Tool for grinding toothed workpieces having collision contours

Abstract

A tool for generating tooth systems by grinding when the maximum tool diameter is limited by collision contours on the workpiece has a dressable grinding tool that is tightly connected to the tool holder. In one preferred arrangement, the dressable grinding tool is glued on the tool holder.

Claims

1. A tool for grinding tooth systems in which a maximum tool diameter is limited by collision contours on a workpiece, comprising: a tool mandrel having an outer surface defining an outer tool mandrel diameter and with a mounting surface at least at one end that is mountable in a machine head of a tooth grinding machine, and a grinding tool mounted on the outer surface defining said outer tool mandrel diameter, wherein the grinding tool is a dressable grinding tool including a plurality of individual segments that surround the outer surface circumferentially, that are adjacent to each other circumferentially, and that are tightly connected to the outer surface defining the outer tool mandrel diameter by gluing.

2. The tool according to claim 1, wherein the dressable grinding tool consists of at least two circular segments that are glued radially on the tool mandrel.

3. The tool according to claim 1, wherein the dressable grinding tool has regions with at least two different coating specifications, at least two different grains, at least two different binders, and/or at least two different physical or chemical binder characteristics, and that are designed with regard to use as roughing or finishing tools for at least one toothing.

4. The tool according to claim 3, wherein the regions have different screw geometries, and wherein the regions are configured to grind two or more different tooth systems.

5. The tool according to claim 1, wherein the tool mandrel has at least two regions, wherein at least one of said two regions is a region in which said dressable grinding tool can be glued, and wherein at least one other of the two regions is a region in which a dressable or non-dressable grinding tool can be clamped or fastened.

6. The tool according to claim 1, wherein the tool mandrel has at least two regions, and wherein said grinding tool is one of several grinding tools to be mounted on said regions.

7. The tool according to claim 1, wherein the grinding tool is for tooth grinding, and wherein said grinding tool is one of several grinding tools to machine non-toothed geometries, diameters, surfaces, grooves, or slots.

8. The tool arrangement according to claim 1, wherein the mounting surface is one of two mounting surfaces that are mountable in the machine head of the tooth grinding machine.

9. The tool according to claim 2, wherein the dressable grinding tool has regions with at least two different coating specifications, at least two different grains, at least two different binders, and/or at least two different physical or chemical binder characteristics, and that are designed with regard to use as roughing or finishing tools for at least one toothing.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a grinding tool according to the prior art.

(2) FIG. 2 shows a grinding tool engaged with a workpiece having a collision contour.

(3) FIGS. 3a-3e show embodiments of grinding tools according to the invention.

(4) FIG. 4 shows exemplary workpieces according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

(5) FIG. 1 shows a grinding tool according to the prior art. One or more grinding tools 10 are mounted on a tool mandrel 20 having an outer surface defining an outer tool mandrel diameter as well as double-sided mounting surfaces 21 for mounting the tool in the machine head of a tooth grinding machine (not depicted here), and each tool is fixed on the tool mandrel by fixing with a clamping cover or clamping unit 30.

(6) FIG. 2 shows a perspective view of a grinding tool 60 according to the invention. By means of the double toothing 50 depicted, the difficulty can also be seen which leads to a limit of the diameter of the grinding tool. Based on the helical gearing and the slanted position of the grinding tool necessitated thereby in the engaged position, the tool diameter may not exceed a certain diameter, since otherwise this would lead to a collision of the tool with the lower toothing.

(7) The design of the worm grinding wheel can likewise be seen, which design consists of a plurality of individual segments 65 that surround the outer surface circumferentially, that are adjacent to each other circumferentially, and that are glued radially to the outer circumference of the tool mandrel.

(8) FIGS. 3a to 3e show by way of example different embodiments of the tool arrangement with one or more grinding tools which are engaged with a workpiece having a collision contour, in the example of the double toothing 50 from FIG. 2. The view is depicted from the direction of a machine head in the direction toward the workpiece to be machined.

(9) FIG. 3a shows a dressable worm grinding wheel 60 which consists of circular segments 65 glued radially to the outer diameter on the tool mandrel 40. The slanted position of the tool is determined, among other reasons, by the helix angle and the tool design.

(10) A dressable worm grinding wheel is likewise shown in FIG. 3b, which worm grinding wheel in this case is constructed of a plurality of ring sections 66 which again are glued to the tool mandrel 40.

(11) The combination tool shown in FIG. 3c consists of a dressable worm grinding wheel 62 composed of individual segments glued to a tool mandrel 41, and a mounted grinding wheel 63 which can be implemented as dressable or non-dressable.

(12) The tool arrangement with two worm grinding wheels, as is shown in FIG. 3d, consists likewise of a glued on worm grinding wheel 61 and a mounted worm grinding wheel 64 that is implemented as dressable or non-dressable, and which is fixed to a tool mandrel 42 in this case by a clamping cover 44.

(13) FIG. 3e shows a tool arrangement with a single-sided mounting cone for the tool in the tool holder.

(14) Exemplary workpieces, as they can be machined according to the invention using a grinding tool, are depicted in FIG. 4.