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Method for finishing a gear surface

A finishing and gear technology, applied in the direction of elements with teeth, belts/chains/gears, gear teeth, etc., can solve the problem of not knowing the information about the amount of blank removal, not allowing it, etc.

Inactive Publication Date: 2010-10-06
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, no information is known about stock removal at any other point on the gear flank
Additionally, existing measurements do not allow for verification that stock removal is shared between gear finishing machines and production facilities on the same part
Also, existing measurements do not allow for the verification that the hard flank finishing operation correctly implements the left-right flank stock division

Method used

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  • Method for finishing a gear surface
  • Method for finishing a gear surface
  • Method for finishing a gear surface

Examples

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Embodiment Construction

[0076] The following description is merely exemplary in nature and is not intended to limit the invention, its application or uses.

[0077] refer to figure 1 , an exemplary workpiece for use with the present invention is indicated by reference numeral 10 . In the example provided, while workpiece 10 is a spur gear, workpiece 10 may be other types of gears without departing from the scope of the present invention. The workpiece 10 includes a first side 12 disposed opposite a second side 14 . The workpiece 10 also includes an inner surface 16 and an outer surface 18 . A plurality of gear teeth 20 are disposed on the outer surface 18 . Each tooth 20 extends from the first side 12 to the second side 14 . In the example provided, the teeth 20 are disposed at an angle relative to the first side 12 and the second side 14 (ie, the teeth 20 are helical teeth). However, it should be understood that the gear teeth 20 may be arranged in other configurations and angles on the outer s...

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Abstract

A method for manufacturing a gear having a plurality of gear teeth includes the steps of: determining a desired finished gear characteristic, determining a reference feature on the gear to establish an origin on the gear, determining an unfinished dimension of a surface of at least one of the plurality of gear teeth relative to the origin, estimating a desired stock removal that will achieve the desired finished gear characteristic, finishing the gear using a finishing tool, determining a finished dimension of the surface of the at least one of the plurality of gear teeth relative to the origin, determining actual stock removal by comparing the unfinished dimension with the finished dimension, and comparing the actual stock removal with the desired stock removal.

Description

technical field [0001] The present invention relates to a method for finishing a gear surface, and more particularly, to a method for finishing a gear surface by determining actual stock removal and actual stock divide. Background technique [0002] This section only provides background information related to the present disclosure and may or may not constitute prior art. [0003] In many applications, including automotive transmission gear sets, individual gears must have teeth that are precisely machined. Typically, stock removal for a given gear is estimated prior to finishing the tooth surfaces of the given gear. There is currently no direct method to verify that the assumptions and calculations for stock removal and stock division on hard gear finishing sections are correct. Stock division is inferred by undercut size, while stock removal is inferred by calculations based on over balls measurements taken at a single location at mid-tooth height. The measurement acros...

Claims

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Application Information

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IPC IPC(8): B23F19/00B23F19/05B23F19/06
CPCB23F19/002B23F19/05B23F19/06Y10T29/49462Y10T29/49467
Inventor T·M·汤普森J·R·李S·D·杜布勒R·弗里森
Owner GM GLOBAL TECH OPERATIONS LLC
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