GB829130A - Method of making a gear finishing tool - Google Patents
Method of making a gear finishing toolInfo
- Publication number
- GB829130A GB829130A GB7417/57A GB741757A GB829130A GB 829130 A GB829130 A GB 829130A GB 7417/57 A GB7417/57 A GB 7417/57A GB 741757 A GB741757 A GB 741757A GB 829130 A GB829130 A GB 829130A
- Authority
- GB
- United Kingdom
- Prior art keywords
- teeth
- plastic
- gear
- tool
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D15/00—Producing gear wheels or similar articles with grooves or projections, e.g. control knobs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F21/00—Tools specially adapted for use in machines for manufacturing gear teeth
- B23F21/03—Honing tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
- B29C33/3857—Manufacturing moulds, e.g. shaping the mould surface by machining by making impressions of one or more parts of models, e.g. shaped articles and including possible subsequent assembly of the parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
Abstract
A gear finishing tool is made by forming a mould from a representation of a master gear, and moulding the tool in the mould thus formed. A plastic model of a gear is formed, together with a model of a conjugate gear of a hard resilient plastic with abrasive particles embedded in the teeth, the models rolled in mesh to remove material from the plastic model as a result of the action of the abrasive particles, and a mould formed from the plastic model, in which is moulded a tool having teeth at least the surface portions of which are hard resilient plastic material in which abrasive particles are embedded. The models are rolled in mesh preferably by driving one of them first in one direction and then in the other and opposing rotation of the driven member, e.g. by brake action. The invention is particularly useful in the finishing of bevel, spiral bevel, or hypoid gears having crowned teeth. In such a case initial contact between the teeth of the plastic gear and the plastic abrasive tool is limited to a zone central of the teeth but as the two are rotated in mesh the teeth of the plastic gear become longitudinally concave and capable of contacting the teeth of the abrasive tool from end to end. The final gear finishing tool is a counterpart of this modified plastic model gear and accordingly its teeth are longitudinally concave by an amount sufficient to cause them to engage substantially uniformly from end to end with the crowned teeth of a metal pinion and to finish the teeth of this pinion from end to end. The tool may be formed in its entirety of the hard resilient plastic material or may have a disc-shaped metal core and plastic teeth. The metal disc may have short teeth which extend partly into the plastic teeth. Suitable plastic materials are epoxy casting resins in which 60 grit abrasive such as silicon carbide is incorporated. The moulds may also be made of epoxy resins but it is preferable to use a material of higher heat resistance, e.g. phenolic resins such as phenol formaldehyde and phenol-furfural compounds or polychlorotrifluoroethylene, so that the epoxy resin may be heated during moulding. Specification 800,680 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US829130XA | 1956-04-30 | 1956-04-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB829130A true GB829130A (en) | 1960-02-24 |
Family
ID=22174259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7417/57A Expired GB829130A (en) | 1956-04-30 | 1957-03-06 | Method of making a gear finishing tool |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB829130A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2784045A1 (en) * | 1998-10-01 | 2000-04-07 | Monti Werkzeuge Gmbh | ROTARY TOOL FOR MACHINING SURFACES |
CN112045258A (en) * | 2019-06-06 | 2020-12-08 | 卡帕耐尔斯有限两合公司 | Method for producing a workpiece having a tooth profile or a contour |
-
1957
- 1957-03-06 GB GB7417/57A patent/GB829130A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2784045A1 (en) * | 1998-10-01 | 2000-04-07 | Monti Werkzeuge Gmbh | ROTARY TOOL FOR MACHINING SURFACES |
CN112045258A (en) * | 2019-06-06 | 2020-12-08 | 卡帕耐尔斯有限两合公司 | Method for producing a workpiece having a tooth profile or a contour |
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