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 tool system comprising: a tool holder, a data carrier, and a device for securing the data carrier to the tool holder, 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, the notch positioned near a second end of the recess facing away from an open first end of the recess; wherein the tool holder further includes a taper shank for being held by a machining spindle; wherein the device includes a sleeve-shaped main body with open first and second ends, at least one radially inwardly projecting projection on the first end of the body extending toward a longitudinal axis of the main body, and a plurality of radially outwardly projecting projections in the area of the second end of the body opposite the first end of the body extending away from the longitudinal axis of the main body, wherein the main body has an inner dimension corresponding to an outer dimension of the data carrier such that the data carrier is holdable in the main body with the at least one radially inwardly projecting projection maintaining the data carrier in the main body, wherein a spacer element is arranged between the second end of the recess in the tool holder and the data carrier, the spacer element configured and dimensioned to maintain the data carrier in contact with the at least one radially inwardly projecting projection, and wherein slits are provided in the sleeve-shaped main body in a peripheral direction between the plurality of radially outwardly projecting projections with the slits extending through the main body from an outer surface of the main body to an inner surface of the main body, such that as the main body is inserted in the recess, the plurality of radially outwardly projecting projections flex toward the longitudinal axis of the main body and flex outward as the second end of the main body reaches the second end of the recess so that the plurality of radially outwardly projecting projections flex away from the longitudinal axis of the main body to hook into the notch.

2. The tool system of claim 1, wherein the at least one radially inwardly projecting projection of the main body is formed by a radially inwardly projecting peripheral annular ridge extending toward the longitudinal axis of the main body.

3. The tool system of claim 1, wherein the plurality of radially outwardly projecting projections of the main body are designed to be elastically movable in a radial direction with respect to the longitudinal axis of the main body.

4. The tool system of claim 1, wherein the plurality of radially outwardly projecting projections are spaced apart from each other.

5. The tool system of claim 4, wherein each of the plurality of radially outwardly projecting projections is formed by a radially outwardly projecting ridge running in a peripheral direction with respect to the longitudinal axis of the main body.

6. The tool system of claim 1, wherein the recess is formed as a hole.

7. The tool system of claim 1, wherein the notch, which extends laterally in the tool holder, is designed as an annular groove.

8. The tool system of claim 1, wherein the spacer element is an elastic plastic element.

9. The tool system of claim 1, wherein the spacer element is designed as an O-ring.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) 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:

(2) 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;

(3) FIG. 2 shows a longitudinal section through the tool system of FIG. 1;

(4) FIG. 3 shows a detail view of area X of FIG. 2;

(5) FIG. 4 shows a perspective view of the device for securing a data carrier;

(6) FIG. 5 shows another perspective view of the device for securing a data carrier and

(7) FIG. 6 shows a perspective view of the assembly sequence of the tool system of FIG. 1.

DETAILED DESCRIPTION OF THE INVENTION

(8) 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.

(9) 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).

(10) 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.

(11) 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.

(12) 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.

(13) 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.

(14) 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.

(15) 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.

(16) 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.

(17) 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.

(18) 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.

(19) 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

(20) 1 Tool system

(21) 2 Tool holder

(22) 3 Data carrier

(23) 4 Device for securing of the data carrier

(24) 5 Receptacle/recess in the tool holder

(25) 6 Locking device

(26) 7 Taper shank

(27) 8 Gripper groove

(28) 9 Flat surface

(29) 10 First end of the recess

(30) 11 Second end of the recess

(31) 12 Notch in the recess

(32) 13 Entry chamfer

(33) 14 Sleeve-shaped main body

(34) 15 First end of the sleeve-shaped main body

(35) 16 Projection projecting radially inwards

(36) 17 Second end of sleeve-shaped main body

(37) 18 Projection projecting radially outwards

(38) 19 Spacer element

(39) 20 Slit