DE8123372U1 - DEBURRING TOOL - Google Patents

Description

- 3 -

description

The present invention relates to a tool for deburring bore edges and the like. After Preamble of claim 1.

In such a tool, the metallic rods covered with diamond particles have any cross-section may have, but are preferably square, held bulged under bias and in the direction of the Long axis slightly twisted. In this way, the metallic rods are characterized by their diamond particle coverage manage the deburring, in the radial direction, depending on their axial length and the preload more or less resilient. One such tool

j can not only be used for deburring the edges of holes,

but also used to process weld seams

J will be. For different bore diameters, respectively

j different individual tools are used, due to

j the resilient resilience of the rods, although holes

! certain diameter ranges can be machined, which

j areas, however, for diameters up to 15 mm only

r make up about 5% of the maximum diameter.

The object of the invention is to provide a tool for deburring bore edges and the like. Of the type mentioned to create, with which the edges of holes with very different diameters can be deburred without changing tools can.

This task is performed in a tool for deburring the edges of holes and the like. Of the type mentioned solved by the features specified in the characterizing part of claim 1.

In the deburring tool according to the invention, the one ends of the metallic rods moved back or forth in the axial direction, whereby the bulbous bend enlarge or reduce the rods in the radial direction so that they have holes of more or less larger diameters can be customized. This can also improve the quality of the deburring of the bore edges. Outgoing of a certain mean preload at a set mean diameter, this also means that reducing the diameter increases the elasticity of the rods and, conversely, increases the Diameter leads to a reduction in the flexibility of the rods.

In exemplary embodiments of the present invention, either the end of the tool shank facing away from the clamping end is front end or the rear end of the metal rods facing the clamping end of the tool shaft is adjustable held on the tool shaft. It is useful if the ring element holding the ends of the metallic rods is guided in the axial direction on the tool shank and when it comes to a thread adjustment element under the action of the metal rods held in a bulky manner under pretension creates, which is screwed onto the relevant end of the tool shaft. That way is a very easy and quick adjustment of the diameter of the deburring tool possible.

If the ring element in front of the clamping end of the tool shank is adjustable, it is expedient to do so to be countered by a lock nut. The adjustment is then made by hand before a machining process. If, on the other hand, the rear ring element facing the clamping end of the tool shank is in the axial direction and adjustable, then it is expedient to design the thread adjusting element as an internally threaded sleeve and to attach it to provide its free end with means that allow automatic adjustment from a prime mover enable. For example, the means can be reached through a screwdriver slot or an external hexagon will. A corresponding setting tool to be connected to this means can be rotated relative to one another enable such an adjustment to the tool shank and can also fix the adjusted position at the same time. This enables automatic readjustment or adjustment of the diameter of the deburring tool during machining possible. This can be advantageous, for example, in bores with very large burrs left on the edges.

* · To further increase the effectiveness of such

ί Deburring tool is also provided, the front end

to connect the tool shaft with a brush tool part. This combination with an appropriate brush has the advantage that on the one hand large burrs can be removed and that on the other hand because of the brush a better surface quality is achieved.

Further details and embodiments of the invention can be found in the following description, in which the Invention is described and explained in more detail with reference to the embodiments shown in the drawing. They represent:

Figure 1 is a partially sectioned side view

a tool for deburring bore edges and the like. According to a preferred Embodiment of the present invention, and

FIG. 2 shows a partially sectioned side view corresponding to FIG. 1, but in accordance with FIG another embodiment of the present invention.

The tool 11 and 11 'shown in FIGS. 1 and 2 Used for deburring the edges of holes and the like, for example in blind holes, on undercuts, on hole transitions etc. One and the same tool 11, 11 'can be used for different bore diameters and also with regard to on different and very large burrs on the edges of the hole in the same hole, as it is in a certain Diameter range can be readjusted during machining.

The deburring tool 11 according to FIG. 1 has a tool shank 12 with a rear clamping end 13 and a front region 14, which is of a plurality of ... of the Ends 17, 18 held bundled, metallic rods 16 is surrounded. The metallic rods 16 have the illustrated Embodiment a square cross section; but they can also be round, oval, triangular or the like. Cross-section. The ends 17 of the metallic rods 16 facing the clamping end 13 are through a Bundled ring element 21, which is held stationary on the tool shank 12 by a transverse pin 2 2 and which the Rod ends 17 in an annular groove 2 3 receives. The others

i.e. the ends 18 of the metallic rods 16 facing away from the clamping end 13 are bundled in an adjustable ring element 26 which also has an annular groove 28, in which the rod ends 18 are added. The ring element 2 6 is on an external thread 2 9 of that end 31 of the tool shank 12, which faces away from the clamping end 13, according to the double arrow A in the axial direction and led walking. For axial guidance and to prevent rotation of the ring element 26, the end 31 provided with the external thread 29 has an axial groove 32 in which can slide a protrusion or slot nut 33 protruding inward from the ring element 26 in the radial direction. on the external thread 29 of the tool shank end 31 is an adjusting element 34 with internal thread 27 in the form of a nut screwed on, which is countered by a lock nut 36 can be.

The metallic rods 16, the surface of which is completely or partially covered with diamond particles, run between the two ring elements 21 and 26, in which their ends 17, 18 are held, seen in the radial direction bulbous and slightly twisted seen in the axial direction. The metallic rods 16 are pre-bent radially on the one hand and on the other hand biased so that they are somewhat resiliently resilient in the radial direction. By the chosen The movable ring element 26 is always preloaded against the nut 3 4. By turning the nut

34 in one direction or the other so the rod i

end 17, 18 closer together or apart, which |

means that the maximum diameter of the bulbous f

biased bent rods 16 changes approximately in the middle, ξ

i.e. becomes smaller or larger. In this way a j-

stepless, very fine adjustment of this diameter forward |

be taken. If the diameter becomes smaller, I will decrease

the prestressing of the metallic rods 16, which means J

ν · · ■

• '<1

that their resilience is increased, while in the opposite case, i.e. when the diameter is increased, the preload is increased and thereby the flexibility is reduced. The adjustment of the maximum diameter of the metallic rods 16 with the aid of the nut 34 and the fixing of this position with the help of the lock nut 35 takes place in this embodiment before machining, i.e. before deburring a hole or between two machining steps.

^{The tool II 1} shown in FIG. 2 corresponds to the tool 11 except for the type of diameter adjustment. In this exemplary embodiment, the ring element 26 'facing away from the clamping end 13' is stationary with the aid of a transverse pin 22 '. In contrast, the ring element 21 'facing the tool shank clamping end 13' can be moved back and forth according to the double arrow A '. Here too, the ring element 21 is axially displaced and secured against rotation by an axial groove 3 2 in the area of the external thread 29 'of the clamping end 13' and by a radially inwardly directed projection 33 'on the ring element 21'. The adjustment element 34 'with its internal thread 27' is in the form of an internally threaded sleeve which covers a substantial area of the clamping end 13 'and which is provided, for example, with a screwdriver slot 37 or with an external hexagon (not shown) that is operated by an adjusting tool. '. can be seized, which can be provided on the machine 11' receiving the tool. With this tool part, the internally threaded sleeve 34 ′ can be adjusted relative to the tool shank 12 even during the machining of a bore, which leads to a diameter reduction or expansion of the metallic rods 16. The above-mentioned adjusting tool holds the adjusting element 34 'in place, so that no lock nut or the like is necessary.

In addition, the tool II ^{1 is combined} with a brush tool part m, the shaft 42 of which is screwed into an internally threaded bore 43 at the end 31 '. The bristles 44 of the brush 46 are held on the shaft 42, which consists of twisted rods. The tips 47 of the bristles 44 are each covered with diamond particles here as well. This combination of the tool ^{parts II 1} and 41 has the advantage that large burrs can be removed with the deburring tool 11 ', while at the same time a high surface quality can be achieved by the brush tool part 41.

- End of description -

Claims (8)

1. Tool for deburring the edges of holes and the like., With a tool shank and with a plurality of preferably diamond particle-coated, metallic rods which are curved outwardly bulging in the radial direction between their ends held together on the tool shank, characterized in that at least one of the ends (17, 18) of the metallic rods (16) is held on the tool shank (12) so as to be adjustable in the axial direction. ·. ' t that that 2. Tool according to claim 1, characterized in that the clamping end (13) of the tool shank (12) facing away from the front end (18) of the metallic rods (16) is adjustably held on the tool shank (12). - 2 - Dresdner Bank Stuttgart 1919Ö54 (BLZ 16ÖÖ BOT OQ): Postal check account Stuttgart 507 71 705 (BLZ 6O0100 701 Deutsche Bank Stuttgart 11/03 928 (BLZ 600 7OO 70). Postal check account Stuttgart 246 46 704 (BLZ 6O0100 70! 3. Tool according to claim 1, characterized in that the clamping end (13) of the tool shank (12) facing the rear end (17) of the metallic rods (16) is held adjustably on the tool shaft (12). i 4. Tool according to claim 2 or 3, characterized in that the ends (17, 18) of the metallic rods (16) ν retaining ring element (21, 26) on the tool shank (12) f; Slidably guided in the axial direction and under the K Effect of the metal- * ■: Lischen rods (16) on a thread adjustment element (34) .: that is applied to the relevant end of the tool shaft (12) is screwed on. 5. Tool according to claim 4, characterized in that the ring element (26, 21) is guided longitudinally by means of a radially inwardly directed projection (33) in an axial groove (32) of the tool shank (12). 6. Tool according to claim 4 or 5, characterized in that the thread adjusting element is a nut (34) which can be countered with a lock nut (36). 7. Tool according to claim 4 or 5, characterized in that the thread adjusting element is an in-line threaded sleeve (34 ') whose end (37) away from the ring element can be connected to an adjusting tool. 8. Tool according to one of the preceding claims, characterized in that the front end (31 ¹ ) of the tool shank (12) is connected to a brush tool part (41) whose bristle tips (47) are preferably coated with diamond particles. - End of claims -