Method of grinding gears

Patent metadata

Field	Value
Publication number	US-10092995-B2
Application number	US-201515308102-A
Country	US
Kind code	B2
Filing date	Jun 9, 2015
Priority date	Jun 12, 2014
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

A method of grinding the tooth slots of a workpiece with a freshly dressed grinding wheel wherein dual-machining of tooth slots is eliminated. The method comprises grinding the first few slots of a gear at a corrected depth amount which accounts for the rapid wear and other conditions of the freshly dressed grinding wheel wherein for a first number of tooth slots (e.g. 1, 2, 3 or more), the grinding wheel is fed-in relative to the workpiece by the corrected depth amount.

First claim

What is claimed is:

1. A method of grinding a gear with a freshly-dressed grinding wheel, said gear having a plurality of tooth slots, said method comprising:
grinding each of said plurality of tooth slots,
wherein for an initial number of said plurality of tooth slots ground, inclusive of a first slot ground, the grinding wheel is fed into each of said tooth slots of said initial number by a respective correction amount so as to compensate for material removal effects of said grinding wheel due to said grinding wheel being freshly-dressed,
wherein none of said plurality of tooth slots are reground.

2. The method of claim 1 wherein a tooth slot immediately subsequent to said initial number is ground with no correction amount.

3. The method of claim 2 further comprising grinding the remainder of said plurality of tooth slots wherein the grinding of each remaining tooth slot includes a compensation amount for each respective remaining tooth slots based upon normal continual wear of the grinding wheel.

4. The method of claim 1 wherein said initial number is 1, 2 or 3.

5. The method of claim 1 wherein said grinding wheel is a cup-shaped grinding wheel.

6. The method of claim 1 wherein said grinding wheel is a disc-shaped grinding wheel.

7. The method of claim 1 wherein said gear is a bevel gear.

8. The method of claim 1 wherein said gear is a cylindrical gear.

9. The method of claim 1 wherein said respective correction amount for each of said tooth slots of said initial number is determined from a master ground workpiece.

10. The method of claim 1 wherein said respective correction amount for each of said tooth slots of said initial number is determined mathematically based on characteristics of grinding wheel material and gear geometry and material.

Assignees

• The Gleason Works

Inventors

• Gaiser Uwe
• Mundt Eric G

Classifications

• B23F5/02

  by grinding · CPC title

• B23F5/08

  the tool being a grinding disc having the same profile as the tooth or teeth of a rack · CPC title

• B23F9/025

  with a face-mill-type, i.e. cup-shaped, grinding wheel · CPC title

• B23F1/02

  by grinding · CPC title

• B24B51/00 Primary

  Arrangements for automatic control of a series of individual steps in grinding a workpiece (if applicable to other machine tools, G05B takes precedence) · CPC title