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US3955327A
Expired / Lapsed
US
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Gear polishing
Assignee: Nachi Machining Technology Co
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Filing: 1972-12-21
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Granted: 1976-05-11
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Expires: 1992-12-21
Abstract
Abstract A gear shaped tool formed of a relatively soft elastically deformable material provided with a multiplicity of pores provided in the sides of its teeth by elimination of solid particles exposed at the surface thereof is rotated in mesh under light pressure contact with a work gear, while a very fine abrasive fluid polishing compound is provided. The operation improves the surface finish of the teeth of the work pieces without appreciably affecting the tooth form. The operation may be carried out with the axes of the gear and polishing tool parallel or crossed at a small angle and a relative traverse may be provided between the gear and tool in a direction which occupies a plane parallel to the axes of both the gear and tool, such direction preferably being parallel to the axis of the gear.
Inventors
- 👤 Melvin A. Franco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:27
CPC Classifications
B; B23; B23F; B23F21/00; B23F21/03
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
187 words
A polishing tool for use with a polishing compound having polishing particles therein the majority of which are substantially smaller than 50 mesh, said tool comprising a body having at least a portion thereof having a polishing surface, said body portion being formed essentially of a relatively soft or yieldable highly resilient solid material characterized by the fact that the material is in the form of a solid continuum having a multiplicity of discrete solid particles of at least 50 mesh particle size uniformly distributed therein and the complete absence of voids therein and being devoid of abrasive grit bonded to the surface thereof, said material having a hardness of between 75 Durometer A and 55 Durometer D, the polishing surface of said body having a multiplicity of pores or recesses opening into said polishing surface and extending into the material of said body portion, said pores resulting from the elimination of the discrete solid particles from the surface, the majority of said pores or recesses conforming in size to particles of 50 mesh or larger to provide for physical reception therein of particles of polishing compound.
Claim 2
Dependent Claim
187 words
A polishing tool for use with a polishing compound having polishing particles therein the majority of which are substantially smaller than 50 mesh, said tool comprising a body having at least a portion thereof having a polishing surface, said body portion being formed essentially of a relatively soft or yieldable highly resilient solid material characterized by the fact that the material is in the form of a solid continuum having a multiplicity of discrete solid particles of at least 50 mesh particle size uniformly distributed therein and the complete absence of voids therein and being devoid of abrasive grit bonded to the surface thereof, said material having a hardness of between 75 Durometer A and 55 Durometer D, the polishing surface of said body having a multiplicity of pores or recesses opening into said polishing surface and extending into the material of said body portion, said pores resulting from the elimination of the discrete solid particles from the surface, the majority of said pores or recesses conforming in size to particles of 50 mesh or larger to provide for physical reception therein of particles of polishing compound.
Claim 3
Dependent Claim
19 words
A tool as defined in claim 1 in which said material has a hardness of about 95 Durometer A.
Claim 4
Dependent Claim
14 words
A tool as defined in claim 1 in which said elastomeric material is polyurethane.
Claim 5
Dependent Claim
13 words
A tool as defined in claim 2 in which said material is polyurethane.
Claim 6
Dependent Claim
34 words
A polishing tool as defined in claim 1 in which said body is in the form of a gear, and the polishing surface thereof is composed of the side surfaces of the gear teeth.
Claim 7
Dependent Claim
19 words
A tool as defined in claim 5 in which said material has a hardness of about 95 Durometer A.
Claim 8
Dependent Claim
13 words
A tool as defined in claim 5 in which said material is polyurethane.
Claim 9
Dependent Claim
13 words
A tool as defined in claim 6 in which said material is polyurethane.
Claim 10
Dependent Claim
168 words
A polishing tool for use with a polishing compound having polishing particles therein most of which are substantially smaller than 50 mesh, said tool comprising a body having at least a portion thereof having polishing surface portions, said body portion being formed of a relatively soft or yieldable highly resilient material having a hardness of between 75 Durometer A and 55 Durometer D, said material having a multiplicity of discrete solid particles of at least 50 mesh particle size uniformly distributed therein of which a multiplicity are located at said polishing surface portions, said resilient material and particles together forming a solid continuum characterized by the complete absence of voids therein, said particles being formed of a material such that when said polishing surface portions slide in pressure contact against a surface of a work piece the particles located at the polishing surface portions are eliminated and leave pores or recesses of corresponding size in open communication with said polishing surface portions and extending into said material therefrom.
Claim 11
Dependent Claim
168 words
A polishing tool for use with a polishing compound having polishing particles therein most of which are substantially smaller than 50 mesh, said tool comprising a body having at least a portion thereof having polishing surface portions, said body portion being formed of a relatively soft or yieldable highly resilient material having a hardness of between 75 Durometer A and 55 Durometer D, said material having a multiplicity of discrete solid particles of at least 50 mesh particle size uniformly distributed therein of which a multiplicity are located at said polishing surface portions, said resilient material and particles together forming a solid continuum characterized by the complete absence of voids therein, said particles being formed of a material such that when said polishing surface portions slide in pressure contact against a surface of a work piece the particles located at the polishing surface portions are eliminated and leave pores or recesses of corresponding size in open communication with said polishing surface portions and extending into said material therefrom.
Claim 12
Dependent Claim
15 words
A tool as defined in claim 9 in which said resilient material is polyurethane resin.
Claim 13
Dependent Claim
14 words
A tool as defined in claim 9 in which said particles are salt crystals.
Claim 14
Dependent Claim
14 words
A tool as defined in claim 10 in which said particles are salt crystals.
Claim 15
Dependent Claim
19 words
A tool as defined in claim 9 in which said material has a hardness of about 95 Durometer A.
Claim 16
Dependent Claim
19 words
A tool as defined in claim 10 in which said material has a hardness of about 95 Durometer A.
Claim 17
Dependent Claim
19 words
A tool is defined in claim 11 in which said material has a hardness of about 95 Durometer A.
Claim 18
Dependent Claim
19 words
A tool as defined in claim 12 in which said material has a hardness of about 95 Durometer A.
Claim 19
Dependent Claim
21 words
A tool as defined in claim 9 in which said particles constitute at least 10% by volume of said body portion.
Claim 20
Dependent Claim
32 words
A tool as defined in claim 9 in which said tool is in the form of a gear body and the portion thereof having polishing surface portions is the tooth portion thereof.
Claim 21
Dependent Claim
14 words
A tool as defined in claim 18 in which said resilient material is polyurethane.
Claim 22
Dependent Claim
12 words
A tool as defined in claim 18, said particles being salt crystals.
Claim 23
Dependent Claim
12 words
A tool as defined in claim 19, said particles being salt crystals.
Claim 24
Dependent Claim
20 words
A tool as defined in claim 18, in which the resilient material has a hardness of about 95 Durometer A.
Claim 25
Dependent Claim
20 words
A tool as defined in claim 19, in which the resilient material has a hardness of about 95 Durometer A.
Claim 26
Dependent Claim
20 words
A tool as defined in claim 20 in which the resilient material has a hardness of about 95 Durometer A.
Claim 27
Dependent Claim
20 words
A tool as defined in claim 21 in which the resilient material has a hardness of about 95 Durometer A.
Claim 28
Dependent Claim
20 words
A tool as defined in claim 22 in which the resilient material has a hardness of about 95 Durometer A.
Claim 29
Dependent Claim
21 words
A tool as defined in claim 18 in which said particles constitute at least 10% by volume of said body portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |