The Undercut Criterion of Pinion Shaper Cutters: And an Improvement by Modifying the Basic Rack Profile
(2016) In Journal of Manufacturing Science and Engineering 138(1). p.7-011011- Abstract
- The fillet of the gear tooth is highly stressed in operation; so for heavily loaded gears, the fillet geometry must be controlled. The manufacturer's task is to, within acceptable tolerances, produce the gear to the designer's specifications regardless of the manufacturing method. Most often gear cutting tools are used that work under generating conditions. The tool will form the gear tooth; so to produce the specified gear geometry and, especially, the fillet geometry, this tool must be conjugated to the same basic rack as the gear to cut. However, this gives a risk that the tooth tip of the tool will be undercut, and if this occurs the tool will not cut the intended gear fillet. In this report, novel analytical equations are derived,... (More)
- The fillet of the gear tooth is highly stressed in operation; so for heavily loaded gears, the fillet geometry must be controlled. The manufacturer's task is to, within acceptable tolerances, produce the gear to the designer's specifications regardless of the manufacturing method. Most often gear cutting tools are used that work under generating conditions. The tool will form the gear tooth; so to produce the specified gear geometry and, especially, the fillet geometry, this tool must be conjugated to the same basic rack as the gear to cut. However, this gives a risk that the tooth tip of the tool will be undercut, and if this occurs the tool will not cut the intended gear fillet. In this report, novel analytical equations are derived, which predict the limit when the tool tip will be undercut. It is shown that if the gear tooth should be conjugated to the standard basic rack with a circular fillet, which is the normal case, very large tool-tooth numbers are needed for pinion shaper cutters and gear skiving cutters to avoid this type of undercut. However, the minimum tooth number to achieve a smooth continuous tool-tooth profile is reduced by modifications to the fillet of the basic rack profile. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/7863501
- author
- Svahn, Mattias LU
- organization
- publishing date
- 2016
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- pinion shaper cutter, gear skiving cutter, hob, undercut, fillet geometry, basic rack design, tool design
- in
- Journal of Manufacturing Science and Engineering
- volume
- 138
- issue
- 1
- pages
- 7 - 011011
- publisher
- American Society Of Mechanical Engineers (ASME)
- external identifiers
-
- wos:000367715900011
- scopus:84941247904
- ISSN
- 1528-8935
- DOI
- 10.1115/1.4030375
- language
- English
- LU publication?
- yes
- id
- 926bfb8a-6244-45f7-af28-8085d6016266 (old id 7863501)
- date added to LUP
- 2016-04-01 13:27:21
- date last changed
- 2022-01-27 19:19:40
@article{926bfb8a-6244-45f7-af28-8085d6016266,
abstract = {{The fillet of the gear tooth is highly stressed in operation; so for heavily loaded gears, the fillet geometry must be controlled. The manufacturer's task is to, within acceptable tolerances, produce the gear to the designer's specifications regardless of the manufacturing method. Most often gear cutting tools are used that work under generating conditions. The tool will form the gear tooth; so to produce the specified gear geometry and, especially, the fillet geometry, this tool must be conjugated to the same basic rack as the gear to cut. However, this gives a risk that the tooth tip of the tool will be undercut, and if this occurs the tool will not cut the intended gear fillet. In this report, novel analytical equations are derived, which predict the limit when the tool tip will be undercut. It is shown that if the gear tooth should be conjugated to the standard basic rack with a circular fillet, which is the normal case, very large tool-tooth numbers are needed for pinion shaper cutters and gear skiving cutters to avoid this type of undercut. However, the minimum tooth number to achieve a smooth continuous tool-tooth profile is reduced by modifications to the fillet of the basic rack profile.}},
author = {{Svahn, Mattias}},
issn = {{1528-8935}},
keywords = {{pinion shaper cutter; gear skiving cutter; hob; undercut; fillet geometry; basic rack design; tool design}},
language = {{eng}},
number = {{1}},
pages = {{7--011011}},
publisher = {{American Society Of Mechanical Engineers (ASME)}},
series = {{Journal of Manufacturing Science and Engineering}},
title = {{The Undercut Criterion of Pinion Shaper Cutters: And an Improvement by Modifying the Basic Rack Profile}},
url = {{http://dx.doi.org/10.1115/1.4030375}},
doi = {{10.1115/1.4030375}},
volume = {{138}},
year = {{2016}},
}