Est Tools Co., Ltd.

China

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IPC Class
B23F 1/08 - Making gear teeth by tools of which the profile matches the profile of the required surface by broachingMaking gear teeth by tools of which the profile matches the profile of the required surface by broach-milling 1
B23P 6/00 - Restoring or reconditioning objects 1
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1.

Pot broaching tools and methods for remanufacture-forming pot broaching tools

      
Application Number 16848075
Grant Number 10875113
Status In Force
Filing Date 2020-04-14
First Publication Date 2020-07-30
Grant Date 2020-12-29
Owner EST Tools Co., Ltd. (China)
Inventor
  • Chen, Errong
  • Chen, Ziyan
  • Pan, Mingfeng

Abstract

A method for remanufacturing a pot broaching tool includes re-grinding cutting teeth on a cutting side of a used pot broaching tool, cool laser welding a rough milled shim to a bottom side of the used pot broaching tool, and grinding the cool laser welded rough milled shim such that an outer surface of the cool laser welded milled shim has a high polished surface. An inner surface of the rough milled shim has an Ra surface finish between 250 and 30 microinches and the ground outer surface of the rough milled shim has a flatness tolerance within +0/−0.0002 inches. Also, the method can include installing the remanufactured pot broaching tool in a pot without the use of a thin shim between the outer surface of the cool laser welded milled shim and an inner surface of the pot.

IPC Classes  ?

  • B23P 6/00 - Restoring or reconditioning objects
  • B23F 1/08 - Making gear teeth by tools of which the profile matches the profile of the required surface by broachingMaking gear teeth by tools of which the profile matches the profile of the required surface by broach-milling