Grinding tool

• US 5,853,319 A
• Filed: 09/12/1996
• Issued: 12/29/1998
• Est. Priority Date: 09/13/1995
• Status: Expired due to Term

• Current Assignee: Ernst Winter & Sohn Diamantwerkzeuge GmbH & Co.
• Original Assignee: Ernst Winter & Sohn Diamantwerkzeuge GmbH & Co.
• Inventors: Meyer, Hans-Robert
• Primary Examiner(s): Rose, Robert A.
• Assistant Examiner(s): NGUYEN, GEORGE BINH MINH
• Application Number:
  US08/713,020
• Time in Patent Office: 838 Days
• Field of Search: 451/542, 451/544, 451/554, 51/297, 125/15
• US Class Current: 451/548
• CPC Class Codes: B24D 5/14 Zonally-graded wheels; Composite wheels comprising different abrasives

Abstract

Grinding tool including a basic body symmetric with respect to rotation and a grinding layer deposited on the periphery of said grinding tool. The grinding layer being composed of the grinding grains, bonding agent and occasionally filler and/or wear-changing additives. The outer radius of the annular grinding layer or the extension in feeding direction perpendicular to the axis of the basic body is different, with the physical properties and/or the volume contents of the components of the layer are different in axial direction such that an adaptation to the different grinding load continuously in axial direction is achieved.

Claims

1. A grinding tool for the grinding of profiles on workpieces comprising a basic body symmetrical with respect to an axis of rotation of the grinding tool, the basic body having a circular periphery, and an annular grinding layer deposited on the periphery of the basic body, the grinding layer being composed of a mixture of components comprising grinding grains and bonding agent, the components of the grinding layer being present in variable volume percent concentrations within axial layers, the axial layers having different radial dimensions, wherein the concentrations of components within the axial layers are effective to equalize wear rates among the axial layers when the grinding layer is subjected to variable axial grinding loads during profile grinding.

2. The grinding tool of claim 1, wherein the concentration of the grinding grains in axial direction is different.

3. The grinding tool of claim 1 wherein the grain size of the grinding grains in axial direction is different.

4. The grinding tool according to claim 1, wherein the composition of the components of the bonding agent is different in axial direction.

5. The grinding tool of claim 1, wherein the concentration of the filler materials having a lubricating effect is different in axial direction.

6. The grinding tool of claim 1, wherein the concentration of additives influencing the wear is different in axial direction.

7. The grinding tool of claim 1, wherein the radial dimensions of the axial layers include a maximum radial dimension and a minimum radial dimension, and the volume percent concentration of grinding grains in the grinding layer is at a maximum in the axial layer having the maximum radial dimension and at a minimum in the axial layer having the minimum radial dimension.

8. The grinding tool of claim 1, wherein the volume percent concentrations of the components within the axial layers of the grinding layer changes by step.

9. The grinding tool of claim 1, wherein the volume percent concentrations of the grinding grains within the axial layers changes continuously in axial direction.

10. The grinding tool of claim 1, wherein the grain size within an axial layer is directly proportional to the radial dimension of the axial layer.

11. The grinding tool of claim 1, wherein the mixture of components further comprises at least one component selected from the group consisting of grinding grains having variable grain sizes, lubricating fillers and wear-reducing additives, and combinations thereof.