METHOD FOR REUSING AN ABRASIVE TOOL

Abstract

A method of recoating an abrasive tool, wherein the abrasive tool includes a main tool body, which has at least one accommodating surface for accommodating abrasive bodies, wherein the abrasive bodies are adhesively bonded to the accommodating surface by an adhesive. The method includes at least the following steps: degenerating the adhesive, detaching the worn-out abrasive bodies from the main tool body, detaching the degenerated adhesive from the main tool body, reapplying the adhesive; and recoating the main tool body with new abrasive bodies.

Claims

1.-11. (canceled)

12. A method for recoating an abrasive tool, wherein the abrasive tool comprises a main tool body, which comprises at least one accommodating surface for accommodating abrasive bodies, wherein the abrasive bodies are adhesively bonded to the accommodating surface by means of an adhesive, wherein the method comprises: degenerating the adhesive, detaching, from the main tool body, the worn-out abrasive bodies, detaching, from the main tool body, the degenerated adhesive, reapplying the adhesive, and recoating the main tool body with new abrasive bodies.

13. The method of claim 12, including introducing heat into the adhesive to degenerate the adhesive.

14. The method of claim 12, including bringing an organic acid into contact with the adhesive to degenerate the adhesive.

15. The method of claim 14, wherein the organic acid is acetic acid.

16. The method of claim 12, wherein the adhesive is a 2-component epoxy-adhesive system.

17. The method of claim 16, wherein the 2-component epoxy-adhesive system used is an amine-cured adhesive system.

18. The method of claim 12, wherein the main tool body provided is a CFRP main body.

19. A recoatable abrasive tool which is recoated according to the method of claim 12.

20. The recoatable abrasive tool of claim 19, wherein the abrasive bodies are adhesively bonded to the main tool body by an adhesive which can be degenerated at least by means of heat or by means of an organic acid.

21. The recoatable abrasive tool of claim 19, wherein the adhesive comprises at least one 2-component epoxy-adhesive system, or the main tool body comprises a CFRP material.

22. The recoatable abrasive tool of claim 19, wherein the adhesive is capable of being degenerated by means of an acetic acid.

Description

EXEMPLARY EMBODIMENT OF THE INVENTION

[0014] Further measures which improve the invention will be presented in more detail hereinbelow, together with the description of an exemplary embodiment of the invention, with reference to the figures, in which:

[0015] FIG. 1 shows the abrasive tool illustrated in the form of a half cross section and of a partial front view, wherein worn-out abrasive bodies are present on an accommodating surface of the abrasive tool,

[0016] FIG. 2 shows the abrasive tool according to FIG. 1, wherein the abrasive bodies have been removed and wherein the adhesive is being degenerated,

[0017] FIG. 3 shows the abrasive tool according to FIG. 2, wherein the adhesive is being removed mechanically from the accommodating surface,

[0018] FIG. 4 shows the abrasive tool with a new adhesive being applied to the accommodating surface,

[0019] FIG. 5 shows the abrasive tool with a newly applied adhesive on the accommodating surface, and

[0020] FIG. 6 shows the abrasive tool onto which new abrasive bodies is being applied onto the accommodating surface wetted with adhesive.

[0021] FIGS. 1 to 6 each show an abrasive tool 1 in the form of a half cross section taken along a center axis 14 of a main tool body 10 and in the form of a left-hand front view, in which part of the circumference of the abrasive tool 1 is shown from the direction of the center axis 14. The main tool body 10 comprises an essentially cylindrical accommodating surface 11, to which a plurality of abrasive bodies 12 have been applied. The abrasive bodies 12 are secured by an adhesive 13, which is located in the adhesive joint between the accommodating surface 11 of the main tool body 10 and the used-up abrasive bodies 12.

[0022] FIG. 1 shows an abrasive tool 1 with worn-out abrasive bodies 12, which, in order for the abrasive tool 1 to be recoated, have to be removed from the main tool body 10. In order for the adhesive 13 to be degenerated, it is possible, so that the adhesive 13 can be more easily reached, for the worn-out abrasive bodies 12 to be removed first of all from the accommodating surface 11.

[0023] FIG. 2 shows the method according to the invention for degenerating the adhesive 13, the invention using, for this purpose, for example an acid which is applied by means of a spray source 15. Also shown is a heat source 16, by means of which heatshown by an arrowis introduced into the layer of adhesive 13 in order to degenerate the same. It is advantageous here if the degeneration of the adhesive 13 is preceded by the worn-out abrasive bodies 12 being separated off mechanically, for example by being machined using turning or grinding.

[0024] FIG. 3 shows the abrasive tool 1 with the main tool body 10 and a detaching tool 17, by means of which the degenerated adhesive 13 is removed mechanically from the accommodating surface 11, for example by being scraped off, in which case both the abrasive bodies 12 and the adhesive 13 have been removed from the accommodating surface 11.

[0025] FIG. 4 shows the step of a new adhesive 13 being applied to the accommodating surface 11 by means of an adhesive source 18. The adhesive 13 used is, for example, a two-component epoxy-adhesive system, and this therefore comprises particularly advantageous properties for repeated degeneration.

[0026] FIG. 5 shows the abrasive tool 1, the new adhesive 13 finally having been applied in full to the accommodating surface 11 of the main tool body 10.

[0027] FIG. 6 shows the method step in which new, intact abrasive bodies 12 are being adhesively bonded, the adhesive 13 serving for adhesive-bonding purposes.

[0028] The method for recoating the abrasive tool 1 can be repeated on a very frequent basis, since the degeneration of the adhesive 13 involves just a purely chemical process, without the main tool body 10 having to be subjected to any mechanical action. Even when the abrasive bodies 12 are being separated off in order to expose the adhesive 13, the main tool body 10 is not subjected to any mechanical loading.

[0029] The invention is not restricted to the preferred exemplary embodiment specified above. Rather, a number of variants which make use of the solution presented, even in respect of embodiments of fundamentally different kinds, are conceivable. All of the features and/or advantages which can be gathered from the claims, the description or the drawings, including design-related details or three-dimensional arrangements, may be essential to the invention both in their own right out also in a wide variety of combinations.

LIST OF REFERENCE SIGNS

[0030] 1 Abrasive tool

[0031] 10 Main tool body

[0032] 11 Accommodating surface

[0033] 12 Abrasive body

[0034] 12 Worn-out abrasive body

[0035] 13 Adhesive

[0036] 13 Degenerated adhesive

[0037] 14 Center axis

[0038] 15 Spray source

[0039] 16 Heat source

[0040] 17 Detaching tool

[0041] 18 Adhesive source