recess

[0050] 13 Entry chamfer

[0051] 14 Sleeve-shaped main body

[0052] 15 First end of the sleeve-shaped main body

[0053] 16 Projection projecting radially inwards

[0054] 17 Second end of sleeve-shaped main body

[0055] 18 Projection projecting radially outwards

[0056] 19 Spacer element

[0057] 20 Slit